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300 mA very low quiescent current linear regulator IC

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1 - 9$0.590%
10 - 99$0.5016%
100 - 499$0.3442%
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In stock
Parameter NameParameter Value
Operating Temp Min Celsius-40.0
Operating Temp Max Celsius125.0
Packing TypeTape And Reel
RoHs compliantEcopack2
Package NameDFN4 1x1

The LD39030 high accuracy voltage regulator provides 300 mA of maximum current from an input voltage ranging from 1.5 V to 5.5 V, with a typical dropout voltage of 300 mV.

It is available in DFN4 1 x 1 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 LD39030 suitable for low power battery-operated applications.

An enable logic control function puts the LD39030 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 (300 mV typ. at 300 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)
  • 300 mA guaranteed output current
  • High PSRR (80 dB@1 kHz, 50 db@100 kHz)
  • 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 = 0.47 µF
  • Internal constant current and thermal protections
  • Available in DFN4 1x1
  • Operating temperature range: -40 °C to 125 °C