Description:
The MIC5219 is an efficient linear voltage regulator with high peak output current capability, very-low-dropout voltage, and better than 1% output voltage accuracy. Dropout is typically 10mV at light loads and less than 500mV at full load. The MIC5219 is designed to provide a peak output current for start-up conditions where higher inrush current is demanded. It features a 500mA peak output rating. Continuous output current is limited only by package and layout. The MIC5219 can be enabled or shut down by a CMOS or TTL compatible signal. When disabled, power consumption drops nearly to zero. Dropout ground current is minimized to help prolong battery life. Other key features include reversed battery protection, current limiting, overtemperature shutdown, and low noise performance with an ultra-low-noise option.
Application:
Laptop, notebook, and palmtop computers
Cellular telephones and battery-powered equipment
Consumer and personal electronics
PC Card VCC and VPP regulation and switching
SMPS post-regulator/DC-to-DC modules
High-efficiency linear power supplies
Features:
500mA output current capability
output voltage: 5v
SOT-23-5
Low 500mV maximum dropout voltage at full load
Extremely tight load and line regulation
Tiny SOT-23-5 package
Ultra-low-noise output
Low temperature coefficient
Current and thermal limiting
Reversed-battery protection
CMOS/TTL-compatible enable/shutdown control
Near-zero shutdown current