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TPS53311RGTR Datasheet(PDF) 1 Page - Texas Instruments

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Part # TPS53311RGTR
Description  3-A Step-Down Regulator with Integrated Switcher
Download  24 Pages
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

TPS53311RGTR Datasheet(HTML) 1 Page - Texas Instruments

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TPS53311
13
VIN
14
VIN
6
7
5
SW SW SW
V
IN
2.9 V to 6 V
V
IN
V
DD
2.9 V to 3.5 V
Output All MLCCs
UDG-10027
4
3
10
9
PGD
C
BST
PGD
FB
COMP
12
11
2
VDD
AGND
SYNC
1
8
EN
PS
15
PGND
16
PGND
Pad
VBST
EN
SYNC
TPS53311
www.ti.com
SLUSA41 – JUNE 2010
3-A Step-Down Regulator with Integrated Switcher
Check for Samples: TPS53311
1
FEATURES
LOW VOLTAGE APPLICATIONS
5-V Step-down Rail
2
TI Proprietary Integrated MOSFET and
Packaging Technology
3.3-V Step-down Rail
Continuous 3-A Output Current
DESCRIPTION
Supports All MLCC Output Capacitor
TPS53311 is a fully integrated synchronous buck
Supports Skip Mode for Light Load Control
regulator using the TI's proprietary SmoothPMW™
Optimized Efficiency at Light and Heavy Loads
voltage mode control. It is designed for 3.3-V and 5-V
Voltage Mode Control
step-downs where system size is at a premium, and
where performance and optimized component lists
Supports Master-Slave Interleaved Operation
are mandatory.
Synchronization up to ±20% of Nominal
Frequency
The
TPS53311
features
a
1.1-MHz
switching
frequency, SKIP mode operation support, pre-bias
Conversion Voltage Range Between 2.9 V and
startup, internal softstart, output soft discharge,
6.0 V
internal VBST switch, power good, EN/input UVLO,
Soft-Stop Output Discharge During Disable
overcurrent,
overvoltage,
undervoltage
and
Adjustable Output Voltage Ranging Between
over-temperature protections and all ceramic output
capacitor support. It supports supply voltage from
0.6 V and 0.84 V × VIN
2.9 V to 3.5 V and conversion voltage from 2.9 V to
Overcurrent, Overvoltage and
6.0 V, and output voltage is adjustable from 0.6 V to
Over-Temperature Protection
0.84 V × VIN.
Small 3 × 3 , 16-Pin QFN Package
The TPS53311 is available in the 3 mm × 3 mm
Open-Drain Power Good Indication
16-pin QFN package (Green RoHs compliant and Pb
Internal Boot Strap Switch
free) with TI proprietary Integrated MOSFET and
packaging technology and operates between –40°C
Low RDS(on), 24 mΩ with 3.3-V Input and 19-mΩ
and 85°C.
with 5-V Input
TYPICAL APPLICATION CIRCUIT
1
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.
2
SmoothPMW is a trademark of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Copyright © 2010, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.


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