Inverting Regulator - Buck, Boost, Switching
1.5 A
MC34063A, MC33063A, SC33063A, NCV33063A
The MC34063A Series is a mon...
Inverting
Regulator - Buck, Boost, Switching
1.5 A
MC34063A, MC33063A, SC33063A, NCV33063A
The MC34063A Series is a monolithic control circuit containing the primary functions required for DC−to−DC converters. These devices consist of an internal temperature compensated reference, comparator, controlled duty cycle oscillator with an active current limit circuit, driver and high current output switch. This series was specifically designed to be incorporated in Step−Down and Step−Up and Voltage−Inverting applications with a minimum number of external components. Refer to Application Notes AN920A/D and AN954/D for additional design information.
Features
Operation from 3.0 V to 40 V Input Low Standby Current Current Limiting Output Switch Current to 1.5 A Output Voltage Adjustable Frequency Operation to 100 kHz Precision 2% Reference NCV Prefix for Automotive and Other Applications Requiring
Unique Site and Control Change Requirements; AEC−Q100 Qualified and PPAP Capable
These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS
Compliant
Drive 8 Collector
S Q Q2
1 Switch Collector
Ipk 7 Sense
R 100
Ipk Oscillator
CT
Q1
2 Switch Emitter
6 VCC
Comparator 5 Inverting Input
Comparator + -
1.25 V Reference
Regulator
(Bottom View)
3 Timing Capacitor
4 GND
This device contains 79 active
transistors.
Figure 1. Representative Schematic Diagram
DATA SHEET www.onsemi.com
8 1
SOIC−8 D SUFFIX CASE 751
MARKING DIAGRAMS
8
3x063 ALYWA
G 1
8
3x063V ALYWA
...