EUP2468 Datasheet, PDF (1/1 Pages) Eutech Microelectronics Inc – 1.5A Synchronous Boost LED Flash Driver with I2C Compatible Interface

EUP2468
1.5A Synchronous Boost LED Flash Driver
with I²C Compatible Interface
DESCRIPTION
The EUP2468 is a 2MHz or 4MHz fixed frequency,
current mode synchronous boost converter with two
current sources. The device is designed to operate 1.5A
constant current driver for single channel.
An industry-standard I²C serial digital input is used to
enable, disable and set the current for flash LED. The
EUP2468 has four logic inputs including a hardware
Flash Enable (STROBE), a Flash Interrupt input (TX), a
hardware Torch Enable (TORCH/TEMP), Acitve High
Enable (HWEN). In flash mode, the LED current source
provides target current levels from 21.8mA to 1.5A. And
also in torch mode, the programmable current ranges
from 1.954mA to 358mA.
The EUP2468 contains serveral protect functions in
abnormal conditions such as: Overvltage Protection,
Current Limit, NTC Monitoring Protection,
Undervoltage Lockout Protection, Thermal Shutdown
Protection and LED/OUT short Protection. Built-in
circuitry prevents excessive inrush current during start-up.
The chip’s quiescent current is less than 1.0µA in
shutdown mode.
EUP2468 is available in a small 12-bump WCSP
package.
Typical Application Circuit
FEATUES
2.5V to 5.5V Input Supply Range
Up to 85% Efficiency
2MHz or 4MHz Fixed Switching Frequency
I²C-Compatible Interface
- 400-kHz Serial Transfer Rate
- Flash/Torch/IR/Standby
- Programmable Flash LED Current from 21.8mA to
1.5A
- Programmable Torch LED Current from 1.954mA
to 358mA
- 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
NTC Monitoring
0.4mm Pitch, 12-Bump WCSP
RoHS Compliant and 100% Lead(Pb)-Free
Halogen-Free
APPLICATIONS
LED Photo Flash/Movie
Smart phone
Tablets
DS2468 Ver1.0 Nov. 2016
Figure 1. Typical Application
1