SNVS322M December   2004  – December 2015 LP38690 , LP38692

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 Enable (EN)
      2. 7.3.2 Thermal Shutdown Protection (TSD)
      3. 7.3.3 Foldback Current Limiting
    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
      1. 8.1.1 Reverse Voltage
    2. 8.2 Typical Applications
      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
          1. 8.2.2.2.1 Input Capacitor
          2. 8.2.2.2.2 Output Capacitor
          3. 8.2.2.2.3 No Load Stability
          4. 8.2.2.2.4 Capacitor Characteristics
      3. 8.2.3 Application Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 PCB Layout
    2. 10.2 Layout Examples
    3. 10.3 WSON Mounting
    4. 10.4 RFI/EMI Susceptibility
    5. 10.5 Output Noise
  11. 11Device and Documentation Support
    1. 11.1 Documentation Support
      1. 11.1.1 Related Documentation
    2. 11.2 Related Links
    3. 11.3 Community Resources
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 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

LP38690 TO-252 (NDP)
3 Pins
Top View
LP38690 LP38692 20126603.png
LP38690 WSON (NGG)
6 Pins
Top View
LP38690 LP38692 20126605.gif
LP38690/92 SOT-223 (NDC)
5 Pins
Top View
LP38690 LP38692 20126604.gif
LP38692 WSON (NGG)
6 Pins
Top View
LP38690 LP38692 20126605_38692.gif

Pin Functions

PIN TYPE DESCRIPTION
NAME LP38690 LP38692
TO-252 WSON SOT-223 WSON
EN — — 1 3 I The Enable (EN) pin allows the part to be turned ON and OFF by pulling this pin HIGH or LOW.
GND TAB 2 5 2 — Circuit ground for the regulator. For the TO-252 and SOT-223 packages this is thermally connected to the die and functions as a heat sink when soldered down to a large copper plane.
IN 3 1, 6 4 1, 6 I This is the input supply voltage to the regulator. For WSON devices, both IN pins must be tied together for full current operation (500 mA maximum per pin).
OUT 1 4 3 4 O Regulated output voltage.
SNS — 5 — 5 I WSON only - Output sense pin allows remote sensing at the load which eliminates the error in output voltage due to voltage drops caused by the resistance in the traces between the regulator and the load. This pin must be tied to VOUT.
DAP — X — X — WSON only - The DAP (Exposed Pad) functions as a thermal connection when soldered to a copper plane. See WSON Mounting section in Layout for more information.