LTC1255

Features:

`Fully Enhances N-Channel Power MOSFETs
`12A Standby Current
`Operates at Supply Voltages from 9V to 24V
`Short Circuit Protection
`Easily Protected Against Supply Transients
`Controlled Switching On d OFF Times
`No External Charge Pump Components
`Compatible With Standard Logic Families
`Available in Pin IC


Application

·Solenoid Drivers
·DC Motor Drivers
·Stepper Motor Drivers
·Lamp Drivers/Dimmers
·Relay Drivers
·Low Frequency H-Bridge
·P-Channel Switch Replacement


Pinout




Specifications

Supply Voltage ......................................... 0.3V to 30V
Transient Supply Voltage (< 10ms) ......................... 40V
Input Voltage ..................... (VS + 0.3V) to (GND 0.3V)
Gate Voltage ...................... (VS + 20V) to (GND 0.3V)
Current (Any Pin)................................................... 50mA
Operating Temperature Range
LTC1255C................................................. 0°C to 70°C
LTC1255I ........................................... 40°C to 85°C
Storage Temperature Range ............. 65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C


Description

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 12A s tandby 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.