4A, High Efficiency, Multi-Chemistry Battery Charger The **LTC4008EGN-1#TRPBF** is a battery charger controller manufactured by **Linear Technology (now part of Analog Devices)**. Below are its key specifications, descriptions, and features:
### **Specifications:**
- **Manufacturer:** Linear Technology (Analog Devices)
- **Part Number:** LTC4008EGN-1#TRPBF
- **Package:** 16-Lead SSOP
- **Input Voltage Range:** 4.5V to 32V
- **Output Voltage Range:** Programmable up to 32V
- **Charge Current:** Adjustable up to 4A
- **Battery Chemistry:** Li-Ion, Li-Polymer, LiFePO4, Lead-Acid, NiMH, NiCd
- **Switching Frequency:** 300kHz (typical)
- **Efficiency:** Up to 96%
- **Operating Temperature Range:** -40°C to +85°C
### **Descriptions:**
- The LTC4008 is a high-efficiency **standalone battery charger controller** designed for multi-chemistry battery charging.
- It integrates a **synchronous PWM controller**, **power MOSFET drivers**, and charge termination logic.
- Supports **constant-current/constant-voltage (CC/CV)** charging profiles.
- Includes **input current limiting** and **thermal regulation** for safe operation.
### **Features:**
- **Wide Input Voltage Range (4.5V to 32V)** – Suitable for various power sources.
- **Programmable Charge Current (Up to 4A)** – Adjustable via an external resistor.
- **Multi-Chemistry Support** – Works with Li-Ion, LiFePO4, Lead-Acid, NiMH, and NiCd batteries.
- **Automatic Recharge** – Initiates charging when battery voltage falls below a threshold.
- **Input Current Limiting** – Prevents overloading the input supply.
- **Thermal Regulation** – Reduces charge current if temperature exceeds safe limits.
- **Charge Status Indicators** – Provides **C/10** and **charge complete** signals.
- **Low Dropout Operation** – Minimizes power loss during charging.
This IC is commonly used in **portable devices, industrial equipment, and battery backup systems**.
(Note: Always refer to the official datasheet for detailed electrical characteristics and application circuits.)
