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ISL6531CB from INTERSIL

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ISL6531CB

Manufacturer: INTERSIL

Dual 5V Synchronous Buck Pulse-Width Modulator (PWM) Controller for DDRAM Memory VDDQ and VTT Termination

Partnumber Manufacturer Quantity Availability
ISL6531CB INTERSIL 2 In Stock

Description and Introduction

Dual 5V Synchronous Buck Pulse-Width Modulator (PWM) Controller for DDRAM Memory VDDQ and VTT Termination The ISL6531CB is a voltage regulator IC manufactured by **INTERSIL** (now part of Renesas Electronics). Below are its key specifications, descriptions, and features based on available data:  

### **Specifications:**  
- **Input Voltage Range:** 4.5V to 5.5V  
- **Output Voltage Range:** Adjustable (via external resistors) or fixed (e.g., 3.3V, 5V)  
- **Output Current:** Up to 3A (with external MOSFETs)  
- **Switching Frequency:** 300kHz (typical)  
- **Efficiency:** High efficiency due to synchronous rectification  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package Type:** SOIC (Small Outline Integrated Circuit)  

### **Descriptions:**  
- The ISL6531CB is a **PWM (Pulse-Width Modulation) controller** designed for **DC-DC buck (step-down) converters**.  
- It supports synchronous rectification for improved efficiency.  
- Includes **overcurrent protection (OCP)** and **undervoltage lockout (UVLO)** for system safety.  
- Used in applications such as **motherboard power supplies, networking equipment, and embedded systems**.  

### **Features:**  
- **Adjustable Output Voltage** (via feedback resistors)  
- **Integrated MOSFET Drivers** (for external N-channel MOSFETs)  
- **Soft-Start Function** (prevents inrush current)  
- **Error Amplifier for Voltage Regulation**  
- **Low Power Consumption in Standby Mode**  

This information is based on the manufacturer's datasheet and technical documentation. For detailed electrical characteristics, refer to the official datasheet.

Application Scenarios & Design Considerations

Dual 5V Synchronous Buck Pulse-Width Modulator (PWM) Controller for DDRAM Memory VDDQ and VTT Termination
Partnumber Manufacturer Quantity Availability
ISL6531CB INTERSIL 1188 In Stock

Description and Introduction

Dual 5V Synchronous Buck Pulse-Width Modulator (PWM) Controller for DDRAM Memory VDDQ and VTT Termination The ISL6531CB is a power management 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:** ISL6531CB  
- **Type:** Dual PWM Controller  
- **Input Voltage Range:** 4.5V to 5.5V (VCC)  
- **Output Voltage Range:** Adjustable (depends on external components)  
- **Switching Frequency:** 200kHz to 1MHz (adjustable)  
- **Duty Cycle:** Up to 100%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 16-Lead SOIC (Small Outline Integrated Circuit)  

### **Descriptions:**
- The ISL6531CB is a dual PWM (Pulse Width Modulation) controller designed for synchronous buck converters.  
- It provides precise voltage regulation for two independent outputs, making it suitable for multi-rail power supply applications.  
- The IC includes integrated MOSFET drivers to reduce external component count.  

### **Features:**
- **Dual PWM Control:** Supports two independent synchronous buck converters.  
- **Adjustable Output Voltage:** Configurable via external resistors.  
- **Programmable Switching Frequency:** Allows optimization for efficiency and component size.  
- **Integrated MOSFET Drivers:** Reduces external circuitry.  
- **Overvoltage Protection (OVP):** Safeguards against excessive output voltage.  
- **Undervoltage Lockout (UVLO):** Ensures proper operation within voltage limits.  
- **Soft-Start Function:** Prevents inrush current during startup.  
- **Power-Good Indicator:** Monitors output status.  

For exact application details, refer to the official datasheet from Renesas Electronics (formerly INTERSIL).

Application Scenarios & Design Considerations

Dual 5V Synchronous Buck Pulse-Width Modulator (PWM) Controller for DDRAM Memory VDDQ and VTT Termination

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