LTC4077EDD#TRPBF

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PMIC - Battery Chargers are mainly used for charging small batteries in embedded systems, such as calculators and mobile devices. LTC4077EDD#TRPBF is a PMIC Battery Charger from Linear Technology. It is designed for compact systems and offers high efficiency, low quiescent current, and low ripple for non-standby and digital applications.

The LTC4077EDD#TRPBF is a single-cell Li+ battery charger that operates over a 0.2V to 4.2V input voltage range, and provides a constant current/register voltage charge with automatic termination and programmability through an external resistor. Its wide input voltage range and low 101μA quiescent current make the LTC4077EDD#TRPBF suitable for a wide range of applications, such as IoT applications or battery-charging application.

The LTC4077EDD#TRPBF is not limited by the presence of USB power sources, and offers excellent compatibility with power adapters and wall chargers as well as battery sources. The charger is designed so that it can output current up to 1.5A and operate with power sources with a maximum of 6V. The battery charger utilizes a Constant-Current/Constant-Voltage (CC/CV) charging algorithm, in which the output current is maintained at a constant rate while the cell voltage is increased until a predetermined voltage is reached. This predetermined voltage can be set using a single external resistor.

The LTC4077EDD#TRPBF also offers an interrupt pin, allowing the system to monitor battery voltage. The interrupt pin is connected to an internal comparator, which triggers an interrupt whenever the battery voltage drops below the preset threshold. This feature ensures that the battery is protected from over-discharge and over-heating, which can lead to damage.

In addition to the basic CC/CV charging algorithm, the LTC4077EDD#TRPBF also provides several other protection and monitoring functions. The charger includes temperature-sense inputs to monitor the ambient temperature of the battery and allows for thermal protection. It also offers current limiting, reverse current protection, and short-circuit protection. These features ensure that the battery charger is not damaged due to abnormal operating conditions.

The LTC4077EDD#TRPBF features low quiescent and low ripple output, making it ideal for high performance applications. It is available in 10 pin MSOP-EP and 8 pin TSSOP packages, making it well suited for space-constrained applications. Furthermore, the device is AEC-Q100 qualified making it suitable for automotive applications.

The LTC4077EDD#TRPBF is a high efficiency, low quiescent current battery charger that is ideal for use in embedded systems. Its wide input voltage range, current-limiting, over-discharge and short-circuit protection make it suitable for a variety of applications. The charger also offers a temperature monitoring system for improved reliability, and low ripple output for cleaner power.

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