IS31FL3236A 36-CHANNEL LED DRIVER SELECTABLE PWM FREQUENCY October 2020 GENERAL DESCRIPTION FEATURES IS31FL3236A is comprised of 36 constant current 2.7V to 5.5V supply channels each with independent PWM control, I2C interface, automatic address increment designed for driving LEDs, PWM frequency can be function 3kHz or 22kHz. The output current of each channel Four selectable I2C addresses can be set at up to 38mA (Max.) by an external resistor SDB rising edge reset I2C module and independently scaled by a factor of 1, 1/2, 1/3 and Internal reset register 1/4. The average LED current of each channel can be Modulate LED brightness with 256 steps PWM changed in 256 steps by changing the PWM duty cycle through an I2C interface. Each channel can be controlled independently Each channel can be scaled independently by 1, The chip can be turned off by pulling the SDB pin low or 1/2, 1/3 and 1/4 by using the software shutdown feature to reduce PWM frequency selectable power consumption. - 3kHz (default) IS31FL3236A is available in QFN-44 (5mm5mm) and - 22kHz eTQFP-48 packages. It operates from 2.7V to 5.5V -40C to +85C temperature range: over the temperature range of -40C to +85C and - IS31FL3236A-QFLS2-TR, QFN-44 (5mm5mm) -40C to +125C. -40C to +125C temperature range: - IS31FL3236A-QFLS4-TR, QFN-44 (5mm5mm) - IS31FL3236A-TQFP, eTQFP-48 APPLICATIONS Mobile phones and other hand-held devices for LED display LED in home appliances TYPICAL APPLICATION CIRCUIT VBattery VBattery VCC OUT1 1 F AD 0.1 F OUT2 V OUT3 DD 4.7k 4.7k OUT4 SDA Micro IS31FL3236A SCL Controller SDB 100k OUT33 OUT34 R EXT OUT35 REXT 3.3k GND OUT36 Figure 1 Typical Application Circuit Note 1: The maximum global output current is set to 23mA when R = 3.3k . Please refer Page 11 for setting LED current. EXT Lumissil Microsystems www.lumissil.com 1 Rev. E, 09/30/2020 IS31FL3236A PIN CONFIGURATION Package Pin Configuration (Top View) QFN-44 eTQFP-48 Lumissil Microsystems www.lumissil.com 2 Rev. E, 09/30/2020