TLC5960

TLC5960 www.ti.com Eight-Channel LED Driver with Intelligent Headroom Voltage Monitor (iHVM™) Check for Samples: TLC5960 SBVS147 – SEPTEMBER 2010 FEATURES 1 23 250kHz PWM Dimming Four Intelligent Headroom Voltage Monitor (iHVM) Outputs Eight-Channel, High-Voltage LED Driver: – 0.3% (typ) Accuracy Between Channels Control Interface with Four PWM Inputs Easy-To-Use Analog Dimming Interface 10% to 100% Analog Brightness Dimming Integrated 5V Internal Regulator Integrated Power-On Reset (POR) Circuitry Full Protection/Diagnostic Functions: – LOD: LED Open Detection – LSD: LED Short Detection – FOD: FET Open Detection – FSD: FET Short Detection Built-In Phase Shift Function 38-Pin TSSOP Package APPLICATIONS LED Backlights for LCD-TV High-Current LED Lighting 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...