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EP53A7LQ Datasheet(PDF) 1 Page - Enpirion, Inc. |
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EP53A7LQ Datasheet(HTML) 1 Page - Enpirion, Inc. |
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1 / 17 page  01543 11/11/2009 Rev:B EP53A7LQI/EP53A7HQI 1000mA Synchronous Buck Regulator with Integrated Inductor RoHS Compliant; Halogen Free www.enpirion.com Description The EP53A7xQI (x = L or H) is a 1000mA PowerSOC. The EP53A7xQI integrates MOSFET switches, control, compensation, and the magnetics in an advanced 3mm x 3mm QFN Package. Integrated magnetics enables a tiny solution footprint, low output ripple, low part-count, and high reliability, while maintaining high efficiency. The complete solution can be implemented in as little as 21mm2. A proprietary light load mode (LLM) provides high efficiency in light load conditions. The EP53A7xQI uses a 3-pin VID to easily select the output voltage setting. Output voltage settings are available in 2 optimized ranges providing coverage for typical VOUT settings. The VID pins can be changed on the fly for fast dynamic voltage scaling. EP53A7LQI further has the option to use an external voltage divider. The EP53A7xQI offers the optimal combination of very small solution footprint and advanced performance features. EP53A7xQI 4.7uF 10uF 6mm 3.5mm 100 Ohm Figure 1: Total Solution Footprint Features • Integrated Inductor Technology • 3mm x 3mm x 1.1mm QFN package • Total Solution Footprint < 21mm2 • Low VOUT ripple for RF compatibility • High efficiency, up to 94% • 1000mA continuous output current • 55µA quiescent current • Less than 1µA standby current • 5 MHz switching frequency • 3 pin VID for glitch free voltage scaling • VOUT Range 0.6V to VIN – 0.5V • Short circuit and over current protection • UVLO and thermal protection • IC level reliability in a PowerSOC solution Application • Portable wireless and RF applications • Solid state storage applications • Space constrained applications requiring high efficiency and very small solution size VIN VSENSE PVIN VS1 VS2 VS0 10 μF 4.7 μF VOUT VOUT AGND ENABLE VFB PGND AVIN LLM 100 ohm Figure 2: Typical Application Schematic |
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