1
2
3
4
8
7
6
5
OUTPUT
INPUT†
INPUT†
NC
NC
INPUT†
INPUT†
COMMON
D PACKAGE
(TOP VIEW)
NC – No internal connection
LP PACKAGE
(TOP VIEW)
†Internally connected
OUTPUT
INPUT
COMMON
MC79L00 SERIES
NEGATIVE-VOLTAGE REGULATORS
SLVS011C – OCTOBER 1982 – REVISED APRIL 2001
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
D
3-Terminal Regulators
D
Output Current up to 100 mA
D
No External Components Required
D
Internal Thermal-Overload Protection
D
Internal Short-Circuit Current Limiting
D
Direct Replacement for Motorola MC79L00
Series
D
Available in 5% or 10% Selections
description
This series of fixed negative-voltage
integrated-circuit voltage regulators is designed
for a wide range of applications. These include
on-card regulation for elimination of noise and
distribution problems associated with single-point
regulation. In addition, they can be used to control
series pass elements to make high-current
voltage-regulator circuits. One of these regulators
can deliver up to 100 mA of output current. The
internal current-limiting and thermal-shutdown
features essentially make the regulators immune
to overload. When used as a replacement for a
zener-diode and resistor combination, these
devices can provide an effective improvement in
output impedance of two orders of magnitude,
with lower bias current.
The MC79L00C series is characterized for
operation over the virtual junction temperature
range of 0°C to 125°C.
AVAILABLE OPTIONS
PACKAGED DEVICES
NOMINAL
OUTPUT
OUTPUT VOLTAGE TOLERANCE
TJ
OUTPUT
VOLTAGE
(
V
)
SMALL OUTLINE
(D) PLASTIC CYLINDRICAL
(LP)
(V)
5% 10% 5% 10%
–5 MC79L05ACD – MC79L05ACLP –
0°C to 125°C–12 MC79L12ACD MC79L12CD MC79L12ACLP MC79L12CLP
–15 MC79L15ACD MC79L15CD MC79L15ACLP –
The D package is available taped and reeled. Add the suffix R to the device type (e.g., MC79L05ACDR).
The LP package is available taped and reeled or in ammo pack. Add the suffix M to the device type for
ammo pack (e.g., MC79L15ACLPM).
Copyright 2001, Texas Instruments Incorporated
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
MC79L00 SERIES
NEGATIVE-VOLTAGE REGULATORS
SLVS011C – OCTOBER 1982 – REVISED APRIL 2001
2POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
equivalent schematic
OUTPUT
INPUT
COMMON
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)†
Input voltage: MC79L05 –30 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
MC79L12, MC79L15 –35 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air, case, or virtual junction temperature 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Package thermal impedance, θJA (see Notes 1 and 2): D package 97°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . .
LP package 156°C/W. . . . . . . . . . . . . . . . . . . . . . . . . .
Lead temperature 1.6 mm (1/16 inch) from case for 10 seconds 260°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, Tstg –65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
†Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only , and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied.
Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES: 1. Maximum power dissipation is a function of TJ(max), θJA, and TA. The maximum allowable power dissipation at any allowable ambient
temperature is PD = (TJ(max) – TA)/θJA. Operating at the absolute maximum TJ of 150°C can impact reliability.
2. The package thermal impedance is calculated in accordance with JESD 51-7.
recommended operating conditions
MIN MAX UNIT
MC79L05 –7–20
VIInput voltage MC79L12 –14.5 –27 V
MC79L15 –17.5 –30
IOOutput current 100 mA
TJOperating virtual junction temperature 0 125 °C
MC79L00 SERIES
NEGATIVE-VOLTAGE REGULATORS
SLVS011C – OCTOBER 1982 – REVISED APRIL 2001
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics at specified virtual junction temperature, VI = –10 V, IO = 40 mA (unless
otherwise noted)
PARAMETER
TEST CONDITIONS†
TJ
MC79L05C MC79L05AC
UNIT
PARAMETER
TEST
CONDITIONS†
T
JMIN TYP MAX MIN TYP MAX
UNIT
‡
25°C–4.6 –5–5.4 –4.8 –5–5.2
Output voltage
‡
VI = –7 V to –20 V,
IO = 1 mA to 40 mA 0°C to 125°C–4.5 –5.5 –4.75 –5.25 V
VI = –10 V, IO = 1 mA to 70 mA 0°C to 125°C–4.5 –5.5 –4.75 –5.25
In
p
ut regulation
VI = –7 V to –20 V
25°C
200 150
mV
Inp
u
t
reg
u
lation
VI = –8 V to –20 V
25°C
150 100
mV
Ripple rejection VI = –8 V to –18 V, f = 120 Hz 25°C 40 49 41 49 dB
Out
p
ut regulation
IO = 1 mA to 100 mA
25°C
60 60
mV
O
u
tp
u
t
reg
u
lation
IO = 1 mA to 40 mA
25°C
30 30
mV
Output noise voltage f = 10 Hz to 100 kHz 25°C 40 40 µV
Dropout voltage IO = 40 mA 25°C 1.7 1.7 V
Bias current
25°C 6 6
mA
Bias
c
u
rrent
125°C 5.5 5.5
mA
Bias current change
VI = –8 V to –20 V
0°C to 125°C
1.5 1.5
mA
Bias
c
u
rrent
change
IO = 1 mA to 40 mA
0°C
to
125°C
0.2 0.1
mA
†All characteristics are measured with a 0.33-µF capacitor across the input and a 0.1-µF capacitor across the output. Pulse-testing techniques are
used to maintain the junction temperature as close to the ambient temperature as possible. Thermal effects must be taken into account separately .
