LTC4085EDE-3#PBF

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

LTC4085EDE-3#PBF is a stand-alone lithium-ion battery charger designed to provide high efficiency, safety and flexibility. It is part of Linear Technology’s family of PMIC devices integrated with battery charging and load control circuits. It is widely used in mobile device applications such as mobile phones and digital cameras.

Features

• Built-in battery temperature protection: LTC4085EDE-3#PBF monitors battery temperature during charging and limits the charging current or turns off the charger in case of excessive temperature increase as it has an on-chip NTC thermistor.
• Integrated and thermal management: It offers an integrated MOSFET and Output current limiting to protect against overloading the charger.
• Thermal regulation: It provides thermal regulation, adjustable current-limit and thermal shutdown to ensure proper and safe operation under extreme temperature conditions.
• Battery low voltage lockout: Battery low voltage lockout prevents the battery from being charged if the battery voltage falls below a preset voltage.
• Short-circuit protection: The charger features active protection against input and battery short-circuiting.
• Connector type: The charger device is available in a package with a standard 100-pin I/O connector.

Applications

Due to its wide range of functionalities, the satellite industry has recognized LTC4085EDE-3#PBF as an ideal battery charger of choice for their applications. As the satellite market is continuously becoming more demanding, the LTC4085EDE-3#PBF has the flexibility and performance necessary for those tough environments. The key advantages of the LTC4085EDE-3#PBF include high efficiency, short circuit protection, temperature control, and robust construction that makes it ideal for applications in satellite, spacecraft and other extreme environment applications. The charger also has several applications in the automotive, industrial, medical and consumer electronic markets.

Working Principle

The LTC 4085EDE-3#PBF is an autonomous single-cell lithium-ion battery charger designed with a single stage current-limit regulation loop. The charge current is determined by the voltage on the PROG pin. The charger also features an optional output voltage that is adjustable using external resistors. The charger regulates the charge current limit based on the battery voltage and the selected charge current. The charger includes circuitry to protect the battery from overcharging, excessive temperature, and short-circuiting. The thermal control circuit regulates the charge current to ensure proper operation within a safe temperature range.

The charger also features a power good signal, PROG signal, and two overvoltage/overcurrent flags (OVL and OVP) that can be used to detect abnormal conditions and protect the battery from charging too rapidly. Additionally, the battery voltage can be monitored with the VBAT signal, while the input current is monitored by the IIN signal. The PROG signal also controls load current when the battery is in a low voltage condition. By monitoring the value of this signal, the load current can be shut off to prevent overcharging.

The charger also features automatic charging sequence control and short circuit protection. The charger is designed such that the battery is prevented from discharging when the charger is not connected. On the other hand, when a charger is connected, the charger will start automatically, even if the load is on or off. The charger also includes a current protection circuit, which ensures that the charger does not provide too much current in the event of a battery fault. Finally, the charger provides OVP and OVL flags, which can be used to detect an abnormal condition and protect the battery from being charged too rapidly.

The specific data is subject to PDF, and the above content is for reference