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TPS51120 Datasheet Synchronous Step-Down Controller

Manufacturer: Texas Instruments

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General Description

The TPS51120 is a highly sophisticated dual, synchronous step-down controller.

It is a full featured controller designed to run directly off a three- or fourcell Li-ion battery and provide high-power and 5-V and/or 3.3-V standby regulation for all the downstream circuitry in a notebook computer system.

High-current, 100-mA, 5-V or 3.3-V on-board linear regulators have glitch-free switch over function to SMPS and can be kept alive independently during standby state.

Overview

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community TPS51120 SLUS670C – JULY 2005 – REVISED JANUARY 2015 TPS51120 Dual, Synchronous Step-Down Controller With 100-mA Standby Regulators.

Key Features

  • 1 3.3-V and 5-V 100-mA Bootstrapped Standby Regulators with Independent Enables.
  • Selectable D-CAP™ Mode Enables Fast Transient Response Less than 100 ns.
  • Selectable Low Ripple Current Mode.
  • Less than 1% Internal Reference Accuracy.
  • Selectable PWM-only/Auto-skip Modes.
  • Low-side RDS(on) Loss-less Current Sensing.
  • RSENSE Accurate Current Sense Option.
  • Internal Soft-Start and Integrated VOUT Discharge Transistors.
  • Integ.

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