© Semiconductor Components Industries, LLC, 2011
November, 2011 − Rev. 17
1Publication Order Number:
MC7900/D
MC7900 Series
1.0 A Negative Voltage
Regulators
The MC7900 series of fixed output negative voltage regulators are
intended as complements to the popular MC7800 series devices.
These negative regulators are available in the same seven−voltage
options as the MC7800 devices. In addition, one extra voltage option
commonly employed in MECL systems is also available in the
negative MC7900 series.
Available in fixed output voltage options from −5.0 V to −24 V,
these regulators employ current limiting, thermal shutdown, and
safe−area compensation − making them remarkably rugged under
most operating conditions. With adequate heatsinking they can deliver
output currents in excess of 1.0 A.
•No External Components Required
•Internal Thermal Overload Protection
•Internal Short Circuit Current Limiting
•Output Transistor Safe−Area Compensation
•Available in 2% Voltage Tolerance (See Ordering Information)
•Pb−Free Package May be Available. The G−Suffix Denotes a
Pb−Free Lead Finish
Figure 1. Representative Schematic Diagram
Gnd
VO
VI
2.4 k
25
3.6 k
1.2 k
1.1 k
2.0 k
12 k
1.0 k
4.0 k
2.0 k
14.7 k
2.0 k 8.0 k
1.0 k
1.6 k
4.0 k
0.3
10 k
10 k
20 k 20 k
20 pF
10 pF
240
750
R1
R2
This device contains 26 active transistors.
http://onsemi.com
TO−220
T SUFFIX
CASE 221AB
Heatsink surface
connected to Pin 2.
Pin 1. Ground
2. Input
3. Output
D2PAK
D2T SUFFIX
CASE 936
Heatsink surface (shown as terminal 4 in
case outline drawing) is connected to Pin 2.
1
2
3
12
3
STANDARD APPLICATION
A common ground is required between the input
and the output voltages. The input voltage must
remain typically 2.0 V above more negative even
during the high point of the input ripple voltage.
These two digits of the type number
indicate nominal voltage.
Cin is required if regulator is located an
appreciable distance from power supply filter.
CO improve stability and transient response.
MC79XX
Input
Cin*
0.33 mFCO**
1.0 mF
Output
XX,
**
**
See detailed ordering and shipping information in the package
dimensions section on page 11 of this data sheet.
ORDERING INFORMATION
See general marking information in the device marking
section on page 14 of this data sheet.
DEVICE MARKING INFORMATION
MC7900 Series
http://onsemi.com
2
MAXIMUM RATINGS (TA = +25°C, unless otherwise noted.)
Rating Symbol Value Unit
Input Voltage (−5.0 V ≥ VO ≥ −18 V)
Input Voltage (24 V)
VI−35
−40
Vdc
Power Dissipation
Case 221A
TA = +25°C PDInternally Limited W
Thermal Resistance, Junction−to−Ambient qJA 65 °C/W
Thermal Resistance, Junction−to−Case qJC 5.0 °C/W
Case 936 (D2PAK)
TA = +25°C PDInternally Limited W
Thermal Resistance, Junction−to−Ambient qJA 70 °C/W
Thermal Resistance, Junction−to−Case qJC 5.0 °C/W
Storage Junction Temperature Range Tstg −65 to +150 °C
Junction Temperature TJ+150 °C
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
*This device series contains ESD protection and exceeds the following tests:
Human Body Model 2000 V per MIL_STD_883, Method 3015
Machine Model Method 200 V
MC7905B, MC7905C
ELECTRICAL CHARACTERISTICS (VI = −10 V, IO = 500 mA, Tlow* < TJ < +125°C, unless otherwise noted.)
Characteristics Symbol Min Typ Max Unit
Output Voltage (TJ = +25°C) VO−4.8 −5.0 −5.2 Vdc
Line Regulation (Note 1)
(TJ = +25°C, IO = 100 mA)
−7.0 Vdc ≥ VI ≥ −25 Vdc
−8.0 Vdc ≥ VI ≥ −12 Vdc
(TJ = +25°C, IO = 500 mA)
−7.0 Vdc ≥ VI ≥ −25 Vdc
−8.0 Vdc ≥ VI ≥ −12 Vdc
Regline
−
−
−
−
7.0
2.0
35
8.0
50
25
100
50
mV
Load Regulation, TJ = +25°C (Note 1)
5.0 mA ≤ IO ≤ 1.5 A
250 mA ≤ IO ≤ 750 mA
Regload
−
−
11
4.0
100
50
mV
Output Voltage
−7.0 Vdc ≥ VI ≥ −20 Vdc, 5.0 mA ≤ IO ≤ 1.0 A, P ≤ 15 W
VO
−4.75 − −5.25
Vdc
Input Bias Current (TJ = +25°C) IIB −4.3 8.0 mA
Input Bias Current Change
−7.0 Vdc ≥ VI ≥ −25 Vdc
5.0 mA ≤ IO ≤ 1.5 A
DIIB
−
−
−
−
1.3
0.5
mA
Output Noise Voltage (TA = +25°C, 10 Hz ≤ f ≤ 100 kHz) Vn−40 −mV
Ripple Rejection (IO = 20 mA, f = 120 Hz) RR −70 −dB
Dropout Voltage
IO = 1.0 A, TJ = +25°C
VI−VO
−1.3 −
Vdc
Average Temperature Coefficient of Output Voltage
IO = 5.0 mA, Tlow* ≤ TJ ≤ +125°C
DVO/DT
− −1.0 −
mV/°C
1. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account
separately. Pulse testing with low duty cycle is used.
*Tlow = −40°C for MC7905B and Tlow = 0°C for MC7905C.
MC7900 Series
http://onsemi.com
3
MC7905AC
ELECTRICAL CHARACTERISTICS (VI = −10 V, IO = 500 mA, 0°C < TJ < +125°C, unless otherwise noted.)
