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MAX637

Part No MAX637
Manufacturer Maxim Integrated
Description Preset/Adjustable Output CMOS Inverting Switching Regulators
Sample
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ECAD Module
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Manufacturer Maxim Integrated
Win Source Part Number 1214529-MAX637
Manufacturer Homepage www.maxim-ic.com
Popularity Medium
Supply and Demand Status Limited
Application Field Used in System Monitoring, Communications & Networking, Industrial, Automotive
Ultra Librarian 3D Model Ultra Librarian MAX637 CAD Model

Description

The MAX637 from Maxim Integrated is a high-efficiency, CMOS step-up switching regulator designed for battery-powered and low-voltage systems. This versatile component is an ideal solution for applications requiring a regulated output voltage from a variable input source.

The MAX637 operates from an input voltage as low as 1.8V and can deliver a fixed output voltage of 5V or an adjustable output from 2.7V to 5.5V, making it suitable for devices powered by 2-cell alkaline/NiCd/NiMH batteries or one-cell Li-ion batteries. It features a 500mA current limit and can deliver output currents in excess of 100mA, depending on the input voltage and output voltage settings.

One of the key benefits of the MAX637 is its high efficiency, which is achieved through a combination of low quiescent current and a pulse-frequency modulation (PFM) control scheme that reduces switching losses at light loads. This efficiency conserves battery life in portable devices, making it a preferred choice for handheld gadgets, medical instruments, and other mobile applications.

The device offers a high switching frequency of up to 150kHz, which allows the use of small, low-cost inductors and capacitors, thus reducing the overall size and cost of the power supply design. Additionally, the MAX637 integrates thermal shutdown and current limit protection features, ensuring reliable operation under a wide range of conditions.

Key features of the MAX637 include:

  • High Efficiency: Minimizes power loss and heat generation.
  • Low Quiescent Current: Extends battery life in portable applications.
  • Adjustable Output Voltage: Offers design flexibility for various applications.
  • Integrated Protections: Includes thermal shutdown and current limit for enhanced safety.
  • Compact Design: High switching frequency enables the use of small passive components.

Whether for powering sensors, microcontrollers, or wireless modules, the MAX637 provides a reliable and efficient power management solution. Its compact size and robust feature set make it an excellent choice for designers seeking to optimize their power supply designs for size, efficiency, and cost.

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