The LP3853/LP3856 series of fast ultra low-dropout linear regulators are developed on a CMOS process which allows low quies- cent current operation independent of output load current. This CMOS process also allows the LP3853/LP3856 to op- erate under extremely low dropout conditions.
The document describes the LP3853/LP3856 series of fast ultra low-dropout linear regulators designed for low voltage microprocessor applications. These devices operate from a +2.5V to +7.0V input supply and feature an ultra-low dropout voltage, typically 39mV at 300mA load current. The regulators are developed on a CMOS process allowing low quiescent current operation independent of the output load current.
| Output Current (DC) | 3A |
|---|---|
| Input Supply Voltage Range | +2.5V to +7.0V |
| Dropout Voltage (Typical) | 39mV @ 300mA, 390mV @ 3A |
| Ground Pin Current (Typical) | 4mA @ 3A |
| Shutdown Quiescent Current | 10nA |
| Output Voltage Accuracy (Room Temp) | ±1.5% |
| Operating Temperature Range | -40°C to +125°C |
Multiple output voltage options are available ranging from 1.8V to 5.0V.
Yes, they are stable with selected ceramic capacitors.
The quiescent current in shutdown mode is typically 10nA when the shutdown pin is pulled low.