The MAX17561/MAX17562/MAX17563 adjustable overvoltage and overcurrent-protection devices are ideal to protect systems against positive and negative input voltage faults up to ±40V and feature low 100mΩ (typ) RON FETs.The adjustable overvoltage protection range is between 6V and 36V, while the adjustable undervoltage protection range is between 4.5V and 24V. The overvoltage-lockout (OVLO) and undervoltage-lockout (UVLO) thresholds are set using optional external resistors. The factory-preset internal OVLO threshold is 33V (typ) and the preset internal UVLO threshold is 19.2V (typ).The ICs also feature programmable current-limit protection up to 4.2A. Once current reaches the threshold, the MAX17561 turns off after the 20.7ms (typ) blanking time and stays off during the retry period. The MAX17562 latches off after the blanking time, and the MAX17563 limits the current continuously. In addition, these devices feature reverse current and thermal-shutdown protection.The ICs are available in a small 14-pin TSSOP (5mm x 6.5mm) package and are specified over the extended -40°C to +125°C temperature range.How to Add Overvoltage and Overcurrent Protection Using the MAX17561—Part 1How to Add Overvoltage and Overcurrent Protection Using the MAX17561—Part 2ApplicationsBattery-Powered ApplicationsConsumer ElectronicsIndustrial EquipmentMarine Equipment

The MAX30112 is a complete optical pulse oximetry and heart rate detection integrated analog front-end. The MAX30112 has a high-resolution, optical readout signal-processing channel with built-in ambient light cancellation, as well as high-current LED driver DACs, to form a complete optical readout signal chain. With external LED(s) and photo diode(s), the MAX30112 offers the lowest power, highest performance heart rate detection solution for wrist applications.The MAX30112 operates on a 1.8V main supply voltage, with a separate 3.1V to 5.25V LED driver power supply. The device supports a standard I2C compatible interface, as well as shutdown modes through the software with near-zero standby current, allowing the power rails to remain powered at all times.ApplicationsFitness Wearable DevicesIn-Ear Wearable DevicesSpO2 Monitoring DevicesWrist-Worn Wearable Devices

For new designs, please refer to MAX22195 ›The MAX31914 translates and conditions the 24V digitaloutput of sensors and switches used in industrial,process, and building automation to 5V CMOS-compatiblesignals required by microcontrollers. It provides the frontendinterface circuit of a programmable logic controller(PLC) digital input module.The signal voltage translation is performed in conjunctionwith input current limiting and lowpass filtering. Inputcurrent limiting allows a significant reduction in powerconsumed from the field-supply voltage, as comparedto traditional discrete resistor-divider implementations.To achieve the lowest in-class power dissipation, the ICuses patent-pending circuit techniques to achieve furtherreduction of power dissipation beyond what is possibleby input current limiting alone. This special low-poweroperating mode is automatically activated when on-chiplowpass filtering is selected.Selectable on-chip lowpass filters allow flexible debouncingand filtering of sensor inputs based on the application.When no filtering is selected, the IC is capable of detectingpulses as short as 0.75μs at its field inputs.All 8 input channels are translated to CMOS logic levels andpresented in parallel on the eight output pins for direct orgalvanically isolated interface with a controller ASIC ormicro.The on-chip 5V voltage regulator can be used to powerexternal optocouplers, digital isolators, or other external5V circuitry.For low-cost applications, Maxim Integrated offers a pincompatible version of this device, the MAX31915, whichdoes not include the current-switching circuitry includedin the MAX31914.ApplicationsDigital Input Modules for Programmable Logic Controllers (PLCs)Industrial Automation, Building AutomationProcess Automation

