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Compact Industrial Octal 1A/Quad 2A High-Side Switch with Diagnostics

Industry's Smallest Octal Industrial 1A/Quad 2A High Side Switch with Diagnostics

Product Details

The MAX14916 has eight high-side switches specified to deliver up to 1.1A (min) continuous current per channel. The two adjacent channels can be paralleled to form four 2.4A high-side switches. 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 MAX14916s utilizing a common SPI chip select (active-low CS pin pulled low).

The SPI interface provides flexibility for global and per-channel configuration and diagnostic, including 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. Integrated surge protection works for quad and octal configuration.

The MAX14916 is available in a compact 48-pin 6mm x 6mm QFN package.

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
    • 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
Parametric specs for Digital I/O
Digital Input/Output Digital Output
Interface Type Serial
# Channels 8
VSUPPLY (V) (min) 10
VSUPPLY (V) (max) 36
ISUPPLY (µA) (typ) 2
Current Limit (A) (min) 1.1
Current Limit (A) (max) 1.7
Load Current (A) (max) 1.1
Oper. Temp. (°C) -40 to +125
Package/Pins FC2QFN/48
Budgetary
Price (See Notes)
$4.53 @1k
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Simplified Block Diagram

MAX14916: Simplified Block Diagram MAX14916: Simplified Block Diagram Zoom icon

Technical Docs

Design & Development

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Description

The MAX14916 evaluation kit (EV kit) provides a proven design to evaluate the MAX14916, 2.4A (min) quad highside switch with extended diagnostics. The EV kit includes the MAX14916 evaluation board and a graphical user interface (GUI) that provides communication from a PC to the target device through a USB port and the USB2GPIO interface board. The USB2GPIO EV kit should be ordered separately.

The GUI is compatible with Windows 10 for exercising the features of the MAX14916 IC. The EV kit GUI allows individually controlling of eight high-side switches, which hardware configured for quad high-current operation, through the high-speed SPI interface and receive a diagnostic information from the MAX14916, including open-wire/ open-load conditions, state of the output channels, multiple undervoltage alarms, global and per channel overtemperature alarms, and multiple fault alarms.

The MAX14916 EV kit must be powered from an external +24V power supply and can consume more than 10A when fully loaded. The USB2GPIO interface board is powered from the USB port.

The MAX14916 EV kit board comes with a MAX14916AFM+ installed in a 48-pin, 6 x 6mm FC2QFN package.

View Details

Features

  • Robust Operation with Wide Range Of Input Voltages and Load Conditions
  • VDDOK Indication
  • LED Indication of Channels Status and Fault Conditions
  • Fast Inductive Load Demagnetization
  • Open-wire, Overload, Undervoltage, Overcurrent, Thermal Shutdown Fault Conditions Indication
  • Supports Watchdog and SYNCH Features
  • Communication Error Indication
  • Wide Logic Voltage Range
  • Pin Addressable SPI Communication
  • -40°C to +125°C Temperature Range
  • Proven PCB Layout
  • Fully Assembled and Tested
  • Windows 10 Compatible Software

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Support & Training

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Parameters

Parametric specs for Digital I/O
Digital Input/Output Digital Output
Interface Type Serial
# Channels 8
VSUPPLY (V) (min) 10
VSUPPLY (V) (max) 36
ISUPPLY (µA) (typ) 2
Current Limit (A) (min) 1.1
Current Limit (A) (max) 1.7
Load Current (A) (max) 1.1
Oper. Temp. (°C) -40 to +125
Package/Pins FC2QFN/48
Budgetary
Price (See Notes)
$4.53 @1k

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
    • 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 MAX14916 has eight high-side switches specified to deliver up to 1.1A (min) continuous current per channel. The two adjacent channels can be paralleled to form four 2.4A high-side switches. 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 MAX14916s utilizing a common SPI chip select (active-low CS pin pulled low).

The SPI interface provides flexibility for global and per-channel configuration and diagnostic, including 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. Integrated surge protection works for quad and octal configuration.

The MAX14916 is available in a compact 48-pin 6mm x 6mm QFN package.

Simplified Block Diagram

MAX14916: Simplified Block Diagram MAX14916: 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