STMicroelectronics – Smallest form factor packages for high performances regulators

The LD39020 high accuracy voltage regulator provides 200 mA of maximum current from an input voltage ranging from 1.5 V to 5.5 V, with a typical dropout voltage of 200 mV. It is available in DFN4 1 x 1 mm package, allowing the maximum space saving. The device is 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. An enable logic control function puts the LD39020 in shutdown mode allowing a total current consumption lower than 0.1 μA. Constant current and thermal protection are provided.

Key Features

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

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