Characteristics Symbol Min Typ Max Unit
Output Voltage (TJ = +25°C) VO−4.9 −5.0 −5.1 Vdc
Line Regulation (Note 2)
−8.0 Vdc ≥ VI ≥ −12 Vdc; IO = 1.0 A, TJ = +25°C
−8.0 Vdc ≥ VI ≥ −12 Vdc; IO = 1.0 A
−7.5 Vdc ≥ VI ≥ −25 Vdc; IO = 500 mA
−7.0 Vdc ≥ VI ≥ −20 Vdc; IO = 1.0 A, TJ = +25°C
Regline
−
−
−
−
2.0
7.0
7.0
6.0
25
50
50
50
mV
Load Regulation (Note 2)
5.0 mA ≤ IO ≤ 1.5 A, TJ = +25°C
250 mA ≤ IO ≤ 750 mA
5.0 mA ≤ IO ≤ 1.0 A
Regload
−
−
−
11
4.0
9.0
100
50
100
mV
Output Voltage
−7.5 Vdc ≥ VI ≥ −20 Vdc, 5.0 mA ≤ IO ≤ 1.0 A, P ≤ 15 W
VO
−4.80 − −5.20
Vdc
Input Bias Current IIB −4.4 8.0 mA
Input Bias Current Change
−7.5 Vdc ≥ VI ≥ −25 Vdc
5.0 mA ≤ IO ≤ 1.0 A
5.0 mA ≤ IO ≤ 1.5 A, TJ = +25°C
DIIB
−
−
−
−
−
−
1.3
0.5
0.5
mA
Output Noise Voltage (TA = +25°C, 10 Hz ≤ f ≤ 100 kHz) Vn−40 −mV
Ripple Rejection (IO = mA, f = 120 Hz) RR −70 −dB
Dropout Voltage (IO = 1.0 A. TJ = +25°C) VI−VO−1.3 −Vdc
Average Temperature Coefficient of Output Voltage
IO = 5.0 A, 0°C ≤ TJ ≤ +125°C
DVO/DT
− −1.0 −
mV/°C
MC7905.2C
ELECTRICAL CHARACTERISTICS (VI = −10 V, IO = 500 mA, 0°C < TJ < +125°C, unless otherwise noted.)
Characteristics Symbol Min Typ Max Unit
Output Voltage (TJ = +25°C) VO−5.0 −5.2 −5.4 Vdc
Line Regulation (Note 2)
(TJ = +25°C, IO = 100 mA)
−7.2 Vdc ≥ VI ≥ −25 Vdc
−8.0 Vdc ≥ VI ≥ −12 Vdc
(TJ = +25°C, IO = 500 mA)
−7.2 Vdc ≥ VI ≥ −25 Vdc
−8.0 Vdc ≥ VI ≥ −12 Vdc
Regline
−
−
−
−
8.0
2.2
37
8.5
52
27
105
52
mV
Load Regulation, TJ = +25°C (Note 2)
5.0 mA ≤ IO ≤ 1.5 A
250 mA ≤ IO ≤ 750 mA
Regload
−
−
12
4.5
105
52
mV
Output Voltage
−7.2 Vdc ≥ VI ≥ −20 Vdc, 5.0 mA ≤ IO ≤ 1.0 A, P ≤ 15 W
VO
−4.95 − −5.45
Vdc
Input Bias Current (TJ = +25°C) IIB −4.3 8.0 mA
Input Bias Current Change
−7.2 Vdc ≥ VI ≥ −25 Vdc
5.0 mA ≤ IO ≤ 1.5 A
DIIB
−
−
−
−
1.3
0.5
mA
Output Noise Voltage (TA = +25°C, 10 Hz ≤ f ≤ 100 kHz) Vn−42 −mV
Ripple Rejection (IO = 20 mA, f = 120 Hz) RR −68 −dB
Dropout Voltage (IO = 1.0 A, TJ = +25°C) VI−VO−1.3 −Vdc
Average Temperature Coefficient of Output Voltage
IO = 5.0 mA, 0°C ≤ TJ ≤ +125°C
DVO/DT
− −1.0 −
mV/°C
2. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account
separately. Pulse testing with low duty cycle is used.
MC7900 Series
http://onsemi.com
4
MC7906C
ELECTRICAL CHARACTERISTICS (VI = −11 V, IO = 500 mA, 0°C < TJ < +125°C, unless otherwise noted.)
Characteristics Symbol Min Typ Max Unit
Output Voltage (TJ = +25°C) VO−5.75 −6.0 −6.25 Vdc
Line Regulation (Note 3)
(TJ = +25°C, IO = 100 mA)
−8.0 Vdc ≥ VI ≥ −25 Vdc
−9.0 Vdc ≥ VI ≥ −13 Vdc
(TJ = +25°C, IO = 500 mA)
−8.0 Vdc ≥ VI ≥ −25 Vdc
−9.0 Vdc ≥ VI ≥ −13 Vdc
Regline
−
−
−
−
9.0
3.0
43
10
60
30
120
60
mV
Load Regulation, TJ = +25°C (Note 3)
5.0 mA ≤ IO ≤ 1.5 A
250 mA ≤ IO ≤ 750 mA
Regload
−
−
13
5.0
120
60
mV
Output Voltage
−8.0 Vdc ≥ VI ≥ −21 Vdc, 5.0 mA ≤ IO ≤ 1.0 A, P ≤ 15 W
VO
−5.7 − −6.3
Vdc
Input Bias Current (TJ = +25°C) IIB −4.3 8.0 mA
Input Bias Current Change
−8.0 Vdc ≥ VI ≥ −25 Vdc
5.0 mA ≤ IO ≤ 1.5 A
DIIB
−
−
−
−
1.3
0.5
mA
Output Noise Voltage (TA = +25°C, 10 Hz ≤ f ≤ 100 kHz) Vn−45 −mV
Ripple Rejection (IO = 20 mA, f = 120 Hz) RR −65 −dB
Dropout Voltage (IO = 1.0 A, TJ = +25°C) VI−VO−1.3 −Vdc
Average Temperature Coefficient of Output Voltage
IO = 5.0 A, 0°C ≤ TJ ≤ +125°C
DVO/DT
− −1.0 −
mV/°C
MC7908C
ELECTRICAL CHARACTERISTICS (VI = −14 V, IO = 500 mA, 0°C < TJ < +125°C, unless otherwise noted.)
