Microprocessor CORE Voltage Regulator Multi-Phase Buck PWM Controller The ISL6553CB is a manufacturer part from **INTERSIL** (now part of Renesas Electronics). Below are its specifications, descriptions, and features based on factual information:
### **Specifications:**
- **Manufacturer:** INTERSIL (now Renesas Electronics)
- **Part Number:** ISL6553CB
- **Type:** PWM Controller
- **Function:** Multi-Phase Buck PWM Controller
- **Input Voltage Range:** Typically supports 5V or 12V input (exact range may vary)
- **Output Voltage Range:** Adjustable (depends on external components)
- **Number of Phases:** Supports multi-phase operation (commonly 2, 3, or 4 phases)
- **Switching Frequency:** Adjustable (typically in the range of 100kHz to 1MHz)
- **Package Type:** SOIC (Small Outline Integrated Circuit)
- **Operating Temperature Range:** Industrial-grade (-40°C to +85°C or similar)
### **Descriptions:**
The ISL6553CB is a **multi-phase PWM controller** designed for **high-efficiency voltage regulation** in power supply applications, such as **CPU core voltage regulators (VRMs)**. It provides precise voltage regulation, current balancing between phases, and protection features.
### **Features:**
- **Multi-Phase Operation:** Supports 2, 3, or 4-phase configurations for high-current applications.
- **Precision Voltage Regulation:** Uses a high-accuracy DAC for output voltage control.
- **Adaptive Phase Control:** Dynamically adjusts the number of active phases for efficiency optimization.
- **Overcurrent Protection (OCP):** Monitors and limits output current.
- **Overvoltage Protection (OVP):** Safeguards against excessive output voltage.
- **Programmable Soft-Start:** Allows controlled power-up sequencing.
- **Adjustable Switching Frequency:** Can be set via external components.
- **Differential Remote Voltage Sensing:** Ensures accurate voltage regulation at the load.
For exact electrical characteristics and application details, refer to the **official datasheet** from INTERSIL/Renesas.
