晶錡科技 StarChips
SCT2514 8-bit PWM LED Driver with Global Brightness Control
Features
* Patented SPI interface for simplicity of local dimming control
* Patented logical feedback for automatic supply regulation
* LED brightness local dimming and scanning mode control are supported
* High linearity gray response with accurate 1 to 100% PWM dimming control
* Real-time dot correction of luminance
* Backlight local dimming controller available
* Built-in internal PWM clock, 4 independent 8-bit PWM digital current controlled outputs
* Vsync frame start and external PWM clock input for Hsync synchronization are available
* Power-on open detection to bypass unconnected or broken LED strings
* 4 constant current sinkers with output voltage sustainable to 24V
* Excellent regulation to load, supply voltage and temperature
Temperature regulation: ±0.005%/°C, load regulation: ±0.1%/V, line regulation: ±0.5%/V
* High current matching accuracy: ±1% between outputs, ±2% between ICs
* Constant output current : 60 – 180/240mA@3.3/5V
* Low dropout voltage 0.5V@120mA, VDD=5V
* Output current is set by a single external resistor and OEI programmable outputs
* Buffered outputs to regenerate input signals for cascaded operation
* CMOS Schmitt trigger inputs
* Built-in power on reset(POR) circuit forces all the outputs ON while power on
* Built#in thermal protection function to prevent damage from over current operation
* Package: TSSOP20 with thermal pad
* Applications: Local dimming LED backlight
| SCT2514 Package Type |
SCT2514
(TSSOP20)
|
 |
SCT2514 Typical Applications circuit
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