Characteristics Symbol Min Typ Max Unit
Output Voltage (TJ = +25°C) VO−7.7 −8.0 −8.3 Vdc
Line Regulation (Note 3)
(TJ = +25°C, IO = 100 mA)
−10.5 Vdc ≥ VI ≥ −25 Vdc
−11 Vdc ≥ VI ≥ −17 Vdc
(TJ = +25°C, IO = 500 mA)
−10.5 Vdc ≥ VI ≥ −25 Vdc
−11 Vdc ≥ VI ≥ −17 Vdc
Regline
−
−
−
−
12
5.0
50
22
80
40
160
80
mV
Load Regulation, TJ = +25°C (Note 3)
5.0 mA ≤ IO ≤ 1.5 A
250 mA ≤ IO ≤ 750 mA
Regload
−
−
26
9.0
160
80
mV
Output Voltage
−10.5 Vdc ≥ VI ≥ −23 Vdc, 5.0 mA ≤ IO ≤ 1.0 A, P ≤ 15 W
VO
−7.6 − −8.4
Vdc
Input Bias Current (TJ = +25°C) IIB −4.3 8.0 mA
Input Bias Current Change
−10.5 Vdc ≥ VI ≥ −25 Vdc
5.0 mA ≤ IO ≤ 1.5 A
DIIB
−
−
−
−
1.0
0.5
mA
Output Noise Voltage (TA = +25°C, 10 Hz ≤ f ≤ 100 kHz) Vn−52 −mV
Ripple Rejection (IO = 20 mA, f = 120 Hz) RR −62 −dB
Dropout Voltage (IO = 1.0 A, TJ = +25°C) VI−VO−1.3 −Vdc
Average Temperature Coefficient of Output Voltage
IO = 5.0 mA, 0°C ≤ TJ ≤ +125°C
DVO/DT
− −1.0 −
mV/°C
3. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account
separately. Pulse testing with low duty cycle is used.
MC7900 Series
http://onsemi.com
5
MC7912B, MC7912C
ELECTRICAL CHARACTERISTICS (VI = −19 V, IO = 500 mA, Tlow* < TJ < +125°C, unless otherwise noted.)
Characteristics Symbol Min Typ Max Unit
Output Voltage (TJ = +25°C) VO−11.5 −12 −12.5 Vdc
Line Regulation (Note 4)
(TJ = +25°C, IO = 100 mA)
−14.5 Vdc ≥ VI ≥ −30 Vdc
−16 Vdc ≥ VI ≥ −22 Vdc
(TJ = +25°C, IO = 500 mA)
−14.5 Vdc ≥ VI ≥ −30 Vdc
−16 Vdc ≥ VI ≥ −22 Vdc
Regline
−
−
−
−
13
6.0
55
24
120
60
240
120
mV
Load Regulation, TJ = +25°C (Note 4)
5.0 mA ≤ IO ≤ 1.5 A
250 mA ≤ IO ≤ 750 mA
Regload
−
−
46
17
240
120
mV
Output Voltage
−14.5 Vdc ≥ VI ≥ −27 Vdc, 5.0 mA ≤ IO ≤ 1.0 A, P ≤ 15 W
VO
−11.4 − −12.6
Vdc
Input Bias Current (TJ = +25°C) IIB −4.4 8.0 mA
Input Bias Current Change
−14.5 Vdc ≥ VI ≥ −30 Vdc
5.0 mA ≤ IO ≤ 1.5 A
DIIB
−
−
−
−
1.0
0.5
mA
Output Noise Voltage (TA = +25°C, 10 Hz ≤ f ≤ 100 kHz) Vn−75 −mV
Ripple Rejection (IO = 20 mA, f = 120 Hz) RR −61 −dB
Dropout Voltage (IO = 1.0 A, TJ = +25°C) VI−VO−1.3 −Vdc
Average Temperature Coefficient of Output Voltage
IO = 5.0 mA, Tlow* ≤ TJ ≤ +125°C
DVO/DT
− −1.0 −
mV/°C
MC7912AC
ELECTRICAL CHARACTERISTICS (VI = −19 V, IO = 500 mA, Tlow* < TJ < +125°C, unless otherwise noted.)
Characteristics Symbol Min Typ Max Unit
Output Voltage (TJ = +25°C) VO−11.75 −12 −12.25 Vdc
Line Regulation (Note 4)
−16 Vdc ≥ VI ≥ −22 Vdc; IO = 1.0 A, TJ = +25°C
−16 Vdc ≥ VI ≥ −22 Vdc; IO = 1.0 A
−14.8 Vdc ≥ VI ≥ −30 Vdc; IO = 500 mA
−14.5 Vdc ≥ VI ≥ −27 Vdc; IO = 1.0 A, TJ = +25°C
Regline
−
−
−
−
6.0
24
24
13
60
120
120
120
mV
Load Regulation (Note 4)
5.0 mA ≤ IO ≤ 1.5 A, TJ = +25°C
250 mA ≤ IO ≤ 750 mA
5.0 mA ≤ IO ≤ 1.0 A
Regload
−
−
−
46
17
35
150
75
150
mV
Output Voltage
−14.8 Vdc ≥ VI ≥ −27 Vdc, 5.0 mA ≤ IO ≤ 1.0 A, P ≤ 15 W
VO
−11.5 − −12.5
Vdc
Input Bias Current IIB −4.4 8.0 mA
Input Bias Current Change
−15 Vdc ≥ VI ≥ −30 Vdc
5.0 mA ≤ IO ≤ 1.0 A
5.0 mA ≤ IO ≤ 1.5 A, TJ = +25°C
DIIB
−
−
−
−
−
−
0.8
0.5
0.5
mA
Output Noise Voltage (TA = +25°C, 10 Hz ≤ f ≤ 100 kHz) Vn−75 −mV
Ripple Rejection (IO = 20 mA, f = 120 Hz) RR −61 −dB
Dropout Voltage (IO = 1.0 A, TJ = +25°C) VI−VO−1.3 −Vdc
Average Temperature Coefficient of Output Voltage
IO = 5.0 A, Tlow* ≤ TJ ≤ +125°C
DVO/DT
− −1.0 −
mV/°C
4. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account
separately. Pulse testing with low duty cycle is used.
