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5V/3.3V/3V/Adjustable-Output, 1A, Step-Down, PWM, Switch-Mode DC-DC Regulators

Product Details

Key Features

Simplified Block Diagram

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Key Features

  • Input Range: Up to 30V
  • 1A On-Chip Power Switch
  • Adjustable Output (MAX830)
    • Fixed Outputs: 5V (MAX831)
    • 3.3V (MAX832)
    • 3V (MAX833)
  • 100kHz Switching Frequency
  • Excellent Dynamic Characteristics
  • Few External Components
  • 8mA Quiescent Current
  • 16-Pin SO Package
  • Evaluation Kit Available

Applications/Uses

  • Distributed Power from High-Voltage Buses
  • High-Current, High-Voltage Step-Down Applications
  • Multiple-Output Buck Converter

Description

The MAX830/MAX831/MAX832/MAX833 are monolithic, bipolar, pulse-width-modulation (PWM), switch-mode, step-down DC-DC regulators. Each is rated at 1A. Very few external components are needed for standard operation because the power switch, oscillator, feedback, and control circuitry are all on-chip. Employing a classic buck topology, these regulators perform high-current step-down functions.

These 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. They have a wide 8V to 30V input range. Outputs for the MAX831/MAX832/MAX833 are fixed at 5V/3.3V/3V, respectively. The MAX830 output is adjustable.

Available in 16-pin SO packages, the MAX830–MAX833 have a preset 100kHz oscillator frequency. In addition, the preset current limit and micropower shutdown can be externally controlled. See the MAX724/MAX726 data sheet for more applications information.

Simplified Block Diagram

MAX830, MAX831, MAX832, MAX833: Pin Configuration MAX830, MAX831, MAX832, MAX833: Pin Configuration 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.