ET95101 | ETEK Microelectronics

Li-Ion Battery Charger, ET95101, ETEK Microelectronics

The ET95101 is a high-performance device for space-limited portable applications: a highly integrated Li-ion battery linear charger. The high input voltage range with input over-voltage protection supports low-cost, non-regulated adapters. The ET95101 has a power output that can charge the battery. If the average system load cannot fully charge the battery during the 10-hour safety timer, the system load can be paralleled with the battery. Battery charging goes through the following three stages: regulation (pre-charge), constant current (CC), and constant voltage (CV).

In all charging stages, the internal control loop monitors the IC junction temperature, and when it exceeds the internal temperature threshold, it reduces the charging current. The charger power level and charging current sensing functions are fully integrated. The charger has a high-precision current and voltage regulation loop and a charging termination function. The charging current value can be programmed via an external resistor.

Features

• Support the application of ultra-low charging current
• Support minimum 1mA charging termination current
• Input voltage dynamic power management
• OUT short-circuit protection and ISET short-circuit detection
• Automatic termination and timer disable mode for missing battery pack(TTDM)