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