The MAX20037/MAX20038 ICs combine a 3.5A 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 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 ›ApplicationsAutomotive Connectivity/TelematicsAutomotive Radio and NavigationDedicated USB Charging Port (DCP)USB Port for Host and Hub Applications

The MAX20037/MAX20038 ICs combine a 3.5A 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 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 ›ApplicationsAutomotive Connectivity/TelematicsAutomotive Radio and NavigationDedicated USB Charging Port (DCP)USB Port for Host and Hub Applications

The MAX20046 device provides high-ESD and short-circuit protection for the low-voltage internal USB data and USB power line in automotive radio, navigation, connectivity, and USB hub applications. The device supports USB Hi-Speed (480Mbps), USB full-speed (12Mbps), and USB low-speed (1.5Mbps) operation. The short-circuit protection features include short-to-battery on the protected HVBUS, as well as short-to-HVBUS and short-to-battery on the protected HVD+ and HVD-. Short-to-GND and overcurrent protection are also provided on the protected HVBUS output to protect the internal BUS power rail from overcurrent faults. The device features high-ESD protection to ±15kV Air Gap and ±8kV Contact on the protected HVBUS, HVD+, and HVD- outputs. The device features a 500mΩ (max) USB power switch, and two low on-resistance (RON), USB 2.0 data switches. This device also features an enable input, fault output, 10ms fault-recovery time, 1ms overcurrent-blanking time, and integrated overcurrent autoretry. The MAX20046 is available in a 12-pin lead-free, TQFN-EP package and operate over the -40°C to +105°C temperature range.ApplicationsAutomotive USB Protection

The MAX20046 device provides high-ESD and short-circuit protection for the low-voltage internal USB data and USB power line in automotive radio, navigation, connectivity, and USB hub applications. The device supports USB Hi-Speed (480Mbps), USB full-speed (12Mbps), and USB low-speed (1.5Mbps) operation. The short-circuit protection features include short-to-battery on the protected HVBUS, as well as short-to-HVBUS and short-to-battery on the protected HVD+ and HVD-. Short-to-GND and overcurrent protection are also provided on the protected HVBUS output to protect the internal BUS power rail from overcurrent faults. The device features high-ESD protection to ±15kV Air Gap and ±8kV Contact on the protected HVBUS, HVD+, and HVD- outputs. The device features a 500mΩ (max) USB power switch, and two low on-resistance (RON), USB 2.0 data switches. This device also features an enable input, fault output, 10ms fault-recovery time, 1ms overcurrent-blanking time, and integrated overcurrent autoretry. The MAX20046 is available in a 12-pin lead-free, TQFN-EP package and operate over the -40°C to +105°C temperature range.ApplicationsAutomotive USB Protection

The MAX20046 device provides high-ESD and short-circuit protection for the low-voltage internal USB data and USB power line in automotive radio, navigation, connectivity, and USB hub applications. The device supports USB Hi-Speed (480Mbps), USB full-speed (12Mbps), and USB low-speed (1.5Mbps) operation. The short-circuit protection features include short-to-battery on the protected HVBUS, as well as short-to-HVBUS and short-to-battery on the protected HVD+ and HVD-. Short-to-GND and overcurrent protection are also provided on the protected HVBUS output to protect the internal BUS power rail from overcurrent faults. The device features high-ESD protection to ±15kV Air Gap and ±8kV Contact on the protected HVBUS, HVD+, and HVD- outputs. The device features a 500mΩ (max) USB power switch, and two low on-resistance (RON), USB 2.0 data switches. This device also features an enable input, fault output, 10ms fault-recovery time, 1ms overcurrent-blanking time, and integrated overcurrent autoretry. The MAX20046 is available in a 12-pin lead-free, TQFN-EP package and operate over the -40°C to +105°C temperature range.ApplicationsAutomotive USB Protection

The MAX20067/MAX20067B are complete TFT bias solution for automotive applications. It includes a current-mode boost converter and two push-pull charge-pump drivers.The IC also includes a gate-shading push-pull level shifter that can be used to improve display uniformity (when needed), and a DAC and VCOM buffer. All blocks on the IC can be used in stand-alone mode or through the I2C interface. Comprehensive control functions are included using the built-in I2C interface, as well as diagnostics and monitoring. The IC is intended to operate with 2.7V to 5.5V supplies. The MAX20067/MAX20067B are available in a 32-pin TQFN package and operates in the -40°C to +105°C temperature range.ApplicationsCentral Information DisplaysInfotainment DisplaysInstrument Clusters

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

The MAX77501 is a high-efficiency controller driver for piezo haptic actuators and is optimized for driving up to 2µF piezo elements. It can generate a single-ended haptic waveform of up to 110VPK-PK amplitude from a 2.8V to 5.5V input power supply or a single cell Li+ battery. Memory playback and haptic waveforms real-time streaming modes are supported.A 25MHz SPI interface provides full system access and control, including fault reporting and monitoring. This allows for a rapid 600µs playback start-up time from shutdown. The on-board memory can be dynamically allocated as multiple waveforms storage or as a FIFO buffer. The IC also implements an ultra-low power boost architecture providing the lowest power consumption solution for a haptic actuator driver.Built-in undervoltage lockout (UVLO), cycle-by-cycle overcurrent limit, overvoltage and thermal shutdown protections ensure safe operation under abnormal operating conditions.The MAX77501 is available in a 30-bump, 0.4mm pitch, wafer-level package (WLP). Design Solution: Piezo Haptic Driver Extends Portables’ Battery Life ›ApplicationsSmartphones, Tablets/E-readers, Game ConsolesKeyboard, Mice, Remote Controls, and PeripheralsHaptic/Tactile Feedback Enabled Equipment

The MAX77757 is a standalone 3.15A charger with integrated USB Type-C®CC detection with JEITA compliance that supports reverse boost capability. The fast-charge current is easily configured with resistors. The MAX77757 operates with an input voltage of 4.5V to 13.7V and has a maximum input current limit of 3A. The IC also implements the adaptive input current limit (AICL) function that regulates the input voltage by reducing input current to prevent the voltage of a weak adapter from collapsing or folding back.The USB Type-C Configuration Channel (CC) detection pins on the MAX77757 enable automatic USB Type-C power source detection and input current limit configuration. To support a variety of legacy USB types as well as proprietary adapters, the IC also integrates BC1.2 detection using the D+ and D- pins. The IC runs the CC pin and BC1.2 detection automatically as soon as a USB plug is inserted without any software control.The IC also offers reverse-boost capability up to 5.1V and 1.5A, which can be enabled with the ENBST pin. The STAT pin indicates charging status while the INOKB pin indicates valid input voltage. Charging can be stopped by pulling the THM pin low.The MAX77757 is equipped with a Smart Power Selector™ and a battery true-disconnect FET to control the charging and discharging of the battery or to isolate the battery in case of a fault. The MAX77757 is offered in several variants to support Li-ion batteries with various termination voltages from 4.1V to 4.5V. It also has a 3.6V termination voltage option for LiFePO4 batteries. The IC comes in a 3mm x 3mm, 0.4mm pitch, 24-lead FC2QFN package making it suitable for low-cost PCB assembly.ApplicationsMobile Point-of-Sale (mPOS) TerminalsPortable Medical DevicesWireless HeadphonesGPS TrackersCharging Cradles for Wearable DevicesPower BanksMobile Routers