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Manufacturer Part #


LP Series 100 mA Adjustable Fixed Surface Mount Voltage Regulator - SOIC-8

Product Specification Section
Technical Attributes
Attributes Table
Input Voltage-Max: 30V
Output Voltage Range: 1.25V to 29V
Output Voltage Fixed: 5V
Dropout Voltage-Max: 450mV
Output Current-Max: 100mA
Rated Power: 0.7W
Tolerance (%): 0.5%
Operating Temp Range: -65°C to +150°C
Regulator Topology: Adjustable Fixed
Quiescent Current: 75µA
No. of Outputs: Single
Output Noise: 126µV
Load Regulation (%): 0.1%
Current - Limit: 300mA
Line Regulation (%): 0.1%
Package Style:  SOIC-8
Mounting Method: Surface Mount
Features & Applications
The LP2951 are micropower low dropout (LDO) linear voltage regulators that are specifically designed to maintain proper regulation with an extremely low input-to-output voltage differential. These devices feature a very low quiescent bias current of 75 µA and are capable of supplying output currents in excess of 100 mA. Internal current and thermal limiting protection is provided.

Due to the low input-to-output voltage differential and bias current specifications, these devices are ideally suited for battery powered computer, consumer, and industrial equipment where an extension ofuseful battery life is desirable. The LP2951 is available in the three pin case 29 and DPAK packages. The 'A' suffix devices feature an initial output voltage tolerance +/- 0.5%.


  • Low Quiescent Bias Current of 75 µA
  • Low Input−to−Output Voltage Differential of 50 mV at 100 µA and 380 mV at 100 mA
  • 5.0 V, 3.3 V or 3.0 V, ± 0.5% Allows Use as a Regulator or Reference
  • Extremely Tight Line and Load Regulation
  • Requires Only a 1.0 µA Output Capacitor for Stability
  • Internal Current and Thermal Limiting
  • Pb−Free Packages are Available
  • NCV Prefix for Automotive and Other Applications Requiring Site and Control Changes
  • Error (Bar) Output Signals an Out of Regulation Condition
  • Output Programmable from 1.25 V to 29 V
  • Logic Level Shutdown Input


  • Automotive

Learn more about the LP2951 family of Linear Regulators

Pricing Section
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Factory Lead Time:
9 Weeks
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