India, May 13 -- Asahi Kasei Microdevices (AKM) has developed the AP4413, a new series of ultra-low current power management ICs (PMICs) ideal for battery charging systems used in energy harvesting applications.

The AP4413 series enables efficient battery charging while consuming an extremely low current of 52 nA and features four variants with voltage threshold characteristics matching several common rechargeable battery types. The AP4413 comes in a tiny 3.0 x 3.0 x 0.37 mm HXQFN package and has been in mass production since February of 2025.

Equipped with AKM's proprietary ultra-low current voltage monitoring system, the AP4413 series enables autonomous charging of a small rechargeable battery via energy harvesting, which is becoming ...