Dual 24V High-Side MOSFET Driver

The LTC1255 dual high-side driver allows using low cost N-channel FETs for high-side industrial and automotive switching applications. An internal charge pump boosts the gate drive voltage above the positive rail, fully enhancing an N-channel MOS switch with no external components. Low power operation, with 12µA standby current, allows use in virtually all systems with maximum efficiency.

Included on-chip is independent overcurrent sensing to provide automatic shutdown in case of short circuits. A time delay can be added to the current sense to prevent false triggering on high in-rush current loads.

The LTC1255 operates from 9V to 24V supplies and is well suited for industrial and automotive applications.

The LTC1255 is available in both an 8-pin DIP and an 8-pin SOIC.

Applications

* Solenoid Drivers

* DC Motor Drivers

* Stepper Motor Drivers

* Lamp Drivers/Dimmers

* Relay Drivers

* Low Frequency H-Bridge

* P-Channel Switch Replacement

* Fully Enhances N-Channel Power MOSFETs * 12µA Standby Current * Operates at Supply Voltages from 9V to 24V * Short Circuit Protection * Easily Protected Against Supply Transients * Controlled Switching ON and OFF Times * No External Charge Pump Components * Compatible With Standard Logic Families * Available in 8-Pin SOIC