MIC28511-2YFL-TR

The MIC28511 is a synchronous step-down switching regulator with internal power switches capable of providing up to 3A output current from a wide input supply range from 4.6V to 60V. 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 Hyper Speed Control® and HyperLight Load® architectures of the MIC28511 allow for high VIN (low VOUT) operation and ultra-fast transient response while reducing the required output capacitance and providing very good light-load efficiency. The MIC28511 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.

4.6V to 60V Operating Input Voltage Supply Up to 3A Output Current Integrated High-Side and Low-Side N-Channel MOSFETs HyperLight Load (MIC28511-1) and Hyper Speed Control (MIC28511-2) 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