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FEATURES
1
2
3
4
8
7
6
5
Switch Collector
Switch Emitter
Timing Capacitor
GND
Driver Collector
Ipk
VCC
Comparator Inverting Input
D (SOIC) OR P (PDIP) PACKAGE
(TOP VIEW)
DRJ (QFN) PACKAGE
(TOP VIEW)
Comparator Inverting Input
Switch Collector
2
3
4
18
7
6
5
Switch Emitter
Timing Capacitor
GND
VCC
Ipk
Driver Collector
†Exposed thermal pad is connected internally to GND via die attach.
†
DESCRIPTION/ORDERING INFORMATION
MC33063A, MC34063A1.5-A PEAK BOOST/BUCK/INVERTING SWITCHING REGULATORS
SLLS636I – DECEMBER 2004 – REVISED SEPTEMBER 2005
•Oscillator Frequency …Up to 100 kHz•Wide Input Voltage Range …3 V to 40 V •Precision Internal Reference …2%•High Output Switch Current …Up to 1.5 A •Short-Circuit Current Limiting•Adjustable Output Voltage •Low Standby Current
The MC33063A and MC34063A are easy-to-use ICs containing all the primary circuitry needed for buildingsimple dc-dc converters. These devices primarily consist of an internal temperature-compensated reference, acomparator, an oscillator, a PWM controller with active current limiting, a driver, and a high-current output switch.Thus, the devices require minimal external components to build converters in the boost, buck, and invertingtopologies.
The MC33063A is characterized for operation from –40 °C to 85 °C, while the MC34063A is characterized foroperation from 0 °C to 70 °C.
ORDERING INFORMATION
T
A
PACKAGE
(1)
ORDERABLE PART NUMBER TOP-SIDE MARKING
PDIP – P Tube of 50 MC33063AP MC33063APQFN – DRJ Reel of 1000 MC33063ADRJR PREVIEW–40 °C to 85 °C
Tube of 75 MC33063ADSOIC – D M33063AReel of 2500 MC33063ADRPDIP – P Tube of 50 MC34063AP MC34063APQFN – DRJ Reel of 1000 MC34063ADRJR PREVIEW0°C to 70 °C
Tube of 75 MC34063ADSOIC – D M34063AReel of 2500 MC34063ADR
(1) Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available atwww.ti.com/sc/package.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of TexasInstruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Copyright © 2004–2005, Texas Instruments IncorporatedProducts conform to specifications per the terms of the TexasInstruments standard warranty. Production processing does notnecessarily include testing of all parameters.
www.ti.com
−
+
QS
1.25-V
Reference
Regulator
R
CT
Ipk
Oscillator
Q2
Q1
Switch
Collector
4
Switch
Emitter
Timing
Capacitor
GND
3
2
18
7
6
5
Comparator
Inverting Input
VCC
Ipk
Sense
Drive
Collector
100 Ω
Absolute Maximum Ratings
(1)
MC33063A, MC34063A1.5-A PEAK BOOST/BUCK/INVERTING SWITCHING REGULATORS
SLLS636I – DECEMBER 2004 – REVISED SEPTEMBER 2005
FUNCTIONAL BLOCK DIAGRAM
over operating free-air temperature range (unless otherwise noted)
MIN MAX UNIT
V
CC
Supply voltage 40 VV
IR
Comparator Inverting Input voltage range –0.3 40 VV
C(switch)
Switch Collector voltage 40 VV
E(switch)
Switch Emitter voltage V
PIN1
= 40 V 40 VV
CE(switch)
Switch Collector to Switch Emitter voltage 40 VV
C(driver)
Driver Collector voltage 40 VI
C(driver)
Driver Collector current 100 mAI
SW
Switch current 1.5 AD package 97θ
JA
Package thermal impedance
(2) (3)
DRJ package TBD °C/WP package 85T
J
Operating virtual junction temperature 150 °CT
stg
Storage temperature range –65 150 °C
(1) Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratingsonly, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operatingconditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.(2) Maximum power dissipation is a function of T
J
(max), θ
JA
, and T
A
. The maximum allowable power dissipation at any allowable ambienttemperature is P
D
= (T
J
(max) – T
A
)/ θ
JA
. Operating at the absolute maximum T
J
of 150 °C can affect reliability.(3) The package thermal impedance is calculated in accordance with JESD 51-7.
