Analog Devices MAX14915 Product Info

• 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 V_DD 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 T_A = 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

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 V_DD.

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

Applications

• Industrial Digital Outputs
• PLC Systems