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ON Semiconductor

ON Semiconductor NCV8730 CMOS LDO Regulators

With available Power Good circuit

The ON Semiconductor NCV8730 CMOS LDO Regulator family is based on a unique combination of features: very low quiescent current, fast transient response and high input and output voltage ranges.

Designed for up to 38 V input voltage and 150 mA output current with a quiescent current of only 1 µA, the NCV8730 LDO regulator is ideal for battery−powered, always−on systems.

Several fixed output voltage versions are available as well as the adjustable version. The device (version B) implements power good circuit (PG) which indicates that output voltage is in regulation. This signal could be used for power sequencing or as a Microcontroller reset. Internal short circuit and over temperature protections saves the device against overload conditions.

NCV8730 Features and Benefits

  • Operating input voltage range: 2.7 V to 38 V
  • Output voltage: 1.2 V to 24 V
  • Capable of sourcing 200 mA peak output current
  • Low shutdown current: 100 nA typ.
  • Very low quiescent current: 1 uA typ.
  • Low dropout: 290 mV typ. at 150 mA, 3.3 V Version
  • Output voltage accuracy ±1%
  • Power good output (version B)
  • Stable with small 1 uF ceramic capacitors
  • Built−in soft start circuit

 

  • Wide input voltage range
  • Wide output voltage range
  • The 150 mA device is able to cover 200 mA current peak demands
  • Low current consumption in shutdown state
  • Low current consumption in no load state
  • Small Vin - Vout difference is enough for regulation
  • Very good precision of output voltage
  • Additional feature for Vout monitoring
  • Just a small bypass capacitor is needed
  • Suppresses Inrush Current

NCV8730 Applications

  • MCU/analog power supply from higher voltage internal rail
  • Power supply for gate driver

End Products

  • LED Lighting
  • Infotainment Systems (AVN)
  • On Board Charger
  • Telematics
  • General Purpose Automotive

ON Semiconductor NCV8730 Block Diagram

NCV8730 Simplified Block Diagram