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參數(shù)資料
| 型號(hào)： | TLC5902HTQFP |
| 廠(chǎng)商： | Texas Instruments, Inc. |
| 元件分類(lèi)： | LED驅(qū)動(dòng)器 |
| 英文描述： | LED DRIVER |
| 中文描述： | LED驅(qū)動(dòng) |
| 文件頁(yè)數(shù)： | 1/22頁(yè) |
| 文件大?。?/td> | 306K |
| 代理商： | TLC5902HTQFP |
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TLC5902
LED DRIVER
SLLS382 – DECEMBER 1999
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
80 mA
×
16 Bits and 120 mA
×
8 Bits
Drive Capability and Output Counts
5 mA to 80 mA/10 mA to 120 mA Constant
Current Output Range
Constant Currency Accuracy of
±
4%
(Maximum Error Between Bits)
Constant Current Output Terminals
– 0.4 V (Output Current 0 to 40 mA)
– 0.7 V (Output Current 40 to 80 mA)
256 Gray Scale Display With Pulse Width
Control 256 Steps
Brightness Adjustment
– 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)
Protection
– WDT Function
– TSD Function
Clock Synchronized 8-Bit Parallel Input
Anode Common LED Type Applied
CMOS Input Signal Level
(Schmitt-Triggered Input for All Input
Terminals)
4.5 V to 5.5 V Power Supply Voltage
15 V Maximum Output Voltage
15 MHz Maximum Data Transfer Rate
4 MHz Maximum Gray Scale Clock
Frequency
–20
°
C to 85
°
C Operating Free-Air
Temperature Range
100-Pin HTQFP Package
(PD = 4.7 W, T
A
= 25
°
C)
description
The TLC5902 is a constant current driver that incorporates shift register, data latch, and constant current
circuitry with a current value adjustable and 256 gray-scale display that uses pulse width control. The output
current can be selected as maximum 80 mA with 16 bits or 120 mA with 8 bits. The current value of the constant
current output is set by one external resister. After this device is mounted on a printed-circuit board (PCB), the
brightness deviation between LEDs (ICs) can be adjusted using an external data input, and 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 dynamic scanning operation, and thermal shutdown (TSD) circuitry, which turns constant
current output off when the junction temperature exceeds the limit.
Copyright
1999, Texas Instruments Incorporated
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.
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.
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