*Tlow = −40°C for MC7912B and Tlow = 0°C for MC7912C.
MC7900 Series
http://onsemi.com
6
MC7915B, MC7915C
ELECTRICAL CHARACTERISTICS (VI = −23 V, IO = 500 mA, Tlow* < TJ < +125°C, unless otherwise noted.)
Characteristics Symbol Min Typ Max Unit
Output Voltage (TJ = +25°C) VO−14.4 −15 −15.6 Vdc
Line Regulation (Note 5)
(TJ = +25°C, IO = 100 mA)
−17.5 Vdc ≥ VI ≥ −30 Vdc
−20 Vdc ≥ VI ≥ −26 Vdc
(TJ = +25°C, IO = 500 mA)
−17.5 Vdc ≥ VI ≥ −30 Vdc
−20 Vdc ≥ VI ≥ −26 Vdc
Regline
−
−
−
−
14
6.0
57
27
150
75
300
150
mV
Load Regulation, TJ = +25°C (Note 5)
5.0 mA ≤ IO ≤ 1.5 A
250 mA ≤ IO ≤ 750 mA
Regload
−
−
68
25
300
150
mV
Output Voltage
−17.5 Vdc ≥ VI ≥ −30 Vdc, 5.0 mA ≤ IO ≤ 1.0 A, P ≤ 15 W
VO
−14.25 − −15.75
Vdc
Input Bias Current (TJ = +25°C) IIB −4.4 8.0 mA
Input Bias Current Change
−17.5 Vdc ≥ VI ≥ −30 Vdc
5.0 mA ≤ IO ≤ 1.5 A
DIIB
−
−
−
−
1.0
0.5
mA
Output Noise Voltage (TA = +25°C, 10 Hz ≤ f ≤ 100 kHz) Vn−90 −mV
Ripple Rejection (IO = 20 mA, f = 120 Hz) RR −60 −dB
Dropout Voltage (IO = 1.0 A, TJ = +25°C) VI−VO−1.3 −Vdc
Average Temperature Coefficient of Output Voltage
IO = 5.0 A, Tlow* ≤ TJ ≤ +125°C
DVO/DT
− −1.0 −
mV/°C
MC7915AC
ELECTRICAL CHARACTERISTICS (VI = −23 V, IO = 500 mA, Tlow* < TJ < +125°C, unless otherwise noted.)
Characteristics Symbol Min Typ Max Unit
Output Voltage (TJ = +25°C) VO−14.7 −15 −15.3 Vdc
Line Regulation (Note 5)
−20 Vdc ≥ VI ≥ −26 Vdc, IO = 1.0 A, TJ = +25°C
−20 Vdc ≥ VI ≥ −26 Vdc, IO = 1.0 A,
−17.9 Vdc ≥ VI ≥ −30 Vdc, IO = 500 mA
−17.5 Vdc ≥ VI ≥ −30 Vdc, IO = 1.0 A, TJ = +25°C
Regline
−
−
−
−
27
57
57
57
75
150
150
150
mV
Load Regulation (Note 5)
5.0 mA ≤ IO ≤ 1.5 A, TJ = +25°C
250 mA ≤ IO ≤ 750 mA
5.0 mA ≤ IO ≤ 1.0 A
Regload
−
−
−
68
25
40
150
75
150
mV
Output Voltage
−17.9 Vdc ≥ VI ≥ −30 Vdc, 5.0 mA ≤ IO ≤ 1.0 A, P ≤ 15 W
VO
−14.4 − −15.6
Vdc
Input Bias Current IIB −4.4 8.0 mA
Input Bias Current Change
−17.5 Vdc ≥ VI ≥ −30 Vdc
5.0 mA ≤ IO ≤ 1.0 A
5.0 mA ≤ IO ≤ 1.5 A, TJ = +25°C
DIIB
−
−
−
−
−
−
0.8
0.5
0.5
mA
Output Noise Voltage (TA = +25°C, 10 Hz ≤ f ≤ 100 kHz) Vn−90 −mV
Ripple Rejection (IO = 20 mA, f = 120 Hz) RR −60 −dB
Dropout Voltage (IO = 1.0 A, TJ = +25°C) VI−VO−1.3 −Vdc
Average Temperature Coefficient of Output Voltage
IO = 5.0 mA, Tlow* ≤ TJ ≤ +125°C
DVO/DT
− −1.0 −
mV/°C
5. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account
separately. Pulse testing with low duty cycle is used.
*Tlow = −40°C for MC7915B and Tlow = 0°C for MC7915C.
MC7900 Series
http://onsemi.com
7
MC7918C
ELECTRICAL CHARACTERISTICS (VI = −27 V, IO = 500 mA, 0°C < TJ < +125°C, unless otherwise noted.)
