TPS53114
www.ti.com ..................................................................................................................................................................................................... SLVS887–APRIL 2009
SINGLE SYNCHRONOUS STEP-DOWN CONTROLLER FOR LOW VOLTAGE POWER
RAILS
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FEATURES
APPLICATIONS
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Point-of-load regulation in low power systems
for wide range of applications
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High Efficiency, Low-Power Consumption
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D-CAP2™ Mode Enables Fast Transient
Response
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Digital TV Power Supply
Networking Home Terminal
Digital Set Top Box (STB)
DVD player / recorder
No external parts required for loop
compensation
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Allows Ceramic Output Capacitor
Gaming consoles and other
Integrated Enable Pin to Select POSCAP or
Ceramic Capacitor (MLCC) Use
DESCRIPTION
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High Initial Reference Accuracy
Low Output Ripple
The TPS53114 is
a
single, adaptive on-time
D-CAP2™ mode synchronous buck controller. The
part enables system designers to cost effectively
complete the suite of various end equipment's power
bus regulators with a low external component count
and low standby consumption. The main control loop
for the TPS53114 uses the D-CAP2™ mode topology
which provides a very fast transient response with no
external components. The TPS53114 also has a
PROPRIETARY circuit that enables the device to
adapt to not only low equivalent series resistance
(ESR) output capacitors such as POSCAP/SP-CAP,
but also ceramic using the CER pin. The part
provides convenient and efficient operation with
conversion voltages from 4.5V to 24V and output
voltage from 0.76V to 5.5V.
Wide Input Voltage Range: 4.5V to 24V
Output Voltage Range: 0.76V to 5.5V
Low-Side RDS(on) Loss-less Current Sensing
Adaptive Gate Drivers with Integrated Boost
Diode
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Adjustable Soft Start
Pre-Biased Soft Start
Selectable Switching frequency
350kHz/700kHz
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Built-In 5V Linear Regulator
The TPS53114 is available in the 16 pin TSSOP
package, and is specified from –40°C to 85°C
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.
2
D-CAP2 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 © 2009, Texas Instruments Incorporated