NXP Semiconductors PMIC - Battery Chargers MC34674AEPR2

The MC34674AEPR2DKR-ND is a fully integrated battery charger designed for single-cell Li-Ion and Li-Polymer batteries, optimized for travel charger applications. It supports a high input voltage of up to 28 V, allowing the use of low-cost AC/DC converters. The charger operates in multiple modes, including trickle, constant-current (CC), and constant-voltage (CV), with a selectable CC-mode current ranging from 50 mA to 1.05 A and a fixed CV-mode output voltage of 4.2 V, both with high accuracy. Key features include an internal timer for charge termination, thermal foldback for current limiting, and smart battery connection verification to prevent charging without a battery. The device also incorporates input over-voltage protection and has a low quiescent current draw of less than 1.0 OºA when disabled. It is packaged in a compact 8-lead 2x3 mm UDFN format, making it suitable for space-constrained applications. The operating temperature range is from -20¬8C to 70¬8C, ensuring reliable performance in various environments.