SNVS002E January   1999  – October 2014 LM2662 , LM2663

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 Typical Performance Characteristics
  7. 7 Parameter Measurement Information
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Changing Oscillator Frequency
    4. 8.4 Device Functional Modes
      1. 8.4.1 Shutdown Mode
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Applications
      1. 9.2.1 Simple Negative Voltage Converter
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
          1. 9.2.1.2.1 Paralleling Devices
          2. 9.2.1.2.2 Cascading Devices
          3. 9.2.1.2.3 Regulating VOUT
        3. 9.2.1.3 Application Curves
      2. 9.2.2 Positive Voltage Doubler
        1. 9.2.2.1 Design Requirements
        2. 9.2.2.2 Detailed Design Procedure
        3. 9.2.2.3 Application Curves
      3. 9.2.3 Splitting VIN in Half
        1. 9.2.3.1 Design Requirements
        2. 9.2.3.2 Detailed Design Procedure
        3. 9.2.3.3 Application Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Device Support
      1. 12.1.1 Third-Party Products Disclaimer
    2. 12.2 Related Links
    3. 12.3 Trademarks
    4. 12.4 Electrostatic Discharge Caution
    5. 12.5 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

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

5 Pin Configuration and Functions

LM2662 SOIC (D)
8 Pins
Top View
10000320.png
LM2663 SOIC (D)
8 Pins
Top View
10000321.png

Pin Functions

PIN TYPE DESCRIPTION
NUMBER NAME VOLTAGE INVERTER VOLTAGE DOUBLER
1 FC Frequency control for internal oscillator: Same as inverter.
(LM2662) Input FC = open, ƒOSC = 20 kHz (typ);
FC = V+, ƒOSC = 150 kHz (typ);
FC has no effect when OSC pin is driven externally.
1 SD
(LM2663)		 Input Shutdown control pin, tie this pin to the ground in normal operation. Same as inverter.
2 CAP+ Power Connect this pin to the positive terminal of charge-pump capacitor. Same as inverter.
3 GND Ground Power supply ground input. Power supply positive voltage input.
4 CAP− Power Connect this pin to the negative terminal of charge-pump capacitor. Same as inverter.
5 OUT Power Negative voltage output. Power supply ground input.
6 LV Input Low-voltage operation input. Tie LV to GND when input voltage is less than 3.5 V. Above 3.5 V, LV can be connected to GND or left open. When driving OSC with an external clock, LV must be connected to GND. LV must be tied to OUT.
7 OSC Input Oscillator control input. OSC is connected to an internal 15-pF capacitor. An external capacitor can be connected to slow the oscillator. Also, an external clock can be used to drive OSC. Same as inverter except that OSC cannot be driven by an external clock.
8 V+ Power Input Power supply positive voltage input. Positive voltage output.