Datasheet
Simplified Schematic
80
82
84
86
88
90
92
94
96
0 0.5 1 1.5 2 2.5 3
Load Current − A
Efficiency − %
T
A
= 25°C
V
I
= 5 V
V
O
= 3.3 V
EFFICIENCY
vs
LOAD CURRENT
VIN PH
BOOT
PGND
VSENSE
Output
COMPAGND
VBIAS
Input
TPS54310
ABSOLUTE MAXIMUM RATINGS
TPS54310-EP
SLVS818 – APRIL 2008 .....................................................................................................................................................................................................
www.ti.com
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.
ORDERING INFORMATION
(1)
PACKAGED DEVICES TOPSIDE MARKING
T
J
OUTPUT VOLTAGE
PLASTIC HTSSOP (PWP)
(2) (3)
– 55 ° C to 125 ° C Adjustable Down to 0.9 V TPS54310MPWPREP 54310EP
(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
website at www.ti.com .
(2) Package drawings, thermal data, and symbolization are available at www.ti.com/packaging .
(3) The PWP package is shipped taped and reeled with 2000 units per reel. See the application section of this data sheet for PowerPAD
drawing and layout information.
over operating free-air temperature range (unless otherwise noted)
(1)
TPS54310 UNIT
VIN, SS/ENA, SYNC – 0.3 to 7 V
RT – 0.3 to 6 V
V
I
Input voltage range
VSENSE – 0.3 to 4 V
BOOT – 0.3 to 17 V
VBIAS, PWRGD, COMP – 0.3 to 7 V
V
O
Output voltage range
PH – 0.6 to 10 V
PH Internally Limited
I
O
Output voltage range
COMP, VBIAS 6 mA
PH 6 A
Sink current COMP 6 mA
SS/ENA, PWRGD 10 mA
Voltage differential AGND to PGND ± 0.3 V
Continuous power dissipation See Package Dissipation Rating
T
J
Operating virtual-junction temperature range – 55 to 150 ° C
T
stg
Storage temperature – 65 to 150 ° C
(1) Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions beyond those indicated under recommended operating
conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
2 Submit Documentation Feedback Copyright © 2008, Texas Instruments Incorporated
Product Folder Link(s): TPS54310-EP