MAX1744
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MAX1744

High-Voltage, Step-Down DC-DC Controller in µMAX

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High-Voltage (36V) Step-Down DC-DC Controller in µMAX

Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 6
1ku List Price Starting From $3.37
Features
  • High-Voltage Operation (up to 36VIN)
  • Efficiency > 90%
  • Output Power Capability Exceeds 50W
  • 10-Pin µMax Package
  • Low-Dropout Voltage
  • 100% (max) Duty Cycle
  • 90µA Quiescent Current
  • 4µA Shutdown Current
  • Up to 330kHz Switching Frequency
  • Output Voltage
    • 5V or 3.3V (MAX1744)
    • Adjustable 1.25V to 18V (MAX1745)
  • Current-Limited Control Scheme
Additional Details
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The MAX1744/MAX1745 are step-down DC-DC controllers capable of handling up to 36V inputs. These parts use a proprietary current-limited control scheme for excellent light- and full-load efficiency, while their 330kHz (max) switching frequency permits small external components for space-critical applications. Operation to 100% duty cycle permits the lowest possible dropout voltage.

The MAX1744 contains an internal feedback network that provides a pin-selectable output voltage of either 3.3V or 5V. The MAX1745 uses an external feedback network to generate an adjustable output voltage between 1.25V and 18V.

The MAX1744/MAX1745 are available in a space-saving 10-pin µMAX® package.

Applications

  • Automotive Electronics
  • FireWire®/IEEE® 1394
  • Industrial Control Systems
  • Telecom Systems
  • Wall-Cube-Powered Devices
Part Models 6
1ku List Price Starting From $3.37

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
MAX1744AUB+
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MAX1744AUB+T
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MAX1744EUB+
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MAX1744EUB+T
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MAX1744EUB/V+
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MAX1744EUB/V+T
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Product Lifecycle

PCN

Sep 19, 2018

- 1753N

ASSEMBLY

MAX1744AUB+

PRODUCTION

MAX1744AUB+T

PRODUCTION

MAX1744EUB+

PRODUCTION

MAX1744EUB+T

PRODUCTION

Filter by Model

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Reset Filters

Part Models

Product Lifecycle

PCN

Sep 19, 2018

- 1753N

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ASSEMBLY

MAX1744AUB+

PRODUCTION

MAX1744AUB+T

PRODUCTION

MAX1744EUB+

PRODUCTION

MAX1744EUB+T

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

MAX1745EVKIT

Evaluation Kit for the MAX1744, MAX1745

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MAX1745EVKIT

Evaluation Kit for the MAX1744, MAX1745

Evaluation Kit for the MAX1744, MAX1745

Features and Benefits

  • High Input Voltage (up to 36V)
  • Selectable 3.3V or 5V Output Voltage (MAX1744)
  • 1.25V to 18V Adjustable Output Voltage (MAX1745)
  • Low Dropout Voltage
  • 100% Maximum Duty Cycle
  • 2A Output Current
  • Up to 330kHz Switching Frequency
  • 4µA IC Shutdown Current
  • 10-Pin µMAX® Package
  • Fully Assembled and Tested

Product Detail

The MAX1744 evaluation kit (EV kit) provides a selectable 3.3V or 5V output voltage from input as high as 36V. The MAX1744 operates up to 100% duty cycle, extending the usable input voltage range. The 100% duty cycle and a low 100mV current-sense level permit very low dropout voltages. The circuit is configured to deliver up to 2A of output current with greater than 90% conversion efficiency. The output current can be increased by changing the external components.

This EV kit is a fully assembled and tested circuit board. It can also be used to evaluate the MAX1745, which has an adjustable output voltage, by selecting feedback resistors R2 and R3.

Applications

  • Automated Test Equipment (ATE)
  • Automatic Utility Meter Reading
  • Automotive Engine Control
  • Automotive Passenger Compartment
  • Automotive Sensors
  • Battery Chargers
  • Building Energy Management (HVAC)
  • Building Security/Remote Cameras
  • Cable Modems
  • Cell Phone Base Stations
  • Computers: Desktop, Workstation, Server
  • Global Positioning Systems (GPS)
  • High-Speed Access (Telecom)
  • Industrial Sensor Transmitters/Transducers
  • Local Multipoint Distribution Systems
  • Modems
  • Network Hubs, Switches, Routers
  • Notebook Computers
  • Telecom Switches
  • Wireless Local Loop (WLL)

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