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Product details

Parameters

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 Load capacitance (Min) (µF) 33 Rating Catalog 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 open-in-new Find other Linear regulators (LDO)

Package | Pins | Size

SOT-223 (NDC) 5 45 mm² 6.5 x 6.96 TO-220 (NDH) 5 86 mm² 10.16 x 8.47 TO-263 (KTT) 5 155 mm² 10.16 x 15.24 open-in-new Find other Linear regulators (LDO)

Features

  • 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
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Description

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).

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Exact equivalent in functionality and parametrics to the compared device:
LP3871 ACTIVE 800-mA, 7-V, low-dropout voltage regulator with power good & enable 800-mA LDO with similar performance and pin-to-pin. Available with 5V-output
Same functionality but is not pin-for-pin or parametrically equivalent to the compared device:
TPS746 ACTIVE 1-A, low-IQ, high-accuracy, adjustable ultra-low-dropout voltage regulator with power good & enable 1-A LDO in a smaller 2 x 2mm package with Power-Good
TPS7A91 ACTIVE 1-A, low-noise, high-PSRR, adjustable ultra-low-dropout voltage regulator with high-accuracy 1-A LDO with low-noise (4.4 uVRMS), high-PSRR, and soft-start control in 2.5 x 2.5mm package

Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 5
Type Title Date
* Datasheet LP396x 800-mA Fast Ultra-Low-Dropout Linear Regulators datasheet (Rev. J) Jun. 18, 2015
Technical articles LDO basics: capacitor vs. capacitance Aug. 01, 2018
Technical articles LDO Basics: Preventing reverse current Jul. 25, 2018
Technical articles LDO basics: introduction to quiescent current Jun. 20, 2018
Technical articles LDO basics: noise – part 1 Jun. 14, 2017

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

CAD/CAE symbols

Package Pins Download
DDPAK/TO-263 (KTT) 5 View options
SOT-223 (NDC) 5 View options
TO-220 (NDH) 5 View options

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