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IS31BL3232 Datasheet(PDF) 1 Page - Integrated Silicon Solution, Inc |
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IS31BL3232 Datasheet(HTML) 1 Page - Integrated Silicon Solution, Inc |
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1 / 11 page  IS31BL3232 Integrated Silicon Solution, Inc. – www.issi.com 1 Rev. A, 04/22/2013 FLASH LED DRIVER May 2013 GENERAL DESCRIPTION The IS31BL3232 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 IS31BL3232 automatically switches between linear and boost modes ensuring that LED current does not depend on the LED forward voltage. In the Flash Mode the output will shut down automatically after 1s to save energy. IS31BL3232 provides low cost, space saving solution for driving LED. It also integrates thermal and short circuit protection function. IS31BL3232 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 1.2A(1s) in Flash Mode Adjustable output current in Flash Mode Time out function with 1s for 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 ESD HBM 8kV 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) |
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