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部品型式

TLC5941PWP

製品説明
仕様・特性

TLC5941 PWP www.ti.com RHB NT SLVS589D – JULY 2005 – REVISED JANUARY 2008 16-CHANNEL LED DRIVER WITH DOT CORRECTION AND GRAYSCALE PWM CONTROL FEATURES APPLICATIONS • 16 Channels • 12-Bit (4096 Steps) Grayscale PWM Control • Dot Correction – 6 Bit (64 Steps) • Drive Capability (Constant-Current Sink) – 0 mA to 80 mA • LED Power Supply Voltage up to 17 V • VCC = 3.0 V to 5.5 V • Serial Data Interface • Controlled In-Rush Current • 30-MHz Data Transfer Rate • CMOS Level I/O • Error Information – LOD: LED Open Detection – TEF: Thermal Error Flag • • • 1 2 VCC SCLK GND Monocolor, Multicolor, Full-Color LED Displays LED Signboards Display Back-Lighting DESCRIPTION The TLC5941 is a 16-channel, constant-current sink, LED driver. Each channel has an individually adjustable 4096-step grayscale PWM brightness control and a 64-step constant-current sink (dot correction). The dot correction adjusts the brightness variations between LED channels and other LED drivers. Both grayscale control and dot correction are accessible via a serial interface. A single external resistor sets the maximum current value of all 16 channels. The TLC5941 features two error information circuits. The LED open detection (LOD) indicates a broken or disconnected LED at an output terminal. The thermal error flag (TEF) indicates an overtemperature condition. SIN XLAT CNT MODE 1 0 IREF Max. OUTn Current V REF =1.24V GS Register MODE 1 0 11 0 GSCLK BLANK 0 DC Register 0 5 GS Counter CNT 0 Status Information: LOD, TED, DC DATA 191 96 12−Bit Grayscale PWM Control Constant-Current Driver OUT0 Delay x0 6−Bit Dot Correction LED Open Detection Input Shift Register CNT 192 192 GS Register 23 96 95 1 0 96 12 DC Register 11 12−Bit Grayscale PWM Control Constant-Current Driver OUT1 Delay x1 6−Bit Dot Correction 6 MODE LED Open Detection 96 Temperature Error Flag (TEF) LED Open Detection (LOD) CNT Input Shift Register GS Register 191 XERR 180 DC Register 95 12−Bit Grayscale PWM Control Constant-Current Driver OUT15 Delay x15 6−Bit Dot Correction 90 191 LED Open Detection SOUT 1 2 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. PowerPAD is a trademark of Texas Instruments. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright © 2005–2008, Texas Instruments Incorporated

ブランド

TI

会社名

Texas Instruments Incorporated

本社国名

U.S.A

事業概要

世界25ヶ国以上に製造・販売拠点を有する国際的な半導体企業であり、デジタル情報家電、ワイヤレス、ブロードバンド市場に欠かせないデジタル信号処理を行うDSPと、それに関連するアナログIC、マイクロコントローラを主力製品としている。

供給状況

 
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