Datasheet

PH
PGND
OUT
VSENSE
PLL
REG
REF
Shutdown
Logic
Thermal
SD
UVLO
-
+
VIN
RT/CLK
SS
NR
EN
GND
+
-
PWRGD
Logic
UV
OV
Boot
Charge
Current
Sense
+
-
+
FB
REF
Shutdown
Logic
Thermal
SD
UVLO
LDOEN
LDOIN
Current
Limit
PWRGD
EN Threshold
BOOT
COMP
Thermal Pad
33 kΩ
225 kΩ
Thermal
SD
I
p
PVIN
Power Stage
Dead Time
and
Slew RateControl
Logic
Current
Sense
I
h
TPS54120
SBVS180C –JANUARY 2012–REVISED JUNE 2012 www.ti.com
FUNCTIONAL BLOCK DIAGRAM
6 Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated