TPS53114 Datasheet, PDF (1/20 Pages) Texas Instruments – SINGLE SYNCHRONOUS STEP-DOWN CONTROLLER FOR LOW VOLTAGE POWER RAILS

TPS53114
www.ti.com ..................................................................................................................................................................................................... SLVS887 – APRIL 2009
SINGLE SYNCHRONOUS STEP-DOWN CONTROLLER FOR LOW VOLTAGE POWER
RAILS
FEATURES
1
•2 High Efficiency, Low-Power Consumption
• D-CAP2™ Mode Enables Fast Transient
Response
• No external parts required for loop
compensation
• Allows Ceramic Output Capacitor
• Integrated Enable Pin to Select POSCAP or
Ceramic Capacitor (MLCC) Use
• High Initial Reference Accuracy
• Low Output Ripple
• Wide Input Voltage Range: 4.5V to 24V
• Output Voltage Range: 0.76V to 5.5V
• 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
350kHz/700kHz
• Built-In 5V Linear Regulator
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 and other
DESCRIPTION
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.
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.
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, Texas Instruments Incorporated