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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 1190 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

Alternative Part Number

  • HIP6301CB --: Same vendor multi-phase PWM controller family with comparable functionality and package, often used as a drop-in substitute in VRM designs.
  • NCP5314DR2G --: Multi-phase buck controller with similar feature set and SOIC package, suitable functional replacement with different naming series.
  • ADP3166JRUZ --: Multi-phase synchronous buck controller offering comparable control functions, usable as an alternative with design verification.
  • LM2636M --: Single-phase synchronous buck controller with similar voltage-mode control and SOIC package, suitable functional replacement.
  • NCP5314DR2 --: Multi-phase buck controller offering comparable regulation features and pin-compatible SOIC footprint for power supply applications.

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