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TPS51123 Datasheet Step-down Controller

Manufacturer: Texas Instruments

Overview: TPS51123 .ti. SLUS890E – DECEMBER 2008 – REVISED JANUARY 2013 Dual-Synchronous, Step-Down Controller with Out-of-Audio™ Operation and 100-mA LDOs for Notebook System Power Check for Samples:.

General Description

The TPS51123 is a cost effective, dual-synchronous buck controller targeted for notebook system power supply solutions.

It provides 5-V and 3.3-V LDOs and requires few external ponents.

The TPS51123 supports high efficiency, fast transient responses and provides a bined power-good signal.

Key Features

  • 1.
  • 2 Wide-Input Voltage Range: 5.5 V to 28 V.
  • Output Voltage Range: 2 V to 5.5 V.
  • Built-in 100-mA 5-V/3.3-V LDO with Switches.
  • Built-in 1% 2-V Reference Output.
  • With/Without Out-of-Audio™ Mode Selectable Light-Load and PWM only Operation.
  • Internal 1.6-ms Voltage Servo Softstart.
  • Adaptive On-Time Control Architecture with Four Selectable Frequency Setting.
  • 4500 ppm/°C RDS(on) Current Sensing.
  • Built-In Output Discharge.

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TPS51123 Distributor