Datasheet

SW
VBST
EN
VO
VFB
GND
PGND
VO
4
6
9
10
11
1
2
7
12
VIN1
SS
VIN
5VREG
EN
Logic
UV
OV
Protection
Logic
Ref
SS
UV
OV
UVLO
UVLO
Softstart
SS
REF
TSD
Ref
VREG5
5
PG
1 Fm
13
8
VCC
Ceramic
Capacitor
3
SGND
SGND
PGND
VIN2
+20%
-10%
Ref
VREG5
VREG5
Control logic
1 shot
XCON
-35%
OCP
SW
PGND
ZC
SW
PGND
14
TPS54426
SLVSAD6C – AUGUST 2010–REVISED JULY 2011 www.ti.com
FUNCTIONAL BLOCK DIAGRAM
A. The block diagram shown is for the PWP 14 pin package. The QFN 16 pin package block diagram is identical except
for the pin out.
6 Copyright © 2010–2011, Texas Instruments Incorporated
Product Folder Link(s) :TPS54426