概觀
IS31FL3235 is comprised of 28 constant current
channels each with independent PWM control,
designed for driving LEDs. The output current of each
channel can be set at up to 38mA (Max.) by an external
resistor and independently scaled by a factor of 1, 1/2,
1/3 and 1/4. The average LED current of each channel
can be changed in 256 steps by changing the PWM
duty cycle through an I2C interface.
The chip can be turned off by pulling the SDB pin low or
by using the software shutdown feature to reduce
power consumption.
IS31FL3235 is available in QFN-36 (4mm × 4mm)
package. It operates from 2.7V to 5.5V over the
temperature range of -40°C to +85°C.