LT1910

PRODUCTION

Protected High Side MOSFET Driver

Data Sheet (Rev. C) Product Selection Table
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Overview

  • 8V to 48V Power Supply Range
  • Protected from –15V to 60V Supply Transients
  • Short-Circuit Protected
  • Automatic Restart Timer
  • Open-Collector Fault Flag
  • Fully Enhances N-Channel MOSFET Switches
  • Programmable Current Limit, Delay Time and Autorestart Period
  • Voltage Limited Gate Drive
  • Defaults to Off State with Open Input
  • Available in SO-8 Package

The LT1910 is a high side gate driver that allows the use of low cost N-channel power MOSFETs for high side switching applications. It contains a completely self-contained charge pump to fully enhance an N-channel MOSFET switch with no external components.

When the internal drain comparator senses that the switch current has exceeded the preset level, the switch is turned off and a fault flag is asserted. The switch remains off for a period of time set by an external timing capacitor and then automatically attempts to restart. If the fault still exists, this cycle repeats until the fault is removed, thus protecting the MOSFET. The fault flag becomes inactive once the switch restarts successfully.

The LT1910 has been specifically designed for harsh operating environments such as industrial, avionics and automotive applications where poor supply regulation and/or transients may be present. The device will not sustain damage from supply transients of –15V to 60V.

The LT1910 is available in the SO-8 package.

Applications

  • Industrial Control
  • Avionics Systems
  • Automotive Switches
  • Stepper Motor and DC Motor Control
  • Electronic Circuit Breaker
LT1910
Protected High Side MOSFET Driver
Fault Protected High Side Switch Switch Drop vs Load Current Product Package 1
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Documentation

Data Sheet 1

Reliability Data 1

User Guide 1

Application Note 1

Technical Articles 2

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Software Resources

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Hardware Ecosystem

Parts Product Life Cycle Description
Protection Switches & Controllers 2
LT4256-1
LT4256-2
Positive High Voltage Hot Swap Controllers
LT4363
RECOMMENDED FOR NEW DESIGNS High Voltage Surge Stopper with Current Limit
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Tools & Simulations

LTspice 1

Models for the following parts are available in LTspice:

  • LT1910
LTspice

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

Evaluation Kits

eval board
schematic 1
schematic 2
schematic 3
schematic 4
schematic 5
DC2307A

LT1910ES8 Demo Board | Fault-Protected High Side Driver; 8V ≤ VSUPPLY ≤ 48V, IOUT Up to 5A

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Product Details

Demonstration circuit 2307A is a high input voltage protected high side MOSFET driver featuring the LT1910ES8. This demo board has a wide input voltage range from 8V to 48V and is capable of protecting a voltage source against a short circuit. The LT1910 has a 50mV trip point for the selection of the current sense resistor RS1. The value of RS1 is 0.01Ω in this demo board which allows the output to deliver up to 5A. However, the RS1 footprint supports multiple sizes and can be replaced with up to a 2W device.
DC2307A
LT1910ES8 Demo Board | Fault-Protected High Side Driver; 8V ≤ VSUPPLY ≤ 48V, IOUT Up to 5A
DC2307A Demo Board DC2307A Demo Board DC2307A Demo Board DC2307A Demo Board DC2307A - Schematic

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