TPS53317
www.ti.com
SLUSAK4 –JUNE 2011
3.3-V/5-V Input, 6-A, D-CAP+™ Mode Synchronous Step-Down Integrated FETs Converter
Check for Samples: TPS53317
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FEATURES
APPLICATIONS
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TI proprietary Integrated MOSFET and
Packaging Technology
External Tracking
Minimum External Components Count
1-V to 6-V Conversion Voltage
D-CAP+™ Mode Architecture
Supports All MLCC Output Capacitors and
SP/POSCAP
Selectable SKIP and Forced CCM
Optimized Efficiency at Light and Heavy Loads
Selectable 600-kHz and 1-MHz Switching
Frequency
Selectable Overcurrent Limit (OCL)
Overvoltage Protection and Hiccup
Undervoltage Protection
Thermal Shutdown
Adjustable Output Voltage Ranging Between
0.6 V and 2 V
Small 3.5 mm × 4 mm, 20-Pin QFN Package
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VTT Terminators
Low-Voltage Applications for 1-V to 6-V
Step-Down Rails
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DESCRIPTION
The TPS53317 is a fully-integrated,synchronous buck
regulator employing D-CAP+™ technology. It is used
for rail step-downs from 1 V to 6 V where space is a
consideration, and an optimized component count is
required.
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The TPS53317 features two switching frequency
settings (600 kHz and 1 MHz), synchronous operation
in skip (low ripple) mode, integrated droop support,
external tracking support, pre-bias startup, output soft
discharge, integrated bootstrap switch, power good
function, EN/Input UVLO protection, and both output
ceramic and SP/POS/AL capacitor support. It
supports supply and conversion voltages up to 6.0 V,
and output voltages adjustable from 0.6 V to 2.0 V. It
also provides external tracking support.
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The TPS53317 is available in the 3.5 mm by 4 mm,
20-pin QFN package (Green RoHs compliant and Pb
free) with TI proprietary Integrated MOSFET and
packaging technology and is specified from -40°C to
85°C.
TPS53317
VIN
VIN
BST 16
SW
17 EN
VOUT
8
7
COMP PGOOD 19
PGOOD
VREF
PGND
VOUT 10
MODE 18
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REFIN
PGNDGND
GND GND
5VIN
20 V5IN
GND
6
UDG-11105
PGND
GND
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Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
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D-CAP+ is a trademark of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2011, Texas Instruments Incorporated