The company says the NB7130 is an exceptional protection IC equipped with all standard safety features, such as overcharge/over-discharge voltage, charge/discharge overcurrent and short circuit detection, making the application highly reliable. The additional safety measures are mainly focussed on the detection range and improved accuracy level of these measurements, which is particularly important for small devices worn on the human body to prevent unintentional injuries when the Li-ion battery may fail, such as:

·         High-accuracy overcharge and over-discharge detection (OVP & UVP) - Both support extending battery life as the battery voltage can get nearer to the       detection threshold level.

·         High-accuracy overcurrent detection (OCP) and a low current sense voltage.- Resulting in a more accurate overcurrent detection, but also the use of a small (Rsens) current-sense resistor causes lower heat generation at high currents.

·         High-accuracy 0 V Battery Charging Inhibition Voltage. - Charging a deep discharged battery from 0 V can cause an internal short circuit, the inhibition threshold voltage can be set in a 0.001 V step rate from a safety perspective.

·         A TIN pin is available to connect a thermal sensor to monitor the temperature of the battery cell.

An additional STB input offers a Forced Standby Function to set the product into a standby mode. Current consumption and further battery discharge can be significantly reduced in this way, the IC returns to the normal mode again using the VM pin.

The NB7130 is available in a space-saving WLCSP-8-ZA1 package, suitable for use in small-sized applications and gadgets.