SLVSHL8 November   2024 TPS923650

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
      2. 7.3.2 Setting LED Current
      3. 7.3.3 Internal Soft Start
      4. 7.3.4 Dimming Mode
        1. 7.3.4.1 PWM Dimming
        2. 7.3.4.2 Analog Dimming
      5. 7.3.5 Fault Protection
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 TPS923651D2 12V Input, 1A Output, 8-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 TPS923650D1 Buck-Boost, 24V Input, 0.5A 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
    1. 11.1 Package Option Addendum
    2. 11.2 Tape and Reel Information

Package Options

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

6.6 Typical Characteristics

VIN = 12V, LED count = 12, FSW = 400kHz, L = 33µH, unless otherwise specified

TPS923650 TPS923651 Output Current vs. Input VoltageFigure 6-1 Output Current vs. Input Voltage
TPS923650 TPS923651 D1 PWM Duty Cycle vs. CSP-CSN Voltage at 20kHz PWMFigure 6-3 D1 PWM Duty Cycle vs. CSP-CSN Voltage at 20kHz PWM
TPS923650 TPS923651 VIN UVLO Threshold vs. Junction TemperatureFigure 6-5 VIN UVLO Threshold vs. Junction Temperature
TPS923650 TPS923651 VIN Quiescent Current vs. Junction TemperatureFigure 6-7 VIN Quiescent Current vs. Junction Temperature
TPS923650 TPS923651 D1 Efficiency at 7V Input Voltage, 0.5A Output Current, 20kHz PWMFigure 6-9 D1 Efficiency at 7V Input Voltage, 0.5A Output Current, 20kHz PWM
TPS923650 TPS923651 D2 Efficiency at 7V Input Voltage, 0.5A Output CurrentFigure 6-11 D2 Efficiency at 7V Input Voltage, 0.5A Output Current
TPS923650 TPS923651 Output Current vs. LED CountFigure 6-2 Output Current vs. LED Count
TPS923650 TPS923651 D2 Analog Voltage vs. CSP-CSN VoltageFigure 6-4 D2 Analog Voltage vs. CSP-CSN Voltage
TPS923650 TPS923651 Internal LDO Output vs. Junction TemperatureFigure 6-6 Internal LDO Output vs. Junction Temperature
TPS923650 TPS923651 Switching FET Rdson vs. Junction TemperatureFigure 6-8 Switching FET Rdson vs. Junction Temperature
TPS923650 TPS923651 D1 Efficiency at 13V Input Voltage, 0.5A Output Current, 20kHz PWMFigure 6-10 D1 Efficiency at 13V Input Voltage, 0.5A Output Current, 20kHz PWM
TPS923650 TPS923651 D2 Efficiency at 13V Input Voltage, 0.5A Output CurrentFigure 6-12 D2 Efficiency at 13V Input Voltage, 0.5A Output Current