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| GM34063_1 Datasheet, PDF (1/10 Pages) Gamma Microelectronics Inc. – 1.5A DC TO DC CONVERTER CONTROL | |||
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GM34063 series
1.5A DC TO DC
CONVERTER CONTROL
Description
GM34063 series have 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 high current output switch.
GM34063 series are designed for step-down, step-up
and voltage-inverting applications by using a
minimum number of external components.
For GM34063E can operate for a temperature range
from -40°C to 125°C while GM34063F can operate
from -25°C to 85°C.
Features
 3.0V to 40V Input
 Adjustable Output Voltage
 Output Switch Current to 1.5A
 Low Standby Current
 Operating Frequency to 100kHz
 Precision 1 % Reference available
Application
z CD-ROM
z Motherboards
z SMPS Power Supply
Schematic Diagram
z Battery Chargers
z DSL Modem
6
VCC
7
IPK Sense
5
Comparator
Inverting Input
S Q Q2
R
Q1
IPK Oscillator
CT
Comparator
+
-
100
1.25V
VREF
2
Switch Emitter
3
Timing Capacitor
4
GND
1
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