MC33063A-Q1_15 Datasheet, PDF (1/26 Pages) Texas Instruments – MC33063A-Q1 1.5-A Peak Boost, Buck, Inverting Switching Regulator

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MC33063A-Q1
SLLS654C – APRIL 2005 – REVISED DECEMBER 2014
MC33063A-Q1 1.5-A Peak Boost, Buck, Inverting Switching Regulator
1 Features
•1 AEC-Q100 Qualified With the Following Results:
– Device HBM ESD Classification Level 2
– Device CDM ESD Classification Level C4B
• 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
2 Applications
Automotive: Buck, Boost, and Inverting
Topologies
3 Description
The MC33063A-Q1 device is an easy-to-use IC
containing all the primary circuitry needed for building
simple DC-DC converters. The device primarily
consists 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 device requires
minimal external components to build converters in
the boost, buck, and inverting topologies.
The MC33063A-Q1 device is characterized for
operation from –40°C to 125°C.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
MC33063A-Q1
SOIC (8)
4.90 mm × 3.91 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Simplified Schematic
Drive ⁸
Collector
I_pk ⁷
Sense
SQ
Q2
Q1
R
100 W
I_pk
Oscillator C_T
1 _Switch
Collector
2 Switch
Emitter
6
V_CC
+
−
Comparator ⁵
Inverting Input
1.25-V
Reference
Regulator
3 _Timing
Capacitor
4
GND
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.