Characteristics Symbol Min Typ Max Unit
Output Voltage (TJ = +25°C) VO−17.3 −18 −18.7 Vdc
Line Regulation (Note 6)
(TJ = +25°C, IO = 100 mA)
−21 Vdc ≥ VI ≥ −33 Vdc
−24 Vdc ≥ VI ≥ −30 Vdc
(TJ = +25°C, IO = 500 mA)
−21 Vdc ≥ VI ≥ −33 Vdc
−24 Vdc ≥ VI ≥ −30 Vdc
Regline
−
−
−
−
25
10
90
50
180
90
360
180
mV
Load Regulation, TJ = +25°C (Note 6)
5.0 mA ≤ IO ≤ 1.5 A
250 mA ≤ IO ≤ 750 mA
Regload
−
−
110
55
360
180
mV
Output Voltage
−21 Vdc ≥ VI ≥ −33 Vdc, 5.0 mA ≤ IO ≤ 1.0 A, P ≤ 15 W
VO
−17.1 − −18.9
Vdc
Input Bias Current (TJ = +25°C) IIB −4.5 8.0 mA
Input Bias Current Change
−21 Vdc ≥ VI ≥ −33 Vdc
5.0 mA ≤ IO ≤ 1.5 A
DIIB
−
−
−
−
1.0
0.5
mA
Output Noise Voltage (TA = +25°C, 10 Hz ≤ f ≤ 100 kHz) Vn−110 −mV
Ripple Rejection (IO = 20 mA, f = 120 Hz) RR −59 −dB
Dropout Voltage (IO = 1.0 A, TJ = +25°C) VI−VO−1.3 −Vdc
Average Temperature Coefficient of Output Voltage
IO = 5.0 mA, 0°C ≤ TJ ≤ +125°C
DVO/DT
− −1.0 −
mV/°C
MC7924B, MC7924C
ELECTRICAL CHARACTERISTICS (VI = −33 V, IO = 500 mA, Tlow* < TJ < +125°C, unless otherwise noted.)
Characteristics Symbol Min Typ Max Unit
Output Voltage (TJ = +25°C) VO−23 −24 −25 Vdc
Line Regulation (Note 6)
(TJ = +25°C, IO = 100 mA)
−27 Vdc ≥ VI ≥ −38 Vdc
−30 Vdc ≥ VI ≥ −36 Vdc
(TJ = +25°C, IO = 500 mA)
−27 Vdc ≥ VI ≥ −38 Vdc
−30 Vdc ≥ VI ≥ −36 Vdc
Regline
−
−
−
−
31
14
118
70
240
120
470
240
mV
Load Regulation, TJ = +25°C (Note 6)
5.0 mA ≤ IO ≤ 1.5 A
250 mA ≤ IO ≤ 750 mA
Regload
−
−
150
85
480
240
mV
Output Voltage
−27 Vdc ≥ VI ≥ −38 Vdc, 5.0 mA ≤ IO ≤ 1.0 A, P ≤ 15 W
VO
−22.8 − −25.2
Vdc
Input Bias Current (TJ = +25°C) IIB −4.6 8.0 mA
Input Bias Current Change
−27 Vdc ≥ VI ≥ −38 Vdc
5.0 mA ≤ IO ≤ 1.5 A
DIIB
−
−
−
−
1.0
0.5
mA
Output Noise Voltage (TA = +25°C, 10 Hz ≤ f ≤ 100 kHz) Vn−170 −mV
Ripple Rejection (IO = 20 mA, f = 120 Hz) RR −56 −dB
Dropout Voltage (IO = 1.0 A, TJ = +25°C) VI−VO−1.3 −Vdc
Average Temperature Coefficient of Output Voltage
IO = 5.0 mA, Tlow* ≤ TJ ≤ +125°C
DVO/DT
− −1.0 −
mV/°C
6. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account
separately. Pulse testing with low duty cycle is used.
*Tlow = −40°C for MC7924B and Tlow = 0°C for MC7924C.
MC7900 Series
http://onsemi.com
8
Figure 2. Worst Case Power Dissipation as a
Function of Ambient Temperature
Figure 3. Peak Output Current as a Function
of Input−Output Differential Voltage
Figure 4. Ripple Rejection as a
Function of Frequency
Figure 5. Ripple Rejection as a Function
of Output Voltage
Figure 6. Output Voltage as a Function
of Junction Temperature
Figure 7. Quiescent Current as a
Function of Temperature
, POWER DISSIPATION (W)
D
P
Infinite Heatsink
qHS = 5°C/W
qHS = 15°C/W
No Heatsink
qJC = 5°C/W
qJA = 65°C/W
PD(max) = 15W
, OUTPUT CURRENT (A)
O
I
RR, RIPPLE REJECTION (dB)
Vin = -11 V
VO = -6.0 V
IO = 20 mA
RR, RIPPLE REJECTION (dB)
f = 120 Hz
IO = 20 mA
DVin = 1.0 V(RMS)
, OUTPUT VOLTAGE (-V)
O
V
Vin = -11 V
VD = -6.0 V
IO = 20 mA
, INPUT BIAS CURRENT (mA)
IB
I
Vin = -11 V
VO = -6.0 V
IO = 20 mA
TJ = +25°C
20
10
5.0
4.0
3.0
2.0
1.0
0.5
0.4
0.3
0.2
0.1
2.5
2.0
1.5
1.0
0.5
0
100
80
60
40
20
80
70
60
50
40
6.26
6.22
6.18
6.14
6.10
6.06
5.2
5.0
4.8
4.6
4.4
4.2
25 50 75 100 125 150
TA, AMBIENT TEMPERATURE (°C)
0 3.0 6.0 9.0 12 15 18 21 24 27 30
|VI -VO| INPUT-OUTPUT VOLTAGE DIFFERENTIAL (V)
10 100 1.0 k 10 k 100 k
f, FREQUENCY (Hz)
2.0 4.0 6.0 8.0 10 12 14 16 18 20 22
VO, OUTPUT VOLTAGE (V)
-25 0 25 50 75 100 125 150 175
TJ, JUNCTION TEMPERATURE (°C)
0 25 50 75 100 125
TJ, JUNCTION TEMPERATURE (°C)
0
MC7900 Series
http://onsemi.com
9
APPLICATIONS INFORMATION
Design Considerations
The MC7900 Series of fixed voltage regulators are
designed with Thermal overload Protection that shuts down
the circuit when subjected to an excessive power overload
condition. Internal Short Circuit Protection that limits the
maximum current the circuit will pass, and Output Transistor
Safe−Area Compensation that reduces the output short circuit
current as the voltage across the pass transistor is increased.
