EN 73
3139 785 30981
8.
Circuit- and IC description
PIN
DESCRIPTION
TERMINAL
NO.
I/O
DESCRIPTION
NAME
D OR P
I/O
DESCRIPTION
TPS2041
TPS2051
EN
4
–
I
Enable input. Logic low turns on power switch.
EN
–
4
I
Enable input. Logic high turns on power switch.
GND
1
1
I
Ground
IN
2, 3
2, 3
I
Input voltage
OC
5
5
O
Over current. Logic output active low
OUT
6, 7, 8
6, 7, 8
O
Power-switch output
IC7521 - 2A Switch Step Down Switching Regulator
PIN DESCRIPTION AND CONFIGURATION
PIN CONNECTION
PIN DESCRIPTION
N°
Pin
Function
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.
OUT
GND
GND
COMP
1
3
2
4
VCC
GND
GND
FB
8
7
6
5
D02IN1367
