FAN5405UCX

The FAN5405UCX is a highly integrated switch-mode charger designed for single-cell lithium-ion (Li-ion) or lithium-polymer (LiPo) batteries. Known for its efficiency and compact size, it is commonly used in portable electronic devices. The charger operates using a USB or adapter input and supports a wide input voltage range, making it versatile for various charging scenarios.
One of the key features of the FAN5405UCX is its intelligent charging capability, which includes automatic detection of the power source and dynamic adjustment of the charging current. This ensures optimal charging while protecting the battery and device. The chip also integrates safety mechanisms such as over-voltage, over-current, and thermal protection to prevent damage during the charging process.
Additionally, the FAN5405UCX is designed to minimize power loss and maximize efficiency, which is crucial for maintaining battery health and prolonging its lifespan. Its compact package makes it suitable for space-constrained applications, and the device can be easily programmed for different charging profiles, making it a flexible solution for battery management in modern electronic devices.

The FAN5405UCX is a USB-compliant single-cell Li-ion battery charger. Equivalent products include:
1. TI BQ24072 - A power path Li-ion battery charger with USB compatibility.
2. Microchip MCP73831 - A single-cell Li-ion/Li-Polymer charger.
3. Analog Devices ADP5063 - High input voltage linear Li-Ion battery charger.
4. Maxim MAX14690 - A USB-compliant charger with integrated FETs.
Ensure compatibility in terms of electrical specifications and pin configuration when considering alternatives.

The FAN5405UCX is a USB-compliant single-cell Li-ion battery charger with integrated power path management. It supports up to 1.25A charging current and can operate from a USB or an AC adapter input. Key features include:
1. Power Path Management: Ensures efficient power distribution between the system load and battery charging.
2. Dynamic Power Management (DPM): Prevents overloading of the input source by adjusting the charging current.
3. Battery Preconditioning: Safely charges deeply discharged batteries by initiating with a low current.
4. Thermal Regulation: Reduces charge current to manage heat dissipation and maintain safe operation.
5. Status Indicators: Provides LED status outputs for charging, charge complete, and fault indications.
6. Safety Features: Includes over-voltage protection, under-voltage lockout, and thermal limit protection.
7. Programmable Charging Current and Termination: Allows customization for different battery specifications.
8. Small Package: Comes in a compact WLCSP package, making it suitable for space-constrained applications.
These features make the FAN5405UCX ideal for portable devices requiring efficient and safe battery charging solutions.

The FAN5405UCX is a USB-compliant single-cell lithium-ion battery charger IC with integrated power path management. It typically comes in a 25-bump WLCSP (Wafer Level Chip Scale Package) package. Each bump (or pin) on the WLCSP package serves a specific function:
1. VBUS - USB input voltage.
2. PMID - Power management input/output node.
3. SW - Switch node for the DC-DC converter.
4. VBAT - Battery connection.
5. GND - Ground.
6. SCL/SDA - I²C communication lines for control and data exchange.
7. INT - Interrupt line.
8. STAT - Status indication.
9. CE - Charge enable.
10. OTG - Boost operation mode.
11. TS - Temperature sensing input.
12. PG - Power good indicator.
The IC is designed for efficient battery charging with features like constant current/constant voltage regulation, I²C programmability, and protections against over-voltage, over-current, and thermal conditions. It is commonly used in portable consumer electronics to manage battery charging from a USB source, ensuring safe and efficient charging cycles.

The FAN5405UCX is manufactured by ON Semiconductor. ON Semiconductor, now known as onsemi, is a multinational company that specializes in semiconductor manufacturing. It provides a wide range of products, including power and signal management, logic, discrete, and custom devices for various applications such as automotive, industrial, computing, consumer electronics, and communications. The company is known for its focus on energy-efficient innovations and solutions that contribute to reducing the overall energy consumption of electronic systems.

The FAN5405UCX is a highly integrated switch-mode charger designed for portable devices. Its primary application areas include smartphones, tablets, digital cameras, and other portable electronics that require efficient and compact battery charging solutions. The device supports USB charging, making it ideal for gadgets that utilize USB power sources. It also features programmable charge current and voltage, making it suitable for applications requiring flexibility in charging parameters. Additionally, it's used in wearable technology and power banks due to its compact size, high efficiency, and built-in safety features, such as over-voltage and over-temperature protection.

The FAN5405UCX is typically available in a 25-bump, 1.6mm x 2.1mm, 0.4mm pitch CSP (Chip Scale Package).