General Description
The MIC5191 is an ultra high-speed linear regulator. It uses an external N-Channel FET as its power device.
The MIC5191s ultra high-speed abilities can handle the fast load demands of microprocessor cores, ASICs, and other high-speed devices. Signal bandwidths of greater than 500 kHz can be achieved with a minimum amount of capacitance while at the same time keeping the output voltage clean, regardless of load demand. A powerful output driver delivers large MOSFETs into their linear regions, achieving ultra-low dropout voltage.

Features
• Input voltage range: VIN = 1.0V to 5.5V
• +1.0% initial output tolerance
• Dropout down to 25mV@10A
• Filters out switching frequency noise on input
• Very high large signal bandwidth >500kHz
• PSRR >40dB at 500kHz
• Adjustable output voltage down to 1.0V
• Stable with any output capacitor
• Excellent line and load regulation specifications
• Logic controlled shutdown
• Current limit protection
• 10-pin MLF® and MSOP-10 packages
• Available –40°C to +125°C junction temperature

Applications
• Distributed power supplies
• ASIC power supplies
• DSP, µP, and µC power supplies