The MAX77840 is a 3.15A switched-mode charger and ModelGauge™ fuel gauge with integrated USB BC1.2 detection for Li-ion batteries and a SAFEOUT LDO.The charger integrates all switches and operates at either 4MHz or 2MHz (programmable) switching frequency, allowing selection of the smallest external components or achieving lowest heat dissipation. The MAX77840 is ideally suited for devices such as mobile point-of-sale devices, portable medical electronics, or other handheld devices. It includes the USB BC1.2 detection function to recognize common USB adapters and set the input current limit automatically. The MAX77840 can supply up to 1.5A OTG current with proprietary MAXOTG protection, that limits the OTG output current to prevent system voltage from collapsing under heavy OTG loads.The ModelGauge m5 provides accurate battery fuel gauging and operates with extremely low battery current (25µA, typ) during standby or sleep mode to extend battery life. The interaction between the ModelGauge m5 and the charger provides end users a superior charging experience in a single IC.Shipping mode is built into the MAX77840 to minimize battery drain when the device is not in use. The MAX77840 features an I2C 3.0 compatible serial interface. It is offered in a 3.87mm x 3.96mm, 9 x 9 bump array wafer-level package (WLP) with 0.4mm pitch.ApplicationsIndustrial PCsPortable Medical DevicesMobile Point-of-Sale DevicesWireless SpeakersE-CigarettesSmart Home Automation, SensorsInternet of Things (IoT)

The MAX86150 is an integrated electrocardiogram, pulse oximeter, heart rate monitor sensor module. It includes internal LEDs, photodetector, and low-noise electronics with ambient light rejection. The MAX86150 helps ease design-in to mobile and wearable devices. The MAX86150 operates on a 1.8V supply voltage with a separate power supply for the internal LEDs. Communication to and from the module is entirely through a standard I2C-compatible interface. The module can be shut down through software with near zero standby current, allowing the power rails to remain powered at all times.ApplicationsFitness Assistant DevicesSmartphonesTabletsWearable Devices

The MAX86150 is an integrated electrocardiogram, pulse oximeter, heart rate monitor sensor module. It includes internal LEDs, photodetector, and low-noise electronics with ambient light rejection. The MAX86150 helps ease design-in to mobile and wearable devices. The MAX86150 operates on a 1.8V supply voltage with a separate power supply for the internal LEDs. Communication to and from the module is entirely through a standard I2C-compatible interface. The module can be shut down through software with near zero standby current, allowing the power rails to remain powered at all times.ApplicationsFitness Assistant DevicesSmartphonesTabletsWearable Devices

The MAX86171 is an ultra-low-power optical data acquisition system with both transmit and receive channels.On the transmitter side, the MAX86171 has nine LED driver output pins, programmable from three high-current, 8-bit LED drivers. On the receiver side, MAX86171 has two low-noise charge integrating front-ends that each include independent 19.5 bit ADCs and best-in-class ambient light cancellation (ALC) circuits, producing the highest performing integrated optical data acquisition system on the market today.Due to its low power consumption, compact size, ease and flexibility of use, the MAX86171 is ideal for a wide variety of optical sensing applications such as pulseoximetry and heart rate detection.The MAX86171 operates on a 1.8V main supply voltage and a 3.1V to 5.5V LED driver supply voltage. The device supports both I2C and SPI compatible interfaces in a fully autonomous way. The device has a large 256-word built-in FIFO. The MAX86171 is available in a compact 28-bump WLP package.ApplicationsWearable Devices for Fitness, Wellness, and Medical ApplicationsClinical AccuracySuitable for Wrist, Finger, Ear, and Other LocationsOptimized Performance to Detect:Optical Heart RateHeart Rate VariabilityOxygen Saturation (SpO2)Body HydrationMuscle and Tissue Oxygen Saturation (SmO2 and StO2)Maximum Oxygen Consumption (VO2 max)

The MAX86171 is an ultra-low-power optical data acquisition system with both transmit and receive channels.On the transmitter side, the MAX86171 has nine LED driver output pins, programmable from three high-current, 8-bit LED drivers. On the receiver side, MAX86171 has two low-noise charge integrating front-ends that each include independent 19.5 bit ADCs and best-in-class ambient light cancellation (ALC) circuits, producing the highest performing integrated optical data acquisition system on the market today.Due to its low power consumption, compact size, ease and flexibility of use, the MAX86171 is ideal for a wide variety of optical sensing applications such as pulseoximetry and heart rate detection.The MAX86171 operates on a 1.8V main supply voltage and a 3.1V to 5.5V LED driver supply voltage. The device supports both I2C and SPI compatible interfaces in a fully autonomous way. The device has a large 256-word built-in FIFO. The MAX86171 is available in a compact 28-bump WLP package.ApplicationsWearable Devices for Fitness, Wellness, and Medical ApplicationsClinical AccuracySuitable for Wrist, Finger, Ear, and Other LocationsOptimized Performance to Detect:Optical Heart RateHeart Rate VariabilityOxygen Saturation (SpO2)Body HydrationMuscle and Tissue Oxygen Saturation (SmO2 and StO2)Maximum Oxygen Consumption (VO2 max)

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 MAX40200 is an ideal diode current-switch that drops so little voltage that it approaches an order of magnitude better than Schottky diodes.When forward-biased and enabled, the MAX40200 conducts with as little as 85mV of voltage drop while carrying currents as high as 1A. Typical voltage drop is 43mV at 500mA, with the voltage drop increasing linearly at higher currents. The MAX40200 thermally protects itself, and any downstream circuitry, from overtemperature conditions.When disabled (EN = low) the MAX40200 blocks voltages up to 6V in either direction, making it suitable for most low-voltage, portable electronic devices. The MAX40200 operates from a supply voltage of 1.5V to 5.5V.The MAX40200 is available in a tiny, 0.73mm X 0.73mm, 4-bump wafer-level package (WLP), with a 0.35mm bump pitch and only 0.5mm high and 5-pin SOT-23 package. The MAX40200 operates over the extended -40°C to +125°C temperature range.Design Solution: Cut Your Losses—With an Ideal Diode ›Design Solution: Design a Cooler, Safer Smart-Home Hub—Using an Ideal Diode ›How to Add a Diode ORing or Battery Backup Circuit Using the MAX40200 Ideal DiodeApplicationsCellular PhonesElectronic ToysNotebook and Tablet ComputersPortable Media PlayersPortable/Wearable Medical DevicesUSB-Powered Peripherals