ZHCSMI7A
December 2020 – May 2021
TPS92633-Q1
PRODUCTION DATA
1
特性
2
应用
3
说明
4
Revision History
5
Pin Configuration and Functions
6
Specifications
6.1
Absolute Maximum Ratings
6.2
ESD Ratings
6.3
Recommended Operating Conditions
6.4
Thermal Information
6.5
Electrical Characteristics
6.6
Timing Requirements
6.7
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Power Supply (SUPPLY)
7.3.1.1
Power-On Reset
7.3.1.2
Supply Current in Fault Mode
7.3.2
Enable and Shutdown (EN)
7.3.3
Reference Current (IREF)
7.3.4
Constant-Current Output and Setting (INx)
7.3.5
Analog Current Control (ICTRL)
7.3.5.1
Off-Board Brightness Binning Resistor
7.3.5.2
NTC Resistor
7.3.6
Thermal Sharing Resistor (OUTx and RESx)
7.3.7
PWM Control (PWMx)
7.3.8
Supply Control
7.3.9
Diagnostics
7.3.9.1
IREF Short-to-GND Detection
7.3.9.2
IREF Open Detection
7.3.9.3
LED Short-to-GND Detection
7.3.9.4
LED Open-Circuit Detection
7.3.9.5
Single LED Short-Circuit Detection (SLS_REF)
7.3.9.6
LED Open-Circuit and Single LED Short-Circuit Detection Enable (DIAGEN)
7.3.9.7
Low Dropout Operation
7.3.9.8
Over-Temperature Protection
7.3.10
FAULT Bus Output With One-Fails–All-Fail
7.3.11
FAULT Table
7.3.12
LED Fault Summary
7.3.13
IO Pins Inner Connection
7.4
Device Functional Modes
7.4.1
Undervoltage Lockout, V(SUPPLY) < V(POR_rising)
7.4.2
Normal Operation V(SUPPLY) ≥ 4.5 V
7.4.3
Low-Voltage Dropout Operation
7.4.4
Fault Mode
8
Application and Implementation
8.1
Application Information
8.2
Typical Applications
8.2.1
BCM Controlled Rear Lamp with One-Fails-All-Fail Setup
8.2.1.1
Design Requirements
8.2.1.2
Detailed Design Procedure
8.2.1.3
Application Curves
8.2.2
Independent PWM Controlled Rear Lamp with Off Board LED and Binning Resistor
8.2.2.1
Design Requirements
8.2.2.2
Detailed Design Procedure
8.2.2.3
Application Curves
9
Power Supply Recommendations
10
Layout
10.1
Layout Guidelines
10.2
Layout Example
11
Device and Documentation Support
11.1
接收文档更新通知
11.2
支持资源
11.3
Trademarks
11.4
Electrostatic Discharge Caution
11.5
Glossary
12
Mechanical, Packaging, and Orderable Information
1
特性
符合面向汽车应用的 AEC-Q100 标准:
温度等级 1: – 40 ° C 至 125 ° C 、 T
A
宽输入电压范围:4.5V 至 40V
通过外部分流电阻器实现热共享功能
故障模式下具有低电源电流
三通道高精度电流调节:
每个通道的电流输出高达 150mA
在整个温度范围内精度为 ±5%
通过电阻器独立设置电流
用于亮度控制的独立 PWM 引脚
支持非板载亮度分级电阻
支持外部 NTC 进行电流降额
低压降:
最大压降:150mA 时为 600mV
诊断和保护
LED 开路,具有自动恢复功能
LED 接地短路,具有自动恢复功能
单 LED 短路检测及自动恢复
支持诊断并具有可调阈值
可配置为连带失效或仅失效通道关闭的故障总线 (N-1)
热关断
工作结温范围:–
40
°C 至 150°C
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