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MAXIM INTEGRATED / ANALOG DEVICES MAX639CPA Step-Down Buck Converter
The MAX639CPA+ is a high-efficiency, low quiescent current step-down (buck) DC-DC converter in an 8-pin DIP package. It delivers up to 225mA of output current with a wide input voltage range from 4V to 11.5V. The device features a current limiting pulse frequency modulation (PFM) control scheme, combining the high efficiency of pulse width modulation (PWM) at heavy loads with minimal supply current of only 10µA during operation. It provides a preset output voltage of 5V, adjustable from 1.3V to the input voltage, suitable for various voltage conversion applications. Equipped with an internal 1A power MOSFET switch, ideal for low to medium power, such as converting a 9V battery to 5V, 3.3V, or 3V, and replacing linear regulators for higher efficiency. Features include low quiescent current, high efficiency (up to 94% at 25mA load), low battery detection, and adjustable switching times, making it suitable for portable device power management.
MAXIM INTEGRATED / ANALOG DEVICES MAX639CPA Step-Down Buck Converter Specifications:
- Input Voltage Range: 4V to 11.5V
- Output Current: Up to 225mA
- Output Voltage: Preset 5V, adjustable from 1.3V to V+
- Maximum Output Voltage: 5V
- Quiescent Current: 10µA
- Efficiency: Up to 94% at 25mA load
- Internal Switch Current: 1A
- Operating Temperature: 0°C to +70°C
- Pin Package: 8 DIP
- Switching Control: PFM with PWM benefits
- Low-Battery Detection
- Suitable for replacing linear regulators
- Miniature package ideal for portable applications
Buy the MAXIM Series Step-Down Buck: MAX639CPA
Experience reliable power management with the MAXIM Series MAX639CPA. This high-efficiency buck converter delivers up to 225mA output current from a 4V to 11.5V input range. Its low quiescent current of just 10µA makes it perfect for portable devices, while the adjustable output voltage from 1.3V to 5V ensures versatile applications. Featuring an internal 1A MOSFET and pulse-frequency modulation control, it provides high efficiency—up to 94%—with minimal power loss. Ideal for battery-powered systems replacing linear regulators and optimizing energy use in compact electronic designs.
Order your MAXIM Series MAX639CPA today and give your portable projects the dependable, high-efficiency power they deserve.
Frequently Asked Questions
Where can I buy MAXIM INTEGRATED / ANALOG DEVICES MAX639CPA?
You can click on the BUY or RFQ button to purchase MAX639CPA from an authorized MAXIM INTEGRATED / ANALOG DEVICES distributor.
How do I troubleshoot issues or seek technical support for part MAX639CPA?
You can download the MAX639CPA datasheet or visit the MAXIM INTEGRATED / ANALOG DEVICES website for support.
Who is the manufacturer of MAX639CPA?
MAXIM INTEGRATED / ANALOG DEVICES