LT1106
Key Features
- Internal logic simplifies the interface to PCMCIA card microcontrollers
- One input selects a 12V or 5V regulated output, while another input controls micropower shutdown
- Two logic outputs indicate when the selected programming voltage is valid and whether the input supply is 3.3V or 5V
- The regulator features Burst ModeTM operation with a 0.5A, 300mV switch for efficiency up to 85%
- High frequency 500kHz switching permits the use of small value, flat inductors that fit neatly on PCMCIA cards
- The device requires just 1µF of output capacitance
- Quiescent current is 750µA which drops to 350µA when the card runs off the socket supply
- The shutdown pin reduces supply current to only 10µA
- The device includes a soft start feature which limits supply current transients when the card is inserted into a hot socket
- LTC and LT are registered trademarks of Linear Technology Corporation
