KTD3137 High Efficiency 3-Channel LED Backlight with Panel Flash Function

Features

Wide input range: 2.7V~5.5V
High efficiency step-up 3-Channel LED driver
3-Ch current sinks, up to 8-LEDs per string
- Up to 29.8mA/Ch in backlight mode and up to 59.6mA/Ch in flash mode;
- +/-0.6% current matching at 20.2mA;
- +/-1.5% current accuracy at 20.2mA
I²C/PWM dualdimming control scheme
- 11-bit I²C exponentialor linear mapping with programmable transition ramp time
- Wide range PWM dimming with programable transition ramp time
- 100Hz to 100kHz frequency
- 0.2% to 100% duty cycle at 20kHz
Programmable current sink turn on/off ramp time and shape
Selectable boost converter switching frequency 1MHz or 500kHz with 20% shift up option
Programmable input PWM hysteresis to minimize jitter at low PWM duty cycle
Programmable OVP (25.9V/32V) and current limit (2.6A/1.8A)
Programmable flash current and timeout
LED open/short protection
Status reporting through I²C interface
12-ball 1.19mm x 1.64mm WLCSP or a 16-lead 3mm x 3mm x 0.75mm Thin-QFN package.

Vin (Min)	Vin (Max)	Over Voltage Prptection	Chanels	Number of LEDs	Maximum Current	Dimming Control	Switching Frequency	Package
2.7V	5.5V	26/32V	3	24	30mA/60mA (flash)	I²Cand PWM	0.5/1MHz	WLCSP-12/TQFN33-16

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