FSP34063 Datasheet, PDF (1/10 Pages) FOSLINK SEMICONDUCTOR CO.,LTD – UNIVERSAL DC/DC CONVERTER

„ FEATURES
z Operation from 3.0V to 40V Input
z Low Standby Current
z Current Limiting
z Output Switch Current to 1.6A
z Output Voltage Adjustable
z Frequency Operation to 100kHz
z Precision 2% Reference
z SOP8L and PDIP8L Packages
„ PIN CONFIGURATION
UNIVERSAL DC/DC CONVERTER
FSP34063
„ GENERAL DESCRIPTION
The FSP34063 Series is a monolithic control circuit
containing the primary functions required for DC-to-DC
converters. These devices consists 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 is specifically designed for incorporating in
Step-Down and Step-Up and Voltage-Inverting
applications with a minimum number of external
components.
(Top View)
Switch Collector 1
Switch Emitter 2
Timing Capacitor 3
Gnd 4
8 _Driver
7 I_PK sensor
6 V_CC
5 _{Comparator inverting input}
„ REPRESENTATIVE SCHEMATIC DIAGRAM
Driver
Collector
8
Ipk Sensor 7
Vcc 6
Comparator
Inverting 5
Input
SQ
Q2
Q1
R
100
Ipk
CT
Oscillator
Comparator
+
-
1.25V
Ref erence
Regulator
1
Sw itch
Collector
2
Sw itch
Emitter
3
Timing
Capacitor
4 Gnd
1/10
2007-1-25