EUP2475 Datasheet, PDF (1/1 Pages) Eutech Microelectronics Inc – 1.5A Synchronous Boost LED Flash Driver

EUP2475
1.5A Synchronous Boost LED Flash Driver
with I²C 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 I²C 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.
FEATUES
2.5V to 5.5V Input Supply Range
Up to 1.5A Regulated Output Current
Up to 85% Efficiency
4 MHz Fixed Switching Frequency
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)
True Load Disconnect
Input Current Limit
Output Over-Voltage, Short Circuit and
Over-Temperature Protection
1.61mm×1.61mm WCSP-9 Package
RoHS Compliant and 100% Lead (Pb)-Free
Halogen-Free
Typical Application Circuit
APPLICATIONS
LED Photo Flash/Movie
Smartphone
Tablets
DS2475 Ver1.0 Dec. 2015
Figure 1. Typical Application
1