TLC5910

LED DRIVER

SLLS392 – NOVEMBER 1999

2

POST OFFICE BOX 655303

description

The TLC5910 is a constant current driver, incorporating a shift register, data latch, and constant current circuitry

with current value adjustable, PLL circuitry for gray scale control clock generation, and 1024 gray scale display

using pulse width control. The output current is a maximum of 80 mA with 16 bits, and the current value of

constant current output can be set by one external resistor. The device has two channel I/O ports. The

brightness deviation between LED modules (ICs) can be adjusted by external data input from a display data

port. The brightness control for the panel can be accomplished by the brightness adjustment circuitry.

Independently of these functions, the device incorporates the shift register and data latch to correct the deviation

between LEDs adjusting output current using data from a dot correction data port. Moreover, the device

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

stopped at the dynamic scanning operation. It incorporates thermal shutdown (TSD) circuitry, which turns

constant current output off when the junction temperature exceeds the limit. It also incorporates LOD (LED open

detection) circuitry, which creates an error signal output when LED disconnection occurs and test mode

functions detect LED open or short conditions.

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OUT7

PZP PACKAGE

(TOP VIEW)

VCOIN

RBIAS

MAG0

MAG1

MAG2

PDOUT

GSPOL

GSCLK

BLANK

XENABLE

XOE

DCLK

XLATCH

DCCLK

XDCLAT

RSEL0

RSEL1

LEDCHK

OPEN

WDTRG

XDOWN1

XDOWN2

BOUT

XGSOUT

XPOUT

GNDLED

OUT8

OUT9

GNDLED

OUT10

OUT11

GNDLED

OUT12

OUT13

GNDLED

OUT14

OUT15

GNDLED

OUT6

GNDLED

OUT5

OUT4

GNDLED

OUT3

OUT2

GNDLED

OUT1

OUT0

GNDLED