• LP2981-50DBVR SOT23-5
LP2981-50DBVR SOT23-5

LP2981-50DBVR

LDO Regulator Pos 5V 0.1A 5-Pin SOT-23 T/R

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Overview of LP2981-50DBVR

The LP2981-50DBVR is a 100mA, low-noise, low-dropout voltage regulator designed for use in various electronic applications. It offers a fixed 5.0V output voltage with very low quiescent current, making it ideal for powering sensitive components.

Pinout

(Note: The pin configuration below is a general representation. Refer to the specific datasheet for precise details.)

  • EN: Enable Pin
  • GND: Ground Connection
  • VOUT: Output Voltage (5.0V)
  • VIN: Input Voltage

Circuit Diagram

Include a circuit diagram illustrating the connections and operation of the LP2981-50DBVR voltage regulator for a visual representation.

Key Features

  • Low-Noise LDO: The LP2981-50DBVR is a low-noise, low-dropout regulator that ensures clean power supply for sensitive circuitry.
  • Fixed 5.0V Output: Provides a stable 5.0V output voltage suitable for powering a wide range of components.
  • Low Quiescent Current: Operates with very low quiescent current, conserving power and extending battery life.
  • Short Circuit Protection: Includes built-in protection against short circuits, enhancing system reliability.
  • Small Package: Available in a compact SOT-23 package, saving space in circuit designs.

Note: For detailed technical specifications, please refer to the LP2981-50DBVR datasheet.

Application

  • Sensor Modules: Ideal for providing regulated power to sensor modules and sensitive electronic components.
  • Portable Devices: Suitable for use in battery-powered portable devices requiring a stable 5.0V supply.
  • Audio Circuits: Can be used in audio circuits to ensure noise-free power for audio processing components.

Functionality

The LP2981-50DBVR voltage regulator offers a stable 5.0V output with low noise and low dropout characteristics. It is a reliable solution for powering applications that demand clean and efficient power sources.

Usage Guide

  • Input Voltage: Connect the VIN pin to the input voltage source (typically a battery or power supply).
  • Ground Connection: Connect the GND pin to the system ground for proper operation.
  • Enable Pin: Use the EN pin to enable or disable the regulator as needed.

Frequently Asked Questions

Q: What is the maximum output current of the LP2981-50DBVR?
A: The LP2981-50DBVR is rated for a maximum output current of 100mA, suitable for low-power applications.

Q: Is the LP2981-50DBVR suitable for noise-sensitive applications?
A: Yes, the LP2981-50DBVR is designed as a low-noise regulator, making it ideal for noise-sensitive circuitry.

Equivalent

For similar functionalities, consider these alternatives to the LP2981-50DBVR:

  • LM2937-5.0: A 500mA low-dropout regulator with a fixed 5.0V output voltage.
  • ADP3335-5: This is a high-accuracy LDO regulator with a fixed 5.0V output and low quiescent current.

LP2981-50DBVR

Specifications

The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.

Output options Fixed Output Iout (max) (A) 0.1
Vin (max) (V) 16 Vin (min) (V) 2.2
Vout (max) (V) 5 Vout (min) (V) 2.8
Fixed output options (V) 2.8, 2.9, 3, 3.3, 5 Noise (µVrms) 160
Iq (typ) (mA) 0.065 Thermal resistance θJA (°C/W) 205
Rating Catalog Load capacitance (min) (µF) 2.2
Regulated outputs (#) 1 Features Enable
Accuracy (%) 6 PSRR at 100 KHz (dB) 41
Dropout voltage (Vdo) (typ) (mV) 200 Operating temperature range (°C) -40 to 125

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