TLC5903

更新时间： 2024-01-10 23:08:20

品牌	Logo	应用领域
德州仪器 - TI		驱动器
页数	文件大小	规格书
23页	335K
描述
LED DRIVER

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中文翻译

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数据手册

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TLC5903 数据手册

TLC5903

LED DRIVER

SLLS383 – DECEMBER 1999

80 mA x 16 Bits and 120 mA x 8 Bits

Drive Capability and Output Counts

Protection

– WDT Function

– TSD Function

5 mA to 80 mA/10 mA to 120 mA Constant

Current Output Range

Clock Synchronized 8-Bit Parallel Input

Anode Common LED Type Applied

Constant Currency Accuracy of ±4%

(Maximum Error Between Bits)

CMOS Input Signal Level

(Schmitt-Triggered Input for All Input

Terminals)

Constant Current Output Terminals

– 0.4 V (Output Current 0 to 40 mA)

– 0.7 V (Output Current 40 to 80 mA)

4.5 V to 5.5 V Power Supply Voltage

15 V Maximum Output Voltage

256 Gray Scale Display With Pulse Width

Control 256 Steps

15 MHz Maximum Data Transfer Rate

Brightness Adjustment

8 MHz Maximum Gray Scale Clock

Frequency

– Output Current Adjustment for 32 Steps

(Adjustment for Brightness Deviation

Between LEDs)

– 8 Steps Brightness Control by 8 Times

Speed Gray Scale Control Clock

(Brightness Adjustment for Panel)

–20°C to 85°C Operating Free-Air

Temperature Range

100-Pin HTQFP Package

(PD = 4.7 W, T = 25°C)

description

The TLC5903 is a constant current driver that incorporates shift register, data latch, and constant current

circuitry with an adjustable current value and a 256 gray scale display that uses pulse width control. The output

current can be selected at a maximum of 80 mA with 16 bits or 120 mA with 8 bits. The current value of the

constant current output is set by one external register. After this device is mounted on a printed-circuit board

(PCB), the brightness deviation between LEDs (ICs) can be adjusted by using an external data input. The

brightness control for the panel can be adjusted using the brightness adjustment circuitry. Moreover, the device

incorporates watchdog timer (WDT) circuitry, which turns the constant current output off when the scan signal

is stopped during the dynamic scanning operation, and thermal shutdown (TSD) circuitry, which turns the

constant current output off when the junction temperature exceeds the limit.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

12 3 4 5 6 7...23

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