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TPS51117 - Single Synchronous Step-Down Controller

General Description

The TPS51117 device is a cost-effective, synchronous buck controller for POL voltage regulation in notebook PC applications.

The controller is dedicated for the operation of the Adaptive OnTime D-CAP mode.

This mode provides ease-of-use, low external component count, and fast transient response.

Key Features

  • 1 High Efficiency, Low Power Consumption, 4.5-μA Typical Shutdown Current.
  • Fixed Frequency Emulated On-Time Control, Adjustable from 100 kHz to 550 kHz.
  • D-CAP™ Mode With 100-ns Load Step Response.
  • < 1% Initial Reference Accuracy.
  • Output Voltage Range: 0.75 V to 5.5 V.
  • Wide Input Voltage Range: 1.8 V to 28 V.
  • Selectable Auto-Skip/PWM-Only Operation.
  • Temperature Compensated (4500 ppm/°C) Low-Side RDS(on) Overcurrent Sensing.

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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.

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Product Folder Sample & Buy Technical Documents Tools & Software Support & Community TPS51117 SLVS631C – DECEMBER 2005 – REVISED MAY 2015 TPS51117 Single Synchronous Step-Down Controller 1 Features •1 High Efficiency, Low Power Consumption, 4.5-μA Typical Shutdown Current • Fixed Frequency Emulated On-Time Control, Adjustable from 100 kHz to 550 kHz • D-CAP™ Mode With 100-ns Load Step Response • < 1% Initial Reference Accuracy • Output Voltage Range: 0.75 V to 5.5 V • Wide Input Voltage Range: 1.8 V to 28 V • Selectable Auto-Skip/PWM-Only Operation • Temperature Compensated (4500 ppm/°C) Low-Side RDS(on) Overcurrent Sensing • Negative Overcurrent Limit • Integrated Boost Diode • Integrated OVP/UVP and Thermal Shutdown • Powergood Signal • Internal 1.