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MIC28304-2YMP Datasheet(PDF) 2 Page - Micrel Semiconductor |
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MIC28304-2YMP Datasheet(HTML) 2 Page - Micrel Semiconductor |
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2 / 39 page  Micrel, Inc. MIC28304 Ordering Information Part Number Switching Frequency Features Package Junction Temperature Range Lead Finish MIC28304-1YMP 200kHz to 600kHz HyperLight Load 64-pin 12mm × 12mm QFN –40°C to +125°C Pb-Free MIC28304-2YMP 200kHz to 600kHz Hyper Speed Control 64-pin 12mm × 12mm QFN –40°C to +125°C Pb-Free Pin Configuration 64-Pin 12mm × 12mm QFN (MP) (Top View) Pin Description Pin Number Pin Name Pin Function 1, 2, 3, 54, 64 GND Analog Ground. Ground for internal controller and feedback resistor network. The analog ground return path should be separate from the power ground (PGND) return path. 4 ILIM Current Limit Setting. Connect a resistor from SW (pin #4) to ILIM to set the over-current threshold for the converter. 5, 60 VIN Supply Voltage for Controller. The VIN operating voltage range is from 4.5V to 70V. A 0.47 μF ceramic capacitor from VIN (pin # 60) to AGND is required for decoupling. The pin # 5 should be externally connected to either PVIN or pin # 60 on PCB. 6, 40 to 48, 51 SW Switch Node and Current-Sense Input. High current output driver return. The SW pin connects directly to the switch node. Due to the high-speed switching on this pin, the SW pin should be routed away from sensitive nodes. The SW pin also senses the current by monitoring the voltage across the low-side MOSFET during OFF time. March 25, 2014 2 Revision 1.1 |
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