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MIC24085 Datasheet

Part Number MIC24085
Manufacturers Micrel Semiconductor
Logo Micrel Semiconductor
Description 18V 3A 1MHz High-Performance Integrated FET Buck Regulator
Datasheet MIC24085 DatasheetMIC24085 Datasheet (PDF)

MIC24085 18V, 3A, 1MHz, High-Performance, Integrated FET Buck Regulator in Tiny 3mm × 3mm QFN General Description Micrel’s MIC24085 is a constant-frequency, current-mode PWM buck regulator with integrated switchers. The MIC24085 is targeted for cost-sensitive and highperformance applications. The MIC24085 operates over a supply range of 4.5V to 18V at a fixed 1MHz switching frequency and can be used to provide up to 3A of output current. The output voltage is adjustable down to 0.9V. The MIC240.

  MIC24085   MIC24085






18V 3A 1MHz High-Performance Integrated FET Buck Regulator

MIC24085 18V, 3A, 1MHz, High-Performance, Integrated FET Buck Regulator in Tiny 3mm × 3mm QFN General Description Micrel’s MIC24085 is a constant-frequency, current-mode PWM buck regulator with integrated switchers. The MIC24085 is targeted for cost-sensitive and highperformance applications. The MIC24085 operates over a supply range of 4.5V to 18V at a fixed 1MHz switching frequency and can be used to provide up to 3A of output current. The output voltage is adjustable down to 0.9V. The MIC24085 provides the features of low standby current at 10µA, device enable, input undervoltage lockout, and output voltage monitoring. The part also provides fault protections of overcurrent and overtemperature. The MIC24085 is available in a 16-pin 3mm × 3mm QFN package with a junction operating range from –40°C to +125°C. Datasheets and support documentation are available on Micrel’s web site at: www.micrel.com. Features • • • • • • • • • • • • • • • Input voltage range 4.5V to 18V 3A output current 1MHz switching frequency 0.9V reference voltage with ±1.5% accuracy Fixed output voltages are available at: 1.5V/1.8V/2.5V/3.3V/5V Peak current-mode PWM with internal compensation PFM mode for light load efficiency 10µA typical shutdown current 4ms internal soft start Cycle-by-cycle current limit with frequency foldback Output overvoltage protection Enable input/power-good (PG) output Thermal-shutdown protection –40°C to +125°C junction temperature range Available in 16-pin 3mm × 3mm QFN pac.


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