TLC5960
www.ti.com
Eight-Channel LED Driver with Intelligent Headroom Voltage Monitor (iHVM™)
Check for Samples: TLC59...
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...