Datasheet

SW
VBST
EN
VO
VFB
GND
PGND
VO
4
6
9
10
11
1
2
7
12
VIN1
SS
VIN
5VREG
EN
Logic
SW
PGND
UV
OV
Protection
Logic
Ref
SS
UV
OV
UVLO
UVLO
Softstart
SS
REF
TSD
Ref
VREG5
5
PG
1uF
13
8
VCC
Ceramic
Capacitor
3
SGND
SGND
PGND
VIN2
+20%
-10%
Ref
VREG5
VREG5
Control logic
1 shot
XCON
OCP
-35%
14
TPS54425
SLVSA84C –AUGUST 2010– REVISED JULY 2011 www.ti.com
FUNCTIONAL BLOCK DIAGRAM
6 Copyright © 2010–2011, Texas Instruments Incorporated