In many low current applications, compensation
capacitors are not required. However, it is recommended
that the regulator input be bypassed with a capacitor if the
regulator is connected to the power supply filter with long
wire lengths, or if the output load capacitance is large. An
input bypass capacitor should be selected to provide good
high−frequency characteristics to insure stable operation
under all load conditions. A 0.33 mF or larger tantalum,
mylar, or other capacitor having low internal impedance at
high frequencies should be chosen. The capacitor chosen
should have an equivalent series resistance of less than
0.7 W. The bypass capacitor should be mounted with the
shortest possible leads directly across the regulators input
terminals. Normally good construction techniques should be
used to minimize ground loops and lead resistance drops
since the regulator has no external sense lead. Bypassing the
output is also recommended.
Figure 8. Current Regulator
-20 V
Input MC7905 10
R
IO = 200 mA
-
VO ≤ 10 V
1.0 mF
Gnd Gnd
+1.0 mF+
The MC7905, −5.0 V regulator can be used as a constant
current source when connected as above. The output current
is the sum of resistor R current and quiescent bias current as
follows:
IO+5.0 V
R)IB
The quiescent current for this regulator is typically 4.3
mA. The 5.0 V regulator was chosen to minimize dissipation
and to allow the output voltage to operate to within 6.0 V
below the input voltage.
Figure 9. Current Boost Regulator
(−5.0 V @ 4.0 A, with 5.0 A Current Limiting)
*Mounted on heatsink.
-10 V
Input
0.56
0.56
0.56
MJE200*
or Equiv
5.6
2N3055*
or Equiv
MC7905*
1.0 mF
-5.0 V
Output
Gnd Gnd
++1.0 mF
10 mF+
When a boost transistor is used, short circuit currents are
equal to the sum of the series pass and regulator limits, which
are measured at 3.2 A and 1.8 A respectively in this case.
Series pass limiting is approximately equal to 0.6 V/RSC.
Operation beyond this point to the peak current capability of
the MC7905C is possible if the regulator is mounted on a
heatsink; otherwise thermal shutdown will occur when the
additional load current is picked up by the regulator.
Figure 10. Operational Amplifier Supply
+20 V
Input
+15 V
Output
0.33 mF1N4001G
or Equiv
Gnd Gnd
1.0 mF
+
-20 V
Input
-15 V
Output
MC7815
MC7915
+
+
+
1.0 mF
1.0 mF
1.0 mF1N4001G
or Equiv
Clamp diode
1N4001G or Equiv
1N4001G or Equiv
The MC7815 and MC7915 positive and negative
regulators may be connected as shown to obtain a dual
power supply for operational amplifiers. A clamp diode
should be used at the output of the MC7815 to prevent
potential latch−up problems whenever the output of the
positive regulator (MC7815) is drawn below ground with an
output current greater than 200 mA.
MC7900 Series
http://onsemi.com
10
Protection Diodes
When external capacitors are used with MC7900 series
regulator it is sometimes necessary to add protection diodes
to prevent the capacitors from discharging through low
current points into the regulator or from output polarity
reversals. Generally, no protection diode is required for
values of output capacitance less then 10mF. Figure 11 shows
the MC7915 with the recommended protection diodes.
•Opposite Polarity Protection
Diode D1 protects the regulator from output polarity
reversals during startup, power off and short-circuit
operation.
•Reverse-bias Protection
Diode D2 prevents output capacitor from discharging thru
the MC7915 during an input short circuit or fast switch off
of power supply.
Figure 11. Protection Diodes
Gnd Gnd
+
-20 V
Input
-15 V
Output
MC7915
+
1.0 mF 1.0 mF1N4001G
or Equiv
D1
1N4001G
or Equiv
D2
DEFINITIONS
Line Regulation − The change in output voltage for a
change in the input voltage. The measurement is made under
conditions of low dissipation or by using pulse techniques
such that the average chip temperature is not significantly
affected.
Load Regulation − The change in output voltage for a
change in load current at constant chip temperature.
Maximum Power Dissipation − The maximum total
device dissipation for which the regulator will operate
within specifications.
Input Bias Current − That part of the input current that
is not delivered to the load.
Output Noise Voltage − The rms AC voltage at the
output, with constant load and no input ripple, measured
over a specified frequency range.
Long Term Stability − Output voltage stability under
accelerated life test conditions with the maximum rated
voltage listed in the devices’ electrical characteristics and
maximum power dissipation.
