EUP2586
Small Package, High Performance,
Asynchronies Boost for WLED Driver
DESCRIPTION
The EUP2586 is a high frequency, asynchronous boost
converter designed for driving white LED arrays. With
integrated 0.19 power switch and 2A current limit,
the EUP2586 provides enough driving capability for
7”~10” LCD backlighting(13 strings of 3 or 4 LEDs
each). The device uses current mode, fixed frequency
architecture to regulate the LED current, which is
measured through an external current sense resistor. Its
low 200mV feedback voltage reduces power loss and
improves efficiency.
With the built-in over-voltage protection function
(OVP), the SW pin monitors the output voltage and
turn off the device if an over-voltage condition is
present due to an open circuit condition. Other features
include soft start, over-current limiting, thermal
protection and under-voltage lockout.
The EUP2586 is available in the tiny TSOT23-5
package to provide the best solution for PCB space
saving and total BOM cost.
FEATURES
2.6V to 5.5V Input Range
Internal 0.19 , 18V MOSFET Switch
High Efficiency Up to 93%
Lower Surface Temperature at ILED=180mA
1MHz Switching Frequency
2A Current Limit
Open LED Overvoltage Protection
Internal Soft-Start
PWM and DC Dimming Control
Available in TSOT23-5 Package
RoHS Compliant and 100% Lead (Pb)-Free
Halogen-Free
APPLICATIONS
7” to 10” LCD Panels
MID Backlighting
Netbook Backlighting
Portable Media Players
GPS Navigation Systems
Typical Application Circuit
Figure 1. EUP2586 PWM Dimming Application for White LED Driver
DS2586
Ver1.0
Feb. 2012
1
EUTECH [ EUTECH MICROELECTRONICS INC ]
