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Ideal Diode Protection Module with LM73100, 3.3 V to 20 V Input, 5 A Current, Reverse Polarity and Overvoltage Protection
The 7Semi LM73100 Ideal Diode Protection Module is a compact and high-efficiency power protection solution designed to safeguard electronic systems from reverse current, reverse polarity, undervoltage, and overvoltage conditions. Built around the Texas Instruments LM73100 ideal diode controller, the module supports input voltages from 3.3 V to 20 V and continuous load currents up to 5 A. Unlike conventional diode-based protection circuits, it delivers significantly lower power loss and improved efficiency, making it ideal for battery-powered and high-current applications.
The module automatically permits forward current flow while preventing reverse current from flowing back into the power source, ensuring reliable operation in power multiplexing, battery backup, and power OR-ing circuits. Integrated adjustable undervoltage lockout (UVLO), overvoltage lockout (OVLO), Power Good status output, and analog current monitoring through the IMON pin provide enhanced protection and system diagnostics. Its compact design makes it suitable for embedded electronics, industrial automation, robotics, IoT devices, and portable equipment.
Key Features
- Texas Instruments LM73100: Based on the LM73100 ideal diode controller for efficient power path protection.
- Wide Input Voltage: Supports input voltages from 3.3 V to 20 V.
- High Current Capability: Handles up to 5 A continuous load current.
- Reverse Current Blocking: Prevents unwanted current flow back to the power source.
- Reverse Polarity Protection: Protects connected electronics from incorrect power supply polarity.
- Adjustable UVLO: Configurable undervoltage lockout protects systems from low supply voltage.
- Adjustable OVLO: Configurable overvoltage lockout safeguards against excessive input voltage.
- Power Good Output: Provides power status indication for system monitoring.
- Current Monitoring: IMON pin enables analog current measurement for diagnostics and control.
- Adjustable Slew Rate: Controls output voltage rise time to minimise inrush current.
- High Efficiency: Lower power loss than conventional diode protection circuits.
- Compact Module: Suitable for embedded, industrial, and battery-powered applications.
Applications
- Battery-powered devices
- Battery backup systems
- Power OR-ing circuits
- Industrial automation
- Embedded electronics
- Robotics
- IoT devices
- Portable instruments
- DC power distribution
- Power supply protection
- Automotive and industrial control systems
