Linear Technology Intros LTC2950 Push-Button Controller

Linear Technology Corp. (LTC, Milpitas, CA) introduced its new LTC2950, a push-button controller that provides enable control for dc-dc converters, processor interrupt logic and adjustable on/off timers. The part solves the inherent bounce problem associated with all mechanical contacts, while also enabling power supply converters and releasing a processor once the supply is fully powered up.

When powering off, the LTC2950 interrupts the system processor to alert it to perform the necessary power down and housekeeping tasks. Once the system completes the turn-off operations, it can command the LTC2950 to immediately disable power. Offered in a eight-pin, 2 mm x 3 mm DFN package, the LTC2950 saves design time and board space for portable instruments and hand-held products.

The LTC2950 operates over a wide 2.7 V to 26 V input-voltage range to accommodate a wide variety of input power supplies. The low 6 µA supply current makes the IC suitable for battery-powered applications. Two versions of the LTC2950 are available to accommodate either positive or negative enable polarities. The rugged push-button input pin is designed to operate in noisy environments and it can withstand ESD strikes of up to ±10 kV.

Specified over the commercial and industrial temperature range and available from stock, pricing begins at $1.75 each for 1,000-piece quantities.