SLVSGW5A November   2022  – January 2024 TPS92620-Q1

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1  Power Supply (SUPPLY)
        1. 6.3.1.1 Power-On Reset (POR)
        2. 6.3.1.2 Suppply Current in Fault Mode
      2. 6.3.2  Enable and Shutdow(EN)
      3. 6.3.3  Constant-Current Output and Setting (INx)
      4. 6.3.4  Thermal Sharing Resistor (OUTx and RESx)
      5. 6.3.5  PWM Control (PWMx)
      6. 6.3.6  Supply Control
      7. 6.3.7  Diagnostics
        1. 6.3.7.1 LED Short-to-GND Detection
        2. 6.3.7.2 LED Open-Circuit Detection
        3. 6.3.7.3 LED Open-Circuit Detection Enable (DIAGEN)
        4. 6.3.7.4 Overtemperature Protection
        5. 6.3.7.5 Low Dropout Operation
      8. 6.3.8  FAULT Bus Output With One-Fails-All-Fail
      9. 6.3.9  FAULT Table
      10. 6.3.10 LED Fault Summary
      11. 6.3.11 IO Pins Inner Connection
    4. 6.4 Device Functional Modes
      1. 6.4.1 Undervoltage Lockout, V(SUPPLY) < V(POR_rising)
      2. 6.4.2 Normal Operation V(SUPPLY) ≥ 4.5V
      3. 6.4.3 Low-Voltage Dropout Operation
      4. 6.4.4 Fault Mode
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Applications
      1. 7.2.1 BCM Controlled Rear Lamp With One-Fails-All-Fail Setup
        1. 7.2.1.1 Design Requirements
        2. 7.2.1.2 Detailed Design Procedure
        3. 7.2.1.3 Application Curves
      2. 7.2.2 Independent PWM Controlled Rear Lamp By MCU
        1. 7.2.2.1 Design Requirements
        2. 7.2.2.2 Detailed Design Procedure
        3. 7.2.2.3 Application Curves
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Receiving Notification of Documentation Updates
    2. 8.2 Support Resources
    3. 8.3 Trademarks
    4. 8.4 Electrostatic Discharge Caution
    5. 8.5 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

Package Options

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

3 Description

The TPS92620-Q1 two-channel LED driver includes an unique thermal management design to reduce temperature rising on the device. The TPS92620-Q1 is a linear driver directly powered by automotive batteries with large voltage variations to output full current loads up to 250mA per channel. External shunt resistors are leveraged to share output current and dissipate power out of the driver. The device full-diagnostic capabilities include LED open, LED short-to-GND circuit, and device overtemperature protection.

The one-fails–all-fail feature of TPS92620-Q1 can work together with other LED drivers, such as the TPS9261x-Q1, TPS9262x-Q1, TPS9263x-Q1, and TPS92830-Q1 devices, to address different requirements.

Package Information
PART NUMBER PACKAGE(1) BODY SIZE (NOM)
TPS92620-Q1 DGN (HVSSOP, 12) 3.00mm × 4.00mm
DRR (WSON, 12) 3.00mm × 3.00mm
(1) For all available packages, see the orderable addendum at the end of the data sheet.
GUID-20221028-SS0I-7TLX-VDVF-NQW7SVMLSM0D-low.svg Power Dissipation on Device