| Output options | Adjustable Output, Fixed Output |
| Iout (Max) (A) | 0.8 |
| Vin (Max) (V) | 7 |
| Vin (Min) (V) | 2.5 |
| Vout (Max) (V) | 5 |
| Vout (Min) (V) | 1.215 |
| Fixed output options (V) | 1.8, 2.5, 3.3 |
| Noise (uVrms) | 150 |
| Iq (Typ) (mA) | 3 |
| Thermal resistance θJA (°C/W) | 32 |
| Rating | Catalog |
| Load capacitance (Min) (μF) | 33 |
| Regulated outputs (#) | 1 |
| Features | Enable, Power good |
| Accuracy (%) | 3 |
| PSRR @ 100 KHz (dB) | 32 |
| Dropout voltage (Vdo) (Typ) (mV) | 240 |
| Operating temperature range (C) | -40 to 125 |
- Input Supply Voltage: 2.5 V to 7 V
- Ultra-Low Dropout Voltage
- Low Ground Pin Current
- Load Regulation of 0.02%
- 15-μA Quiescent Current in Shutdown Mode
- Specified Output Current of 0.8-A DC
- Output Voltage Accuracy ±1.5%
- ERROR Flag Indicates Output Status (LP3961)
- Sense Option Improves Better Load Regulation
(LP3964) - Extremely Low Output Capacitor Requirements
- Overtemperature and Overcurrent Protection
- ?40°C to 125°C Junction Temperature Range
The LP396x series of fast ultra-low-dropout linear regulators operate from a 2.5-V to 7-V input supply. A wide range of preset output voltage options are available. These ultra-low dropout linear regulators respond very fast to step changes in load which makes them suitable for low-voltage microprocessor applications. The LP3961 and LP3964 are developed on a CMOS process which allows low quiescent current operation independent of output load current, as well as operation under extremely low dropout conditions.
Dropout Voltage: Ultra-low dropout voltage; typically 24 mV at 80-mA load current and 240 mV at 800-mA load current.
Ground Pin Current: Typically 4 mA at 800-mA load current.
ERROR Flag: ERROR flag goes low when the output voltage drops 10% below nominal value (for LP3961).
SENSE: SENSE pin improves regulation at remote loads (for LP3964).
Precision Output Voltage: Multiple output voltage options are available ranging from 1.2 V to 5 V and adjustable (LP3964), with a specified accuracy of ±1.5% at room temperature, and ±3% over all conditions (varying line, load, and temperature).
