SNVS225H February   2003  – June 2015 LP3871 , LP3874

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 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
    6. 6.6 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagrams
    3. 7.3 Feature Description
      1. 7.3.1 Shutdown (SD)
      2. 7.3.2 Short-Circuit Protection
      3. 7.3.3 Low Dropout Voltage
      4. 7.3.4 SENSE Pin
    4. 7.4 Device Functional Modes
      1. 7.4.1 Shutdown Mode
      2. 7.4.2 Active Mode
      3. 7.4.3 ERROR Flag Operation
  8. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Reverse Current Path
      2. 8.1.2 Turnon Characteristics for Output Voltages Programmed To 2 V or Below
    2. 8.2 Typical Applications
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 External Capacitors
        2. 8.2.2.2 Selecting a Capacitor
        3. 8.2.2.3 Capacitor Characteristics
          1. 8.2.2.3.1 Ceramic
          2. 8.2.2.3.2 Tantalum
          3. 8.2.2.3.3 Aluminum
        4. 8.2.2.4 RFI/EMI Susceptibility
        5. 8.2.2.5 Output Noise
      3. 8.2.3 Application Curves
  9. 9 Power Supply Recommendations
    1. 9.1 Power Dissipation
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Examples
  11. 11Device and Documentation Support
    1. 11.1 Related Links
    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

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5 Pin Configuration and Functions

KTT Package
5-Pin DDPAK/TO-263
Top View
LP3871 LP3874 20063106.gif
NC Package
5-Pin SOT-223
Top View
LP3871 LP3874 20063190.gif

Pin Functions

PIN TYPE DESCRIPTION
NAME LP3871 LP3874
SOT-223 DDPAK/TO-263 SOT-223 DDPAK/TO-263
ERROR 4 5 — — O ERROR Flag
GND 5 3 5 3 GND Ground
IN 2 2 2 2 I Input voltage
OUT 3 4 3 4 O Output voltage
SD 1 1 1 1 I Shutdown
SENSE — — 4 5 I Remote voltage sense