IS31FL3235

IS31FL3235 28 CHANNELS LED DRIVER March 2016 GENERAL DESCRIPTION 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. FEATURES  2.7V to 5.5V supply  I2C interface, automatic address increment function  Internal reset register  Modulate LED brightness with 256 steps PWM  Each channel can be controlled independently  Each channel can be scaled independently by 1, 1/2, 1/3 and 1/4  ESD HBM 8kV  -40°C to +85°C temperature range  QFN-36 (4mm × 4mm) package APPLICATIONS  Mobile phones and other hand-held devices for LED display  LED in home appliances TYPICAL APPLICATION CIRCUIT Figure 1 Typical Application Circuit Note 1: The maximum global output current is set up to 23mA when REXT = 3.3kΩ. The maximum global output current can be set by external resistor, REXT. Please refer to the detail information in Page 10. Note 2: The IC should be placed far away from the mobile antenna i...