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TLC5903 - LED DRIVER

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General 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.

Overview

TLC5903 LED DRIVER 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) SLLS383 – DECEMBER 1999 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.

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