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IS31FL3235

ISSI
Part Number IS31FL3235
Manufacturer ISSI
Description 28 CHANNELS LED DRIVER
Published May 28, 2016
Detailed Description IS31FL3235 28 CHANNELS LED DRIVER March 2016 GENERAL DESCRIPTION IS31FL3235 is comprised of 28 constant current channe...
Datasheet PDF File IS31FL3235 PDF File

IS31FL3235
IS31FL3235


Overview
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 in order to prevent the EMI.
Integrated Silicon Solution, Inc.
– www.
issi.
com Rev.
C, 03/24/2016 1 36 OUT1 35 SCL 34 SDA 33 R_EXT 32 GND 31 VCC 30 AD 29 SDB 28 OUT28 IS31FL3235 PIN CONFIGURATION Package Pin Configuration (Top View) QFN-36 OUT11 10 OUT12 11 OUT13 12 OUT14 13 GND 14 OUT15 15 OUT16 16 OUT17 17 OUT18 18 PIN DESCRIPTION No.
Pin 1 ~ 13 14，32 OUT2 ~ OUT14 GND 15 ~ 28 OUT15 ~ OUT28 29 SDB 30 AD 31 VCC 33 R_EXT 34 SDA 35 SCL 36 OUT1 Thermal Pad Description Output channe...


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