2
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Recommended Operating Conditions
Electrical Characteristics
Oscillator
Output Switch
(1)
Comparator
Total Device
MC33063A, MC34063A1.5-A PEAK BOOST/BUCK/INVERTING SWITCHING REGULATORS
SLLS636I – DECEMBER 2004 – REVISED SEPTEMBER 2005
MIN MAX UNIT
V
CC
Supply voltage 3 40 VMC33063A –40 85T
A
Operating free-air temperature °CMC34063A 0 70
V
CC
= 5 V, T
A
= full operating range (unless otherwise noted) (see block diagram)
PARAMETER TEST CONDITIONS T
A
MIN TYP MAX UNIT
f
osc
Oscillator frequency V
PIN5
= 0 V, C
T
= 1 nF 25 °C 24 33 42 kHzI
chg
Charge current V
CC
= 5 V to 40 V 25 °C 24 35 42 µAI
dischg
Discharge current V
CC
= 5 V to 40 V 25 °C 140 220 260 µAI
dischg
/I
chg
Discharge-to-charge current ratio V
PIN7
= V
CC
25 °C 5.2 6.5 7.5V
Ipk
Current-limit sense voltage I
dischg
= I
chg
25 °C 250 300 350 mV
PARAMETER TEST CONDITIONS T
A
MIN TYP MAX UNIT
Saturation voltage –V
CE(sat)
I
SW
= 1 A, pins 1 and 8 connected Full range 1 1.3 VDarlington connectionSaturation voltage – I
SW
= 1 A, R
PIN8
= 82 Ωto V
CC
,V
CE(sat)
Full range 0.45 0.7 Vnon-Darlington connection
(2)
forced β∼20h
FE
DC current gain I
SW
= 1 A, V
CE
= 5 V 25 °C 50 75I
C(off)
Collector off-state current V
CE
= 40 V Full range 0.01 100 µA
(1) Low duty-cycle pulse testing is used to maintain junction temperature as close to ambient temperature as possible.(2) In the non-Darlington configuration, if the output switch is driven into hard saturation at low switch currents ( ≤300 mA) and high drivercurrents ( ≥30 mA), it may take up to 2 µs for the switch to come out of saturation. This condition effectively shortens the off time atfrequencies ≥30 kHz, becoming magnified as temperature increases. The following output drive condition is recommended in thenon-Darlington configuration:Forced βof output switch = I
C,SW
/ (I
C,driver
– 7 mA) ≥10,where ∼7 mA is required by the 100- Ωresistor in the emitter of the driver to forward bias the V
be
of the switch.
