TPS5420-Q1
www.ti.com.....................................................................................................
TPS5420-Q1
www.ti.com................................................................................................................................................... SLVS752B – NOVEMBER 2007 – REVISED JUNE 2008
2-A WIDE-INPUT-RANGE STEP-DOWN SWIFT™ CONVERTER
FEATURES
1
2 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 SWIFT™ Documentation, Application
Notes and Design Software, See the TI Website at www.ti.com/swift
APPLICATIONS
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 accur...