DARWIN is a new breed of low-power microcontrollers built to thrive in the rapidly evolving Internet of Things (IoT). They are smart, with the biggest memories in their class and a massively scalable memory architecture. They run forever, thanks to wearable-grade power technology. They are also tough enough to withstand the most advanced cyberattacks. DARWIN microcontrollers are designed to run any application imaginable—in places where you would not dream of sending other micro controllers.Generation U microcontrollers are perfect for wearables and IoT applications that cannot afford to compromise power or performance. The MAX32620/MAX32621 feature an Arm® Cortex®-M4 with FPU CPU that delivers high-efficiency signal processing, ultra-low power consumption and ease of use.Flexible power modes, an intelligent PMU, and dynamic clock and power gating optimize performance and power consumption for each application. Internal oscillators run at 96MHz for high-performance or 4MHz to maximize battery life in applications requiring always-on monitoring.Multiple SPI, UART, I2C, 1-Wire® master, and USB interfaces are provided. The four-input, 10-bit ADC with selectable references can monitor external sensors.All versions provide a hardware AES engine. The MAX32621 is provides a secure trust protection unit (TPU) with a modular arithmetic accelerator (MAA) for fast ECDSA, a hardware PRNG entropy generator, and a secure boot loader. The MAX32620L provides a reduced 1MB of flash memory.This data sheet applies to revision C and later. Legacy mode operation provides compatibility with revision A.MAX32620 User's GuideMaxim Low Power ARM Micro Toolchain (Mac)Maxim Low Power ARM Micro Toolchain (Windows)ApplicationsFitness MonitorsPortable Medical DevicesSensor HubSport WatchesWearable Medical Patches

The MAX34417 is a specialized current and voltage monitor used to determine power consumption of portable systems. The device has a very wide dynamic range (20,000:1) that allows for the accurate measurement of power in such systems. The device is configured and monitored with a standard I2C/SMBus serial interface. The unidirectional current sensor offers precision high-side operation with a low full-scale sense voltage. The device automatically collects the current-sense and voltage samples and then multiplies those values to obtain a power value it then accumulates. Upon a command from the host, the device transfers the accumulated power samples, as well as the accumulation count, to a set of registers accessible by the host. This transfer occurs without missing a sample and allows the host to retrieve the data not in real-time, but at any time interval. Watch video: Introducing the MAX34417 Evaluation KitApplicationsServersSmartphonesTabletsUltra Notebooks

The MAX34417 is a specialized current and voltage monitor used to determine power consumption of portable systems. The device has a very wide dynamic range (20,000:1) that allows for the accurate measurement of power in such systems. The device is configured and monitored with a standard I2C/SMBus serial interface. The unidirectional current sensor offers precision high-side operation with a low full-scale sense voltage. The device automatically collects the current-sense and voltage samples and then multiplies those values to obtain a power value it then accumulates. Upon a command from the host, the device transfers the accumulated power samples, as well as the accumulation count, to a set of registers accessible by the host. This transfer occurs without missing a sample and allows the host to retrieve the data not in real-time, but at any time interval. Watch video: Introducing the MAX34417 Evaluation KitApplicationsServersSmartphonesTabletsUltra Notebooks

The MAX35101 is a time-to-digital converter with built-inamplifier and comparator targeted as a complete analogfront-end (AFE) solution for the ultrasonic heat meter andflow meter markets.With a time measurement accuracy of 20ps and automaticdifferential time-of-flight (TOF) measurement, thisdevice makes for simplified computation of liquid flow.Early edge detection ensures measurements are madewith consistent wave patterns to greatly improve accuracyand eliminate erroneous measurements.Multihit capability with stop-enable windowing allowsthe device to be fine-tuned for the application. Internalanalog switches, an autozero amplifier/comparator, real-timeclock (RTC), and programmable receiver sensitivityprovide the analog interface and control for a minimalelectrical bill of material solution. The RTC provides anevent timing mode that is configurable and runs cyclicalgorithms to minimize microprocessor interactivity andincrease battery life.Built-in arithmetic logic unit provides TOF difference measurements.A programmable receiver hit accumulator canbe utilized to minimize the host microprocessor accessand thus minimize current consumption.For temperature measurement, the MAX35101 supportsup to four (4) 2-wire PT1000/500 platinum resistive temperaturedetectors (RTD).A simple 4-wire SPI interface allows any microcontrollerto effectively configure the device for its intendedmeasurement.On-board 8KB user flash allows the MAX35101 to benonvolatile-configurable and provide nonvolatile energyuse data to be logged. Configuration can be recalled anytimewith a SPI command. ApplicationsUltrasonic Gas MetersUltrasonic Heat MetersUltrasonic Water Meters

