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  • TPS92365x 65V 2A / 4A Boost / Buck-Boost LED Driver with Inductive Fast Dimming

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

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  • TPS92365x 65V 2A / 4A Boost / Buck-Boost LED Driver with Inductive Fast Dimming
  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
  13. IMPORTANT NOTICE

Package Options

Mechanical Data (Package|Pins)
  • DYY|14
    • MPSS114C
  • DMT|14
    • MPSS087B
  • DRR|12
    • MPSS085A
Thermal pad, mechanical data (Package|Pins)
  • DMT|14
    • QFND767
  • DRR|12
    • PPTD337
Orderable Information
  • slvsgh1b_oa
  • slvsgh1b_pm
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Data Sheet

TPS92365x 65V 2A / 4A Boost / Buck-Boost LED Driver with Inductive Fast Dimming

1 Features

  • 4.5V to 65V wide input range
  • LED common cathode connection
  • Integrated 150mΩ MOSFET with typical 3A / 6.5A / 8.5A current limit
  • Optional switching frequency: 100kHz to 2.2MHz
  • Spread spectrum for TPS923653 and TPS923655
  • Advanced dimming options:
    • Analog dimming (256:1)
    • Fast PWM dimming (150ns pulse width)
    • Hybrid and flexible dimming (2,000:1 at 20kHz PWM, 10,000:1 at 4kHz PWM, 1,000,000:1 at 120Hz PWM)
  • CC/CV charging mode
  • Full protection features:
    • LED open and short protection
    • Switching FET open and short protection
    • External component failure protection
    • Cycle-by-cycle current limit
    • Thermal shutdown
    • Fault output (open drain)
  • Configurable thermal foldback curve
  • VSON, WSON and SOT23 package options

2 Applications

  • Constant illumination:
    • Indoor, outdoor, professional lighting
    • Medical, surgical lighting
    • Projector, laser TV, printer, IP camera
  • Instant illumination:
    • Machine vision, camera flash
    • Fire alarm, strobe
  • CC and CV source:
    • LCD backlighting
    • Battery charging
    • TEC control
TPS923652 TPS923653 TPS923654 TPS923655 Simplified Schematic Simplified Schematic

 
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