MAX1752160V, 1A, Dual-Output, High-Efficiency, Synchronous Step-Down DC-DC Converter | Voltage Regulators - DC DC Switching Regulators | 2 | Active | The MAX17521 dual-output, high-efficiency, high-voltage, synchronous step-down DC-DC converter with integrated MOSFETs operates over a 4.5V to 60V input. The converter can deliver up to 1A at each output. Each output is programmable from 0.9V to 92%VIN. The feedback voltage regulation accuracy over -40°C to +125°C is ±1.7%.The MAX17521 uses peak-current-mode control. Each output can be operated in the pulse-width modulation (PWM) or pulse-frequency modulation (PFM) control schemes.The MAX17521 is available in a 24-pin (4mm x 5mm) TQFN package. Simulation models are available.ApplicationsCPU, DSP, or FPGA PowerDistributed Supply RegulationGeneral-Purpose Point of LoadIndustrial Control Power Supplies |
MAX175234.2V to 36V, 1A Current Limiter with OV, UV, Reverse Voltage Protection | Evaluation Boards | 4 | Active | The Olympus series of ICs are the industry’s smallest and robust integrated system protection solutions. The MAX17523/MAX17523A adjustable overvoltage and overcurrent protection device is ideal for protecting systems against positive and negative input voltage faults up to ±40V, and feature low 190mΩ (typ) RONintegrated FETs.The adjustable overvoltage range in MAX17523 is between 6V and 36V, while the adjustable undervoltage range is between 4.5V and 24V. The adjustable overvoltage range in MAX17523A is between 6V and 36V, while the adjustable undervoltage range is between 4.2V 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 19V (typ).The MAX17523/MAX17523A also feature programmable current-limit protection up to 1A. The device can be set for autoretry, latch-off, or continuous fault response when an overcurrent event occurs. Once current reaches the threshold, the MAX17523/MAX17523A turn off after 21ms (typ) blanking time, and stay off during the retry period when set to autoretry mode. The devices latch off after the blanking time when set to latch-off mode. The devices limit the current continuously when set to continuous mode. The MAX17523/MAX17523A also feature reverse current and thermal shutdown protection.The MAX17523 and MAX17523A are available in a small, 16-pin (3mm x 3mm) TQFN package. The MAX17523 operates over the -40°C to +125°C extended temperature range.ApplicationsCondition MonitoringFactory SensorsProcess AnalyticsProcess InstrumentationSensor SystemsWeighing and Batching Systems |
MAX17523A4.2V to 36V, 1A Current Limiter with OV, UV, Reverse Voltage Protection | Power Management - Specialized | 2 | Active | The Olympus series of ICs are the industry’s smallest and robust integrated system protection solutions. The MAX17523/MAX17523A adjustable overvoltage and overcurrent protection device is ideal for protecting systems against positive and negative input voltage faults up to ±40V, and feature low 190mΩ (typ) RONintegrated FETs.The adjustable overvoltage range in MAX17523 is between 6V and 36V, while the adjustable undervoltage range is between 4.5V and 24V. The adjustable overvoltage range in MAX17523A is between 6V and 36V, while the adjustable undervoltage range is between 4.2V 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 19V (typ).The MAX17523/MAX17523A also feature programmable current-limit protection up to 1A. The device can be set for autoretry, latch-off, or continuous fault response when an overcurrent event occurs. Once current reaches the threshold, the MAX17523/MAX17523A turn off after 21ms (typ) blanking time, and stay off during the retry period when set to autoretry mode. The devices latch off after the blanking time when set to latch-off mode. The devices limit the current continuously when set to continuous mode. The MAX17523/MAX17523A also feature reverse current and thermal shutdown protection.The MAX17523 and MAX17523A are available in a small, 16-pin (3mm x 3mm) TQFN package. The MAX17523 operates over the -40°C to +125°C extended temperature range.ApplicationsCondition MonitoringFactory SensorsProcess AnalyticsProcess InstrumentationSensor SystemsWeighing and Batching Systems |
MAX175244.5V to 60V, Dual 3A, High-Efficiency, Synchronous Step-Down DC-DC Converter | Development Boards, Kits, Programmers | 4 | Active | The MAX17524 dual 3A, high-efficiency, high-voltage, synchronous step-down DC-DC converter with integrated high-side MOSFETs operates over an input-voltage range of 4.5V to 60V. The device can deliver up to 3A on each output and generates output voltages from 0.9V up to 90% of VIN. This device features internal compensation.The MAX17524 uses peak current-mode control, and can be operated in pulse-width modulation (PWM), pulse-frequency modulation (PFM), and discontinuous-conduction mode (DCM) to enable high efficiency under light-load conditions.The feedback-voltage regulation accuracy is accurate to within ±1.4% over -40°C to +125°C. The device is available in a 32-pin (5mm x 5mm) Thin QFN (TQFN) package. Simulation models are available.ApplicationsBase Station Power SuppliesDistributed Supply RegulationGeneral-Purpose Point-of-LoadHigh-Voltage Single-Board SystemsIndustrial Control Power SuppliesWall Transformer Regulation |
| Evaluation and Demonstration Boards and Kits | 3 | Active | |
