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TLC5903 Datasheet(PDF) 1 Page - Texas Instruments |
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TLC5903 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 23 page TLC5903 LED DRIVER SLLS383 – DECEMBER 1999 1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 D 80 mA x 16 Bits and 120 mA x 8 Bits Drive Capability and Output Counts D 5 mA to 80 mA/10 mA to 120 mA Constant Current Output Range D Constant Currency Accuracy of ±4% (Maximum Error Between Bits) D Constant Current Output Terminals – 0.4 V (Output Current 0 to 40 mA) – 0.7 V (Output Current 40 to 80 mA) D 256 Gray Scale Display With Pulse Width Control 256 Steps D 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) D Protection – WDT Function – TSD Function D Clock Synchronized 8-Bit Parallel Input D Anode Common LED Type Applied D CMOS Input Signal Level (Schmitt-Triggered Input for All Input Terminals) D 4.5 V to 5.5 V Power Supply Voltage D 15 V Maximum Output Voltage D 15 MHz Maximum Data Transfer Rate D 8 MHz Maximum Gray Scale Clock Frequency D –20°C to 85°C Operating Free-Air Temperature Range D 100-Pin HTQFP Package (PD = 4.7 W, TA = 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. 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. Copyright © 1999, Texas Instruments Incorporated 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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