The chip makes use of low energy to cost batteries from gentle or warmth, protects batteries, and works for units like sensors, remotes, and trackers.
Asahi Kasei Microdevices (AKM) has launched the AP4413 collection, a set of low present energy administration ICs (PMICs) designed for battery charging in vitality harvesting functions. The AP4413 collection helps battery charging with a present consumption of 52 nA and contains 4 variants with voltage thresholds aligned with a number of rechargeable battery sorts. The AP4413 is packaged in a 3.0 × 3.0 × 0.37 mm HXQFN and entered mass manufacturing in February 2025.
The collection contains AKM’s voltage monitoring system, which permits battery charging by way of vitality harvesting. This perform is utilized in functions akin to distant controls, Bluetooth® trackers, and IoT sensors, which have used disposable batteries. This shift is famous in Europe, the place Regulation (EU) 2023/1542 helps the analysis of rechargeable batteries as a substitute.
AKM has expertise within the growth and manufacturing of PMICs for vitality harvesting. These ICs enable system designers to make use of environmental vitality sources, akin to indoor gentle and physique warmth, to energy digital units that use batteries. That is helpful for IoT sensors, together with CO2 displays, positioned in places with out energy entry and the place battery substitute is troublesome.
A number of the key options of the AP4413 collection embody:
- Makes use of very low energy (52 nA)
- 4 variations for various batteries
- Small 3.0 × 3.0 × 0.37 mm bundle
- Displays battery voltage
- Prices from vitality sources like gentle and warmth
- For units like remotes and sensors
- Works even when battery is empty
- Protects battery from over-draining
Power harvesting for battery charging presents challenges on account of low and unstable voltage and present ranges. To deal with this, the AP4413 collection retains energy consumption low and features a voltage monitoring system that protects towards battery discharge, supporting startup and restoration. Using an inline capacitor (see Determine 2) permits the AP4413 collection to function programs when the battery is discharged whereas persevering with to cost the battery.
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