SNVS323I December   2004  – February 2016 LP38690-ADJ , LP38692-ADJ

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 Foldback Current Limiting
    4. 7.4 Device Functional Modes
      1. 7.4.1 Enable Pin (LP38692-ADJ Only)
  8. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Reverse Voltage
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Setting The Output Voltage
        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 Selecting A Capacitor
            1. 8.2.2.2.3.1 Ceramic
            2. 8.2.2.2.3.2 Tantalum
        3. 8.2.2.3 RFI/EMI Susceptibility
        4. 8.2.2.4 Output Noise
        5. 8.2.2.5 Power Dissipation
        6. 8.2.2.6 Estimating Junction Temperature
      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 WSON Mounting
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Third-Party Products Disclaimer
    2. 11.2 Documentation Support
      1. 11.2.1 Related Documentation
    3. 11.3 Related Links
    4. 11.4 Community Resources
    5. 11.5 Trademarks
    6. 11.6 Electrostatic Discharge Caution
    7. 11.7 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

NDC Package (LP38692-ADJ only)
5-Pin SOT-223
Top View
LP38690-ADJ LP38692-ADJ 20126703.gif
NGG Package (LP38690-ADJ)
6-Pin WSON
Top View
LP38690-ADJ LP38692-ADJ 20126704.gif
NGG Package (LP38692-ADJ)
6-Pin WSON
Top View
LP38690-ADJ LP38692-ADJ 20126705.gif

Pin Functions

PIN I/O DESCRIPTION
LP38690-ADJ LP38692-ADJ
NAME WSON WSON SOT-223
ADJ 4 4 2 O The ADJ pin is used to set the regulated output voltage by connecting it to the external resistors R1 and R2 (see Simplified Schematic LP38690-ADJ and Simplified Schematic LP38692-ADJ).
DAP √ √ — — WSON only - The DAP (exposed pad) functions as a thermal connection when soldered to a copper plane. See Layout Guidelines for more information.
EN(1) — 3 1 I The EN pin allows the part to be turned to an ON or OFF state by pulling this pin high or low.
GND 2 2 5 — Circuit ground for the regulator. For the SOT-223 package this is thermally connected to the die and functions as a heat sink when the soldered down to a large copper plane.
IN 1, 6 1, 6 4 I This is the input supply voltage to the regulator. For WSON devices, both IN pins must be tied together for full current operation (250 mA maximum per pin).
NC(2) 3 — — — No internal connection.
OUT 5 5 3 I Regulated output voltage.
(1) The EN pin is only available on the LP38692-ADJ.
(2) Pin 3 on the LP38690-ADJ is not used.