MAX175265.5V to 60V, 6A Current-Limiter with OV, UV, Reverse Protection, and Power Limit | Evaluation and Demonstration Boards and Kits | 4 | Active | The Olympus series of ICs are the industry's smallest and robust integrated system protection solutions. The MAX17526A adjustable power limiter offers a unique feature to limit power drawn from supplies or delivered to loads, amongst a host of protection features. These protection features include adjustable input overvoltage and undervoltage protection, positive and negative input voltage protection, overcurrent protection, reverse-current protection and overtemperature protection. The device features a built-in low RON(30mΩ typ) NFET, and an integrated gate drive for an optional external NFET.The device highlights a power limit feature that allows programmed reduction in current limit, as an inverse function of an external voltage. Input or output power limit is achieved by limiting the current through the device as a function of input or output voltages.Input undervoltage protection level is adjustable between 5.5V and 24V, and input overvoltage protection level is adjustable between 6V and 40V. The input undervoltage lockout (UVLO) threshold and overvoltage lockout (OVLO) threshold are adjusted using external resistors. The device offers a factory preset internal UVLO and OVLO thresholds at 12.4V (typ) and 36.2V (typ) respectively. The factory preset levels can be invoked by connecting the UVLO and/or the OVLO pins to GND.The device features programmable current limit protection up to 6A. Current limit threshold is programmed by connecting a resistor from the SETI pin to GND. When the device current reaches the programmed threshold, the controller inside the device prevents further increase in current by modulating the internal NFET resistance. The device offers three different behavioral modes under current limited operation: Continuous mode, Autoretry mode, and Latch-off mode. The continuous current limit feature offers control of inrush current at startup while charging high capacitances at the output side. Two additional part options that feature a dual-stage current-limit mode, in which the current is continuously limited to 1.5x (MAX17526B) and 2.0x (MAX17526C), the programmed limits, are available. The power limit feature is disabled in the MAX17526B/C part options. The voltage appearing on the SETI pin is proportional to the instantaneous current flowing through the device, and can be read by the supervisory system.MAX17526A also offers reverse-current protection and input reverse voltage polarity protection when deployed with an external NFET, and built-in overtemperature protection. It is available in a 20-pin 5mm x 5mm TQFN-EP package. The device operates over -40°C to +125°C extended temperature range.ApplicationsControl and AutomationHuman Machine InterfacesIndustrial Power Distribution SystemsMotion Control Drives |
MAX17526B5.5V to 60V, 6A Current-Limiter with OV, UV, Reverse Protection, and Power Limit | Power Management (PMIC) | 2 | Active | The Olympus series of ICs are the industry's smallest and robust integrated system protection solutions. The MAX17526A adjustable power limiter offers a unique feature to limit power drawn from supplies or delivered to loads, amongst a host of protection features. These protection features include adjustable input overvoltage and undervoltage protection, positive and negative input voltage protection, overcurrent protection, reverse-current protection and overtemperature protection. The device features a built-in low RON(30mΩ typ) NFET, and an integrated gate drive for an optional external NFET.The device highlights a power limit feature that allows programmed reduction in current limit, as an inverse function of an external voltage. Input or output power limit is achieved by limiting the current through the device as a function of input or output voltages.Input undervoltage protection level is adjustable between 5.5V and 24V, and input overvoltage protection level is adjustable between 6V and 40V. The input undervoltage lockout (UVLO) threshold and overvoltage lockout (OVLO) threshold are adjusted using external resistors. The device offers a factory preset internal UVLO and OVLO thresholds at 12.4V (typ) and 36.2V (typ) respectively. The factory preset levels can be invoked by connecting the UVLO and/or the OVLO pins to GND.The device features programmable current limit protection up to 6A. Current limit threshold is programmed by connecting a resistor from the SETI pin to GND. When the device current reaches the programmed threshold, the controller inside the device prevents further increase in current by modulating the internal NFET resistance. The device offers three different behavioral modes under current limited operation: Continuous mode, Autoretry mode, and Latch-off mode. The continuous current limit feature offers control of inrush current at startup while charging high capacitances at the output side. Two additional part options that feature a dual-stage current-limit mode, in which the current is continuously limited to 1.5x (MAX17526B) and 2.0x (MAX17526C), the programmed limits, are available. The power limit feature is disabled in the MAX17526B/C part options. The voltage appearing on the SETI pin is proportional to the instantaneous current flowing through the device, and can be read by the supervisory system.MAX17526A also offers reverse-current protection and input reverse voltage polarity protection when deployed with an external NFET, and built-in overtemperature protection. It is available in a 20-pin 5mm x 5mm TQFN-EP package. The device operates over -40°C to +125°C extended temperature range.ApplicationsControl and AutomationHuman Machine InterfacesIndustrial Power Distribution SystemsMotion Control Drives |
MAX17526C5.5V to 60V, 6A Current-Limiter with OV, UV, Reverse Protection, and Power Limit | Power Management (PMIC) | 2 | Active | The Olympus series of ICs are the industry's smallest and robust integrated system protection solutions. The MAX17526A adjustable power limiter offers a unique feature to limit power drawn from supplies or delivered to loads, amongst a host of protection features. These protection features include adjustable input overvoltage and undervoltage protection, positive and negative input voltage protection, overcurrent protection, reverse-current protection and overtemperature protection. The device features a built-in low RON(30mΩ typ) NFET, and an integrated gate drive for an optional external NFET.The device highlights a power limit feature that allows programmed reduction in current limit, as an inverse function of an external voltage. Input or output power limit is achieved by limiting the current through the device as a function of input or output voltages.Input undervoltage protection level is adjustable between 5.5V and 24V, and input overvoltage protection level is adjustable between 6V and 40V. The input undervoltage lockout (UVLO) threshold and overvoltage lockout (OVLO) threshold are adjusted using external resistors. The device offers a factory preset internal UVLO and OVLO thresholds at 12.4V (typ) and 36.2V (typ) respectively. The factory preset levels can be invoked by connecting the UVLO and/or the OVLO pins to GND.The device features programmable current limit protection up to 6A. Current limit threshold is programmed by connecting a resistor from the SETI pin to GND. When the device current reaches the programmed threshold, the controller inside the device prevents further increase in current by modulating the internal NFET resistance. The device offers three different behavioral modes under current limited operation: Continuous mode, Autoretry mode, and Latch-off mode. The continuous current limit feature offers control of inrush current at startup while charging high capacitances at the output side. Two additional part options that feature a dual-stage current-limit mode, in which the current is continuously limited to 1.5x (MAX17526B) and 2.0x (MAX17526C), the programmed limits, are available. The power limit feature is disabled in the MAX17526B/C part options. The voltage appearing on the SETI pin is proportional to the instantaneous current flowing through the device, and can be read by the supervisory system.MAX17526A also offers reverse-current protection and input reverse voltage polarity protection when deployed with an external NFET, and built-in overtemperature protection. It is available in a 20-pin 5mm x 5mm TQFN-EP package. The device operates over -40°C to +125°C extended temperature range.ApplicationsControl and AutomationHuman Machine InterfacesIndustrial Power Distribution SystemsMotion Control Drives |
| Evaluation and Demonstration Boards and Kits | 1 | Active | |
MAX17527A5.5V to 60V, 6A Power Limiter with OV, UV, Reverse Polarity, Loss of Ground Protection | Current Regulation/Management | 2 | Active | The MAX17527A offers adjustable protection boundaries for systems against input voltage faults and overcurrent faults. In addition, the MAX17527A offers a programmable power limiting function. Input-voltage faults (with positive polarity) are protected up to +60V by an internal nFET featuring low ON-resistance (30mΩ typ). The device features fixed or programmable overvoltage lockout (OVLO) and undervoltage lockout (UVLO) thresholds by using internal or external voltage-dividers. Factory preset internal fixed thresholds can be invoked by connecting the OVLO and/or UVLO pin(s) to GND. Input undervoltage protection can be programmed between 5.5V and 59V, while the overvoltage protection can be independently programmed between 6V and 60V.Input reverse-polarity protection is realized using an external nFET that is controlled by the MAX17527A. The magnitude of reverse-polarity voltage protection is dependent on the operating load-bus voltage (VOUT) and the voltage blocking capability of the external nFET. For example, for protection down to a -55V input range with VOUT= 30V, an external nFET rated at 85V is needed. The external nFET is also needed for the optional reverse-current protection. If reverse polarity protection and reverse-current protection are not needed, SN must be connected to IN and GN must be left unconnected. The MAX17527A is tolerant against accidental output reverse-polarity application due to incorrect wiring across the output terminals.The current limit of the device is programmed by connecting a resistor from the SETI pin to GND. The current limit can be programmed from 0.6A to 6.0A. When the current through the device reaches or exceedes the set current limit, the resistance of the internal nFET is modulated to limit the current. The device offers three current limit behavioral modes: Continuous, Auto-retry, and Latch-off modes.The SETI pin presents a current proportional to the device current under normal operation. Together with the current limit program resistor (between SETI and GND), the SETI pin presents a voltage that is proportional to the device current. This voltage can be read by a monitoring system for recording instantaneous current of the device.The power limit function is realized either at the input supply side or output load side by sampling the input or output voltage through a potential divider connecting to the PLIM pin. The power limit feature reduces the programmed current limit when the external voltage increases above the programmed threshold. The device can be turned On or Off through enable input EN by a master supervisory system. This allows the master supervisory system to Turn On or Off the power delivery to connected loads.The device offers loss-of-ground protection where it safely turns Off the device operation during a loss-of-ground fault event, i.e., when the safety ground fuse opens up in a redundant-safety application.The device offers a status announcement signalFLAG) to indicate operational and fault signals.FLAGis an open drain pin, and requires an external pullup resistor to the appropriate system interface voltage. The device also offers internal thermal shutdown protection against excessive power dissipation.APPLICATIONSLoss of Ground ProtectionUL1310 Class 2 Power Limiter |
