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TPS65257 - SYNCHRONOUS STEP DOWN THREE DC-DC CONVERTER

Description

TPS65257 is a power management IC with three step-down buck converters.

Both high-side and low-side MOSFETs are integrated to provide fully synchronous conversion with higher efficiency.

Features

  • 1.
  • Wide Input Supply Voltage Range: 4.5 V - 16 V.
  • 0.8-V, 1% Accuracy Reference.
  • Continuous Loading: 3 A (Buck1), 2 A (Buck2 and 3).
  • Maximum Current: 3.5 A (Buck 1), 2.5 A (Buck2 and 3).
  • Synchronous Operation, 300-kHz.
  • 2.2-MHz Switching Frequency Set By External Resistor.
  • External Enable Pins With Built-In Current Source for Easy Sequencing.
  • External Soft Start Pins.
  • Adjustable Cycle-by-Cycle Current Limit Set by Ext.

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Datasheet preview – TPS65257

Datasheet Details

Part number TPS65257
Manufacturer Texas Instruments
File Size 2.66 MB
Description SYNCHRONOUS STEP DOWN THREE DC-DC CONVERTER
Datasheet download datasheet TPS65257 Datasheet
Additional preview pages of the TPS65257 datasheet.

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Full PDF Text Transcription

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TPS65257 www.ti.com SLVSB32A – SEPTEMBER 2011 – REVISED DECEMBER 2012 4.5-V TO 16-V INPUT, HIGH CURRENT, SYNCHRONOUS STEP DOWN THREE DC-DC CONVERTER WITH INTEGRATED FET, USB SWITCH AND PUSH BUTTON CONTROL Check for Samples: TPS65257 FEATURES 1 • Wide Input Supply Voltage Range: 4.5 V - 16 V • 0.8-V, 1% Accuracy Reference • Continuous Loading: 3 A (Buck1), 2 A (Buck2 and 3) • Maximum Current: 3.5 A (Buck 1), 2.5 A (Buck2 and 3) • Synchronous Operation, 300-kHz – 2.
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