SBVS199C June   2012  – January 2024 TLC59283

PRODUCTION DATA  

  1.   1
  2. Features
  3. Applications
  4. Description
  5. Pin Configurations
  6. Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 Storage Conditions
    3. 5.3 ESD Ratings
    4. 5.4 Recommended Operating Conditions
    5. 5.5 Thermal Information
    6. 5.6 Electrical Characteristics
    7. 5.7 Timing Characteristics
    8. 5.8 Timing Diagrams
    9. 5.9 Typical Characteristics
  7. Parameter Measurement Information
    1. 6.1 Pin-equivalent Input and Output Schematic Diagrams
    2. 6.2 Test Circuits
  8. Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Constant Sink Current Value Setting
      2. 7.3.2 Constant-current Driver On or Off Control
      3. 7.3.3 Noise Reduction
        1. 7.3.3.1 Internal Pre-Charge FET
        2. 7.3.3.2 Improve Output Control Loop Stability
  9. Register Configuration
  10. Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
      3. 9.2.3 Application Performance Plots
    3. 9.3 Power Supply Recommendations
    4. 9.4 Layout
      1. 9.4.1 Layout Guidelines
      2. 9.4.2 Layout Example
  11. 10Device and Documentation Support
    1. 10.1 Third-Party Products Disclaimer
    2. 10.2 Documentation Support
      1. 10.2.1 Related Documentation
    3. 10.3 Receiving Notification of Documentation Updates
    4. 10.4 Support Resources
    5. 10.5 Trademarks
    6. 10.6 Electrostatic Discharge Caution
    7. 10.7 Glossary
  12. 11Revision History
  13. 12Mechanical, Packaging, and Orderable Information

Package Options

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

Constant Sink Current Value Setting

The constant-current values are determined by an external resistor (RIREF) placed between IREF and GND. The resistor (RIREF) value is calculated by Equation 1.

Equation 1. GUID-DCEAEAF0-7267-4E74-A8B9-0BFE6BE466CA-low.gif

Where:

VIREF = the internal reference voltage on the IREF pin (typically 1.208V)

IOLC must be set in the range of 2mA to 35mA when VCC is less than 3.6V. Also, when VCC is equal to 3.6V or greater, IOLC must be set in the range of 2mA to 45mA. The constant sink current characteristic for the external resistor value is illustrated in Figure 5-4. Table 7-1 describes the constant-current output versus external resistor value.

Table 7-1 Constant-current Output Versus External Resistor Value
IOLC (mA)RIREF (kΩ, Typical)
45 (VCC > 3.6V only)1.18
40 (VCC > 3.6V only)1.32
351.51
301.76
252.12
202.65
153.53
105.29
510.6
226.5