TLC5921中文资料具有 20MHz 数据传输速率的 16 通道 LED 驱动器数据手册TI规格书

描述 Description

The TLC5921 is a current-sink constant current driver incorporating shift register and data latch. The current value at constant current output can be set by one external register. The device also incorporates thermal shutdown (TSD) circuitry which turns constant current output off when the junction temperature exceeds the limit, and LED open detection (LOD) circuitry to report the LED was disconnected.

特性 Features

• Drive Capability and Output Counts
• 80 mA (Current Sink) x 16 Bits

• Constant Current Output Range
• 1 to 80 mA ( Current Value Setting for All Output Terminals Using External Resistor)

• Constant Current Accuracy
• ±1% (Typ)
• ±4% (Max) (Maximum Error Between Bits, All Bits On)

• Voltage Applied to Constant Current Output Terminal
• Minimum 0.6 V (Output Current 40 mA)
• Minimum 1 V (Output Current 80 mA)

• Data Input
• Clock Synchronized 1 Bit Serial Input

• Data Output
• Clock Synchronized 1 bit Serial Output (With Timing Selection)

• Input/Output Signal Level...CMOS Level
• Power Supply Voltage...4.5 V to 5.5V
• Maximum Output Voltage...17 V (Max)
• Data Transfer Rate...20 MHz (Max)
• Operating Free-Air Temperature Range -20°C to 85°C
• Available in 32 Pin HTSSOP DAP Package (PD=3.9 W, TA = 25°C)
• LOD Function...LED Open Detection (Error Signal Output at LED Disconnection)
• TSD Function...Thermal Shutdown (Turn Output Off When Junction Temperature Exceeds Limit)

简介

TLC5921属于集成电路（IC）的LED驱动器。由TI制造生产的TLC5921LED 驱动器器件属于 LED 驱动器电源管理集成电路 (PMIC) 系列，可通过标称固定电压的电源为负载（通常为发光二极管）提供电流，并且电流可控。它与用于电压调节的类似产品的主要区别在于，这类器件提供较低的反馈电压（以提高系统能效），而且通常可对器件工作点进行外部控制，可在照明应用中用于实现调光功能。