ON Semiconductor NCP391FCALT2G Battery Charge Controller

The ON Semiconductor NCP391FCALT2G is a robust and versatile battery charge controller designed to cater to a wide range of portable and wearable devices. This advanced charge controller is specifically engineered to provide safe and efficient charging for single-cell Li-ion and Li-polymer batteries, which are commonly found in smartphones, tablets, wireless earbuds, and other compact electronic gadgets.

One of the key features of the NCP391FCALT2G is its precision over-voltage protection (OVP), which ensures that the battery is protected from receiving excess voltage during the charging process. This feature is critical for maintaining the longevity and safety of the battery, preventing potential overcharge scenarios that could lead to overheating or even catastrophic failure.

Additionally, the device boasts a low quiescent current, which is particularly important for battery-powered applications where energy efficiency is paramount. By minimizing the current draw when the device is in standby mode, the NCP391FCALT2G helps to extend the overall battery life of the end product, ensuring that devices remain functional for longer periods between charges.

Key Specifications:

• Input Voltage Range: 2.3V to 5.5V
• Over-Voltage Lockout (OVLO): Adjustable via external resistor
• Over-Voltage Protection (OVP): 4.35V (typical)
• Quiescent Current: 0.9 µA (typical)
• Operating Temperature Range: -40°C to +85°C
• Packaging: Ultra-small 1.2mm x 1.0mm WLCSP-6

The NCP391FCALT2G also features an automatic recharge function. This function initiates a new charging cycle when the battery voltage falls below a certain threshold, ensuring that the device always maintains an optimal charge level. Furthermore, the device is designed with a chip enable (EN) pin, allowing the user to enable or disable the charge controller as needed, providing additional control over the power management of the device.

With its compact WLCSP-6 package, the NCP391FCALT2G is an ideal solution for space-constrained applications. Its high level of integration and ease of use make it an excellent choice for designers looking to incorporate reliable battery charging capabilities into their next-generation portable devices.