| Power Management (PMIC) | 6 | Active | |
MAX176454.5V to 36V, 1A, High-Efficiency, Synchronous Step-Down DC-DC Converter | Integrated Circuits (ICs) | 4 | Active | The MAX17645 is a high-efficiency, high voltage, synchronous step-down DC-DC converter with integrated MOSFETs, operates over a 4.5V to 36V input. It can deliver up to 1A load current. The MAX17645 operates at 650kHz switching frequency. The MAX17645B operates in pulse-width modulation (PWM) mode at all loads. The MAX17645D operates in pulse-frequency modulation (PFM) mode at light loads. The output voltage is programmable from 0.9V up to 89% of VIN. Built-in control loop compensation across the output voltage range eliminates the need for external compensation components. The feedback voltage regulation accuracy over -40°C to +125°C is ±1.1%.The device features a peak-current-mode control architecture. In this architecture, while operating in PWM mode the part sets the duty cycle using a transconductance error amplifier, a PWM comparator, a high-side current-sense amplifier, and a slope-compensation generator. At each rising edge of the clock, the high-side MOSFET turns on and remains on until either the appropriate or maximum duty cycle is reached, or the peak current limit is detected. During the high-side MOSFET’s on-time, the inductor current ramps up. During the rest of the switching cycle, the high-side MOSFET remains off and the low-side MOSFET remains on, inductor current ramps down. An appropriate dead time is implemented between the high-side and low-side state transitions to avoid cross conduction.A fixed soft-start time of 3.15ms (typ) allows users to reduce input inrush current. The device also features an enable/undervoltage lockout pin (EN/UVLO) that allows the user to turn on the part at the desired input-voltage level. An open-drain active-low RESET feature provides a power-good signal to the system upon achieving successful regulation of the output voltage.ApplicationsFactory AutomationAftermarket Market AutomationGeneral Point of Load |
| DC/DC & AC/DC (Off-Line) SMPS Evaluation Boards | 7 | Active | |
| Development Boards, Kits, Programmers | 6 | Active | |
| DC/DC & AC/DC (Off-Line) SMPS Evaluation Boards | 4 | Active | |
MAX17670Integrated 4V-60V, 150mA, High-Efficiency, Synchronous Step-Down DC-DC Converter with 50mA Linear Regulator | Voltage Regulators - DC DC Switching Regulators | 3 | Active | The Himalaya series of voltage regulator ICs, power modules, and chargers enable cooler, smaller, and simpler power-supply solutions. MAX17670, MAX17671, and MAX17672 are dual-output regulators integrating a 4V to 60V, 150mA high-voltage, high-efficiency, Himalaya synchronous step-down converter with internal MOSFETs and a high-PSRR, low-noise, 2.35V to 5.5V, 50mA linear regulator. The MAX17670 and MAX17671 provide fixed step-down converter output voltages of 3.3V and 5V, respectively. The output voltage of the MAX17672 step-down converter is adjustable (0.8V up to 90% of VIN). 3.3V (MAX17671 and MAX17672 only), 3.0V, 2.5V, 1.8V, 1.5V, and 1.2V linear regulator output voltage options are supported.The feedback-voltage regulation accuracy over -40°C to +125°C temperature range for the linear regulator is ±1.3% and for the step-down converter is ±2%. The devices are available in a compact 10-pin (3mm x 3mm) TDFN package. Simulation models are available.ApplicationsBattery-Powered EquipmentHigh-Voltage Linear Regulator ReplacementHVAC and Building ControlIndustrial Sensors and Process Control |
