JAJSR45 august   2023 TPS92621-Q1

PRODUCTION DATA  

  1.   1
  2. 1 特長
  3. 2 アプリケーション
  4. 3 概要
  5. 4 Revision History
  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  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(EN)
      3. 7.3.3  Constant-Current Output and Setting (IN)
      4. 7.3.4  Thermal Sharing Resistor (OUT and RES)
      5. 7.3.5  PWM Control (PWM)
      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
  9. 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
    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 ドキュメントの更新通知を受け取る方法
    2. 9.2 サポート・リソース
    3. 9.3 Trademarks
    4. 9.4 静電気放電に関する注意事項
    5. 9.5 用語集
  11. 10Mechanical, Packaging, and Orderable Information

パッケージ・オプション

メカニカル・データ（パッケージ｜ピン）
サーマルパッド・メカニカル・データ
発注情報

7.3.9 FAULT Table

Table 7-1 Fault Table With DIAGEN = HIGH (Full Function)
FAULT BUS STATUSFAULT TYPEDETECTION MECHANISMCONTROL INPUTDEGLITCH TIMEFAULT BUSFAULT HANDLING ROUTINEFAULT RECOVERY
FAULT = HOpen circuit or short-to-supplyV(IN) – V(OUT) < V(OPEN_th_rising)EN = H and PWM = Ht(OPEN_deg)Constant-current pulldownDevice turns output off and retries with constant current I(retry), ignoring the PWM input.Auto recovery
Short-to-groundV(OUT) < V(SG_th_falling)
OR
V(RES) < V(SG_th_falling)		EN = H and PWM = Ht(SG_deg)Constant-current pulldownDevice turns output off and retries with constant current I(retry), ignoring the PWM input.Auto recovery
OvertemperatureTJ > T(TSD)EN = H t(TSD_deg)Constant-current pulldownDevice turns output channel off.Auto recovery
FAULT = LFault is detectedDevice turns channel off and keeps retry. After the Fault pin is released, output channel is turned on after t(FAULT_recovery) time.
No fault is detectedDevice turns output channel off.
Table 7-2 Fault Table With DIAGEN = LOW (Full Function)
FAULT BUS STATUSFAULT TYPEDETECTION MECHANISMCURRENT OUTPUTDEGLITCH TIMEFAULT BUSFAULT HANDLING ROUTINEFAULT RECOVERY
FAULT = HOpen circuit or short-to-supplyIgnored
Short-to-groundV(OUT) < V(SG_th_falling)
OR
V(RES) < V(SG_th_falling)		EN = H and PWM = Ht(SG_deg)Constant-current pulldownDevice turns output off and retries with constant current I(retry), ignoring the PWM input.Auto recovery
OvertemperatureTJ > T(TSD)EN = Ht(TSD_deg)Constant-current pulldownDevice turns output channel off.Auto recovery
FAULT = LFault is detectedDevice turns channel off and keeps retry. After the Fault pin is released, output channel is turned on after t(FAULT_recovery) time.
No fault is detectedDevice turns output channel off.