The Si91872 is a 300-mA CMOS LDO (low dropout) voltage regulator. It is the perfect choice for low voltage, low power applications. An ultra low ground current and ultra fast turn-on make this part attractive for battery operated power systems. The Si91872 also offers ultra low dropout voltage to prolong battery life in portable electronics. Systems requiring a quiet voltage source will benefit from the Si91872's low output noise. The Si91872 is designed to maintain regulation in a variety of load conditions, producing a stable output voltage.
The Si91872 is a 300-mA CMOS LDO (low dropout) voltage regulator designed for low voltage, low power applications. It features ultra-low ground current and fast start-up times, making it ideal for battery-operated systems. The device offers an output noise of 75 µVrms (10-Hz to 100-kHz) and includes a built-in active pull-down circuit for improved transient response.
| Peak Output Current | 400 mA |
|---|---|
| Dropout Voltage | 300 mV |
| Package Type | MLP33-5 PowerPAK |
Yes, it features an out-of-regulation error flag (power good) output.
The device can deliver a peak output current of 400 mA.
The shutdown supply current is a maximum of 1 mA when VSD is 0 V.