Compact Industrial Octal High-Side Switch with Diagnostics

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.

Applications

* Industrial Digital Outputs * PLC Systems

* 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