‡This specification applies only for dc power dissipation permitted by absolute maximum ratings.
electrical characteristics at specified virtual junction temperature, VI = –19 V, IO = 40 mA (unless
otherwise noted)
PARAMETER
TEST CONDITIONS†
TJ
MC79L12C MC79L12AC
UNIT
PARAMETER
TEST
CONDITIONS†
T
JMIN TYP MAX MIN TYP MAX
UNIT
‡
25°C–11.1 –12 –12.9 –11.5 –12 –12.5
Output voltage
‡
VI = –14.5 V to –27 V,
IO = 1 mA to 40 mA 0°C to 125°C–10.8 –13.2 –11.4 –12.6 V
VI = –19 V, IO = 1 mA to 70 mA 0°C to 125°C–10.8 –13.2 –11.4 –12.6
In
p
ut regulation
VI = –14.5 V to –27 V
25°C
250 250
mV
Inp
u
t
reg
u
lation
VI = –16 V to –27 V
25°C
200 200
mV
Ripple rejection VI = –15 V to –25 V, f = 120 Hz 25°C 36 42 37 42 dB
Out
p
ut regulation
IO = 1 mA to 100 mA
25°C
100 100
mV
O
u
tp
u
t
reg
u
lation
IO = 1 mA to 40 mA
25°C
50 50
mV
Output noise voltage f = 10 Hz to 100 kHz 25°C 80 80 µV
Dropout voltage IO = 40 mA 25°C 1.7 1.7 V
Bias current
25°C 6.5 6.5
mA
Bias
c
u
rrent
125°C 6 6
mA
Bias current change
VI = –16 V to –27 V
0°C to 125°C
1.5 1.5
mA
Bias
c
u
rrent
change
IO = 1 mA to 40 mA
0°C
to
125°C
0.2 0.1
mA
†All characteristics are measured with a 0.33-µF capacitor across the input and a 0.1-µF capacitor across the output. Pulse-testing techniques are
used to maintain the junction temperature as close to the ambient temperature as possible. Thermal effects must be taken into account separately .
‡This specification applies only for dc power dissipation permitted by absolute maximum ratings.
MC79L00 SERIES
NEGATIVE-VOLTAGE REGULATORS
SLVS011C – OCTOBER 1982 – REVISED APRIL 2001
4POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics at specified virtual junction temperature, VI = –23 V, IO = 40 mA (unless
otherwise noted)
PARAMETER
TEST CONDITIONS†
TJ
MC79L15C MC79L15AC
UNIT
PARAMETER
TEST
CONDITIONS†
T
JMIN TYP MAX MIN TYP MAX
UNIT
‡
25°C–13.8 –15 –16.2 –14.4 –15 –15.6
Output voltage‡
V
I
= –17.5 V to –30 V,
0°C to 125°C
13 5
16 5
14 25
15 75
V
O
u
t
pu
t
vo
lt
age
‡
I,
IO = 1 mA to 40 mA
0°C
to
125°C
–
13
.
5
–
16
.
5
–
14
.
25
–
15
.
75
V
VI23 V IO1mAto70mA
0°C to 125°C
13 5
16 5
14 25
15 75
V
I = –
23
V
,
I
O =
1
mA
to
70
mA
0°C
to
125°C
–
13
.
5
–
16
.
5
–
14
.
25
–
15
.
75
In
p
ut regulation
VI = –17.5 V to –30 V
25°C
300 300
mV
Inp
u
t
reg
u
lation
VI = –17.5 V to –30 V
25°C
250 250
mV
Ri
pp
le rejection
VI18 5 V to 28 5 V f 120 Hz
25°C
33
39
34
39
dB
Ripple
rejection
V
I = –
18
.
5
V
to
–
28
.
5
V
,
f
=
120
H
z
25°C
33
39
34
39
dB
Out
p
ut regulation
IO = 1 mA to 100 mA
25°C
150 150
mV
O
u
tp
u
t
reg
u
lation
IO = 1 mA to 40 mA
25°C
75 75
mV
Output noise voltage f = 10 Hz to 100 kHz 25°C 90 90 µV
Dropout voltage IO = 40 mA 25°C 1.7 1.7 V
Bias current
25°C 6.5 6.5
mA
Bias
c
u
rrent
125°C 6 6
mA
Bias current change
VI = –20 V to –30 V
0°C to 125°C
1.5 1.5
mA
Bias
c
u
rrent
change
IO = 1 mA to 40 mA
0°C
to
125°C
0.2 0.1
mA
†All characteristics are measured with a 0.33-µF capacitor across the input and a 0.1-µF capacitor across the output. Pulse-testing techniques are
used to maintain the junction temperature as close to the ambient temperature as possible. Thermal effects must be taken into account separately .
‡This specification applies only for dc power dissipation permitted by absolute maximum ratings.
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TI’s standard warranty . T esting and other quality control techniques are utilized to the extent TI deems necessary
to support this warranty. Specific testing of all parameters of each device is not necessarily performed, except
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Mailing Address:
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Post Office Box 655303
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Copyright 2001, Texas Instruments Incorporated
