TLC5921中文資料具有 20MHz 數(shù)據(jù)傳輸速率的 16 通道 LED 驅(qū)動器數(shù)據(jù)手冊TI規(guī)格書

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)

簡介

TLC5921屬于集成電路（IC）的LED驅(qū)動器。由TI制造生產(chǎn)的TLC5921LED 驅(qū)動器器件屬于 LED 驅(qū)動器電源管理集成電路 (PMIC) 系列，可通過標稱固定電壓的電源為負載（通常為發(fā)光二極管）提供電流，并且電流可控。它與用于電壓調(diào)節(jié)的類似產(chǎn)品的主要區(qū)別在于，這類器件提供較低的反饋電壓（以提高系統(tǒng)能效），而且通?？蓪ζ骷ぷ鼽c進行外部控制，可在照明應用中用于實現(xiàn)調(diào)光功能。