Package Pin Description
PIN SYMBOL
PACKAGE PIN #
8 Lead PDIP
FUNCTION
1
2
3
VFB
The VFB pin is the inverting input to the on-chip operational
amplifier.
Filter
The Filter pin is the non-inverting input to the on-chip opera-
tional amplifier.
Signal Common
The Signal Common pin connects to +VS/2, to a 20k½ resistor
tied to VFB and to a 10k½ resistor tied to Filter.
4
5
Gnd
The Gnd pin is the power return terminal
SCR Trigger
The SCR Trigger pin drives the silicon controlled rectifier dur-
ing fault conditions. An internal 4.7k½ resistor between this pin
and Gnd holds the SCR off in non-fault conditions.
6
7
+VS
The +VS pin is the power input to the IC.
AmpOUT
The AmpOUT pin is the output of the on-chip operational ampli-
fier.
8
Detect
The Detect pin is the fault detector input.
3
CHERRY [ CHERRY SEMICONDUCTOR CORPORATION ]
