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MICROELECTRONICS
Power Management
A A
GM34063
1.5A DC-TO-DC CONVERTER CONTROL CIRCUIT
Description...
www.DataSheet4U.com
MICROELECTRONICS
Power Management
A A
GM34063
1.5A DC-TO-DC CONVERTER CONTROL CIRCUIT
Description
GM34063 has all the functions required for DC-to-DC converters: an internal temperature- compensated reference, comparator, controlled duty cycle oscillator with an active current limit circuit, driver, and highcurrent output switch. GM34063 is designed for step-down, step-up and voltage-inverting applications by using a minimum number of external components.
Features
3.0V to 40V input Adjustable Output Voltage Current Limiting Output Switch Current to 1.5A Low Standby Current Operating Frequency to 100kHz Precision 2% Reference
Application
CD-ROM Motherboards SMPS Power Supply Battery Chargers DSL Modem
SCHEMATIC DIAGRAM
8 Driver Collector S R 7 Ipk Sense Ipk Oscillator CT 6 VCC 100 Q Q2 Q1
1 Switch Collector
2 Switch Emitter 3
Comparator + 1.25V Reference
Regulator
Timing Capacitor
5 Comparator Inverting Input (Bottom View)
4 GND
www.gammamicro.com
GM34063
1
V0.1
Power Management
MICROELECTRONICS
A
A
GM34063
1.5A DC-to-DC CONVERTER CONTROL CIRCUIT
MARKING INFORMATION & PIN CONFIGURATIONS (TOP VIEW)
SOP-8
Ipk Sense Driver Collector VCC Comparator Inventing Input Ipk Sense Driver Collector
DIP - 8
VCC Comparator Inventing Input
8
7
6
5
8
7
6
5
GM34063 AYWW
1
Switch Collector Switch Emitter
GM34063 AYWW
2
3
4
GND Timing Capacitor Switch Collector Switch Emitter
1
2
3
4
GND Timing Capacitor
A : Assembly Location Y : Year ...