IS31BL3231-DLS2 Datasheet, PDF (1/13 Pages) Integrated Silicon Solution, Inc – FLASH LED DRIVER

IS31BL3231
FLASH LED DRIVER
July 2015
GENERAL DESCRIPTION
The IS31BL3231 is a current-regulated charge pump
and ideal for powering high brightness LEDs for camera
flash and torch applications. The charge pump can be
set to regulate two current levels for FLASH and TORCH
modes. The IS31BL3231 automatically switches
between linear and boost modes ensuring that LED
current does not depend on the LED forward voltage.
IS31BL3231 provides low cost, space saving solution for
driving LED. It also integrates thermal and short circuit
protection function.
IS31BL3231 is available in DFN-10 (3mm × 3mm). It
operates from 2.7V to 5.5V over the temperature range
of -40°C to +85°C.
FEATURES
 Operates from 2.7V to 5.5V
 Up to 90% efficiency in Torch Mode
 Output current up to 750mA
 Adjustable output current in Flash Mode
 Minimum external components, no external
inductor required
 Automatic boost mode
 Less than 1µA shutdown current
 Low ripple and EMI
 Over voltage protection on output
 Short and over temperature protections
 Available in DFN-10 (3mm × 3mm) package
APPLICATIONS
 White LED backlighting
 Cellular phones
 Generic lighting/flash/strobe applications
TYPICAL APPLICATION CIRCUIT
Figure 1 Typical Application Circuit (Torch Mode Lv1-227mA, Flash Mode 718mA)
Integrated Silicon Solution, Inc. – www.issi.com
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Rev. C, 06/12/2015