Datasheet

TPS54317
SLVS619B –NOVEMBER 2005–REVISED SEPTEMBER 2009 ..................................................................................................................................... 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
T
J
OUTPUT VOLTAGE PACKAGE PART NUMBER
–40°C to 125°C Adjustable Down to 0.9 V QFN (RHF)
(1) (2)
TPS54317RHF
(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) The RHF package is available in two different tape and reel quantities. Add an R suffix to the device type (i.e. TPS54317RHFR) for a
3000 piece reel and add a T suffix (TPS54317RHFT) for a 250 piece reel.
ABSOLUTE MAXIMUM RATINGS
over operating free-air temperature range (unless otherwise noted)
(1)
VALUE 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 (steady state) –0.6 to 10 V
PH (transient < 20 ns) –2 to 10 V
PH Internally Limited
I
O
Output current 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 Power Dissipation Rating Table
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Operating virtual junction temperature range –40 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.
RECOMMENDED OPERATING CONDITIONS
MIN NOM MAX UNIT
V
I
Input voltage range 3 6 V
T
J
Operating junction temperature –40 125 °C
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