MAX22910

RECOMMENDED FOR NEW DESIGNS

21mΩ, 80V High-Side Switch with Advanced Diagnostics and Load Current Monitoring

Data Sheet (Rev. 1) Product Selection Table
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Overview

  • Reduced Power and Heat Dissipation
    • 40mΩ (max) On-Resistance at TA = 125°C
    • 1.2mA (typ) Supply Current with No Load
    • Adjustable Output Current Limit from 0.7A to 9A
  • Robustness and Advanced Diagnostics
    • 80V Maximum Supply Range
    • Independent Load Current Monitor Output
    • ±6% (max) Accuracy in Monitoring Load Current more than 700mA
    • Open-Wire Detection with Switch Closed
    • Adjustable Open-Wire Detection Threshold
    • Thermal Overload and Short-Circuit Protection
    • Overload Diagnostic Output
    • -40°C to +125°C Ambient Operating Temperature
  • High-Speed Operation
    • 110μs (max) Turn-On Propagation Delay
    • <1μs (typ) IMON Response Time
  • Flexibility Design
    • Supply Voltage VDD from 4.75V to 80V
    • Logic Voltage Interface VL from 1.6V to 5.5V
    • Compact 4.5mm x 5.75mm FC2QFN

The MAX22910 is an industrial high-side switch that operates as a current sourcing output device. The highside switch has an on-resistance RON of 21mΩ (typ) and 40mΩ (max). The maximum load current is limited and set via the CURLIM resistor in the range of 0.7A to 9A with ±10% accuracy. At +100°C ambient temperature, the maximum continuous load current is up to 7A.

The MAX22910 is specified for operation up to 80V (max) supply voltage if OUT does not go below GND. The VL logic supply allows flexible logic interface levels in the range of 1.6V to 5.5V.

Open-wire detection detects wiring faults when the switch is on for load current below a threshold in the range of 1mA to 7mA, as set by the WBSET resistor.

Accurate load current monitoring at the IMON current output monitors the load current with ±4% accuracy between 2A and 9A and with ±6% accuracy between 0.7A and 2A when the device is not in the current limit.

The MAX22910 is protected against short-circuits, overcurrent, and thermal overload. Achieve fast load turn-off time by connecting an external TVS diode at OUT with a high clamp voltage to clamp inductive kickback energy.

The MAX22910 is available in a compact 4.5mm x 5.75mm FC2QFN package and is specified for operation from -40°C to +125°C ambient temperature.

APPLICATIONS

  • Industrial Digital Output Modules
  • Safety Output Modules
  • Commercial Vehicle Controllers
  • Motor Holding Brakes
MAX22910
21mΩ, 80V High-Side Switch with Advanced Diagnostics and Load Current Monitoring
MAX22910 Functional Block Diagram MAX22910 Simple Application Diagram MAX22910 Pin Configuration MAX22910 Pin Configuration
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Documentation

Data Sheet 1

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Hardware Ecosystem

Parts Product Life Cycle Description
LDO Linear Regulators 5
LT3013
RECOMMENDED FOR NEW DESIGNS 250mA, 4V to 80V Low Dropout Micropower Linear Regulator with PWRGD
LT3014
RECOMMENDED FOR NEW DESIGNS 20mA, 3V to 80V Low Dropout Micropower Linear Regulator
LT3012
RECOMMENDED FOR NEW DESIGNS 250mA, 4V to 80V Low Dropout Micropower Linear Regulator
LT3011
RECOMMENDED FOR NEW DESIGNS 50mA, 3V to 80V Low Dropout Micropower Linear Regulator with PWRGD
LT3010/LT3010-5
50mA, 3V to 80V Low Dropout Micropower Linear Regulator
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Evaluation Kits

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schematic 1
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MAX22910EVKIT

Evaluation Kit for MAX22910

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Features and Benefits

  • Robust Operation with Wide Range of Input Voltage up to +80V (max) and Load Current up to 9A (max)
  • Safe Inductive Load Switching with Output Clamping
  • Optional VDD-reference Output Clamping Diode
  • Wire-Break and Overload Fault LED Indications
  • On-Board Isolation between Logic and Field Sides
  • On-Board 3.3V LDO to Supply Logic Input
  • ±2kV Surge Transients, ±8kV Contact, and ±15kV Airgap ESD Protection
  • ±4kV EFT Burst and 10VRMS, 10kHz to 80MHz RF Conducted Immunity
  • -40°C to +125°C Operating Temperature Range
  • Proven PCB Layout
  • Fully Assembled and Tested

Product Details

The MAX22910 evaluation kit (EV kit) provides a proven design to evaluate the MAX22910, a 21mΩ single-channel high-side switch with advanced diagnostics for industrial applications. The EV kit is powered from an external power supply at VDD, while the on-board LT3014 LDO generates a 3.3V for the logic input level of the MAX22910. The logic level can be set with an external power supply at VL, alternatively. The EV kit is preinstalled with ADuM342E0, a four-channel digital isolator with default-low output. It provides digital isolation between the field and logic sides for logic control I/Os.

The MAX22910 EV kit comes with an output clamping diode installed to protect the device from negative kickback voltage during switching off the inductive loads. The EV kit is specified for EMC protection against surge and ESD transients, EFT, and RF conducted immunity.

The MAX22910 EV kit comes with MAX22910AFZ+ installed in a compact 4.5mm x 5.75mm FC2QFN package. The EV kit is specified for operation with up to +60V supply voltage at VDD and from -40°C to +125°C operating temperature range.
MAX22910EVKIT
Evaluation Kit for MAX22910
MAX22910EVKIT Board Photo Angle View MAX22910EVKIT Board Photo Top View MAX22910EVKIT Board Photo Bottom View

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