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800mA Fast Ultra Low Dropout Linear Regulator


Package | PIN: SOT-223 (NDC) | 5
Temp: Q (-40 to 125)
Carrier: Cut Tape
Qty Price
1-9 $2.46
10-24 $2.21
25-99 $2.06
100-249 $1.81
250-499 $1.69
500-749 $1.44
750-999 $1.21
1000+ $1.16


  • 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
  • Extremely Low Output Capacitor Requirements
  • Overtemperature and Overcurrent Protection
  • −40°C to 125°C Junction Temperature Range

Texas Instruments  LP3961EMP-1.8/NOPB

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).