SNOSC63B February   2012  – December 2014 LMP8646

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Device Images
      1.      Typical Application
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
    1.     Pin 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: 2.7 V
    6. 6.6 Electrical Characteristics: 5 V
    7. 6.7 Electrical Characteristics: 12 V
    8. 6.8 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Theory of Operation
        1. 7.3.1.1 Maximum Output Voltage, VOUT_MAX
          1. 7.3.1.1.1 Case 1: −2 V < VCM < 1.8 V, and VS > 2.7 V
          2. 7.3.1.1.2 Case 2: 1.8 V < VCM < VS, and VS > 3.3 V
          3. 7.3.1.1.3 Case 3: VCM > VS, and VS > 2.7 V
    4. 7.4 Device Functional Modes
      1. 7.4.1 Output Accuracy
      2. 7.4.2 Selection of the Sense Resistor, RSENSE
        1. 7.4.2.1 RSENSE Consideration for System Error
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Applications
      1. 8.2.1 Application #1: Current Limiter With a Capacitive Load
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curve
      2. 8.2.2 Application #2: Current Limiter With a Resistive Load
        1. 8.2.2.1 Design Requirements
        2. 8.2.2.2 Detailed Design Procedure
        3. 8.2.2.3 Application Curve
      3. 8.2.3 Application #3: Current Limiter With a Low-Dropout Regulator and Resistive Load
        1. 8.2.3.1 Design Requirements
        2. 8.2.3.2 Detailed Design Procedure
        3. 8.2.3.3 Application Curve
  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 Trademarks
    2. 11.2 Electrostatic Discharge Caution
    3. 11.3 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

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

6.8 Typical Characteristics

Unless otherwise specified: TA = 25°C, VS= V+ - V-, VSENSE= +IN - (-IN), RL = 10 kΩ.
LMP8646 30123562.gifFigure 1. Supply Curent vs. Supply Voltage for VCM = 2 V
LMP8646 30123512.gifFigure 3. AC PSRR vs. Frequency
LMP8646 30123596.gifFigure 5. CMRR vs. High VCM
LMP8646 30123537.gifFigure 7. Gain vs. Frequency (BW = 35 kHz)
LMP8646 30123579.gifFigure 9. Gain Accuracy vs. VCM
LMP8646 30123573.gifFigure 11. VOUT_MAX vs. Gain at Vs = 2.7 V
LMP8646 30123575.gifFigure 13. VOUT_MAX vs. Gain at Vs = 12 V
LMP8646 30123577.gifFigure 15. VOUT_MAX vs. VS at VCM = 2.1 V
LMP8646 30123544.gifFigure 17. Large Step Response at BW = 35 kHz
LMP8646 30123546.gifFigure 19. Small Step Response at BW = 35 kHz
LMP8646 30123548.gifFigure 21. Settling Time (Fall) at 1 kHz
LMP8646 30123550.gifFigure 23. Settling Time (Fall) at 35 kHz
LMP8646 30123552.gifFigure 25. Common-Mode Step Response (Fall) at 35 kHz
LMP8646 30123564.gifFigure 2. Supply Current vs. VCM
LMP8646 30123513.gifFigure 4. AC CMRR vs. Frequency
LMP8646 30123536.gifFigure 6. Gain vs. Frequency (BW = 1kHz)
LMP8646 30123578.gifFigure 8. Gain Accuracy vs. VCM
LMP8646 30123561.gifFigure 10. VOUT vs. VSENSE
LMP8646 30123574.gifFigure 12. VOUT_MAX vs. Gain at Vs = 5.0 V
LMP8646 30123576.gifFigure 14. VOUT_MAX vs. VS at VCM = –2 V
LMP8646 30123543.gifFigure 16. Large Step Response at BW = 1kHz
LMP8646 30123545.gifFigure 18. Small Step Response at BW = 1 kHz
LMP8646 30123547.gifFigure 20. Settling Time (Rise) at 1 kHz
LMP8646 30123549.gifFigure 22. Settling Time (Rise) at 35 kHz
LMP8646 30123551.gifFigure 24. Common-Mode Step Response (Rise) at 35 kHz