TLC5922

TLC5922 www.ti.com SLVS486B – SEPTEMBER 2003 – REVISED OCTOBER 2009 LED DRIVER Check for Samples: TLC5922 FEATURES 1 2 16 Channels Drive Capability – 0 to 80 mA (Constant-Current Sink) Constant Current Accuracy – ±1% (typical) Serial Data Interface, SPI Compatible Fast Switching Output: Tr / Tf = 10ns (typical) CMOS Level Input/Output 30 MHz Data Transfer Rate VCC = 3.0 V to 5.5 V Operating Temperature = –20°C to 85 °C LED Supply Voltage up to 17 V 32-pin HTSSOP ( PowerPAD™) Package Dot Correction – 7 bit (128 Steps) – Individually Adjustable For Each Channel VCC GND PGND SCLK SIN Controlled In-Rush Current APPLICATIONS Monocolor, Multicolor, Fullcolor LED Display Monocolor, Multicolor LED Signboard Display Backlighting Multicolor LED Lighting Applications DESCRIPTION The TLC5922 is a 16-channel constant-current sink driver. Each channel has an On/Off state and a 128-step adjustable constant-current sink (dot correction). The dot correction adjusts the brightness variations between LED, LED channels, and other LED drivers. Both dot correction and On/Off state are accessible via a serial data interface. A single external resistor sets the maximum current of all 16 channels. MODE XLAT BLANK IREF Maximum OUTn Current MODE 01 0 On/Off Input Shift Register 15 16 112 0 DC Input Shift Register 111 01 MODE 10 On/Off Register 7−bit DC Register 0 0 6 BLANK On/Off Register 7−bit DC Register 1 7 13 Constant Current Driver Delay x0 Cons...