SNOS773N March   2000  – April 2016 LP2981-N

PRODUCTION DATA.  

  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Pin Configuration and Functions
  6. Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
  7. Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Multiple Voltage Options
      2. 7.3.2 High-Accuracy Output Voltage
      3. 7.3.3 Ultra-Low-Dropout Voltage
      4. 7.3.4 Low Ground Current
      5. 7.3.5 Sleep Mode
      6. 7.3.6 Short-Circuit Protection (Current Limit)
      7. 7.3.7 Thermal Protection
    4. 7.4 Device Functional Modes
      1. 7.4.1 Operation with VOUT(TARGET) + 1 V ≤ VIN < 16 V
      2. 7.4.2 Operation With ON/OFF Control
  8. Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 External Capacitors
          1. 8.2.2.1.1 Input Capacitor
          2. 8.2.2.1.2 Output Capacitor
        2. 8.2.2.2 Capacitor Characteristics
          1. 8.2.2.2.1 Tantalum
          2. 8.2.2.2.2 Ceramic
          3. 8.2.2.2.3 Aluminum
        3. 8.2.2.3 Reverse Current Path
        4. 8.2.2.4 ON and OFF Input Operation
      3. 8.2.3 Application Curves
  9. Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Third-Party Products Disclaimer
    2. 11.2 Community Resources
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

パッケージ・オプション

メカニカル・データ(パッケージ|ピン)
サーマルパッド・メカニカル・データ

1 Features

  • Operating Input Voltage Range: 2.1 V to 16 V
  • Ultralow-Dropout Voltage
  • Output Voltage Accuracy 0.75% (A Grade)
  • Specified 100-mA Output Current
  • < 1-μA Quiescent Current when Shutdown
  • Low Ground Pin Current at All Load Currents
  • High Peak Current Capability (300 mA Typical)
  • Wide Supply Voltage Range (16 V Maximum)
  • Fast Dynamic Response to Line and Load
  • Low ZOUT Over Wide Frequency Range
  • Overtemperature and Overcurrent Protection
  • −40°C to 125°C Junction Temperature Range

2 Applications

  • Cellular Phones
  • Palmtop and Laptop Computers
  • Personal Digital Assistants (PDA)
  • Camcorders, Personal Stereos, Cameras

3 Description

The LP2981-N is a 100-mA, fixed-output voltage regulator designed specifically to meet the requirements of battery-powered applications.

Using an optimized Vertically Integrated PNP (VIP) process, the LP2981-N delivers unequaled performance in all specifications critical to battery-powered designs:

Dropout Voltage: Typically 200 mV at 100-mA load, and 7 mV at 1-mA load.

Ground Pin Current: Typically 600 μA at 100-mA load, and 80 μA at 1-mA load.

Sleep Mode: Less than 1-μA quiescent current when ON/OFF pin is pulled low.

Precision Output: 0.75% tolerance output voltages available (A grade).

Assorted voltage options, from 2.5 V to 5 V, are available as standard products.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
LP2981-N SOT-23 (5) 2.90 mm × 1.60 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

Typical Application

LP2981-N simpschem_SNOS773.gif