MIC28303 Datasheet | Microchip Technology

Features - Easy to Use - Stable with Low-Equivalent Series Resistance (ESR) Ceramic Output Capacitor - No Inductor and No pensation to Choose - 4.5V to 50V Input Voltage - Single-Supply Operation - Power Good (PG) Output - Low Radiated Emission (EMI) per EN55022, Class B - Adjustable Current Limit - Adjustable Output Voltage from 0.9V to 24V (Also Limited by Duty Cycle) - 200 k Hz to 600 k Hz, Programmable Switching Frequency - Supports Safe Start-Up into a Prebiased Output - - 40°C to +125°C Junction Temperature Range - Available in 64-pin, 12 mm × 12 mm × 3 mm QFN Package Applications - Distributed Power Systems - Industrial - Medical - Tele - Automotive General Description MIC28303 is synchronous step-down regulator module, featuring a unique adaptive ON-time control architecture. The module incorporates a DC/DC controller, power MOSFETs, bootstrap diode, bootstrap capacitor and an inductor in a single package. The MIC28303 operates over an input supply range from 4.5V-50V and can be used to supply up to 3A of output current. The output voltage is adjustable down to 0.8V with an accuracy of ±1%. The device operates with programmable switching frequency from 200 k Hz-600 k Hz. The MIC28303-1 uses Hyper Light Load® architecture for improved efficiency at light loads. The MIC28303-2 uses Hyper Speed Control® for ultra-fast transient response. The MIC28303 offers a full suite of protection features . These include undervoltage lockout, internal soft-start, foldback current limit, hiccup mode short-circuit protection and thermal shutdown. Typical Application Circuit MIC28303 12x12 QFN R19 75kΩ PG PVDD ANODE BSTC BSTR PVIN EN FREQ VOUT ILIM FB PGOOD GND PGND VIN 4.5V to 50V C2,C3...