| Output options | Adjustable Output |
| Iout (Max) (A) | 3 |
| Vin (Max) (V) | 7 |
| Vin (Min) (V) | 2.5 |
| Vout (Max) (V) | 6.5 |
| Vout (Min) (V) | 1.23 |
| Noise (uVrms) | 100 |
| Iq (Typ) (mA) | 4 |
| Thermal resistance θJA (°C/W) | 50 |
| Rating | Catalog |
| Load capacitance (Min) (μF) | 10 |
| Regulated outputs (#) | 1 |
| Features | Enable |
| Accuracy (%) | 1.5 |
| Dropout voltage (Vdo) (Typ) (mV) | 390 |
| Operating temperature range (C) | -40 to 125 |
- Ultra Low Dropout Voltage
- Stable with Selected Ceramic Capacitors
- Low Ground Pin Current
- Load Regulation of 0.08%
- 10nA Quiescent Current in Shutdown Mode
- Specified Output Current of 3A DC
- Available in DDPAK/TO-263 and TO-220 Packages
- Overtemperature/Overcurrent Protection
- ?40°C to +125°C Junction Temperature Range
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The LP3856-ADJ fast ultra low-dropout linear regulators operate from a +2.5V to +7.0V input supply. These ultra low dropout linear regulators respond very quickly to step changes in load, which makes them suitable for low voltage microprocessor applications. The LP3856-ADJ is developed on a CMOS process which allows low quiescent current operation independent of output load current. This CMOS process also allows the LP3856-ADJ to operate under extremely low dropout conditions.
Dropout Voltage: Ultra low dropout voltage; typically 39mV at 300mA load current and 390mV at 3A load current.
Ground Pin Current: Typically 4mA at 3A load current.
Shutdown Mode: Typically 10nA quiescent current when the shutdown pin is pulled low.
Adjustable Output Voltage: The output voltage may be programmed via two external resistors.