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LM2696 - Constant On Time Buck Regulator

Description

The LM2696 is a pulse width modulation (PWM) buck regulator capable of delivering up to 3A into a load.

The control loop utilizes a constant on-time control scheme with input voltage feed forward.

This provides a topology that has excellent transient response without the need for compensation.

Features

  • 1.
  • 2 Input Voltage Range of 4.5V.
  • 24V.
  • Constant On-Time.
  • No Compensation Needed.
  • Maximum Load Current of 3A.
  • Switching Frequency of 100 kHz.
  • 500 kHz.
  • Constant Frequency Across Input Range.
  • TTL Compatible Shutdown Thresholds.
  • Low Standby Current of 12 µA.
  • 130 mΩ Internal MOSFET Switch.

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Full PDF Text Transcription

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LM2696 www.ti.com SNVS375B – OCTOBER 2005 – REVISED APRIL 2013 LM2696 3A, Constant On Time Buck Regulator Check for Samples: LM2696 FEATURES 1 •2 Input Voltage Range of 4.5V–24V • Constant On-Time • No Compensation Needed • Maximum Load Current of 3A • Switching Frequency of 100 kHz–500 kHz • Constant Frequency Across Input Range • TTL Compatible Shutdown Thresholds • Low Standby Current of 12 µA • 130 mΩ Internal MOSFET Switch APPLICATIONS • High Efficiency Step-Down Switching Regulators • LCD Monitors • Set-Top Boxes DESCRIPTION The LM2696 is a pulse width modulation (PWM) buck regulator capable of delivering up to 3A into a load. The control loop utilizes a constant on-time control scheme with input voltage feed forward.
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