Datasheet

OSC
EN3
12V DC Supply
from enable logic
INTERNAL
VOLTAGE RAILS
V3V
V7V
Vout BUCK1
LX1
LX1
FB1
COMP1
BST1
BUCK1
Vout BUCK2
LX2
LX2
FB2
COMP2
BST2
BUCK2
Vout BUCK3
LX3
LX3
FB3
COMP3
BST3
BUCK3
EN2
from enable logic
EN1
from enable logic
SS2
SS1
SS3
VIN1
VIN2
VIN3
Rlim1
ROSC
AGND
PG
Generator
PGOOD
SYNC
Rlim2
Rlim3
PFM mode
LOW_P
VIN
GND
TPS65251
www.ti.com SLVSAA4D –JUNE 2010–REVISED DECEMBER 2012
This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.
ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more
susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.
FUNCTIONAL BLOCK DIAGRAM
ORDERING INFORMATION
(1)
T
A
PACKAGE
(2)
ORDERABLE PART NUMBER TOP-SIDE MARKING
Reel of 2500 TPS65251RHAR
–40°C to 125°C 40-pin (QFN) - RHA TPS65251
Reel of 250 TPS65251RHAT
(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
web site at www.ti.com.
(2) Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.
Copyright © 2010–2012, Texas Instruments Incorporated Submit Documentation Feedback 3
Product Folder Links: TPS65251