PARAMETER TEST CONDITIONS T
A
MIN TYP MAX UNIT
25 °C 1.225 1.25 1.275V
th
Threshold voltage VFull range 1.21 1.29∆V
th
Threshold-voltage line regulation V
CC
= 5 V to 40 V Full range 1.4 5 mVI
IB
Input bias current V
IN
= 0 V Full range –20 –400 nA
PARAMETER TEST CONDITIONS T
A
MIN MAX UNIT
V
CC
= 5 V to 40 V, C
T
= 1 nF,I
CC
Supply current V
PIN7
= V
CC
, V
PIN5
> V
th
, Full range 4 mAV
PIN2
= GND, All other pins open
3
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TYPICAL CHARACTERISTICS
1.0
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6
IE, Emitter Current (A)
VCE(SAT), Output Switch
Saturation Voltage (V)
VCC = 5 V
Pin 1, 7, 8 = VCC
Pin 3, 5 = GND
TA = 25°C
110
0.01 0.1 101
CT, Oscillator Timing Capacitor (nF)
tON-OFF, Output Switch
On-Off Time (µs)
1000
100
10
1
VCC = 5 V
Pin 7 = VCC
Pin 5 = GND
TA = 25°CtON
tOFF
200
220
240
260
280
300
320
340
360
380
−50 −25 0 25 50 75 100 125
TA, Ambient Temperature (°C)
VIPK, Current Limit
Sense Voltage (mV)
VCC = 5 V
ICHG = IDISCHG
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6
IC, Collector Current (A)
VCE(SAT), Output Switch
Saturation Voltage (V)
Darlington Connection
VCC = 5 V
Pin 7 = VCC
Pin 2, 3, 5 = GND
TA = 25°C
Force Beta = 20
00 1
0.0
0.4
0.8
1.2
1.6
2.0
2.4
2.8
3.2
3.6
0 5 10 15 20 25 30 35 40
VCC, Supply V oltage (V)
ICC, Supply Current (mA)
CT = 1 nF
Pin 7 = VCC
Pin 2 = GND
TA = 25°C
MC33063A, MC34063A1.5-A PEAK BOOST/BUCK/INVERTING SWITCHING REGULATORS
SLLS636I – DECEMBER 2004 – REVISED SEPTEMBER 2005
Figure 1. Output Switch On-Off Time vs Figure 2. Output Switch Saturation Voltage vsOscillator Timing Capacitor Emitter Current (Emitter-Follower Configuration)
Figure 3. Output Switch Saturation Voltage vs Figure 4. Current-Limit Sense Voltage vs TemperatureCollector Current (Common-Emitter Configuration)
Figure 5. Standby Supply Current vs Supply Voltage
4
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QS
R
CT
Ipk
Q2
Q1
2
1
CT
Comparator
_
+1.25-V
Reference
Regulator
4
5
3
8
180 Ω
7
6
RSC
0.22 Ω
47 kΩ
R2
L
170 µH
CO
1N5819
330 µF
1500 pF
R1
2.2 kΩ
100 µF
+
+
VCC
Vout
28 V/175 mA
1.0 µH
100 µF+
Optional Filter
Vin
12 V
Vout 1.25 (1 R2
R1)
MC33063A, MC34063A1.5-A PEAK BOOST/BUCK/INVERTING SWITCHING REGULATORS
SLLS636I – DECEMBER 2004 – REVISED SEPTEMBER 2005
TYPICAL CHARACTERISTICS (continued)
Figure 6. Step-Up Converter
TEST CONDITIONS RESULTS
Line regulation V
IN
= 8 V to 16 V, I
O
= 175 mA 30 mV ±0.05%Load regulation V
IN
= 12 V, I
O
= 75 mA to 175 mA 10 mV ±0.017%Output ripple V
IN
= 12 V, I
O
= 175 mA 400 mV
PP
Efficiency V
IN
= 12 V, I
O
= 175 mA 87.7%Output ripple with optional filter V
IN
= 12 V, I
O
= 175 mA 40 mV
PP
5
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8
7
6
1
2
R*
* R 0 for constant Vin
8
7
6
1
2
Vout
RSC
Vin
RSC
Vin
Vout
a) EXTERNAL npn SWITCH b) EXTERNAL pnp SATURATED SWITCH (see Note A)
MC33063A, MC34063A1.5-A PEAK BOOST/BUCK/INVERTING SWITCHING REGULATORS
SLLS636I – DECEMBER 2004 – REVISED SEPTEMBER 2005
A. If the output switch is driven into hard saturation (non-Darlington configuration) at low switch currents ( ≤300 mA) andhigh driver currents ( ≥30 mA), it may take up to 2 µs to come out of saturation. This condition will shorten the off timeat frequencies ≥30 kHz and is magnified at high temperatures. This condition does not occur with a Darlingtonconfiguration because the output switch cannot saturate. If a non-Darlington configuration is used, the output driveconfiguration in Figure 7b is recommended.
