MC33063A_07 Datasheet, PDF (1/16 Pages) Texas Instruments – 1.5-A PEAK BOOST/BUCK/INVERTING SWITCHING REGULATORS

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MC33063A, MC34063A
1.5-A PEAK BOOST/BUCK/INVERTING SWITCHING REGULATORS
SLLS636J – DECEMBER 2004 – REVISED OCTOBER 2005
FEATURES
• 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
• Precision Internal Reference…2%
• Short-Circuit Current Limiting
• Low Standby Current
D (SOIC) OR P (PDIP) PACKAGE
(TOP VIEW)
Switch Collector 1
Switch Emitter 2
Timing Capacitor 3
GND 4
8 Driver Collector
7 I_pk
6 V_CC
5 Comparator Inverting Input
DRJ (QFN) PACKAGE
(TOP VIEW)
Switch Collector 1
†
8 Driver Collector
Switch Emitter 2
Timing Capacitor 3
GND ⁴
7 I_pk
6 V_CC
5 _{Comparator Inverting Input}
† _{Exposed thermal pad is connected internally to GND via die attach.}
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.
T_A
–40°C to 85°C
0°C to 70°C
PDIP – P
QFN – DRJ
SOIC – D
PDIP – P
QFN – DRJ
SOIC – D
ORDERING INFORMATION
PACKAGE ⁽¹⁾
ORDERABLE PART NUMBER
Tube of 50
MC33063AP
Reel of 1000
MC33063ADRJR
Tube of 75
MC33063AD
Reel of 2500
MC33063ADR
Tube of 50
MC34063AP
Reel of 1000
MC34063ADRJR
Tube of 75
MC34063AD
Reel of 2500
MC34063ADR
TOP-SIDE MARKING
MC33063AP
PREVIEW
M33063A
MC34063AP
PREVIEW
M34063A
(1) 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 the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2004–2005, Texas Instruments Incorporated