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TLC5946 Datasheet(PDF) 1 Page - Texas Instruments |
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TLC5946 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 35 page 1 FEATURES APPLICATIONS DESCRIPTION ¼ SIN XERR SCLK XLAT MODE GSCLK SOUT VCC GND TLC5946 IC1 OUT0 OUT15 XHALF ¼ ¼ V LED V LED ¼ SIN SCLK XLAT BLANK R IREF IREF SOUT TLC5946 ICn OUT0 OUT15 OUT XERR SCLK XLAT MODE BLANK GSCLK IN ¼ V LED V LED R IREF IREF Controller 5 BLANK GSCLK MODE XERR VCC GND XHALF V CC V CC V CC TLC5946 www.ti.com ......................................................................................................................................................... SLVS824A – MARCH 2008 – REVISED APRIL 2008 16-Channel, 12-Bit PWM LED Driver with 6-Bit Dot Correction • Monochrome, Multicolor, Full-Color LED 23 • 16 Channels, Constant Current Sink Output Displays • 40-mA Capability (Constant Current Sink) • LED Signboards • 12-Bit (4096 Steps) Grayscale PWM Control • Display Backlighting • 6-Bit (64 Steps) Dot Correction • LED Power-Supply Voltage up to 17 V • V CC = 3.0 V to 5.5 V The TLC5946 is a 16-channel, constant current sink • Constant Current Accuracy: LED driver. Each channel is individually adjustable with 4096 pulse-width modulated (PWM) steps and – Channel-to-Channel = ±1% (typ) 64 constant current sink steps for dot correction. The – Device-to-Device = ±2% (typ) dot correction adjusts the brightness variations • 30-MHz Data Transfer Rate between LEDs. Both grayscale control and dot correction are accessible via a serial interface. The • 33-MHz Grayscale PWM Clock maximum current value of all 16 channels can be set • Extended Serial Interface by a single external resistor. • CMOS Level I/O The TLC5946 has two error information circuits: one • Schmitt Buffer Input for LED open detection (LOD), and a thermal error • Readable Error Information: flag (TEF). LOD detects a broken or disconnected LED during display period. TEF indicates an – Continuous Base LED Open Detection over-temperature condition. (LOD) – Thermal Error Flag (TEF) • Noise Reduction: – 4-Channel Grouped Delay • Operating Temperature: –40°C to +85°C Typical Application Circuit (Multiple Daisy-Chained TLC5946s) 1 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. 2 PowerPAD is a trademark of Texas Instruments, Inc. 3 All other trademarks are the property of their respective owners. UNLESS OTHERWISE NOTED this document contains Copyright © 2008, Texas Instruments Incorporated PRODUCTION DATA information 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. |
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