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TPS54231 Datasheet(PDF) 1 Page - Texas Instruments

Part # TPS54231
Description  TPS54231 2-A, 28-V Input, Step-Down DC-DC Converter With Eco-mode?
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

TPS54231 Datasheet(HTML) 1 Page - Texas Instruments

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TPS54231
SLUS851D – OCTOBER 2008 – REVISED OCTOBER 2014
TPS54231 2-A, 28-V Input, Step-Down DC-DC Converter With Eco-mode™
1 Features
3 Description
The TPS54231 device is a 2-V, 2-A non-synchronous
1
3.5- to 28-V Input Voltage Range
buck converter that integrates a low RDS(on) high-side
Adjustable Output Voltage Down to 0.8 V
MOSFET. To increase efficiency at light loads, a
Integrated 80-m
Ω High-Side MOSFET Supports
pulse skipping Eco-mode™ feature is automatically
up to 2 A Continuous Output Current
activated. Furthermore, the 1-
μA shutdown supply
current allows the device to be used in battery
High Efficiency at Light Loads with a Pulse
powered applications. Current mode control with
Skipping Eco-mode™
internal slope compensation simplifies the external
Fixed 570-kHz Switching Frequency
compensation calculations and reduces component
Typical 1-
μA Shutdown Quiescent Current
count while allowing the use of ceramic output
capacitors. A resistor divider programs the hysteresis
Adjustable Slow-Start Limits Inrush Currents
of the input undervoltage lockout. An overvoltage
Programmable UVLO Threshold
transient protection circuit limits voltage overshoots
Overvoltage Transient Protection
during startup and transient conditions. A cycle-by-
cycle current limit scheme, frequency fold back and
Cycle-by-Cycle Current Limit, Frequency Fold
thermal shutdown protect the device and the load in
Back and Thermal Shutdown Protection
the event of an overload condition. The TPS54231
Available in Easy-to-Use SOIC8 Package
device is available in an 8-pin SOIC package that has
Supported by WEBENCH® Software Tool
been
internally
optimized
to
improve
thermal
(www.TI.com/WEBENCH)
performance.
Device Information(1)
2 Applications
PART NUMBER
PACKAGE
BODY SIZE (NOM)
Consumer Applications such as Set-Top Boxes,
TPS54231
SOIC (8)
4.90 mm × 3.90 mm
CPE Equipment, LCD Displays, Peripherals, and
Battery Chargers
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Industrial and Car Audio Power Supplies
5-V, 12-V and 24-V Distributed Power Systems
4 Simplified Schematic
Efficiency
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.


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