EUP2475 EUTECH | Alldatasheet
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Technical content
DS2475 Ver1.0 Dec. 2015 1.5A Synchronous Boost LED Flash Driver with I 2C Compatible Interface
DESCRIPTION
The EUP2475 is a 4MHz fixed frequency, current mode synchronous boost converter. The device is designed to operate 1.5A constant current driver for flash white LED applications. An industry-standard I 2C serial digital input is used to enable, disable and set the current for flash LED. The EUP2475 has two logic inputs including a hardware Flash Enable (STROBE) and a Flash Interrupt input (TX/TORCH) designed to interrupt the flash pulse during high battery current conditions. In flash mode, the LED current source provides 16 target current levels from 93.75mA to 1.5A. And also tin torch mode, the programmable current ranges from 48.4mA to 375mA. An over voltage protection feature keeps the output voltage below the OVP threshold in the case of an open LED and an output short circuit protection limits the output current during an output short to GND. EUP2475 is available in a small 9-bump (1.61mm ×1.61mm) WSCP package. Typical Application Circuit FEATUES /circle6 2.5V to 5.5V Input Supply Range /circle6 Up to 1.5A Regulated Output Current /circle6 Up to 85% Efficiency /circle6 4 MHz Fixed Switching Frequency /circle6 I2C-Compatible Interface - 400kHz Serial Transfer Rate - Flash/Torch/Indicator/Standby - Programmable Flash LED Current from 93mA to 1.5A - Programmable Torch LED Current from 48.4mA to 375mA - Programmable Flash Time-Out Timer - Programmable Current Ramp Timer - Programmable Input Voltage Flash Monitor (IVFM) /circle6 True Load Disconnect /circle6 Input Current Limit /circle6 Output Over-Voltage, Short Circuit and Over-Temperature Protection /circle6 1.61mm×1.61mm WCSP-9 Package /circle6 RoHS Compliant and 100% Lead (Pb)-Free Halogen-Free
APPLICATIONS
/circle6 LED Photo Flash/Movie /circle6 Smartphone /circle6 Tablets Figure 1. Typical Application