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TPS51427 - SYNCHRONOUS STEP-DOWN CONTROLLER

General Description

The TPS51427 is a dual synchronous step-down controller designed for notebook and mobile communications applications.

This device is part of a low-cost suite of notebook power bus regulators that enables system designs with low external component counts.

Key Features

  • 1.
  • 23 Fixed-Frequency Emulated On-Time Control; Frequency Selectable from Three Options.
  • D-CAP™ Mode Enables Fast Transient Response Less than 100 ns.
  • Advanced Ramp Compensation Allows Low Output Ripple with Minimal Jitter.
  • Selectable PWM-Only/OOA™/Auto-Skip Modes.
  • Wide Input Voltage Range: 5.5 V to 28 V.
  • Dual Fixed or Adjustable SMPS:.
  • 0.7 V to 5.9 V (Channel1).
  • 0.5 V to 2.5 V (Channel2).
  • Fixed 3.3-V/5-V, or Adjusta.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
TPS51427 www.ti.com................................................................................................................................................ SLUS819B – APRIL 2008 – REVISED SEPTEMBER 2008 DUAL D-CAP™ SYNCHRONOUS STEP-DOWN CONTROLLER FOR NOTEBOOK POWER RAILS FEATURES 1 •23 Fixed-Frequency Emulated On-Time Control; Frequency Selectable from Three Options • D-CAP™ Mode Enables Fast Transient Response Less than 100 ns • Advanced Ramp Compensation Allows Low Output Ripple with Minimal Jitter • Selectable PWM-Only/OOA™/Auto-Skip Modes • Wide Input Voltage Range: 5.5 V to 28 V • Dual Fixed or Adjustable SMPS: – 0.7 V to 5.9 V (Channel1) – 0.5 V to 2.5 V (Channel2) • Fixed 3.3-V/5-V, or Adjustable Output 0.7-V to 4.5-V LDO; Capable of Sourcing 100 mA • Fixed 3.