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LP38869 - Low-Dropout Linear Regulator

Description

The LP38869 low-dropout linear regulator operates with an input voltage supply from +2.7V to +5.5V input, and delivers a specified 1A load current with a low 200 mV dropout.

The high 50 dB PSRR at 100 kHz results from a high gain control loop that also yields excellent transient response.

Features

  • 1.
  • 2 Operating Input Supply Range: +2.7V to + 5.5V.
  • Maximum Continuous Output Current: 1A.
  • Preset Output Voltage of 2.5V, or Adjustable Output Voltage From 0.8V to 5.0V.
  • Pre-Set Output Initial VOUT Tolerance ±0.5%.
  • Adjustable VREF Tolerance of ±0.75%.
  • PSRR of 50dB at 100kHz.
  • Low 200 mV Dropout at 1A.
  • Typical 2 µA Supply Current in Shutdown Mode.
  • Adjustable Soft-Start for Output Current.
  • Fold-Back Output Curr.

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Full PDF Text Transcription

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LP38869 www.ti.com SNVS877B – AUGUST 2012 – REVISED APRIL 2013 LP38869 1A FlexCap, Low-Dropout Linear Regulator with 0.75% Accuracy Check for Samples: LP38869 FEATURES 1 •2 Operating Input Supply Range: +2.7V to + 5.5V • Maximum Continuous Output Current: 1A • Preset Output Voltage of 2.5V, or Adjustable Output Voltage From 0.8V to 5.0V • Pre-Set Output Initial VOUT Tolerance ±0.5% • Adjustable VREF Tolerance of ±0.
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