SNOSB29H November   2009  – May 2022 LMP8645 , LMP8645HV

PRODUCTION DATA  

  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Pin Configuration and Functions
  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 2.7-V Electrical Characteristics
    6. 6.6 5-V Electrical Characteristics
    7. 6.7 12-V Electrical Characteristics
    8. 6.8 Typical Characteristics
  7. Detailed Description
    1. 7.1 Overview
      1. 7.1.1 Theory of Operation
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Driving ADC
      2. 7.3.2 Applying Input Voltage With No Supply Voltage
    4. 7.4 Device Functional Modes
      1. 7.4.1 Selection of the Gain Resistor
      2. 7.4.2 Gain Range Limitations
        1. 7.4.2.1 Range 1: VCM is –2 V to 1.8 V
        2. 7.4.2.2 Range 2: VCM is 1.8 V to VS
        3. 7.4.2.3 Range 3: VCM is greater than VS
      3. 7.4.3 Selection of Sense Resistor
        1. 7.4.3.1 Resistor Power Rating and Thermal Issues
        2. 7.4.3.2 Using PCB Trace as a Sense Resistor
      4. 7.4.4 Sense Line Inputs
        1. 7.4.4.1 Effects of Series Resistance on Sense Lines
  8. Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Applications
      1. 8.2.1 Typical Current Monitor Application
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curves
      2. 8.2.2 High Brightness LED Driver
  9. Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Development Support
    2. 11.2 Documentation Support
      1. 11.2.1 Related Documentation
    3. 11.3 Receiving Notification of Documentation Updates
    4. 11.4 Support 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

Typical Characteristics

Unless otherwise specified: TA = 25°C, VS= V+– V, VSENSE= +IN – (–IN), RL = 10 MΩ.

GUID-AE7B4D55-BFD9-4107-AE1D-B247CECB218F-low.gifFigure 6-1 Supply Current vs. Supply Voltage
GUID-85429E08-5BA0-46E0-8FCC-E89F840B48CA-low.gifFigure 6-3 AC PSRR vs. Frequency
GUID-79006831-58EF-416A-A898-809D335AE1A6-low.gifFigure 6-5 Gain vs. Frequency
GUID-DC471DBA-2E5C-4EC5-A3E2-E0338D3D4597-low.gifFigure 6-7 Output Voltage vs. VSENSE
GUID-8E134401-55D0-4138-A4BE-3AA3F009F9DA-low.gifFigure 6-9 Large Step Response
GUID-7E8FFC2E-D3AE-4624-9202-775A18FC3769-low.gifFigure 6-11 Settling Time (Rise)
GUID-10A1DC3B-8CBF-4D71-8344-CCE99A25981D-low.gifFigure 6-13 Common-Mode Step Response (Rise)
GUID-81F09F5D-8677-4BDB-A493-B59C4D9FE6A1-low.gifFigure 6-2 Supply Current vs. VCM
GUID-0E9FADB7-1C75-49E4-979F-C1536184F8E5-low.gifFigure 6-4 AC CMRR vs. Frequency
GUID-ACD03D41-5640-4F61-8229-D09B970F7A7A-low.gifFigure 6-6 CMRR vs. VCM
GUID-1B393C12-A65D-4FCB-B810-C6EE3697E825-low.gifFigure 6-8 Output Voltage vs. VSENSE (ZOOM Close to 0 V)
GUID-72D35CDF-D00C-49D4-8CD0-5DAA95114540-low.gifFigure 6-10 Small Step Response
GUID-FFC05D87-9124-409A-9A6C-3FB7521D699E-low.gifFigure 6-12 Settling Time (Fall)
GUID-E4F14195-6B7E-489E-8D75-6FB6909F7E31-low.gifFigure 6-14 Common-Mode Step Response (Fall)