Description
If your project is moving a lot of power around and efficiency is key, the Adafruit LM73100 Ideal Diode breakout is great to keep your power budget tidy. It works with power supplies from 3 to 23V DC up to 5A, acting like a diode to keep current flowing in one direction, but with much lower voltage drop compared to a traditional diode.
The internal chip uses two back-to-back FETs with a typical Rds(on) of 30 mΩ, resulting in a voltage drop of around 150mV at 5A load. This increases efficiency for setups like solar panels and LiPoly batteries.
Features include solder-free operation with onboard terminal blocks, a green LED indicator that lights when power flows in the correct direction, and an analog current monitor (IMON) for measuring current draw.
The board is on a compact PCB with 9 x 0.1″ breakout pads. Includes a 16-pin header for breadboarding, requiring light soldering, or can be directly wired via terminal blocks.
- Wide input voltage range: 2.7 V to 23 V (28 V absolute max)
- Integrated back-to-back FETs with low On-Resistance: 28.4 mΩ typical
- True reverse current blocking and ideal diode operation
- Fast overvoltage protection
- Typical response times: 1.2 μs (normal), 500 ns (overcurrent)
- Analog load current monitor output (IMON) with ±15% accuracy
- Overtemperature and latch-off protection
- Power Good (PG) indication
- Compact size: 25.6mm x 17.6mm x 11.9mm (1.0″ x 0.7″ x 0.5″)
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