TPS53114PWR Datasheet, PDF (1/27 Pages) Texas Instruments – SINGLE SYNCHRONOUS STEP-DOWN CONTROLLER

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TPS53114
SLVS887B – APRIL 2009 – REVISED OCTOBER 2010
SINGLE SYNCHRONOUS STEP-DOWN CONTROLLER
FOR LOW VOLTAGE POWER RAILS
Check for Samples: TPS53114
FEATURES
1
•2 D-CAP2™ Mode Control
– Fast Transient Response
– No External Parts Required For Loop
Compensation
– Compatible with Ceramic Output
Capacitors
• High Initial Reference Accuracy (±1%)
• Low Output Ripple
• Wide Input Voltage Range: 4.5 V to 24 V
• Output Voltage Range: 0.76 V to 5.5 V
• Low-Side R_DS(on) Loss-Less Current Sensing
• Adaptive Gate Drivers with Integrated Boost
Diode
• Adjustable Soft Start
• Pre-Biased Soft Start
• Selectable Switching Frequency
350 kHz / 700 kHz
• Cycle-By-Cycle Over Current Limiting Control
• Thermally Compensated OCP by 4000 ppm/°C
at I_TRIP
APPLICATIONS
• Point-of-Load Regulation in Low Power
Systems for Wide Range of Applications
– Digital TV Power Supply
– Networking Home Terminal
– Digital Set Top Box (STB)
– DVD Player / Recorder
– Gaming Consoles
DESCRIPTION
The TPS53114 is a single, adaptive on-time D-CAP2™ mode synchronous buck controller. The TPS53114
enables system designers to complete the suite of various end equipment's power bus regulators with cost
effective low external component count and low standby current solution. The main control loop for the
TPS53114 uses the D-CAP2™ mode control which provides a very fast transient response with no external
components. The TPS53114 also has a circuit that enables the device to adapt to both low equivalent series
resistance (ESR) output capacitors such as POSCAP or SP-CAP and ultra-low ESR ceramic capacitors. The
device provides convenient and efficient operation with input voltages from 4.5 V to 24 V and output voltage from
0.76 V to 5.5 V.
The TPS53114 is available in the 16-pin TSSOP and HTSSOP packages, and is specified from –40°C to 85°C
ambient temperature range.
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.
D-CAP2 is a trademark of Texas Instruments.
2
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 © 2009–2010, Texas Instruments Incorporated