MC33063A, MC34063A
1.5 A PEAK BOOST/BUCK/INVERTING SWITCHING REGULATORS
SLLS636D – DECEMBER 2004 – REVISED MARCH 2005
D
D
D
D
Wide Input Voltage Range . . . 3 V to 40 V
High Output Switch Current . . . Up to 1.5 A
Adjustable Output Voltage
Oscillator Frequency . . . Up to 100 kHz
D
Precision Internal Reference . . . 2%
D
Short-Circuit Current Limiting
D
Low Standby Current
D (SOIC) OR P (PDIP) PACKAGE
(TOP VIEW)
Switch Collector
Switch Emitter
Timing Capacitor
GND
1
2
3
4
8
7
6
5
Driver Collector
I
pk
V
CC
Comparator Inverting Input
DRJ (QFN) PACKAGE
(TOP VIEW)
Switch Collector
Switch Emitter
Timing Capacitor
GND
1
2
3
4
8
7
Driver Collector
I
pk
V
CC
Comparator Inverting Input
V
OUT
6
5
description/ordering information
The MC33063A and MC34063A are easy-to-use ICs containing all the primary circuitry needed for building
simple dc-dc converters. These devices primarily consist of an internal temperature-compensated reference,
a comparator, 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
inverting topologies.
The MC33063A is characterized for operation from −40°C to 85°C, while the MC34063A is characterized for
operation from 0°C to 70°C.
ORDERING INFORMATION
TA
PDIP (P)
QFN (DRJ)
−40°C to 85°C
SOIC (D)
PDIP (P)
QFN (DRJ)
0°C to 70°C
SOIC (D)
PACKAGE†
Tube of 50
Reel of 1000
Tube of 75
Reel of 2500
Tube of 50
Reel of 1000
Tube of 75
Reel of 2500
ORDERABLE
PART NUMBER
MC33063AP
MC33063ADRJR
MC33063AD
MC33063ADR
MC34063AP
MC34063ADRJR
MC34063AD
MC34063ADR
M34063A
M33063A
MC34063AP
PREVIEW
TOP-SIDE
MARKING
MC33063AP
PREVIEW
† Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are
available at www.ti.com/sc/package.
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.
Copyright
2005, Texas Instruments Incorporated
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
1
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