|The Micrel MIC24085x family consists of a fixed-frequency, current-mode DC-DC converter with integrated power MOSFETs. The MIC24085x is optimized for +12 V rails and provides a flexible and cost-effective solution for distributed power systems and communication applications. The MIC24085A provides an adjustable output voltage from 0.9 V to 5.5 V; the MIC24085B/C/D/E/F provides fixed output voltages at 1.5 V, 1.8 V, 2.5 V, 3.3 V, and 5 V, respectively. The MIC24085 family of devices operates with an input voltage range of 4.5 V to 18 V and delivers 3 A of output current while operating at a fixed frequency of 1 MHz. Peak current mode architecture is used to provide fast transient response. At light load, the pulse frequency modulation (PFM) mode is used to boost overall efficiency.
The MIC24085 family improves system reliability by offering multiple protection features. These features include under-voltage lockout, internal soft start, cycle-by-cycle current limit, output overvoltage protection, and thermal shutdown. Other features include an enable input and a PG (Power Good) output. The MIC24085 family is available in a 16-pin 3 mm x 3 mm MLF package with a junction operating range from –40°C to +125°C. Datasheet