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TPS51218 Datasheet Single Synchronous Step-Down Controller

Manufacturer: Texas Instruments

Overview: TPS51218 www.ti.com SLUS935B – MAY 2009 – REVISED FEBRUARY 2012 HIGH PERFORMANCE, SINGLE SYNCHRONOUS STEP-DOWN CONTROLLER FOR NOTEBOOK POWER SUPPLY Check for Samples:.

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General Description

The TPS51218 is a small-sized single buck controller with adaptive on-time D-CAP™ mode.

The device is suitable for low output voltage, high current, PC system power rail and similar point-of-load (POL) power supply in digital consumer products.

A small package with minimal pin-count saves space on the PCB, while a dedicated EN pin and pre-set frequency selections minimize design effort required for new designs.

Key Features

  • 1.
  • 2 Wide Input Voltage Range: 3 V to 28 V.
  • Output Voltage Range: 0.7 V to 2.6 V.
  • Wide Output Load Range: 0 to 20A+.
  • Built-in 0.5% 0.7 V Reference.
  • D-CAP™ Mode with 100-ns Load Step Response.
  • Adaptive On Time Control Architecture With 4 Selectable Frequency Setting.
  • 4700 ppm/°C RDS(on) Current Sensing.
  • Internal 1-ms Voltage Servo Softstart.
  • Pre-Charged Start-up Capability.
  • Built in Output Discharge.

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