Dual PWM Controller with DDR Memory Option for Gateway Applications The ISL6444CA is a dual-output PWM 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:**
- **Input Voltage Range:** 4.5V to 24V
- **Output Voltage Range:** Adjustable (dependent on external components)
- **Switching Frequency:** 300kHz (fixed)
- **Output Current:** Supports external MOSFETs (current capability depends on external components)
- **Efficiency:** High efficiency due to synchronous rectification
- **Operating Temperature Range:** -40°C to +85°C
- **Package:** 16-Lead QFN (Quad Flat No-Lead)
### **Descriptions:**
- The ISL6444CA is a dual-output PWM controller designed for DC-DC power supply applications.
- It integrates two synchronous buck controllers, allowing it to regulate two independent voltage rails.
- The controller supports high-efficiency power conversion with adjustable output voltages.
- It includes features such as soft-start, overcurrent protection, and undervoltage lockout (UVLO).
### **Features:**
- **Dual Synchronous Buck Controllers:** Independently regulates two outputs.
- **Adjustable Output Voltage:** Set via external resistor dividers.
- **Fixed-Frequency Operation:** 300kHz switching frequency for predictable noise performance.
- **Soft-Start Function:** Prevents inrush current at startup.
- **Overcurrent Protection (OCP):** Uses external MOSFET RDS(ON) sensing.
- **Undervoltage Lockout (UVLO):** Ensures proper operation under low input voltage conditions.
- **Power-Good (PG) Output:** Monitors output voltage status.
- **Synchronous Rectification:** Improves efficiency by reducing conduction losses.
This information is based on the manufacturer's datasheet and technical documentation. For detailed application-specific requirements, refer to the official datasheet from Renesas Electronics.
