SNVS032E February   2000  – January 2016 LM2651

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 Diagram
    3. 7.3 Feature Description
    4. 7.4 Device Functional Modes
  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 Input Capacitor
        2. 8.2.2.2 Inductor
        3. 8.2.2.3 Output Capacitor
        4. 8.2.2.4 Boost Capacitor
        5. 8.2.2.5 Soft-Start Capacitor
        6. 8.2.2.6 R1 and R2 (Programming Output Voltage)
        7. 8.2.2.7 Compensation Components
        8. 8.2.2.8 External Schottky Diode
      3. 8.2.3 Application Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Community Resources
    2. 11.2 Trademarks
    3. 11.3 Electrostatic Discharge Caution
    4. 11.4 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

PW Package
16-Pin TSSOP
Top View
LM2651 10092502.gif

Pin Functions

PIN TYPE(1) DESCRIPTION
NO. NAME
1, 2 SW O Switched-node connection, which is connected with the source of the internal high-side MOSFET.
3 to 5 VIN I Main power supply pin
6 VCB I Bootstrap capacitor connection for high-side gate drive
7 AVIN I Input supply voltage for control and driver circuits
8 SD(SS) I Shutdown and soft-start control pin. Pulling this pin below 0.3 V shuts off the regulator. A capacitor connected from this pin to ground provides a control ramp of the input current. Do not drive this pin with an external source or erroneous operation may result.
9 FB I Output voltage feedback input. Connected to the output voltage.
10 COMP I Compensation network connection. Connected to the output of the voltage error amplifier.
11 NC G No internal connection
12 to 13 AGND G Low-noise analog ground
14 to 16 PGND G Power ground
(1) I = Input, O = Output, and G = Ground