ROHM 1-Cell Lithium-Ion/Polymer Linear Battery Charger IC, Surface Mount, UMMP10LZ1824 Package, 2.9 V to 5.5 V BD71631QWZ-TR

ROHM BD71631QWZ-TR is a linear charger IC specifically engineered for 1-cell lithium-ion and lithium polymer rechargeable batteries, suitable for applications requiring low charge voltages. The device features a surface mount UMMP10LZ1824 package with 10 pins, making it suitable for compact electronic device designs.

Operating with a supply voltage between 2.9 V and 5.5 V, this charger IC supports adjustable termination currents ranging from 50 microamps to 10 milliamps, allowing designers to precisely tailor charging profiles via external resistors. This enables optimized battery charging performance and safety.

The IC incorporates a low quiescent battery current mode that conserves energy when idle, enhancing overall power efficiency. Additionally, the NTC thermistor input enables temperature qualified charging, ensuring the battery is charged only within safe temperature limits.

To provide clear status indication, the IC features an open-drain output for connecting a charge indicator LED. It includes a fixed 10-hour safety timer that automatically terminates the charging process, preventing battery damage from extended charging periods. Built-in thermal shutdown safeguards the IC from overheating scenarios.

Further protective features include under voltage lockout to prevent charging below safe voltage levels and battery overvoltage protection to prevent battery damage from excessive voltage. The device is compliant with RoHS standards and operates reliably across a wide temperature range from -30°C to 105°C, making it suitable for a variety of industrial, consumer, and automotive electronics applications.

Surface mount UMMP10LZ1824 package with 10 pins for compact designs. Adjustable termination current from 50µA to 10mA with external resistors. Low quiescent current reduces power consumption during standby. NTC thermistor input for temperature qualified charging safety.

Open-drain output for charge status LED indication. Fixed 10-hour safety timer prevents overcharging risks. Thermal shutdown protection against overheating. Under voltage lockout and overvoltage battery protection. RoHS compliant and reliable operation from -30°C to 105°C.

This battery charger IC is ideal for applications in consumer electronics, portable battery-powered devices, and various industrial and automotive battery management systems. It provides reliable and efficient charging control with built-in safety mechanisms to protect both the battery and the device.

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