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

8.2.3.1 Design Requirements

This next example is the same as the last example, except that the regulator is now a low-dropout regulator, the LP38501, as seen in Figure 32. For this example, we will let the open-loop current to be 1.25A and the close-loop current, ILIMIT, to be 1A.