Nisshinbo Micro Devices Inc. has unveiled two advanced battery protection ICs—NB7123 and NB7130—tailored for compact, battery-powered devices such as smartphones, wearables, hearing aids, and handheld terminals. These ICs come equipped with a full suite of essential and advanced safety features to ensure maximum reliability and user safety.
The NB7123 and NB7130 incorporate high-accuracy overcharge and over-discharge voltage detection (OVP & UVP), helping extend battery life by allowing operation close to threshold limits. This level of precision is critical in wearable devices to prevent battery failures that could potentially harm users.
Among the other notable safety enhancements are:
- Overcurrent protection (OCP) with high-accuracy detection using a low-sense voltage to minimize heat generation.
- 0 V battery charging inhibition voltage, adjustable in 0.001 V steps, ensuring protection from internal short circuits in deep-drained batteries.
- TIN pin integration for battery temperature sensing.
- Forced standby function via an STB input, significantly reducing current draw and unwanted discharge when idle.
From a design standpoint, the NB7123 leverages high-side MOSFETs that allow ground reference simplification by connecting directly to the battery’s negative terminal, aided by a built-in charge pump. Meanwhile, the NB7130 uses low-side MOSFETs and offers a similar level of safety and control without requiring external components.
Both ICs are optimized for space-constrained applications and are offered in compact WLCSP-8-ZA2 (NB7123) and WLCSP-8-ZA1 (NB7130) packages, aligning with the evolving demands of miniaturized electronics.
With the NB7123 and NB7130, Nisshinbo reinforces its commitment to delivering safe, reliable, and efficient battery protection solutions for the next generation of portable technologies.
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