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EP53A8LQI Datasheet(PDF) 1 Page - Enpirion, Inc. |
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EP53A8LQI Datasheet(HTML) 1 Page - Enpirion, Inc. |
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1 / 14 page  03651 12/16/2009 Rev:B EP53A8LQI/EP53A8HQI 1000mA Synchronous Buck Regulator with Integrated Inductor RoHS Compliant; Halogen Free www.enpirion.com Description The EP53A8LQI and EP53A8HQI are a 1000mA PowerSOC. The device integrates MOSFET switches, control, compensation, and the Inductor in an advanced 3mm x 3mm QFN Package. Integrated inductor ensures the complete power solution is fully characterized with the inductor carefully matched to the silicon and compensation network. . It 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. The EP53A8xQI 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. EP53A8LQI further has the option to use an external voltage divider. EP53A8xQI 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 • 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 • Wireless broad band data cards • Solid state storage applications • Noise and space sensitive applications VIN VSENSE PVIN VS1 VS2 VS0 10 µF 0805 4.7 µF 0603 VOUT VOUT AGND ENABLE VFB PGND AVIN 100 ohm Figure 2: Typical Application Circuit. |
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