Figure 7. External Current-Boost Connections for I
C
Peak Greater Than 1.5 A
6
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QS
R
CT
Ipk
Q2
Q1
2
1
CT
Oscillator
_
+1.25-V
Reference
Regulator
4
5
3
8
7
6
RSC
0.33 Ω
3.8 kΩ
R2
L
220 µH
CO
1N5819
470 µF
470 pF
R1
1.2 kΩ
100 µF
+
+
VCC
Vout
5 V/500 mA
1.0 µH
100 µF+
Optional Filter
Vin
25 V
Comparator
Vout 1.25 (1 R2
R1)
8
7
6
1
2
8
7
6
1
2
RSC
Vin
RSC
Vin
Vout
Vout
a) EXTERNAL npn SWITCH b) EXTERNAL pnp SATURATED SWITCH
MC33063A, MC34063A1.5-A PEAK BOOST/BUCK/INVERTING SWITCHING REGULATORS
SLLS636I – DECEMBER 2004 – REVISED SEPTEMBER 2005
Figure 8. Step-Down Converter
TEST CONDITIONS RESULTS
Line regulation V
IN
= 15 V to 25 V, I
O
= 500 mA 12 mV ±0.12%Load regulation V
IN
= 25 V, I
O
= 50 mA to 500 mA 3 mV ±0.03%Output ripple V
IN
= 25 V, I
O
= 500 mA 120 mV
PP
Short-circuit current V
IN
= 25 V, R
L
= 0.1 Ω1.1 AEfficiency V
IN
= 25 V, I
O
= 500 mA 83.7%Output ripple with optional filter V
IN
= 25 V, I
O
= 500 mA 40 mV
PP
Figure 9. External Current-Boost Connections for I
C
Peak Greater Than 1.5 A
7
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QS
R
CT
Ipk
Q2
Q1
2
1
Oscillator
_
+1.25-V
Reference
Regulator
4
5
3
8
7
6
RSC
0.24 Ω
953 Ω
R1
CO
1N5819
1500 pF
R2
8.2 kΩ
100 µF
+
VCC
Vout
−12 V/100 mA
1.0 µH
100 µF
Optional Filter
Vin
4.5 V to 6.0 V
+
+
1000 µF
+
L
88 µH
Comparator
Vout 1.25 (1 R2
R1)
8
7
6
1
2
8
7
6
1
2
Vin
Vout
Vin
Vout
a) EXTERNAL npn SWITCH b) EXTERNAL pnp SATURATED SWITCH
MC33063A, MC34063A1.5-A PEAK BOOST/BUCK/INVERTING SWITCHING REGULATORS
SLLS636I – DECEMBER 2004 – REVISED SEPTEMBER 2005
Figure 10. Voltage-Inverting Converter
TEST CONDITIONS RESULTS
Line regulation V
IN
= 4.5 V to 6 V, I
O
= 100 mA 3 mV ±0.12%Load regulation V
IN
= 5 V, I
O
= 10 mA to 100 mA 0.022 V ±0.09%Output ripple V
IN
= 5 V, I
O
= 100 mA 500 mV
PP
Short-circuit current V
IN
= 5 V, R
L
= 0.1 Ω910 mAEfficiency V
IN
= 5 V, I
O
= 100 mA 62.2%Output ripple with optional filter V
IN
= 5 V, I
O
= 100 mA 70 mV
PP
Figure 11. External Current-Boost Connections for I
C
Peak Greater Than 1.5 A
8
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APPLICATION INFORMATION
Vout VF
Vin(min)Vsat Vout
VoutVF
Vin Vsat
Vout VFVin(min)
Vin(min)Vsat
1
f
1
f
1
f
ton toff
ton
toff 1
ton toff
ton
toff 1
ton toff
ton
toff 1
ton tofftoff
ton tofftoff
ton tofftoff
4105ton
4105ton
4105ton
2Iout(max)
2Iout(max)ton
toff 1
2Iout(max)ton
toff 1
0.3
Ipk(switch)
0.3
Ipk(switch)
0.3
Ipk(switch)
Vin(min)Vsat
Ipk(switch)ton(max)
Vin(min)Vsat Vout
Ipk(switch)ton(max)
Vin(min)Vsat
Ipk(switch)ton(max)
9Ioutton
Vripple(pp)
9Ioutton
Vripple(pp)
Ipk(switch)ton toff
8Vripple(pp)
1.25(1R2
R1)
1.25(1R2
R1)
1.25(1R2
R1)
MC33063A, MC34063A1.5-A PEAK BOOST/BUCK/INVERTING SWITCHING REGULATORS
SLLS636I – DECEMBER 2004 – REVISED SEPTEMBER 2005
CALCULATION STEP UP STEP DOWN VOLTAGE INVERTING
t
on
/t
off
(t
on
+ t
off
)
t
off
t
on
C
T
I
pk(switch)
R
SC
L
(min)
C
O
V
out
See Figure 6 See Figure 8 See Figure 10
9
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THERMAL PAD MECHANICAL DATA
