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TPS51275B-1 - Dual Synchronous Step-Down Controller

General Description

The TPS51275B-1 device is a cost-effective, dualsynchronous buck controller targeted for notebook system-power supply solutions.

The device has 5-V and 3.3-V low-dropout regulators (LDOs) and requires few external components.

Key Features

  • 1 Input Voltage Range: 5 V to 24 V.
  • Output Voltages: 5 V and 3.3 V (Adjustable Range ±10%).
  • Built-in, 100-mA, 5-V, and 3.3-V LDOs.
  • Clock Output for Charge-Pump.
  • ±1% Reference Accuracy.
  • Adaptive On-Time D-CAP™ Mode Control Architecture with 300-kHz and 355-kHz Frequency Setting.
  • Out-of-Audio™ (OOA) Light-Load Operation.
  • Internal 3.2-ms Voltage Servo Soft-Start.
  • Low-Side RDS(on) Current Sensing Scheme.
  • Built-.

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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 TPS51275B-1 SLVSCT3 – MARCH 2015 TPS51275B-1 Dual Synchronous, Step-Down Controller With 5-V and 3.3-V LDOs 1 Features •1 Input Voltage Range: 5 V to 24 V • Output Voltages: 5 V and 3.3 V (Adjustable Range ±10%) • Built-in, 100-mA, 5-V, and 3.3-V LDOs • Clock Output for Charge-Pump • ±1% Reference Accuracy • Adaptive On-Time D-CAP™ Mode Control Architecture with 300-kHz and 355-kHz Frequency Setting • Out-of-Audio™ (OOA) Light-Load Operation • Internal 3.