General Description
The MIC2199 is a high-power 300kHz synchronous buck DC-to-DC controller housed in a small 4mm×4mm MLF™ 12-pin package. The MIC2199 operates from a wide 4.5V to 32V input and can be programmed for output voltages from 0.8V to 6V. The wide input voltage capability makes the MIC2199 an ideal solution for point-of-load DC-to-DC conversion in 5V, 12V, 24V, and 28V systems.

Features
•  4.5V to 32V input range
•  4mm×4mm MLF™ package
•  300kHz PWM operation
•  95% efficiency
•  Output voltage adjustable down to 0.8V
•  20A output current capability
•  Drives all N-Channel MOSFETs
•  Logic controlled micropower shutdown
•  Cycle-by-cycle current limiting
•  Adjustable undervoltage lockout
•  Frequency foldback overcurrent protection

Applications
•  Point-of-load DC-to-DC conversion from 5V, 12V, 24V, 28V supplies
•  Telecom equipment
•  Wireless modems
•  Servers
•  Base stations