MC33063A, MC34063A1.5-A PEAK BOOST/BUCK/INVERTING SWITCHING REGULATORS
SLLS636I – DECEMBER 2004 – REVISED SEPTEMBER 2005
DRJ (S-PDSO-N8)
10
PACKAGING INFORMATION
Orderable Device Status (1) Package
Type Package
Drawing Pins Package
Qty Eco Plan (2) Lead/Ball Finish MSL Peak Temp (3)
MC33063AD ACTIVE SOIC D 8 75 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
MC33063ADE4 ACTIVE SOIC D 8 75 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
MC33063ADR ACTIVE SOIC D 8 2500 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
MC33063ADRE4 ACTIVE SOIC D 8 2500 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
MC33063AP ACTIVE PDIP P 8 50 Pb-Free
(RoHS) CU NIPDAU Level-NC-NC-NC
MC33063APE4 ACTIVE PDIP P 8 50 Pb-Free
(RoHS) CU NIPDAU Level-NC-NC-NC
MC34063AD ACTIVE SOIC D 8 75 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
MC34063ADE4 ACTIVE SOIC D 8 75 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
MC34063ADR ACTIVE SOIC D 8 2500 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
MC34063ADRE4 ACTIVE SOIC D 8 2500 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
MC34063AP ACTIVE PDIP P 8 50 Pb-Free
(RoHS) CU NIPDAU Level-NC-NC-NC
MC34063APE4 ACTIVE PDIP P 8 50 Pb-Free
(RoHS) CU NIPDAU Level-NC-NC-NC
(1) The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in
a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS) or Green (RoHS & no Sb/Br) - please check
http://www.ti.com/productcontent for the latest availability information and additional product content details.
TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements
for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered
at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame
retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material)
(3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder
temperature.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is
provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the
accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take
reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on
incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited
information may not be available for release.
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI
to Customer on an annual basis.
PACKAGE OPTION ADDENDUM
www.ti.com 28-Sep-2005
Addendum-Page 1
MECHANICAL DATA
MPDI001A – JANUARY 1995 – REVISED JUNE 1999
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
P (R-PDIP-T8) PLASTIC DUAL-IN-LINE
8
4
0.015 (0,38)
Gage Plane
0.325 (8,26)
0.300 (7,62)
0.010 (0,25) NOM
MAX
0.430 (10,92)
4040082/D 05/98
0.200 (5,08) MAX
0.125 (3,18) MIN
5
0.355 (9,02)
0.020 (0,51) MIN
0.070 (1,78) MAX
0.240 (6,10)
0.260 (6,60)
0.400 (10,60)
1
0.015 (0,38)
0.021 (0,53)
Seating Plane
M
0.010 (0,25)
0.100 (2,54)
NOTES: A. All linear dimensions are in inches (millimeters).
B. This drawing is subject to change without notice.
C. Falls within JEDEC MS-001
For the latest package information, go to http://www.ti.com/sc/docs/package/pkg_info.htm
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