IS31FL3191-UTLS2-TR

IS31FL3191 1-CHANNEL FUN LED DRIVER July 2021 GENERAL DESCRIPTION FEATURES IS31FL3191 is a 1-channel fun LED driver which has Independently controlled automatic and One Shot Programming mode and PWM Control mode semiautomatic breathing system-free pre- for LED lighting effects. The maximum output current established pattern can be adjusted in 5 levels (5mA~42mA). I2C interface, automatic address increment function In PWM Control mode, the PWM duty cycle of each output can be independently programmed and Independently controlled output of 256 PWM controlled in 256 steps to simplify color mixing. In One steps Shot Programming mode, the timing characteristics for 2.7V to 5.5V supply voltage output current - current rising, holding, falling and off 5 levels programmable output current time, can be adjusted individually. Over-temperature protection IS31FL3191 is available in UTQFN-9 (1.5mm 1.5mm). Operating temperature TA = 40C ~ +85C It operates from 2.7V to 5.5V over the temperature UTQFN-9 (1.5mm 1.5mm) package range of -40C to +85C. APPLICATIONS Mobile phones and other hand-held devices for LED display LED in home appliances TYPICAL APPLICATION CIRCUIT Figure 1 Typical Application Circuit Note: The IC should be placed far away from the mobile antenna in order to prevent the EMI. Lumissil Microsystems www.lumissil.com 1 Rev. C, 07/05/2021 IS31FL3191 PIN CONFIGURATION Package Pin Configuration (Top View) UTQFN-9 PIN DESCRIPTION No. Pin Description A1 SDB Shutdown the chip when pulled to low. A2, A3 NC No connection. B1, B2 GND Ground. B3 SDA I2C serial data. C1 OUT Current source output. C2 VCC Power supply. C3 SCL I2C serial clock. Lumissil Microsystems www.lumissil.com 2 Rev. C, 07/05/2021