The MIC5201 is an efficient linear voltage regulator with very low dropout voltage (typically 17mV at light loads and 200mV at 100mA) and very low ground current (1mA at 100mA output), offering better than 1% initial accuracy with a logic-compatible on-off switching input. Designed especially for handheld battery-powered devices, the MIC5201 can be switched by a CMOS- or TTL-compatible enable signal. This enable control may be connected directly to VIN if unneeded. When disabled, power consumption drops nearly to zero. The ground current of the MIC5201 increases only slightly in dropout, further prolonging battery life. Key MIC5201 features include current limiting, over-temperature shutdown, and protection against reversed battery. The MIC5201 is available in several fixed voltages and accuracy configurations. It features the same pinout as the LT1121 with better performance.High output voltage accuracy Variety of output voltages Guaranteed 200mA output Low quiescent current Low dropout voltage Extremely tight load and line regulation Very low temperature coefficient Current and thermal limiting Reversed battery protection Load-dump protection (fixed voltage versions) Zero off-mode current state Logic-controlled electronic enable Available in SO-8 and SOT-223 packages