Linear lithium-ion battery charger IC supports charging of 4.2 V cells in a compact SOT-23-5 package. The device provides low-power shutdown and automatic recharge functions. Charging features include constant-current, constant-voltage, trickle-charge, charge termination, programmable charge current, soft-start, and undervoltage lockout. The operating supply range is listed as 4 V to 9 V with a -40 °C to +85 °C operating temperature range.