The SC614 is a low noise backlight and flash driver with a serial interface. It features four independent current sinks for main backlight, adjustable from 0.4mA to 32mA each. It also has three independent current sinks for sub-backlight or flash, adjustable from 0.4mA to 102mA each. The driver supports PWM dimming and flash control, and offers high efficiency and battery life. It is equipped with various protection features and operating modes.
The SC614 is a high efficiency charge pump LED driver using Semtech's proprietary mAhXLife technology, optimized for Li-ion battery applications. It features four independent current sinks for main backlighting and three configurable sinks for sub-displays or flash LEDs, all programmable via an I2C serial control bus. The device supports PWM dimming through dedicated pins and includes features such as soft-start, short-circuit protection, and thermal shutdown.
| Input Supply Voltage | 3.0 to 5.5 V |
|---|---|
| Operating Ambient Temperature Range | -40 to +85 °C |
| Shutdown Current | 0.1 µA (typ) |
| Total Quiescent Current (Sleep Mode) | 50 µA (typ) |
| Pump Frequency Options | 250 kHz and 1.33 MHz |
| Package Type | MLPQ-24 (4mm x 4mm) |
| Current Accuracy | +/- 1.5% down to 4.8mA |
The SC614 is optimized for use in Li-ion battery applications, specifically for cellular phone backlighting and flash, LCD modules, and PDA backlighting.
There are four independent current sinks for main backlighting, adjustable from 0.4mA to 32mA each.
Yes, the three current sinks for sub-backlight or flash are configurable over the I2C interface for any combination of pins.
The maximum input supply voltage is 5.5V, with an absolute maximum rating of 6.5V.