IS31FL3236 Datasheet, PDF (1/15 Pages) Integrated Silicon Solution, Inc – 36 CHANNELS LED DRIVER

IS31FL3236
36 CHANNELS LED DRIVER
July 2012
GENERAL DESCRIPTION
IS31FL3236 is comprised of 36 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.
IS31FL3236 is available in QFN-44 (5mm × 5mm) and
TQFP-48 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
 -40°C to +85°C temperature range
 QFN-44 (5mm × 5mm) and TQFP-48 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: 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 11.
Note: The IC should be placed far away from the mobile antenna in order to prevent the EMI.
Integrated Silicon Solution, Inc. – www.issi.com
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Rev.B, 07/16/2012