SLUUCT0B May   2023  – August 2025 TPS923652 , TPS923653 , TPS923654 , TPS923655

PRODUCTION DATA  

  1.   1
  2.   Description
  3.   Get Started
  4.   Features
  5.   Applications
  6. 1 Introduction
  7. 2 Warnings and Cautions
  8. 3 Description
    1. 3.1 Typical Applications
  9. 4 Test Setup
    1. 4.1 Connector Description
    2. 4.2 Input/Output Connection
  10. 5 Typical Characteristics Curves and Waveforms
    1. 5.1 Efficiency
    2. 5.2 Line Regulation
    3. 5.3 Load Regulation
    4. 5.4 Analog Dimming Performance
    5. 5.5 PWM Dimming Performance
    6. 5.6 Hybrid Dimming Performance
    7. 5.7 Flexible Dimming Performance
  11. 6 Schematic
  12. 7 Layout
  13. 8 Bill of Materials
  14. 9 Additional Information
    1.     Trademarks
  15. 10Revision History

5.3 Load Regulation

Figure 5-4 shows the LED current deviation vs. the number of LEDs in series in analog dimming mode. Input voltage VIN is set at 24V. LED current is set at 0.5A and 2A with analog dimming. White LEDs are used as load. The number of LEDs in series is 10, 11, 12, 13, 14, 15, and 16, respectively. The frequency of the input PWM signal at the ADIM/HD pin is 20kHz.

Figure 5-5 shows the LED current deviation vs. the number of LEDs in series in PWM dimming mode. Input voltage VIN is set at 24V. LED current is set at 0.5A and 2A with PWM dimming. White LEDs are used as load. The number of LEDs in series is 10, 11, 12, 13, 14, 15, and 16, respectively. The frequency of the input PWM signal at the PWM/EN pin is 20kHz.

TPS92365x LED Current Deviation vs. Number of LEDs in Series in Analog Dimming ModeFigure 5-4 LED Current Deviation vs. Number of LEDs in Series in Analog Dimming Mode
TPS92365x LED Current Deviation vs. Number of LEDs in Series in PWM Dimming ModeFigure 5-5 LED Current Deviation vs. Number of LEDs in Series in PWM Dimming Mode