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EUP2466 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
EUP2466
Synchronous Boost Flash LED Driver and Dual 1.5A
High Side Current Source with I2C Compatible Interface
DESCRIPTION
The EUP2466 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.
An industry-standard I2C serial digital input is used to
enable, disable and set the current for flash LED. The
EUP2466 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.
The total LED current of EUP2466 can deliver is 1.5A
(ILED1+ILED2). The dual 128 level current sources provide
the flexibility to adjust the current ratios between LED1
and LED2 (ex: ILED1=1.5A and ILED2=OFF, ILED1=OFF
and ILED2=1.5A, or a current configuration with a current
less than 1.5A, ILED1=700mA and ILED2=300mA). 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.
EUP2466 is available in a small 12-bump WCSP
package.
Typical Application Circuit
FEATUES
2.5V to 5.5V Input Supply Range
1.5A Total Allowed LED Current During Operation
(ILED1+ILED2=1.5A)
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
APPLICATIONS
LED Photo Flash/Movie
Smart phone
Tablets
DS2466 Ver1.0 Nov. 2016
Figure 1. Typical Application
1