MAX17671Integrated 4V-60V, 150mA, High-Efficiency, Synchronous Step-Down DC-DC Converter with 50mA Linear Regulator | DC/DC & AC/DC (Off-Line) SMPS Evaluation Boards | 3 | Active | The Himalaya series of voltage regulator ICs, power modules, and chargers enable cooler, smaller, and simpler power-supply solutions. MAX17670, MAX17671, and MAX17672 are dual-output regulators integrating a 4V to 60V, 150mA high-voltage, high-efficiency, Himalaya synchronous step-down converter with internal MOSFETs and a high-PSRR, low-noise, 2.35V to 5.5V, 50mA linear regulator. The MAX17670 and MAX17671 provide fixed step-down converter output voltages of 3.3V and 5V, respectively. The output voltage of the MAX17672 step-down converter is adjustable (0.8V up to 90% of VIN). 3.3V (MAX17671 and MAX17672 only), 3.0V, 2.5V, 1.8V, 1.5V, and 1.2V linear regulator output voltage options are supported.The feedback-voltage regulation accuracy over -40°C to +125°C temperature range for the linear regulator is ±1.3% and for the step-down converter is ±2%. The devices are available in a compact 10-pin (3mm x 3mm) TDFN package. Simulation models are available.ApplicationsBattery-Powered EquipmentHigh-Voltage Linear Regulator ReplacementHVAC and Building ControlIndustrial Sensors and Process Control |
| Voltage Regulators - DC DC Switching Regulators | 5 | Active | |
MAX17673Integrated 4.5V to 60V Synchronous 1.5A HV Buck and Dual 2.7V to 5.5V, 1A Buck Regulators | Evaluation Boards | 6 | Active | MAX17673/MAX17673A power management integrated circuits (PMIC) integrate a 60V high voltage (HV), high efficiency synchronous DC-DC buck regulator and two 5.5V high efficiency synchronous DC-DC buck regulators. All three regulators offer integrated power MOSFETs.The HV regulator operates from a 4.5V to 60V input voltage range and the LV regulators operate from a 2.7V to 5.5V input voltage range. The HV regulator supports load currents up to 1.5A, and can regulate output voltages from 0.9V to 5.5V. The LV regulators support load currents up to 1A, and can regulate output voltages from 0.75V to 4.8V.MAX17673/MAX17673A offer independent peak current mode control, hiccup mode overcurrent protection, ENABLE input and Power OK signal in the three regulators. The switching frequency is adjustable between 1MHz and 4MHz in the LV regulators, and the HV regulator can be programmed to run at a fractional switching frequency of the LV regulators. The HV regulator offers an adjustable soft-start function, while the LV regulators present internally fixed soft-start. Users can choose to operate the devices in either pulse frequency modulation (PFM) or forced pulse width modulation (PWM) scheme.The devices are available in a 28-pin, 5mm x 5mm TQFN package and operates over a -40°C to +125°C temperature range.ApplicationsBase Station Power SuppliesDistributed Supply RegulationFPGA/CPLD Power SuppliesHigh Voltage Single Board SystemsIndustrial Control Power Supplies |
MAX176814.5V to 42V Input, High-Efficiency, Iso-Buck DC-DC Converter | Integrated Circuits (ICs) | 16 | Active | The MAX17681/MAX17681A is a high-voltage, high-efficiency, iso-buck DC-DC converter designed to provide isolated power up to 5W. The device operates over a wide 4.5V to 42V input and uses primary-side feedback to regulate the output voltage.MAX17681/MAX17681A uses peak-current-mode control. The low-resistance, on-chip MOSFETs ensure high efficiency at full load while simplifying the PCB layout.The MAX17681/MAX17681A devices generate a well regulated primary side voltage which is then scaled by a suitable transformer turns ratio to derive isolated secondary output rails. While both MAX17681 and MAX17681A support primary side overcurrent protection, the MAX17681A is an enhanced design that supports robust secondary-side overcurrent protection as well.The MAX17681/MAX17681A is available in a compact 10-pin (3mm x 2mm) TDFN package. Simulation models are available.ApplicationsFloating Power Supply GenerationIsolated Fieldbus InterfacesIsolated Power Supplies in Medical EquipmentPLC I/O ModulesSmart Meters |
