SNVS506J May   2008  – December 2015 LM3691

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Voltage Options
  6. 6 Pin Configuration and Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Circuit Operation
      2. 8.3.2 PWM Operation
        1. 8.3.2.1 Internal Synchronous Rectification
        2. 8.3.2.2 Current Limiting
      3. 8.3.3 ECO Operation
      4. 8.3.4 Soft-Start
      5. 8.3.5 Thermal Shutdown Protection
      6. 8.3.6 Overtemperature Maximum Load
    4. 8.4 Device Functional Modes
      1. 8.4.1 Forced PWM Mode
      2. 8.4.2 Shutdown Mode
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 Inductor Selection
        2. 9.2.2.2 Input Capacitor Selection
        3. 9.2.2.3 Output Capacitor Selection
      3. 9.2.3 Application Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
    3. 11.3 DSBGA Package Assembly and Use
  12. 12Device and Documentation Support
    1. 12.1 Device Support
      1. 12.1.1 Third-Party Products Disclaimer
    2. 12.2 Documentation Support
      1. 12.2.1 Related Documentation
    3. 12.3 Community Resources
    4. 12.4 Trademarks
    5. 12.5 Electrostatic Discharge Caution
    6. 12.6 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

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

6 Pin Configuration and Functions

YZR Package
6-Pin DSBGA
Top View
LM3691 top_snvs506.gif
YZR Package
6-Pin DSBGA
Bottom View
LM3691 bottom_snvs506.gif

Pin Functions

PIN TYPE(1) DESCRIPTION
NO. NAME
A1 EN I EN pin. The device is in shutdown mode when voltage to this pin is < 0.4 V and enabled when
> 1.2 V. Do not leave this pin floating
A2 VIN P Power supply input. Connect to the input filter capacitor. (See Typical Application Circuit.)
B1 MODE I MODE pin: Mode = 1, forced PWM; mode = 0, ECO
Do not leave this pin floating.
B2 SW A Switching node connection to the internal PFET switch and NFET synchronous rectifier.
C1 FB A Feedback analog input. Connect directly to the output filter capacitor.
(See Typical Application Circuit.)
C2 GND G Ground pin.
(1) A: Analog Pin, D: Digital Pin, G: Ground Pin, P: Power Pin, I: Input Pin, I/O; Input/Output, O: Output Pin