EUP2465 Datasheet, PDF (1/1 Pages) Eutech Microelectronics Inc – Synchronous Boost Flash LED Driver and Dual 1.5A High Side Current Source with I2C Compatible Interface

EUP2465
Synchronous Boost Flash LED Driver and Dual 1.5A
High Side Current Source with I²C Compatible Interface
DESCRIPTION
The EUP2465 is a 2MHz or 4MHz fixed frequency,
current mode synchronous boost converter with two
current sources. The device is designed to operate up to
1.5A constant current for each channel.
An industry-standard I²C serial digital input is used to
enable, disable and set the current for flash LED. The
EUP2465 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 128 target current levels from 10.9mA to 1.5A.
And also in torch mode, the programmable current
ranges from 0.977mA to 179mA by 128 steps.
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. NTC
function is designed for temperature sensing and current
scale back.
EUP2465 is available in a small 12-bump WCSP
package.
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 10.9mA to
1.5A
- Programmable Torch LED Current from 0.977mA
to 179mA
- 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
Typical Application Circuit
APPLICATIONS
LED Photo Flash/Movie
Smart phone
Tablets
DS2465 Ver1.0 Jan. 2017
Figure 1. Typical Application
1