KTD3137数据手册Kinetic中文资料规格书

特性 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

应用 Application

• Smartphone/Tablet Backlight and Selfie Flash