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5A/2A, Step-Down, PWM, Switch-Mode DC-DC Regulators

Product Details

Key Features

Simplified Block Diagram

Technical Docs

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Key Features

  • Input Range: Up to 40V
  • 5A On-Chip Power Switch (MXL1074)
  • 2A On-Chip Power Switch (MXL1076)
  • Adjustable Output: 2.5V to 35V
  • 100kHz Switching Frequency
  • Excellent Dynamic Characteristics
  • Few External Components
  • 8.5mA Quiescent Current
  • TO-220 Package

Applications/Uses

  • Distributed Power from High-Voltage Buses
  • High-Current Inverter
  • High-Current, High-Voltage Step-Down Applications
  • Isolated DC-DC Conversion
  • Multiple-Output Step-Down Converter
  • Negative Step-Up Converter

Description

The MXL1074/MXL1076 are monolithic, bipolar, pulse-width modulation (PWM), switch-mode DC-DC regulators optimized for step-down applications. The MXL1074 is rated at 5A, while the MXL1076 is rated at 2A. Few external components are needed for standard operation because the power switch, oscillator, and control circuitry are all on-chip. Employing a classic buck topology, these regulators perform high-current step-down functions, but can also be configured as an inverter, a negative boost converter, or a flyback converter.

The regulators have excellent dynamic and transient-response characteristics, while featuring cycle-by-cycle current limiting to protect against overcurrent faults and short-circuit output faults. The MXL1074/MXL1076 also have a wide 8V to 40V input range in the step-down configuration. In inverting and step-up configurations, the input can be as low as 5V.

The MXL1074/MXL1076 are available in a 5-pin TO-220 package. The devices have a preset 100kHz oscillator frequency and a preset current limit of 6.5A for the MXL1074, and 2.6A for the MXL1076. The MXL1074/MXL1076 are pin compatible with the LT1074/LT1076.

Simplified Block Diagram

MXL1074, MXL1076: Typical Operating Circuit MXL1074, MXL1076: Typical Operating Circuit Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .

Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.