ZHCSP77A December   2021  – March 2022 TPS92624-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 (POR)
        2. 7.3.1.2 Suppply Current in Fault Mode
      2. 7.3.2  Enable and Shutdown
      3. 7.3.3  Constant-Current Output and Setting (INx)
      4. 7.3.4  Thermal Sharing Resistor (OUTx and RESx)
      5. 7.3.5  PWM Control (PWMx)
      6. 7.3.6  Supply Control
      7. 7.3.7  Diagnostics
        1. 7.3.7.1 LED Short-to-GND Detection
        2. 7.3.7.2 LED Open-Circuit Detection
        3. 7.3.7.3 LED Open-Circuit Detection Enable (DIAGEN)
        4. 7.3.7.4 Overtemperature Protection
        5. 7.3.7.5 Low Dropout Operation
      8. 7.3.8  FAULT Bus Output With One-Fails-All-Fail
      9. 7.3.9  FAULT Table
      10. 7.3.10 LED Fault Summary
      11. 7.3.11 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 By MCU
        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 术语表
  12. 12Mechanical, Packaging, and Orderable Information

5 Pin Configuration and Functions

GUID-20201207-CA0I-1FGP-PZBF-WTLNPD37LTKK-low.gif Figure 5-1 PWP Package 20-Pin HTSSOP With PowerPAD™ Top View
Table 5-1 Pin Functions
PIN I/O DESCRIPTION
NAME NO.
SUPPLY 1 I Device power supply
IN1 2 I Current input for channel 1
IN2 3 I Current input for channel 2
IN3 4 I Current input for channel 3
IN4 5 I Current input for channel 4
DIAGEN 6 I Enable pin for LED open-circuit detection to avoid false open diagnostics during low-dropout operation
PWM1 7 I PWM input for OUT1 and RES1 current output ON and OFF control
PWM2 8 I PWM input for OUT2 and RES2 current output ON and OFF control
PWM3 9 I PWM input for OUT3 and RES3 current output ON and OFF control
PWM4 10 I PWM input for OUT4 and RES4 current output ON and OFF control
FAULT 11 I/O Fault output, support one-fails–all-fail fault bus
GND 12 — Ground
OUT4 13 O Current output for channel 4
RES4 14 O Current output for channel 4 with external thermal resistor
OUT3 15 O Current output for channel 3
RES3 16 O Current output for channel 3 with external thermal resistor
OUT2 17 O Current output for channel 2
RES2 18 O Current output for channel 2 with external thermal resistor
OUT1 19 O Current output for channel 1
RES1 20 O Current output for channel 1 with external thermal resistor