Charging System Safety Circuit The ISL9209BIRZ is a battery charger controller manufactured by INTERSIL (now part of Renesas Electronics). Below are its specifications, descriptions, and features based on factual information from Ic-phoenix technical data files:
### **Specifications:**
- **Manufacturer:** INTERSIL (Renesas Electronics)
- **Part Number:** ISL9209BIRZ
- **Type:** Battery Charger Controller
- **Package:** 20-Lead QFN (4x4 mm)
- **Input Voltage Range:** 4.5V to 28V
- **Charging Voltage Range:** Adjustable (supports Li-ion/Polymer batteries)
- **Charge Current:** Programmable up to 4A
- **Operating Temperature Range:** -40°C to +85°C
- **Control Interface:** I²C (for configuration and monitoring)
- **Efficiency:** High-efficiency synchronous buck converter
### **Descriptions:**
The ISL9209BIRZ is a high-performance battery charger controller designed for single-cell Li-ion or Li-polymer battery applications. It integrates a synchronous buck converter for efficient power conversion and supports I²C communication for flexible configuration. The device is suitable for portable electronics, including smartphones, tablets, and other battery-powered devices.
### **Features:**
- **Wide Input Voltage Range (4.5V–28V):** Supports various power sources, including USB and adapters.
- **Programmable Charge Current (Up to 4A):** Adjustable via I²C for optimal charging.
- **Dynamic Power Management (DPM):** Prevents input source overload.
- **Thermal Regulation:** Protects the IC from overheating.
- **Battery Voltage Monitoring:** Ensures safe charging conditions.
- **Charge Termination:** Supports automatic full-charge cutoff.
- **Safety Features:** Includes overvoltage, overcurrent, and thermal shutdown protection.
- **I²C Interface:** Allows real-time monitoring and configuration of charging parameters.
This information is based on the manufacturer's datasheet and technical documentation. For detailed electrical characteristics and application circuits, refer to the official datasheet.