The MAX20037/MAX20038 ICs combine a 3.5A (or 1.5Afor MAX20038A) automotive-grade step-down converter, USB host chargeradapter emulator, and USB protection switches for automotiveUSB host applications. The device family alsoincludes a USB load current-sense amplifier and configurablefeedback-adjustment circuit, designed to provideautomatic USB voltage compensation for voltage dropsin captive cables often found in automotive applications.The ICs limit the USB load current using both a fixedinternal peak-current threshold of the DC-DC converterand a user-configurable external USB load current-senseamplifier threshold. The ICs can be configured to be a 2.4AApple® R30+ compliant solution.The ICs allow flexible configuration options for bothstand-alone and supervised applications, and can be programmedfor desired operation using both external programmingresistors and/or internal I2C registers throughthe I2C bus.The ICs are optimized for high-frequency operation andinclude programmable frequency selection from 310kHzto 2.2MHz, allowing optimization of efficiency, noise, andboard space based on application requirements. Thefully synchronous DC-DC converters feature integratedhigh-side and low-side MOSFETs, an external SYNCinput/output, and can be configured for spread-spectrumoperation.The MAX20037/MAX20038 are available in a small (5mmx 5mm) 28-pin TQFN package (side-wettable available)designed to minimize required components and layout area.Design Solution: Add Even More USB Ports to Your Car—In Less Space ›

The MAX20037/MAX20038 ICs combine a 3.5A (or 1.5Afor MAX20038A) automotive-grade step-down converter, USB host chargeradapter emulator, and USB protection switches for automotiveUSB host applications. The device family alsoincludes a USB load current-sense amplifier and configurablefeedback-adjustment circuit, designed to provideautomatic USB voltage compensation for voltage dropsin captive cables often found in automotive applications.The ICs limit the USB load current using both a fixedinternal peak-current threshold of the DC-DC converterand a user-configurable external USB load current-senseamplifier threshold. The ICs can be configured to be a 2.4AApple® R30+ compliant solution.The ICs allow flexible configuration options for bothstand-alone and supervised applications, and can be programmedfor desired operation using both external programmingresistors and/or internal I2C registers throughthe I2C bus.The ICs are optimized for high-frequency operation andinclude programmable frequency selection from 310kHzto 2.2MHz, allowing optimization of efficiency, noise, andboard space based on application requirements. Thefully synchronous DC-DC converters feature integratedhigh-side and low-side MOSFETs, an external SYNCinput/output, and can be configured for spread-spectrumoperation.The MAX20037/MAX20038 are available in a small (5mmx 5mm) 28-pin TQFN package (side-wettable available)designed to minimize required components and layout area.Design Solution: Add Even More USB Ports to Your Car—In Less Space ›

The MAX20037/MAX20038 ICs combine a 3.5A (or 1.5Afor MAX20038A) automotive-grade step-down converter, USB host chargeradapter emulator, and USB protection switches for automotiveUSB host applications. The device family alsoincludes a USB load current-sense amplifier and configurablefeedback-adjustment circuit, designed to provideautomatic USB voltage compensation for voltage dropsin captive cables often found in automotive applications.The ICs limit the USB load current using both a fixedinternal peak-current threshold of the DC-DC converterand a user-configurable external USB load current-senseamplifier threshold. The ICs can be configured to be a 2.4AApple® R30+ compliant solution.The ICs allow flexible configuration options for bothstand-alone and supervised applications, and can be programmedfor desired operation using both external programmingresistors and/or internal I2C registers throughthe I2C bus.The ICs are optimized for high-frequency operation andinclude programmable frequency selection from 310kHzto 2.2MHz, allowing optimization of efficiency, noise, andboard space based on application requirements. Thefully synchronous DC-DC converters feature integratedhigh-side and low-side MOSFETs, an external SYNCinput/output, and can be configured for spread-spectrumoperation.The MAX20037/MAX20038 are available in a small (5mmx 5mm) 28-pin TQFN package (side-wettable available)designed to minimize required components and layout area.Design Solution: Add Even More USB Ports to Your Car—In Less Space ›