Figure 12. D2PAK Thermal Resistance and Maximum
Power Dissipation versus P.C.B. Copper Length
R , THERMAL RESISTANCE
JAθ
JUNCTION‐TO‐AIR ( C/W)°
PD(max) for TA = +50°C
ÎÎÎ
ÎÎÎ
ÎÎÎ
ÎÎÎ
PD, MAXIMUM POWER DISSIPATION (W)
30
40
50
60
70
80
010203025155.0
L, LENGTH OF COPPER (mm)
Minimum
Size Pad
2.0 oz. Copper
L
L
Free Air
Mounted
Vertically
RqJA
1.0
1.5
2.0
2.5
3.0
3.5
MC7900 Series
http://onsemi.com
11
ORDERING INFORMATION
Device
Nominal
Output Voltage
Output Voltage
Tolerance Package
Operating
Temperature Range Shipping†
MC7905ACD2T −5.0 V 2% D2PAK TJ = 0°C to +125°C50 Units/Rail
MC7905ACD2TG D2PAK
(Pb−Free)
50 Units/Rail
MC7905ACD2TR4 D2PAK 800 Tape & Reel
MC7905ACD2TR4G D2PAK
(Pb−Free)
800 Tape & Reel
MC7905ACT TO−220 50 Units/Rail
MC7905ACTG TO−220
(Pb−Free)
50 Units/Rail
MC7905BD2T 4% D2PAK TJ = −40°C to +125°C50 Units/Rail
MC7905BD2TG D2PAK
(Pb−Free)
50 Units/Rail
MC7905BD2TR4 D2PAK 800 Tape & Reel
MC7905BD2TR4G D2PAK
(Pb−Free)
800 Tape & Reel
MC7905BT TO−220 50 Units/Rail
MC7905BTG TO−220
(Pb−Free)
50 Units/Rail
MC7905CD2T D2PAK TJ = 0°C to +125°C50 Units/Rail
MC7905CD2TG D2PAK
(Pb−Free)
50 Units/Rail
MC7905CD2TR4 D2PAK 800 Tape & Reel
MC7905CD2TR4G D2PAK
(Pb−Free)
800 Tape & Reel
MC7905CT TO−220 50 Units/Rail
MC7905CTG TO−220
(Pb−Free)
50 Units/Rail
MC7905.2CT −5.2 V 4% TO−220 TJ = 0°C to +125°C50 Units/Rail
MC7905.2CTG TO−220
(Pb−Free)
50 Units/Rail
MC7906CD2T −6.0 V 4% D2PAK TJ = 0°C to +125°C50 Units/Rail
MC7906CD2TG D2PAK
(Pb−Free)
50 Units/Rail
MC7906CT TO−220 50 Units/Rail
MC7906CTG TO−220
(Pb−Free)
50 Units/Rail
MC7908ACT −8.0 V 2% TO−220 TJ = 0°C to +125°C50 Units/Rail
MC7908ACTG TO−220
(Pb−Free)
50 Units/Rail
MC7908CD2T 4% D2PAK 50 Units/Rail
MC7908CD2TG D2PAK
(Pb−Free)
50 Units/Rail
MC7908CD2TR4 D2PAK 800 Tape & Reel
MC7908CD2TR4G D2PAK
(Pb−Free)
800 Tape & Reel
MC7908CT TO−220 50 Units/Rail
MC7908CTG TO−220
(Pb−Free)
50 Units/Rail
MC7900 Series
http://onsemi.com
12
Device Shipping†
Operating
Temperature Range
Package
Output Voltage
Tolerance
Nominal
Output Voltage
MC7912ACD2T −12 V 2% D2PAK TJ = 0°C to +125°C50 Units/Rail
MC7912ACD2TG D2PAK
(Pb−Free)
50 Units/Rail
MC7912ACD2TR4 D2PAK 800 Tape & Reel
MC7912ACD2TR4G D2PAK
(Pb−Free)
800 Tape & Reel
MC7912ACT TO−220 50 Units/Rail
MC7912ACTG TO−220
(Pb−Free)
50 Units/Rail
MC7912BD2T 4% D2PAK TJ = −40°C to +125°C50 Units/Rail
MC7912BD2TG D2PAK
(Pb−Free)
50 Units/Rail
MC7912BD2TR4 D2PAK 800 Tape & Reel
MC7912BD2TR4G D2PAK
(Pb−Free)
800 Tape & Reel
MC7912BT TO−220 50 Units/Rail
MC7912BTG TO−220
(Pb−Free)
50 Units/Rail
MC7912CD2T D2PAK TJ = 0°C to +125°C50 Units/Rail
MC7912CD2TG D2PAK
(Pb−Free)
50 Units/Rail
MC7912CD2TR4 D2PAK 800 Tape & Reel
MC7912CD2TR4G D2PAK
(Pb−Free)
800 Tape & Reel
MC7912CT TO−220 50 Units/Rail
MC7912CTG TO−220
(Pb−Free)
50 Units/Rail
MC7900 Series
http://onsemi.com
13
Device Shipping†
Operating
Temperature Range
Package
Output Voltage
Tolerance
Nominal
Output Voltage
MC7915ACD2T − 15 V 2% D2PAK TJ = 0°C to +125°C50 Units/Rail
MC7915ACD2TG D2PAK
(Pb−Free)
50 Units/Rail
MC7915ACT TO−220 50 Units/Rail
MC7915ACTG TO−220
(Pb−Free)
50 Units/Rail
MC7915BD2T 4% D2PAK TJ = −40°C to +125°C50 Units/Rail
MC7915BD2TG D2PAK
(Pb−Free)
50 Units/Rail
MC7915BT TO−220 50 Units/Rail
MC7915BTG TO−220
(Pb−Free)
50 Units/Rail
MC7915BD2TR4G D2PAK
(Pb−Free)
800 Tape & Reel
MC7915CD2T D2PAK TJ = 0°C to +125°C50 Units/Rail
MC7915CD2TG D2PAK
(Pb−Free)
50 Units/Rail
MC7915CD2TR4 D2PAK 800 Tape & Reel
MC7915CD2TR4G D2PAK
(Pb−Free)
800 Tape & Reel
MC7915CT TO−220 50 Units/Rail
MC7915CTG TO−220
(Pb−Free)
50 Units/Rail
MC7918CT − 18 V 4% TO−220 TJ = 0°C to +125°C50 Units/Rail
MC7918CTG TO−220
(Pb−Free)
50 Units/Rail
MC7924BT − 24 V 4% TO−220 TJ = −40°C to +125°C50 Units/Rail
MC7924BTG TO−220
(Pb−Free)
50 Units/Rail
MC7924CD2T D2PAK TJ = 0°C to +125°C50 Units/Rail
MC7924CD2TG D2PAK
(Pb−Free)
50 Units/Rail
MC7924CT TO−220 50 Units/Rail
MC7924CTG TO−220
(Pb−Free)
50 Units/Rail
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
MC7900 Series
http://onsemi.com
14
TO−220
T SUFFIX
CASE 221AB
MARKING DIAGRAMS
xx = Nominal Voltage
A = Assembly Location
WL = Wafer Lot
Y = Year
WW = Work Week
G = Pb−Free Device
1
MC
79xxACT
AWLYWWG
23 1
MC
7905.2CT
AWLYWWG
23 1
MC
79xxBT
AWLYWWG
23 1
MC
79xxCT
AWLYWWG
23
D2PAK
D2T SUFFIX
CASE 936
MC
79xxACD2T
AWLYWWG
1
2
3
MC
79xxBD2T
AWLYWWG
1
2
3
MC
79xxCD2T
AWLYWWG
1
2
3
MC7900 Series
http://onsemi.com
15
PACKAGE DIMENSIONS
D
2
PAK
D2T SUFFIX
CASE 936−03
ISSUE D
5 REF5 REF
V
U
TERMINAL 4
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCHES.
