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MIC28513 Datasheet(PDF) 1 Page - Microchip Technology |
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MIC28513 Datasheet(HTML) 1 Page - Microchip Technology |
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1 / 34 page  2016 Microchip Technology Inc. DS20005522A-page 1 MIC28513 Features • 4.6V to 45V Operating Input Voltage Supply • Up to 4A Output Current • Integrated High-Side and Low-Side N-Channel MOSFETs • HyperLight Load (MIC28513-1) and Hyper Speed Control (MIC28513-2) Architecture • Enable Input and Power Good (PGOOD) Output • Programmable Current-Limit and Foldback “Hiccup” Mode Short-Circuit Protection • Built-In 5V Regulator for Single-Supply Operation • Adjustable 200 kHz to 680 kHz Switching Frequency • Fixed 5 ms Soft-Start • Internal Compensation and Thermal Shutdown • Thermally-Enhanced 24-Pin 3 mm x 4 mm FQFN Package • –40°C to +125°C Junction Temperature Range Applications • Industrial Power Supplies • Distributed Supply Regulation • Base Station Power Supplies • Wall Transformer Regulation • High-Voltage Single-Board Systems General Description The MIC28513 is a synchronous step-down switching regulator with internal power switches capable of providing up to 4A output current from a wide input supply range from 4.6V to 45V. The output voltage is adjustable down to 0.8V with a guaranteed accuracy of ±1%. A constant switching frequency can be programmed from 200 kHz to 680 kHz. The MIC28513’s Hyper Speed Control® and HyperLight Load® architectures allow for high VIN (low VOUT) operation and ultra-fast transient response while reducing the required output capacitance. The MIC28513-1’s HyperLight Load architecture also provides very good light load efficiency. The MIC28513 offers a full suite of features to ensure protection under fault conditions. These include undervoltage lockout to ensure proper operation under power sag conditions, internal soft-start to reduce inrush current, foldback current limit, “hiccup” mode short-circuit protection, and thermal shutdown. Package Type MIC28513 24-Pin 3 mm x 4 mm FQFN (FL) DL PGND DH PVIN LX BST PVDD VDD ILIM VIN EN PGOOD 7 8 910 11 12 18 17 16 15 14 13 24 23 22 21 20 19 1 2 3 4 5 6 PVIN PVIN FB AGND 45V, 4A Synchronous Buck Regulator |
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