High Efficiency, Multi-Chemistry Battery Charger The LTC4009CUF#PBF is a battery charger controller manufactured by Linear Technology (now part of Analog Devices). Below are its specifications, descriptions, and features based on factual information from Ic-phoenix technical data files:
### **Specifications:**
- **Manufacturer:** LINEAR (Linear Technology)
- **Part Number:** LTC4009CUF#PBF
- **Package:** 24-Lead QFN (4mm x 4mm)
- **Input Voltage Range:** 4.5V to 35V
- **Battery Voltage Range:** 1V to 35V
- **Charge Current:** Programmable up to 4A
- **Efficiency:** Up to 96%
- **Operating Temperature Range:** -40°C to +125°C
- **Switching Frequency:** Adjustable (100kHz to 400kHz)
### **Descriptions:**
The LTC4009CUF#PBF is a high-efficiency, standalone battery charger controller designed for multi-chemistry battery charging applications. It supports Li-Ion, LiFePO4, NiMH, and lead-acid batteries. The device integrates a synchronous buck converter and provides accurate charge current and voltage regulation. It features automatic power path management, allowing the system to operate even with a deeply discharged battery.
### **Features:**
- **Wide Input and Battery Voltage Range:** Supports 4.5V to 35V input and 1V to 35V battery voltage.
- **Multi-Chemistry Support:** Compatible with Li-Ion, LiFePO4, NiMH, and lead-acid batteries.
- **Programmable Charge Parameters:** Adjustable charge current (up to 4A) and voltage.
- **Automatic Power Path Management:** Enables system operation while charging.
- **High Efficiency Synchronous Buck Converter:** Up to 96% efficiency.
- **Thermal Regulation:** Reduces charge current to prevent overheating.
- **Battery Detection and Qualification:** Ensures safe charging.
- **Input Current Limit:** Prevents overloading the input source.
- **Status Indicators:** Provides charge status via dedicated pins.
- **Adjustable Timer or C/x Termination:** Configurable charge termination.
This information is strictly based on the manufacturer's datasheet and technical documentation.
