SLVSGH1B April   2023  – February 2025 TPS923652 , TPS923653 , TPS923654 , TPS923655

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Device Comparison Table
  6. 5 Pin Configuration and Functions
  7. 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
    6. 6.6 Typical Characteristics
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Adaptive Off-Time Current Mode Control
        1. 7.3.1.1 Switching Frequency Settings
        2. 7.3.1.2 Spread Spectrum
      2. 7.3.2 Setting LED Current
      3. 7.3.3 Undervoltage Lockout
      4. 7.3.4 Internal Soft Start
      5. 7.3.5 Dimming Mode
        1. 7.3.5.1 PWM Dimming
        2. 7.3.5.2 Analog Dimming
        3. 7.3.5.3 Hybrid Dimming
        4. 7.3.5.4 Flexible Dimming
      6. 7.3.6 CC/CV Charging Mode
      7. 7.3.7 Fault Protection
      8. 7.3.8 Thermal Foldback
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 TPS923654 Boost, 12V Input, 1A Output, 12-piece WLED Driver With Analog Dimming
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
          1. 8.2.1.2.1 Inductor Selection
          2. 8.2.1.2.2 Input Capacitor Selection
          3. 8.2.1.2.3 Output Capacitor Selection
          4. 8.2.1.2.4 Sense Resistor Selection
          5. 8.2.1.2.5 Other External Components Selection
        3. 8.2.1.3 Application Curves
      2. 8.2.2 TPS923654 Buck-Boost, 24V Input, 2A Output, 4-piece WLED Driver with PWM Dimming
        1. 8.2.2.1 Design Requirements
        2. 8.2.2.2 Detailed Design Procedure
          1. 8.2.2.2.1 Inductor Selection
          2. 8.2.2.2.2 Input Capacitor Selection
          3. 8.2.2.2.3 Output Capacitor Selection
          4. 8.2.2.2.4 Sense Resistor Selection
          5. 8.2.2.2.5 Other External Components Selection
        3. 8.2.2.3 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. 9 Device and Documentation Support
    1. 9.1 Receiving Notification of Documentation Updates
    2. 9.2 Support Resources
    3. 9.3 Trademarks
    4. 9.4 Electrostatic Discharge Caution
    5. 9.5 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

Package Options

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

8.2.2.3 Application Curves

TPS923652 TPS923653 TPS923654 TPS923655 LED Current Ripple at PWMADIM = 100%, 1kHz and FSW = 1.2MHz
Light Blue: SW, Orange: Inductor Current, Deep Blue: LED Current Ripple (AC)
Figure 8-13 LED Current Ripple at PWMADIM = 100%, 1kHz and FSW = 1.2MHz
TPS923652 TPS923653 TPS923654 TPS923655 LED+ Short-to-VIN Protection
Black: PWMPWM, Light Blue: SW, Red: FAULT, Orange: Inductor Current, Deep Blue: LED Current
Figure 8-15 LED+ Short-to-VIN Protection
TPS923652 TPS923653 TPS923654 TPS923655 LED Current Transient for a PWMPWM Transition from 1% to 99%, 1kHz
Black: PWMPWM, Light Blue: SW, Orange: Inductor Current, Deep Blue: LED Current
Figure 8-17 LED Current Transient for a PWMPWM Transition from 1% to 99%, 1kHz
TPS923652 TPS923653 TPS923654 TPS923655 Start-Up at PWMPWM = 100%, 1kHz
Black: PWMPWM, Light Blue: SW, Orange: Inductor Current, Deep Blue: LED Current
Figure 8-19 Start-Up at PWMPWM = 100%, 1kHz
TPS923652 TPS923653 TPS923654 TPS923655 Start-Up at PWMPWM = 10%, 1kHz
Black: PWMPWM, Light Blue: SW, Orange: Inductor Current, Deep Blue: LED Current
Figure 8-21 Start-Up at PWMPWM = 10%, 1kHz
TPS923652 TPS923653 TPS923654 TPS923655 LED PWM Dimming at PWMPWM = 99%, 1kHz
Black: PWMPWM, Light Blue: SW, Orange: Inductor Current, Deep Blue: LED Current
Figure 8-14 LED PWM Dimming at PWMPWM = 99%, 1kHz
TPS923652 TPS923653 TPS923654 TPS923655 LED PWM Dimming at PWMPWM = 1%, 1kHz
Black: PWMPWM, Light Blue: SW, Orange: Inductor Current, Deep Blue: LED Current
Figure 8-16 LED PWM Dimming at PWMPWM = 1%, 1kHz
TPS923652 TPS923653 TPS923654 TPS923655 LED Current Transient for a PWMPWM Transition from 99% to 1%, 1kHz
Black: PWMPWM, Light Blue: SW, Orange: Inductor Current, Deep Blue: LED Current
Figure 8-18 LED Current Transient for a PWMPWM Transition from 99% to 1%, 1kHz
TPS923652 TPS923653 TPS923654 TPS923655 Shutdown at PWMPWM = 100%, 1kHz
Black: PWMPWM, Light Blue: SW, Orange: Inductor Current, Deep Blue: LED Current
Figure 8-20 Shutdown at PWMPWM = 100%, 1kHz
TPS923652 TPS923653 TPS923654 TPS923655 Shutdown at PWMPWM = 10%, 1kHz
Black: PWMPWM, Light Blue: SW, Orange: Inductor Current, Deep Blue: LED Current
Figure 8-22 Shutdown at PWMPWM = 10%, 1kHz