MAX40200AUK+ Ideal Diode – 1A Ultra-Low Voltage Drop Power Switch (SOT-23-5)

Product Description:

The MAX40200AUK+ is a high-performance ideal diode power switch designed to deliver ultra-low voltage drop and high efficiency for low-voltage portable electronic devices. Offering a typical forward voltage drop of just 43mV at 500mA and 85mV at 1A, it significantly outperforms traditional Schottky diodes, maximizing efficiency and extending battery life.

Operating across a 1.5V to 5.5V supply range, the MAX40200AUK+ provides fast, smooth conduction when enabled and effectively blocks current in both directions when disabled. With extremely low leakage (70nA typical), thermal self-protection, and compact SOT-23-5 packaging, it is ideal for modern battery-powered and USB-powered devices.

This ideal diode is widely used in power path management, reverse-current protection, battery switching, and portable device power sequencing.

Key Specifications:

• Model: MAX40200AUK+

• Type: Ideal Diode / Efficient Current Switch

• Package: SOT-23-5

• Operating Voltage Range: 1.5V to 5.5V

• Forward Voltage Drop:

  • 43mV typical @ 500mA

  • 85mV typical @ 1A

• Leakage (Reverse-Biased): 70nA typical, 1.5µA max

• Quiescent Current: 7µA typical, 18µA max

• Reverse Blocking Voltage: Up to 6V (EN low)

• Thermal Protection: Yes

• Operating Temperature: −40°C to +125°C

• Weight: 0.05g

Features:

• Ultra-low voltage drop for maximum power efficiency

• Ideal for battery-operated and low-voltage devices

• Extremely low leakage current

• Thermally self-protecting device

• Blocks reverse current when disabled

• Compact SOT-23-5 package for dense PCB designs

• Wide supply voltage range supports multiple applications

Applications:

• Notebook and tablet power systems

• Portable media players

• Smartphones and handheld electronics

• Wearable and portable medical devices

• USB-powered devices

• Battery OR-ing and reverse-current protection

• Power path management in low-voltage systems

Package Includes:

1 × MAX40200AUK+ Ideal Diode (SOT-23-5)

Note: Image is for representation purpose only.