SNVS251J May   2004  – September 2014 LP3990

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 Handling Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Output Capacitor, Recommended Specifications
    7. 6.7 Timing Requirements
    8. 6.8 Typical Performance Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Enable (EN)
      2. 7.3.2 Thermal Overload Protection (TSD)
    4. 7.4 Device Functional Modes
      1. 7.4.1 Enable (EN)
      2. 7.4.2 Minimum Operating Input Voltage (VIN)
  8. 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 Power Dissipation and Device Operation
        2. 8.2.2.2 External Capacitors
        3. 8.2.2.3 Input Capacitor
        4. 8.2.2.4 Output Capacitor
        5. 8.2.2.5 No-Load Stability
        6. 8.2.2.6 Capacitor Characteristics
        7. 8.2.2.7 Enable Control
      3. 8.2.3 Application Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Examples
    3. 10.3 DSBGA Mounting
    4. 10.4 DSBGA Light Sensitivity
  11. 11Device and Documentation Support
    1. 11.1 Trademarks
    2. 11.2 Electrostatic Discharge Caution
    3. 11.3 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

5 Pin Configuration and Functions

DSBGA (YZR)
4 Pins
connection_TL_snvs251.gif
SOT-23 (DBV)
5 Pins
connection_MF_snvs251.gif
WSON (NGG)
6 Pins
connection_SD_snvs251.gif

Pin Functions

PIN I/O DESCRIPTION
NAME DSBGA SOT-23 WSON
YZR DBV NGG
GND A1 2 2 — Common Ground.
EN A2 3 5 I Enable Input; Enables the Regulator when ≥ 0.95 V.
Disables the Regulator when ≤ 0.4 V.
Enable Input has 1-MΩ (typical) pull-down resistor to GND.
OUT B1 5 1 O Voltage output. A 1-µF Low ESR Capacitor should be connected to this Pin. Connect this output to the load circuit.
IN B2 1 6 I Voltage supply Input. A 1-µF capacitor should be connected at this input.
N/A 4 3 I No internal connection.
N/C N/A 4 I No internal connection.
N/C Pad — Thermal pad. Connect to Pin 2.