EUP2586 EUTECH | Alldatasheet
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Technical content
DS2586 Ver1.0 Feb. 2012 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 Ω 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
/circle6 2.6V to 5.5V Input Range /circle6 Internal 0.19 Ω, 18V MOSFET Switch /circle6 High Efficiency Up to 93% /circle6 Lower Surface Temperature at ILED=180mA /circle6 1MHz Switching Frequency /circle6 2A Current Limit /circle6 Open LED Overvoltage Protection /circle6 Internal Soft-Start /circle6 PWM and DC Dimming Control /circle6 Available in TSOT23-5 Package /circle6 RoHS Compliant and 100% Lead (Pb)-Free Halogen-Free
APPLICATIONS
/circle6 7” to 10 ” LCD Panels /circle6 MID Backlighting /circle6 Netbook Backlighting /circle6 Portable Media Players /circle6 GPS Navigation Systems Typical Application Circuit Figure 1. EUP2586 PWM Dimming Application for White LED Driver