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TLC5960DA датащи(PDF) 1 Page - Texas Instruments |
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TLC5960DA датащи(HTML) 1 Page - Texas Instruments |
1 / 33 page TLC5960 VADJ EN CTRL[1:4] HVM[1:4] XFLT VREG5 VIN D1 G1 S1 D2 D8 G2 G8 S2 S8 Ch1 Ch2 Ch8 DC/DC4 DC/DC3 DC/DC2 DC/DC1 V LED1 V LED4 TLC5960 www.ti.com SBVS147 – SEPTEMBER 2010 Eight-Channel LED Driver with Intelligent Headroom Voltage Monitor (iHVM™) Check for Samples: TLC5960 1 FEATURES • Full Protection/Diagnostic Functions: 23 • 250kHz PWM Dimming – LOD: LED Open Detection • Four Intelligent Headroom Voltage Monitor – LSD: LED Short Detection (iHVM) Outputs – FOD: FET Open Detection • Eight-Channel, High-Voltage LED Driver: – FSD: FET Short Detection – 0.3% (typ) Accuracy Between Channels • Built-In Phase Shift Function • Control Interface with Four PWM Inputs • 38-Pin TSSOP Package • Easy-To-Use Analog Dimming Interface APPLICATIONS • 10% to 100% Analog Brightness Dimming • LED Backlights for LCD-TV • Integrated 5V Internal Regulator • High-Current LED Lighting • Integrated Power-On Reset (POR) Circuitry DESCRIPTION The TLC5960 is an eight-channel PWM LED driver with four intelligent headroom voltage monitor (iHVM) outputs. The LED drivers have scalable, high-voltage capability and provide 1% maximum current matching accuracy between LED strings. To achieve optimal efficiency, the iHVM automatically optimizes the external dc/dc converter output voltage to compensate for the forward-voltage variations of the LED Compared to a conventional HVM solution that requires several MOSFETs, capacitors, and resistors, the iHVM is designed to use only a single external resistor. The LED driver design is capable of up to 250kHz PWM dimming, and also provides an analog brightness dimming interface. This device easily adapts to various LED and power configurations with a single voltage input rail. Full protection and diagnostic functions are provided to protect the entire system, such as LED open/short detection (LOD/LSD), FET open/short detection (FOD/FSD) and thermal shutdown (TSD). In case of failure, the TLC5960 automatically disconnects the failed channel(s) from the operating channels and pulls down the open drain fault buffer (XFLT) to signal an error status. iHVM™ Typical Application Circuit 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 iHVM is a trademark of Texas Instruments. 3 All other trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Copyright © 2010, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
Аналогичный номер детали - TLC5960DA |
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Аналогичное описание - TLC5960DA |
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