3. TAB CONTOUR OPTIONAL WITHIN
DIMENSIONS A AND K.
4. DIMENSIONS U AND V ESTABLISH A MINIMUM
MOUNTING SURFACE FOR TERMINAL 4.
5. DIMENSIONS A AND B DO NOT INCLUDE
MOLD FLASH OR GATE PROTRUSIONS. MOLD
FLASH AND GATE PROTRUSIONS NOT TO
EXCEED 0.025 (0.635) MAXIMUM.
6. SINGLE GAUGE DESIGN WILL BE SHIPPED
AFTER FPCN EXPIRATION IN OCTOBER 2011.
DIM
A
MIN MAX MIN MAX
MILLIMETERS
0.386 0.403 9.804 10.236
INCHES
B0.356 0.368 9.042 9.347
C0.170 0.180 4.318 4.572
D0.026 0.036 0.660 0.914
E0.045 0.055 1.143 1.397
F0.051 REF 1.295 REF
G0.100 BSC 2.540 BSC
H0.539 0.579 13.691 14.707
J0.125 MAX 3.175 MAX
K0.050 REF 1.270 REF
L0.000 0.010 0.000 0.254
M0.088 0.102 2.235 2.591
N0.018 0.026 0.457 0.660
P0.058 0.078 1.473 1.981
R
S0.116 REF 2.946 REF
U0.200 MIN 5.080 MIN
V0.250 MIN 6.350 MIN
__
A
12 3
K
F
B
J
S
H
D
M
0.010 (0.254) T
E
OPTIONAL
CHAMFER
*For additional information on our Pb−Free strategy and soldering
details, please download the ON Semiconductor Soldering and
Mounting Techniques Reference Manual, SOLDERRM/D.
SOLDERING FOOTPRINT*
8.380
5.080
DIMENSIONS: MILLIMETERS
PITCH
2X
16.155
1.016
2X
10.490
3.504
BOTTOM VIEW
OPTIONAL CONSTRUCTIONS
TOP VIEW
SIDE VIEW
DUAL GAUGE
BOTTOM VIEW
L
T
P
RDETAIL C
SEATING
PLANE
2X
G
NM
CONSTRUCTION
D
C
DETAIL C
E
OPTIONAL
CHAMFER
SIDE VIEW
SINGLE GAUGE
CONSTRUCTION
S
C
DETAIL C
TT
D
E0.018 0.026 0.457 0.660
S
MC7900 Series
http://onsemi.com
16
PACKAGE DIMENSIONS
TO−220, SINGLE GAUGE
T SUFFIX
CASE 221AB−01
ISSUE A
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCHES.
3. DIMENSION Z DEFINES A ZONE WHERE ALL BODY AND
LEAD IRREGULARITIES ARE ALLOWED.
4. PRODUCT SHIPPED PRIOR TO 2008 HAD DIMENSIONS
S = 0.045 - 0.055 INCHES (1.143 - 1.397 MM)
DIM MIN MAX MIN MAX
MILLIMETERSINCHES
A0.570 0.620 14.48 15.75
B0.380 0.405 9.66 10.28
C0.160 0.190 4.07 4.82
D0.025 0.035 0.64 0.88
F0.142 0.147 3.61 3.73
G0.095 0.105 2.42 2.66
H0.110 0.155 2.80 3.93
J0.018 0.025 0.46 0.64
K0.500 0.562 12.70 14.27
L0.045 0.060 1.15 1.52
N0.190 0.210 4.83 5.33
Q0.100 0.120 2.54 3.04
R0.080 0.110 2.04 2.79
S0.020 0.024 0.508 0.61
T0.235 0.255 5.97 6.47
U0.000 0.050 0.00 1.27
V0.045 --- 1.15 ---
Z--- 0.080 --- 2.04
B
Q
H
Z
L
V
G
N
A
K
F
123
4
D
SEATING
PLANE
−T−
C
S
T
U
R
J
ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice
to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability
arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages.
“Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All
operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. SCILLC does not convey any license under its patent rights
nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications
intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should
Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates,
and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death
associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal
Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.
MC7900/D
PUBLICATION ORDERING INFORMATION
N. American Technical Support: 800−282−9855 Toll Free
USA/Canada
Europe, Middle East and Africa Technical Support:
Phone: 421 33 790 2910
Japan Customer Focus Center
Phone: 81−3−5773−3850
LITERATURE FULFILLMENT:
Literature Distribution Center for ON Semiconductor
P.O. Box 5163, Denver, Colorado 80217 USA
Phone: 303−675−2175 or 800−344−3860 Toll Free USA/Canada
Fax: 303−675−2176 or 800−344−3867 Toll Free USA/Canada
Email: orderlit@onsemi.com
ON Semiconductor Website: www.onsemi.com
Order Literature: http://www.onsemi.com/orderlit
For additional information, please contact your local
Sales Representative
