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Switch-Mode Regulator with 5V to ±12 or ±15V Dual-Output

Product Details

Key Features

Simplified Block Diagram

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Key Features

  • Specs Guaranteed for In-Circuit Performance
  • Load Currents to ±2A
  • 4.2V to 10V Input-Voltage Range
  • Switches From ±15V to ±12V Under Logic Control
  • ±4% Output Tolerance Max Over Temp, Line, and Load
  • 90% Typ Efficiency
  • Low-Noise, Current-Mode Feedback
  • Cycle-by-Cycle Current Limiting
  • Undervoltage Lockout and Soft-Start
  • 100kHz or 200kHz Operation

Applications/Uses

  • Computer Peripherals
  • DC-DC Converter Module Replacement
  • Distributed Power Systems

Description

The MAX742 DC-DC converter is a controller for dual-output power supplies in the 3W to 60W range. Relying on simple two-terminal inductors rather than transformers, the MAX742 regulates both outputs independently to within ±4% over all conditions of line voltage, temperature, and load current.

The MAX742 has high efficiency (up to 92%) over a wide range of output loading. Two independent PWM current-mode feedback loops provide tight regulation and operation free from subharmonic noise. The MAX742 can operate at 100kHz or 200kHz, so it can be used with small and lightweight external components. Also ripple and noise are easy to filter. The MAX742 provides a regulated output for inputs ranging from 4.2V to 10V (and higher with additional components).

External power MOSFETs driven directly from the MAX742 are protected by cycle-by-cycle overcurrent sensing. The MAX742 also features undervoltage lockout, thermal shutdown, and programmable soft-start.

If 3W of load power or less is needed, refer to the MAX743 data sheet for a device with internal power MOSFETs.

Simplified Block Diagram

MAX742: Simplified Block Diagram MAX742: Simplified Block Diagram 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.