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TPS5403 - NON-SYNCHRONOUS STEP-DOWN REGULATOR

Datasheet Summary

Description

The TPS5403 is a monolithic non-synchronous buck regulator with wide operating input voltage range from 4.5 V to 28 V.

Current mode control with internal slope compensation is implemented to reduce component count.

Features

  • 1.
  • Fixed 3.3-V Output.
  • 4.5-V to 28-V Wide Input Voltage Range.
  • Up to 1.7-A Maximum Continuous Output Loading Current.
  • Pulse Skipping Mode to Achieve High Light Load Efficiency.
  • Over 80% Efficiency at 10-mA Loading.
  • Adjustable 50-kHz to 1.1-MHz Switching Frequency Set by an External Resistor (Leave pin ROSC floating. Set frequency to 120 kHz and ground connection to 70 kHz).
  • Peak Current-Mode Control.
  • Cycle-by-Cycle Over Curr.

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Datasheet preview – TPS5403

Datasheet Details

Part number TPS5403
Manufacturer Texas Instruments
File Size 1.05 MB
Description NON-SYNCHRONOUS STEP-DOWN REGULATOR
Datasheet download datasheet TPS5403 Datasheet
Additional preview pages of the TPS5403 datasheet.

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Full PDF Text Transcription

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TPS5403 www.ti.com SLVSBK5 – SEPTEMBER 2012 4.5-V TO 28-V INPUT VOLTAGE, 3.3-V FIXED OUTPUT, 1.7-A OUTPUT CURRENT, NON-SYNCHRONOUS STEP-DOWN REGULATOR WITH INTEGRATED MOSFET Check for Samples: TPS5403 FEATURES 1 • Fixed 3.3-V Output • 4.5-V to 28-V Wide Input Voltage Range • Up to 1.7-A Maximum Continuous Output Loading Current • Pulse Skipping Mode to Achieve High Light Load Efficiency • Over 80% Efficiency at 10-mA Loading • Adjustable 50-kHz to 1.1-MHz Switching Frequency Set by an External Resistor (Leave pin ROSC floating.
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