Charging Power Management IC / IN4054 / LTH7 / 4.25V ~ 6.5 / monolithic miniature thermal regulation linear battery management chip

■ Product Overview IN4054 is a complete monolithic lithium-ion battery constant current / constant voltage linear power management chip. It is thin and small size makes it easy to portable packaging applications. It is worth mentioning that, IN 4054 specially designed for USB power specifications. Thanks to the internal MOSFET structure, does not require an external resistor and blocking diode in the application. When high-energy operation and high peripheral temperature, thermal feedback can control the charging current to reduce the chip temperature. Charging voltage is limited to 4.2V, the charging current through an external resistor. After reaching the target charging voltage, when the charge current is reduced to 1/10 of the set value, IN 4054 will automatically end the charging process. When the input (plug or USB powered) after unplugging, IN 4054 automatically enters a low current state, the battery drain current will drop below 2μA. IN 4054 can also be set to stop working state, so that the supply current to 25μA. IN 4054 uses a unique patented internal structure to ensure that the battery is automatically reversed when the chip into the protected status, to ensure that the IC is not causing the battery self-discharge breakdown caused the accident. While ensuring IN ESD capability 4054 reaches 7KV (HBM). Remaining features include: charge current monitoring, input undervoltage lockout, automatic re-charging and charging and start charging full mark. ■ use? Phone, PDA, MP3? Bluetooth applications ■ Features? Programmable charge current up to 500mA.? Does not need MOSFET, sense resistor and blocking diode? Small size to achieve the lithium-ion battery is fully linear charge management? constant current / constant voltage operation and adjust the heat so that the high-efficiency battery management, there is no danger of overheating? USB interface management from monolithic lithium-ion batteries? pre-charge voltage is 4.2V? 1%? charge current monitor output? charging status signs? 1/10 charge current termination? provide 25μA current stop working? 2.9V trickle charge threshold voltage? soft start to limit inrush current of the current? reverse battery protection? ESD (HBM)> 7KV