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MAXIM INTEGRATED / ANALOG DEVICES MAX666ESA Voltage Regulator

The MAX666ESA+ is a dual-mode 5V/programmable micro-power voltage regulator housed in an 8-pin NSOIC package. It can be configured to provide a fixed 5V output without additional components or adjusted from 1.3V to 16V using two external resistors. The device automatically selects between fixed and adjustable modes via the VSET input. Designed for battery-powered applications, it operates with an input voltage range of 2.2V to 16.5V, delivers up to 40mA of output current, and functions with low input-output voltage differentials. Key features include current limiting, low power shutdown, and on-chip low-battery detection circuitry. Its positive output is suitable for remote data acquisition, telemetry, radio-controlled devices, long-life battery systems, and LCD displays. Additional specifications include an operating temperature from -40°C to 85°C, no output overshoot on power-up, an output voltage range from 4.75V to 5.25V at VSET=GND, a minimum load current of 5μA, line regulation up to 0.35%/V for input voltages between 2V and 15V, and load regulation of 7 ohms at 1mA to 20mA output current.

Authorized Distributors
Source:Newark
Part No:MAX666ESA+
Stock:120
Inv Date:06-05-2026
Price: Unit price: $8.55
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Source:DigiKey
Part No:MAX666ESA+
Stock:56
Inv Date:06-05-2026
Price: Unit price: $8.55
Buy/RFQ:
Part No:MAX666ESA+
Stock:443
Inv Date:06-06-2026
Price: Unit price: $8.55
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Part No:MAX666ESA
Stock:0
Inv Date:06-06-2026
Price: N/A
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MAXIM INTEGRATED / ANALOG DEVICES MAX666ESA Voltage Regulator Specifications:

  • Input Voltage Range: 2.2V to 16.5V
  • Output Voltage: 4.75V to 5.25V at VSET=GND
  • Output Current Capability: Up to 40mA
  • Operating Temperature: -40°C to 85°C
  • Dropout Voltage: Approx. 1V at full load
  • Line Regulation: Up to 0.35%/V for input voltages 2V to 15V
  • Load Regulation: 7 ohms at 1mA to 20mA load
  • Low Quiescent Current: 5μA minimum load
  • Low Power Shutdown: Yes
  • Low Battery Detection: Integrated circuitry
  • No Output Overshoot on Power Up: Yes
  • Package: 8-pin NSOIC

Buy the Maxim MAX666ESA+ – Reliable 5V Adjustable Power Regulator for Industrial Applications

Purchase the Maxim MAX666ESA+ online today to ensure your battery-powered systems have a reliable, low-noise, adjustable 5V power source with built-in low-battery detection for enhanced system safety and performance. Its compact 8-pin NSOIC package makes integration straightforward, while features like current limiting and low power shutdown optimize energy efficiency. Perfect for data acquisition, telemetry, remote controls, and LCD display applications, this regulator provides stable voltage output from 2.2V to 16.5V and operates over a temperature range of -40°C to 85°C, ensuring dependable operation in diverse environments.

Buy Maxim MAX666ESA+ now and benefit from low quiescent current, integrated low-battery detection, and versatile adjustable output for your battery-powered projects.

Frequently Asked Questions

Where can I buy MAXIM INTEGRATED / ANALOG DEVICES MAX666ESA?

You can click on the BUY or RFQ button to purchase MAX666ESA from an authorized MAXIM INTEGRATED / ANALOG DEVICES distributor.

How do I troubleshoot issues or seek technical support for part MAX666ESA?

You can download the MAX666ESA datasheet or visit the MAXIM INTEGRATED / ANALOG DEVICES website for support.

Who is the manufacturer of MAX666ESA?

MAXIM INTEGRATED / ANALOG DEVICES

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