General Description

The MAX14916 and MAX14916A are equipped with eight high-side switches with an on-resistance of only 120mΩ (typ), or 250mΩ (max) at 125°C ambient temperature. Each channel is specified to handle up to 1.1A (MAX14916) or 1.5A (MAX14916A) of continuous current. Similarly, two adjacent channels can be driven together to form four 2.4A (MAX14916) or 3A (MAX14916A) switches.

The SPI interface has a built-in chip addressing decoder, allowing communication with up to four MAX14916 or MAX14916A devices utilizing a common SPI chip select (CS).

The SPI interface provides flexibility for global and

per-channel configuration and diagnostic, including undervoltage detection, open-wire detection, overload and current limiting reporting, thermal conditions reporting, and more.

Each channel is equipped with open-wire detection that can detect an open-load in both switch 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 single TVS on VDD. Integrated surge protection works for quad and octal configuration.

The MAX14916 and MAX14916A are available in a compact 48-pin 6mm x 6mm QFN package.

Benefits and Features

●MAX14916 Current Limit, 1.1A (min) or 1.38A (typ)

●MAX14916A Current Limit, 1.5A (min) or 2A (typ)

●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

•Open-Wire Detection, with Switches Both in ON and OFF States

•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

●Industrial Digital Outputs

●PLC Systems