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STMicroelectronics LD39020 Quiescent Current Linear Regulators

STMicroelectronics LD39020 Very Low Quiescent Current Linear Regulators are a high accuracy voltage regulator that provides 200mA of maximum current from an input voltage ranging from 1.5V to 5.5V, with a typical dropout voltage of 200mV. These devices are stabilized with a ceramic capacitor on the output. The ultra low drop voltage, low quiescent current and low noise features, together with the internal soft-start circuit, make the LD39020 suitable for low power battery-operated applications.

The STMicroelectronics LD39020 Quiescent Current Linear Regulators are available in compact available in DFN4 and SOT23-5L packages, ideal for space-constrained applications.

Features

  • Input voltage from 1.5V to 5.5V
  • Ultra low dropout voltage (200mV typ. at 200mA load)
  • Very low quiescent current (20μA typ at no load, 0.03μA typ in off mode)
  • Output voltage tolerance: ±0.5% (A version) or ± 2.0% @ 25°C (standard version)
  • 200mA guaranteed output current
  • High PSRR (80dB @ 1kHz, 50db @ 100kHz)
  • Wide range of output voltages available on request: from 0.8V up to 5.0V in 50mV steps
  • Logic-controlled electronic shutdown
  • Internal soft-start
  • Optional output voltage discharge feature
  • Compatible with ceramic capacitor COUT = 0.47μF
  • Internal constant current and thermal protections
  • -40°C to +125°C operating temperature range
  • 1.0mm x 1.0mm DFN4 package

Applications

  • Smartphones
  • Tablets
  • Cameras
  • Cordless phones and similar battery-powered systems
  • Portable media players

STEVAL-ISB037V1 Evaluation Board

STMicroelectronics STEVAL-ISB037V1 Evaluation Board features the LD39020 high performance linear voltage regulator. The regulator is configured to convert a DC input voltage from 2.4V to 5.5V into a precise and stable 1.8V output voltage. Only two small ceramic capacitors are needed to implement the linear regulator solution.

Block Diagram

STMicroelectronics LD39020 Quiescent Current Linear Regulators

Pin Designations

Mechanical Drawing - STMicroelectronics LD39020 Quiescent Current Linear Regulators

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發佈日期: 2014-11-05 | 更新日期: 2022-03-11