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LP2951ACD-3.3/NOPB

Fixed 3.3V LDO, 100mA, 380mV dropout, error flag, SOIC-8

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Manufacturer Part：

LP2951ACD-3.3/NOPB

Package：

SOIC-8 (4.90 x 3.91 x 1.50 mm)

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Description

Product Overview

The LP2951ACD-3.3/NOPB from Texas Instruments is a micropower LDO regulator with fixed 3.3V output, 100mA, 380mV dropout, error flag, and shutdown in an 8-pin SOIC package.

Key Specifications

Output Voltage 3.3 V (fixed)
Output Current 100 mA
Dropout Voltage 380 mV @ 100mA
Quiescent Current 75 uA typical
Input Voltage 3.8 V to 30 V
Output Accuracy +/-1% at 25°C (AC grade)
Error Flag Yes (open-collector)
Shutdown Yes (logic level)
Operating Temperature -40°C to +125°C
Package SOIC-8 (3.9mm wide)

Features

  • Fixed 3.3V LDO in SOIC-8 with error flag and shutdown
  • AC grade +/-1% accuracy, 380mV dropout at 100mA

Applications

  • 3.3V LDO for battery-powered and industrial systems in SOIC-8

The LP2951ACD-3.3/NOPB from Texas Instruments is the SOIC-8 package version of the fixed 3.3V LP2951AC LDO regulator. Compared to the VSSOP-8 version (LP2951ACMX-3.3), this device uses the wider SOIC-8 package which is easier to handle in manual assembly and rework. The device provides a precisely regulated 3.3V output at up to 100mA with only 380mV dropout. The AC grade provides +/-1% output accuracy at 25°C. The error flag output indicates when the output drops below approximately 92% of nominal (3.04V), providing early power-fail warning. The shutdown pin reduces quiescent current to near zero. The /NOPB suffix indicates non-braided tape and reel packaging.

Identical to the LP2951ACMX-3.3/NOPB. The D suffix denotes the SOIC-8 package, which is wider and easier to solder than the VSSOP-8. All electrical operation is the same. See LP2951ACMX-3.3 entry for working principle.

Pin Name Function
1 VOUT 3.3V regulated output
2 SENSE Feedback sense (connect to VOUT)
3 SHDN Shutdown (high = off)
4 GND Ground
5 ERR Error flag (open-collector)
6 TAP Internal divider tap
7 FB Feedback input (NC for fixed 3.3V)
8 VIN Input supply (3.8-30V)
  • 3.3V LDO regulation in SOIC-8 for battery-powered industrial systems
Manufacturer Part Number Package Notes
TI LP2951ACMX-3.3/NOPB VSSOP-8 Same function, smaller package
TI LP2951ACD-5.0/NOPB SOIC-8 Fixed 5.0V version
TI LP2951ACD/NOPB SOIC-8 Adjustable version
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Contact Information

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Service & Packaging

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