Ultra Low Dropout LDO regulators

LD39130S 為一款高精確度穩壓器,可在 1.4V 至 5.5V 的輸入電壓範圍內提供 300mA 的最大電流,壓差為 300mV。通過在輸出端使用陶瓷電容器來穩定設備,低壓降、低靜態電流、低噪聲特性,使其適用於低功率電池供電的應用。
Ultra Low Dropout LDO regulators
The LD39130S is a high accuracy voltage regulator that provides 300 mA maximum current from an input voltage ranging from 1.4 V to 5.5 V, with a typical dropout voltage of 300 mV.It is available in DFN6 1.2 x 1.3 mm package and in ultra-small CSP 4 bumps 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 make it suitable for low power battery-operated applications. It integrates an internal logic circuitry, which allows the regulator to be in ultra-low consumption mode (green mode), when the output current required is very low. The normal working mode, with fast transient response, is restored when the load current increases.

The enable logic control function puts the LD39130S in shutdown mode allowing a total current consumption lower than 0.1 µA. The current foldback and thermal protection are provided.

  • Input voltage from 1.4 to 5.5 V
  • Ultra low dropout voltage (300 mV typ. at 300 mA load)
  • Automatic green mode
  • Very low quiescent current (1 µA in green mode, 45 µA in normal mode and 0.1 µA typ. in off mode)
  • Output voltage tolerance: ±1.0% at 25 °C
  • 300 mA guaranteed output current
  • Wide range of output voltages available on request: adjustable from 0.8 V, fixed up to 4.0 V in 100 mV step
  • Logic-controlled electronic shutdown
  • Internal soft-start
  • Compatible with ceramic capacitor COUT = 330 nF
  • Internal current foldback and thermal protections
  • Available in DFN6 1.2x1.3 mm and Flip-chip 4 bumps 0.69 x 0.69 mm. 0.4 pitch
  • ​​​Operating temperature range: -40 °C to 125 °C
*STMicroelectronics Authorized Distributor
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