TPS5420-Q1
www.ti.com. SLVS752B – NOVEMBER 2007 – REVISED JUNE 2008 2-A WIDE-INPUT-RANGE STEP-DOWN SWIFT™ CONVERTER
FEATURES APPLICATIONS Qualified for Automotive Applications Wide Input Voltage Range: 5.5 V to 36 V Up to 2-A Continuous (3-A Peak) Output
Current High Efficiency up to 95% Enabled by 110-mΩ
Integrated MOSFET Switch Wide Output Voltage Range: Adjustable Down
to 1.22 V With 1.5% Initial Accuracy Internal Compensation Minimizes External
Parts Count Fixed 500-kHz Switching Frequency for Small
Filter Size Improved Line Regulation and Transient
Response by Input Voltage Feed Forward System Protected by Over Current Limiting,
Over Voltage Protection, and Thermal
Shutdown –40°C to 125°C Operating Junction
Temperature Range Available in Small 8-Pin SOIC Package For SWIFTв„ў Documentation, Application
Notes and Design Software, See the TI Website
at www.ti.com/swift 1 2 Industrial and Car Audio Power Supplies
Battery Chargers, High-Power LED Supplies
12-V/24-V Distributed Power Systems DESCRIPTION
As a member of the SWIFT family of dc/dc regulators,
the TPS5420 is a high-output-current PWM converter
that integrates a low-resistance high-side N-channel
MOSFET. Included on the substrate with the listed
features is a high-performance voltage error amplifier
that provides tight voltage regulation accuracy under
transient conditions, an undervoltage-lockout circuit to …
