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MAXIM INTEGRATED / ANALOG DEVICES MAX1644EAE Step-Down Regulator

The MAX1644 is a high-efficiency, synchronous, step-down DC-DC regulator designed for applications such as PC cards, CPUs, and bus-termination boards. It features internal PMOS and NMOS switches, delivering up to 2A load currents with efficiencies up to 95%. The device supports preset voltages of 3.3V or 2.5V, or adjustable output from 1.1V to VIN, with switching frequencies up to 350kHz. It operates in constant-off-time PWM mode with Idle Mode for light loads, includes soft-start, low-dropout, and shutdown modes, and is housed in a 16-pin SSOP package for easy integration in compact electronics. It ensures reliable power conversion with high accuracy and low power losses, ideal for portable and desktop systems.

Authorized Distributors
Source:Newark
Part No:MAX1644EAE+
Stock:3
Inv Date:06-05-2026
Price: Unit price: $14.95
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Source:DigiKey
Part No:MAX1644EAE+
Stock:304
Inv Date:06-05-2026
Price: Unit price: $14.94
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Part No:MAX1644EAE+
Stock:260
Inv Date:06-06-2026
Price: Unit price: $14.94
Buy/RFQ:
Part No:MAX1644EAE+
Stock:1
Inv Date:06-06-2026
Price: N/A
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MAXIM INTEGRATED / ANALOG DEVICES MAX1644EAE Step-Down Regulator Specifications:

  • Input Voltage Range: 3V to 5.5V
  • Output Voltage: Preset 3.3V or 2.5V, or adjustable from 1.1V to VIN
  • Maximum Load Current: 2A
  • Switching Frequency: Up to 350kHz
  • Efficiency: Up to 95%
  • Internal Switch Resistance: 70mΩ (PMOS at 4.5V), 100mΩ (NMOS at 3V)
  • Soft-Start: Adjustable, limits surge current
  • Shutdown Mode: Reduces supply current to <1pA
  • Operating Temperature Range: -40°C to +85°C
  • Package: 16-pin SSOP
  • Thermal Dissipation: 1.2W at TA=+70°C with copper area
  • Protection: Thermal shutdown, output short-circuit
  • Control Modes: Constant-off-time PWM, Idle Mode, low-dropout, 100% duty cycle

Buy the Maxim Series MAX1644 Step-Down Regulator: 2A Adjustable Switching Power Supply

Enhance your power management with the Maxim Series MAX1644 step-down regulator, supporting up to 2A at 95% efficiency. Its internal switches eliminate external Schottky diodes, simplifying design and reducing component count. Features include adjustable output voltage from 1.1V to VIN, soft-start, Idle Mode for light loads, and a high switching frequency of 350kHz for compact solutions. Its robust thermal protection, low shutdown current, and versatile modes make it ideal for portable electronics, CPUs, and desktop applications. Purchase online today for reliable, efficient power solutions.

Order your Maxim Series MAX1644 step-down regulator today and ensure your power supply systems operate efficiently with high accuracy and low losses.

Frequently Asked Questions

Where can I buy MAXIM INTEGRATED / ANALOG DEVICES MAX1644EAE?

You can click on the BUY or RFQ button to purchase MAX1644EAE from an authorized MAXIM INTEGRATED / ANALOG DEVICES distributor.

How do I troubleshoot issues or seek technical support for part MAX1644EAE?

You can download the MAX1644EAE datasheet or visit the MAXIM INTEGRATED / ANALOG DEVICES website for support.

Who is the manufacturer of MAX1644EAE?

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