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EUP2538JIR1 Datasheet(PDF) 1 Page - Eutech Microelectronics Inc |
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EUP2538JIR1 Datasheet(HTML) 1 Page - Eutech Microelectronics Inc |
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1 / 11 page  EUP2538 DS2538 Ver1.3 Nov. 2008 1 10X2 Strings WLED Boost Converter DESCRIPTION The EUP2538 is a constant current step-up converter specifically designed to drive white LEDs. The Step-up converter topology allows series connection of the white LEDs so the LED currents are identical for uniform brightness. The EUP2538 switches at 1MHz, allowing the use of tiny external components. The output capacitor can be as small as 0.47µF, saving space and cost versus alternative solutions. A low 0.3V feedback voltage minimizes power loss in the current setting resistor for better efficiency. The EUP2538 high-voltage output stage is perfect for driving mid-size and large panel displays containing up to ten white LEDs in series. The 1.2A current limit and 0.65Ω RDSON allows the part using for up to 10× 2 string WLED lighting. LED dimming can be done by using a DC voltage, a logic signal, or a pulse width modulation(PWM) signal. The enable input pin allows the device to be placed in shutdown mode with “zero” quiescent current. The EUP2538 is available in low profile 8pin 3mm × 3mm TDFN package. Typical Application Circuit FEATURES 2.6V to 5.5V Input Range 38V Output with Over Voltage Protection Internal Soft-Start PWM Dimming Control Internal High Power 40V MOSFET Switch Fast 1MHz Switching Frequency Using Low-Profile Inductors and Capacitors Available in 3mm ×3mm TDFN-8 Package RoHS Compliant and 100% Lead (Pb)-Free APPLICATIONS GPS Navigation Systems Portable Media Players Handheld Devices, Digital Camera Portable Game Machines Figure 1. White LED Application |
Similar Part No. - EUP2538JIR1 |
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Similar Description - EUP2538JIR1 |
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