SNVSCV5 October   2025 TPS923621 , TPS923622

PRODUCTION DATA  

  1.   1
  2. Features
  3. Applications
  4. Description
  5. Device Comparison Table
  6. Pin Configuration and Functions
  7. 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
    6. 6.6 Typical Characteristics
  8. Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Enable and Start-up
      2. 7.3.2 Under-Voltage Lockout (UVLO)
      3. 7.3.3 Shutdown
      4. 7.3.4 Boost Control Operation
      5. 7.3.5 Switching Peak Current Limit
      6. 7.3.6 Over-Voltage Protection
      7. 7.3.7 Output Current Setting
      8. 7.3.8 Output Current PWM Controlled Analog Dimming
      9. 7.3.9 Thermal Shutdown
    4. 7.4 Device Functional Modes
      1. 7.4.1 Normal Operation Mode
      2. 7.4.2 Over-Voltage Protection Mode
      3. 7.4.3 Shutdown Mode
  9. Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Inductor Selection
        2. 8.2.2.2 Schottky Diode Selection
        3. 8.2.2.3 Output Capacitor Selection
        4. 8.2.2.4 LED Current Set Resistor
        5. 8.2.2.5 Thermal Considerations
      3. 8.2.3 Application Curves
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Example
  10. Device and Documentation Support
    1. 9.1 Device Support
    2. 9.2 Receiving Notification of Documentation Updates
    3. 9.3 Support Resources
    4. 9.4 Trademarks
    5. 9.5 Electrostatic Discharge Caution
    6. 9.6 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

Typical Characteristics

At TA = 25°C, unless otherwise noted.

TPS923621 TPS923622 Efficiency vs
            Dimming Dutycycle
TPS923621DRLR 10uH Inductor
3.6V Input Voltage 60mA IOUT at 100% Dutycycle
Figure 6-1 Efficiency vs Dimming Dutycycle
TPS923621 TPS923622 Efficiency vs Dimming Dutycycle
TPS923622DRVR 10uH Inductor
3.6V Input Voltage 120mA IOUT at 100% Dutycycle
Figure 6-3 Efficiency vs Dimming Dutycycle
TPS923621 TPS923622 Efficiency vs VIN
TPS923621DRLR 60mA IOUT 10uH Inductor
Figure 6-5 Efficiency vs VIN
TPS923621 TPS923622 FB vs Dimming
            Dutycycle 1%~100%
TPS923621DRLR 3.6V VIN 10uH Inductor
Figure 6-7 FB vs Dimming Dutycycle 1%~100%
TPS923621 TPS923622 FB vs Dimming Dutycycle 1%~100%
TPS923622DRVR 3.6V VIN 10uH Inductor
Figure 6-9 FB vs Dimming Dutycycle 1%~100%
TPS923621 TPS923622 Current Limit
            vs Temperature
TPS923621DRLR 3.6V VIN 10uH Inductor
Figure 6-11 Current Limit vs Temperature
TPS923621 TPS923622 Efficiency vs
            Dimming Dutycycle
TPS923621DRLR 10uH Inductor
5V Input Voltage 60mA IOUT at 100% Dutycycle
Figure 6-2 Efficiency vs Dimming Dutycycle
TPS923621 TPS923622 Efficiency vs Dimming Dutycycle
TPS923622DRVR 10uH Inductor
5V Input Voltage 120mA IOUT at 100% Dutycycle
Figure 6-4 Efficiency vs Dimming Dutycycle
TPS923621 TPS923622 FB vs
            VIN
TPS923621DRLR 60mA IOUT 10uH Inductor
Figure 6-6 FB vs VIN
TPS923621 TPS923622 FB vs Dimming
            Dutycycle 0.1%~10%
TPS923621DRLR 3.6V VIN 10uH Inductor
Figure 6-8 FB vs Dimming Dutycycle 0.1%~10%
TPS923621 TPS923622 FB vs Dimming Dutycycle 0.1%~10%
TPS923622DRVR 3.6V VIN 10uH Inductor
Figure 6-10 FB vs Dimming Dutycycle 0.1%~10%
TPS923621 TPS923622 Current Limit
            vs Temperature
TPS923622DRVR 3.6V VIN 10uH Inductor
Figure 6-12 Current Limit vs Temperature