Low Cost Multi-Chemistry Battery Charger Controller The **ISL6251HAZ-T** is a battery charger controller IC manufactured by **Intersil** (now part of Renesas Electronics). Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:
### **Specifications:**
- **Manufacturer:** Intersil (now Renesas Electronics)
- **Part Number:** ISL6251HAZ-T
- **Type:** Battery Charger Controller
- **Package:** 28-lead QFN (Quad Flat No-Lead)
- **Input Voltage Range:** 4.5V to 28V
- **Output Voltage Range:** Adjustable
- **Charging Current:** Programmable up to 8A
- **Switching Frequency:** 300kHz (typical)
- **Efficiency:** High efficiency synchronous buck converter
- **Operating Temperature Range:** -40°C to +85°C
- **Protection Features:** Overvoltage, undervoltage, overcurrent, and thermal shutdown
### **Descriptions:**
- The ISL6251HAZ-T is a highly integrated battery charger controller designed for Li-ion/Li-polymer battery packs.
- It supports **2-, 3-, and 4-cell battery configurations** with programmable charge current and voltage.
- It includes **AC adapter current limiting** to prevent overloading the AC adapter.
- The IC uses a **synchronous buck topology** for high efficiency and low heat dissipation.
- It is commonly used in **notebook computers, portable devices, and power management applications**.
### **Features:**
- **Wide Input Voltage Range (4.5V to 28V)** – Compatible with various AC adapters.
- **Programmable Charge Current (Up to 8A)** – Adjustable via external resistor.
- **Precision Battery Voltage Regulation (±0.5%)** – Ensures accurate charging.
- **AC Adapter Current Limiting** – Prevents adapter overload.
- **Integrated MOSFET Drivers** – Reduces external component count.
- **Dynamic Power Management (DPM)** – Optimizes power delivery.
- **Thermal Shutdown & Fault Protection** – Enhances system safety.
- **Low Quiescent Current** – Improves efficiency in standby mode.
This information is based on the manufacturer's datasheet and technical documentation. For detailed electrical characteristics and application circuits, refer to the official datasheet.
