Standalone Li-Ion Switch Mode Battery Charger The LTC4002EDD-8.4#TRPBF is a battery charger controller IC manufactured by Linear Technology (now part of Analog Devices). Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:
### **Specifications:**
- **Manufacturer:** LINEAR (Linear Technology)
- **Part Number:** LTC4002EDD-8.4#TRPBF
- **Package:** DFN-10 (3x3mm)
- **Input Voltage Range:** 4.5V to 32V
- **Battery Voltage:** Up to 8.4V (2-cell Li-Ion/Polymer)
- **Charge Current:** Programmable up to 4A
- **Charge Termination:** C/10 or Timer-Based
- **Efficiency:** Up to 96%
- **Operating Temperature Range:** -40°C to +85°C
### **Descriptions:**
The LTC4002EDD-8.4#TRPBF is a high-efficiency, standalone battery charger controller designed for 2-cell Li-Ion/Polymer batteries. It supports a wide input voltage range and provides constant-current/constant-voltage (CC/CV) charging with programmable charge current and termination. The IC integrates a synchronous buck converter for high efficiency and includes protection features such as input undervoltage lockout (UVLO), battery temperature monitoring, and reverse battery protection.
### **Features:**
- **Standalone Operation:** No external microcontroller required.
- **Programmable Charge Current:** Adjustable via external resistor.
- **Wide Input Voltage Range:** 4.5V to 32V.
- **High Efficiency:** Up to 96% with synchronous rectification.
- **Automatic Recharge:** Initiates charging if battery voltage drops below a threshold.
- **Battery Temperature Monitoring:** Uses NTC thermistor for safe charging.
- **Charge Status Outputs:** Indicates charging, power good, and fault conditions.
- **Input Current Limiting:** Prevents overloading the input supply.
- **Small Footprint:** DFN-10 package (3x3mm) for space-constrained applications.
This information is strictly based on the manufacturer's datasheet and technical documentation.
