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Compact Industrial Octal High-Side Switch with Diagnostics

Industry's Smallest Octal Industrial High Side Switch with Diagnostics

Product Details

Key Features

Applications/Uses

Simplified Block Diagram

Technical Docs

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Key Features

  • Robustness and Smart Diagnostics
    • 65V Absolute Maximum Supply Range
    • Internal Clamps for Fast Inductive Load Demagnetization
    • CRC Error Checking on the SPI Interface
    • Watchdog Timer for Diagnostics Checking
    • Open-Wire Detection, Both with Switches On and Off
    • Undervoltage Detection with UVLO
    • Loss of VDD or GND Protection
    • Thermal Shutdown Protection
    • Integrated ±1kV/42Ω IEC61000-4-5 Surge Protection
    • -40°C to +125°C Operating Ambient Temperature
  • Reduces Power and Heat Dissipation
    • 250mΩ (Max) On-Resistance at TA = 125°C
    • 2mA (typ) Supply Current
    • Accurate Output Current Limiting
  • Flexibility
    • Addressable SPI Interface Reduces Isolation Cost
    • SYNCH Input for Simultaneous Update of Switches
    • LED Driver Matrix for 16 LEDs, Powered by 24V, 5V, or 3.3V
    • Flexible Logic Voltage Interface from 2.5V to 5.5V
  • Compact 6mm x 6mm QFN Package

Applications/Uses

  • Industrial Digital Outputs
  • PLC Systems

Description

The MAX14915 has eight high-side switches specified to deliver up to 700mA continuous current. The high-side switches have on-resistance of 250mΩ (max) at 125°C ambient temperature.

The SPI interface has a built-in chip addressing decoder, allowing communication with multiple MAX14915s utilizing a common SPI chip select (active-low CS).

The SPI interface provides flexibility for global and per-channel configuration and diagnostic, including over and undervoltage detection, open wire/load detection, overload and current limiting reporting, thermal conditions reporting, and more.

Open load detection detects both open-wire/open-load conditions with switches in the on and off states. LED drivers provide indication of per-channel fault, status, and supply undervoltage conditions. Internal active clamps allow for fast turn-off of inductive loads.

Integrated line-to-ground and line-to-line surge protection only requires a TVS on VDD.

The MAX14915 is available in a compact 48-pin 6mm x 6mm QFN package.

Simplified Block Diagram

MAX14915: Simplified Block Diagram MAX14915: Simplified Block Diagram Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .