MAX17701
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MAX17701

4.5V to 60V, Synchronous Step-Down Supercapacitor Charger Controller

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Wide Input Voltage, High Efficiency, Switching Super Cap Battery Charger

Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 2
1ku List Price Starting From $2.81
Features
  • Optimized Feature Set for Supercapacitor Charging
    • ±4% Charging Current Regulation Accuracy
    • ±6% Charging Current Monitor Accuracy (ISMON)
    • ±1% Voltage Regulation Accuracy
    • Programmable CC Mode Charging Current (ILIM)
    • Wide 4.5V to 60V Input-Voltage Range
    • Adjustable Output-Voltage Range from 1.25V Up To (VDCIN - 2.1V)
    • 125kHz to 2.2MHz Adjustable Frequency with External Clock Synchronization (RT/SYNC)
  • Reliable Operation in Adverse Environmental Conditions
    • Input Short-Circuit Protection (GATEN)
    • Safety Timer Feature (TMR)
    • Output Overvoltage Protection (OVI)
    • Cycle-by-Cycle Overcurrent Limit
    • Programmable EN/UVLO Threshold
    • Status Output Monitoring Using Open-Drain Outputs (FLG1 and FLG2)
    • Complies with CISPR 32 (EN55032) Class B Conducted and Radiated Emissions
    • Overtemperature Protection
    • Wide -40°C to +125°C Ambient Operating Temperature Range/ -40°C to +150°C Junction Temperature Range
Additional Details
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The Himalaya series of voltage regulator ICs, power modules, and chargers enable cooler, smaller, and simpler power supply solutions. The MAX17701 is a high efficiency, high voltage, Himalaya synchronous, step-down, supercapacitor charger controller designed to operate over an input-voltage range of a 4.5V to 60V. The MAX17701 operates over a -40°C to +125°C industrial temperature range and charges a supercapacitor with a ±4% accurate constant current. After the supercapacitor is charged, the device regulates the no-load output voltage with ±1% accuracy. The output voltage is programmable from 1.25V up to (VDCIN - 2.1V).

The MAX17701 supercapacitor charger controller is designed to provide a holistic application solution requiring backup energy storage with a precise charging capability. The device uses an external nMOSFET to provide input supply-side short-circuit protection; thus, preventing supercapacitor discharge.

The MAX17701 provides a safety timer (TMR) feature to set the maximum allowed constant current (CC) mode charging time. The device features an uncommitted comparator, which can be used to detect an output overvoltage event (OVI) and prevent the supercapacitor from overcharging. The MAX17701 is available in a 24-pin 4mm x 4mm TQFN package with an exposed pad.

Applications

  • Peak Power Delivery and Energy Storage
  • Backup Power for Industrial Safety
  • Ride-Through Last-Gasp Supplies
  • Portable Medical Equipment
  • Building and Home Automation Backup Power
Part Models 2
1ku List Price Starting From $2.81

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Documentation

Documentation

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Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
MAX17701ATG+
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MAX17701ATG+T
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Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

MAX17701EVKITA

Evaluation Kit for the MAX17701 in 5V Output-Voltage Application

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MAX17701EVKITA

Evaluation Kit for the MAX17701 in 5V Output-Voltage Application

Evaluation Kit for the MAX17701 in 5V Output-Voltage Application

Features and Benefits

  • Operates from a 7.1V to 60V Input Supply
  • 20A CC Mode Charging Current
  • 5V CV Mode Output Voltage
  • 350kHz Switching Frequency
  • Resistor-Programmable UVLO Threshold
  • Input Short Protection
  • CC Mode Safety Timer (TMR)
  • Cycle-by-Cycle Overcurrent Limit
  • External Clock Synchronization (RT/SYNC)
  • Charger Status Flags (FLG1, FLG2)
  • Charging Current Monitoring (ISMON)
  • Output Overvoltage Protection (OVI)
  • IC Overtemperature Protection
  • Proven PCB Layout
  • Fully Assembled and Tested

Product Detail

The MAX17701EVKITA# (EV kit) provides a proven design to evaluate the MAX17701 high-efficiency, high- voltage, Himalaya synchronous step-down DC-DC super- capacitor charger controller. The EV kit provides constant current (CC) mode and constant voltage (CV) modes to charge supercapacitors. The EV kit is designed to deliver 20A CC mode current (ICHGMAX) and 5V CV mode volt- age (VOUT) from a 7.1V to 60V input supply. The EV kit supports up to continuous 10A load connected in parallel to supercapacitors at the output. The EV kit is optimized for 24V nominal input voltage application. The switching frequency of the EV kit is set at 350kHz (fSW) for optimum efficiency and component size. The EV kit features a safety timer (TMR) to set the maximum allowed constant cur- rent (CC) mode charging time. For more details about the IC benefits and features, refer MAX17701 IC data sheet.

Applications

  • Backup Power for Industrial Safety
  • Building and Home Automation Backup Power
  • Peak Power Delivery and Energy Storage
  • Portable Medical Equipment
  • Ride-Through Last-Gasp Supplies

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