ZHCSMI7A December   2020  – May 2021 TPS92633-Q1

PRODUCTION DATA  

  1. 1 特性
  2. 2 应用
  3. 3 说明
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 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 Timing Requirements
    7. 6.7 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1  Power Supply (SUPPLY)
        1. 7.3.1.1 Power-On Reset
        2. 7.3.1.2 Supply Current in Fault Mode
      2. 7.3.2  Enable and Shutdown (EN)
      3. 7.3.3  Reference Current (IREF)
      4. 7.3.4  Constant-Current Output and Setting (INx)
      5. 7.3.5  Analog Current Control (ICTRL)
        1. 7.3.5.1 Off-Board Brightness Binning Resistor
        2. 7.3.5.2 NTC Resistor
      6. 7.3.6  Thermal Sharing Resistor (OUTx and RESx)
      7. 7.3.7  PWM Control (PWMx)
      8. 7.3.8  Supply Control
      9. 7.3.9  Diagnostics
        1. 7.3.9.1 IREF Short-to-GND Detection
        2. 7.3.9.2 IREF Open Detection
        3. 7.3.9.3 LED Short-to-GND Detection
        4. 7.3.9.4 LED Open-Circuit Detection
        5. 7.3.9.5 Single LED Short-Circuit Detection (SLS_REF)
        6. 7.3.9.6 LED Open-Circuit and Single LED Short-Circuit Detection Enable (DIAGEN)
        7. 7.3.9.7 Low Dropout Operation
        8. 7.3.9.8 Over-Temperature Protection
      10. 7.3.10 FAULT Bus Output With One-Fails–All-Fail
      11. 7.3.11 FAULT Table
      12. 7.3.12 LED Fault Summary
      13. 7.3.13 IO Pins Inner Connection
    4. 7.4 Device Functional Modes
      1. 7.4.1 Undervoltage Lockout, V(SUPPLY) < V(POR_rising)
      2. 7.4.2 Normal Operation V(SUPPLY) ≥ 4.5 V
      3. 7.4.3 Low-Voltage Dropout Operation
      4. 7.4.4 Fault Mode
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Applications
      1. 8.2.1 BCM Controlled Rear Lamp with One-Fails-All-Fail Setup
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curves
      2. 8.2.2 Independent PWM Controlled Rear Lamp with Off Board LED and Binning Resistor
        1. 8.2.2.1 Design Requirements
        2. 8.2.2.2 Detailed Design Procedure
        3. 8.2.2.3 Application Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 接收文档更新通知
    2. 11.2 支持资源
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

5 Pin Configuration and Functions

Figure 5-1 PWP Package 20-Pin HTSSOP With PowerPAD™ Package Top View
Table 5-1 Pin Functions
PIN I/O DESCRIPTION
NAME NO.
SUPPLY 1 I Device power supply.
EN 2 I Device enable pin.
IN1 3 I Current input for channel 1.
IN2 4 I Current input for channel 2.
IN3 5 I Current input for channel 3.
DIAGEN 6 I Enable pin for LED open-circuit detection and single LED short detection to avoid false open and single LED short diagnostics during low-dropout operation.
PWM1 7 I PWM input for OUT1 and RES1 current output ON/OFF control.
PWM2 8 I PWM input for OUT2 and RES2 current output ON/OFF control.
PWM3 9 I PWM input for OUT3 and RES3 current output ON/OFF control.
FAULT 10 I/O Fault output, support one-fails–all-fail fault bus.
ICTRL 11 O Resistor programmable voltage reference pin for LED binning resistor or NTC resistor.
SLS_REF 12 O Resistor programmable voltage reference pin for single LED short threshold.
IREF 13 O Current reference pin. A 12.3-kΩ resistor is recommended to be connected between IREF pin and ground.
GND 14 — Ground.
OUT3 15 O Current output for channel 3. A 10-nF capacitor is recommended between the pin to GND.
RES3 16 O Current output for channel 3 with external thermal resistor.
OUT2 17 O Current output for channel 2. A 10-nF capactitor is recommended between the pin to GND.
RES2 18 O Current output for channel 2 with external thermal resistor.
OUT1 19 O Current output for channel 1. A 10-nF capacitor is recommended between the pin to GND.
RES1 20 O Current output for channel 1 with external thermal resistor.
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