General Description
The Micrel MIC2164/-2/-3/C are constant-frequency, synchronous buck controllers featuring adaptive on-time control. The MIC2164/-2/-3/C are the first products in the new Hyper Speed Control™ family of buck controllers introduced by Micrel.

FEATUREs
• Hyper Speed Control™ architecture enables
    - High delta V operation (VHSD = 28V and VOUT = 0.8V)
    - Smaller output capacitors than competitors
• 3V to 28V input voltage
• Any CapacitorTM stable
    - Zero ESR to high ESR
• 25A output current capability
• 300kHz/600kHz/1MHz switching frequency
• Adaptive on-time mode control
• Adjustable output from 0.8V to 5.5V with ±1% (MIC2164/-2/-3) or ±3% (MIC2164C) FB accuracy
• Up to 95% efficiency
• Foldback current-limit and “hiccup” mode short-circuit protection
• 6ms Internal soft start
• Thermal shutdown
• Safe start-up into pre-biased loads
• –40°C to +125°C junction temperature range
• Available in 10-pin MSOP package

APPLICATIONs
• Set-top box, gateways and routers
• Printers, scanners, graphic cards and video cards
• Telecommunication, PCs and servers