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

FEATUREs
• Hyper Speed ControlTM architecture enables
    - High delta V operation (VIN=28V and VOUT=0.8V)
    - Smaller output capacitors than competitors
• 3V to 28V input voltage
• Stable with zero-ESR output capacitor
• 25A output current capability
• 300kHz/600kHz/1MHz switching frequency
• Adaptive on-time mode control
• Output down to 0.8V with ±1% FB accuracy
• Up to 95% efficiency
• Foldback current limit and “hiccup” mode short-circuit protection
• 6ms Internal soft start
• Thermal shutdown
• Pre-bias output safe
• –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
• Microprocessor core supply
• Low-voltage distributed power