|Micrel, Inc.'s MIC26950 is a constant frequency, synchronous buck regulator featuring a unique digitally modified adaptive ON-time control architecture. The MIC26950 operates over an input supply range of 4.5V to 26V and provides a regulated output at up to 12A of output current. The output voltage is adjustable down to 0.8V with a typical accuracy of ±1%, and the device operates at a switching frequency of 300kHz.
Micrel’s Hyper Speed Control™ architecture allows for ultra-fast transient response while reducing the output capacitance. It also makes (High VIN)/(Low VOUT) operation possible. This digitally modified adaptive tON ripple control architecture combines the advantages of fixed frequency operation and fast transient response in a single device.
The MIC26950 offers a full suite of protection features to ensure protection of the IC during fault conditions. These features include undervoltage lockout to ensure proper operation under power-sag conditions, internal soft-start to reduce inrush current, fold-back current limit, “hiccup” mode short-circuit protection, and thermal shutdown.