Philips DVDR3305/02 Service Manual page 69

PIN DESCRIPTION
TERMINAL
NO.
NAME
D OR P
TPS2041 TPS2051
EN 4
EN –
GND 1
IN 2, 3 2, 3
OC 5
OUT 6, 7, 8 6, 7, 8
IC7521 - L5972D - 2A Switch Step Down Switching Regulator
PIN DESCRIPTION AND CONFIGURATION
PIN CONNECTION
PIN DESCRIPTION
N° Pin
1 OUT Regulator Output.
2,3,6,7 GND Ground.
4 COMP E/A output for frequency compensation.
5 FB Feedback input. Connecting directly to this pin results in an output voltage of 1.23V. An external
resistive divider is required for higher output voltages.
8 VCC Unregulated DC input voltage.
Circuit- and IC description
I/O I/O
– I Enable input. Logic low turns on power switch.
4 I Enable input. Logic high turns on power switch.
1 I Ground
I Input voltage
5 O Over current. Logic output active low
O Power-switch output
OUT 1
GND 2
GND 3
COMP 4
D02IN1367
3139 785 3093x
DESCRIPTION DESCRIPTION
VCC
8
7 GND
6 GND
5 FB
Function
8. EN 69