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1 A low quiescent current low noise voltage regulator

Quantity $ per Unit Savings
1 - 9$1.560%
10 - 24$1.4010%
25 - 99$1.3215%
100 - 140$1.1328%
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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 NameDFN6 3x3

The LD39100 provides 1 A maximum current with an input voltage range from 1.5 V to 5.5 V and a typical dropout voltage of 200 mV. The device is stable with ceramic capacitors on the input and output.

The ultra-low dropout voltage, low quiescent current and low-noise features make it suitable for low power battery-powered applications. Power supply rejection is 70 dB at low frequency and starts to roll off at 10 kHz.

Enable logic control function puts the LD39100 in shutdown mode, allowing a total current consumption lower than 1 µA. The device also includes short-circuit constant current limiting and thermal protection.

LD39100 is available also in AEC-Q100 qualified version, in the DFN6 (3x3 mm) with wettable flank package.

Key features
  • AEC-Q100 qualified
  • Input voltage from 1.5 to 5.5 V
  • Ultra-low dropout voltage (200 mV typ. at 1 A load)
  • Very low quiescent current (20 µA typ. at no load, 200 µA typ. at 1 A load, 1 µA max. in off mode)
  • Very low-noise with no bypass capacitor (30 µ VRMS at VOUT = 0.8 V)
  • Output voltage tolerance: ±2.0% at 25 °C
  • 1 A guaranteed output current
  • Wide range of output voltages available on request: 0.8 V to 4.5 V with 100 mV step and adjustable from 0.8 
  • Logic-controlled electronic shutdown
  • Stable with ceramic capacitors COUT = 1 µF
  • Internal current and thermal limit
  • DFN6 (3x3 mm) package
  • Temperature range: -40 °C to 125 °C