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ISL6520IB from INTER

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ISL6520IB

Manufacturer: INTER, INTERSIL

Single Synchronous Buck Pulse-Width Modulation (PWM) Controller

Partnumber Manufacturer Quantity Availability
ISL6520IB INTER, INTERSIL 382 In Stock

Description and Introduction

Single Synchronous Buck Pulse-Width Modulation (PWM) Controller The ISL6520IB is a power management IC manufactured by Intersil (now part of Renesas Electronics). Below are the factual specifications, descriptions, and features of the ISL6520IB:

### **Specifications:**
- **Manufacturer:** Intersil (Renesas Electronics)  
- **Part Number:** ISL6520IB  
- **Package:** 8-Lead SOIC (Small Outline Integrated Circuit)  
- **Input Voltage Range:** 4.5V to 5.5V  
- **Output Voltage Range:** Adjustable (via external resistors)  
- **Switching Frequency:** 300kHz (typical)  
- **Output Current:** Up to 2A (with external MOSFETs)  
- **Efficiency:** Up to 90%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Control Method:** Voltage Mode PWM (Pulse-Width Modulation)  

### **Descriptions:**
The ISL6520IB is a synchronous buck PWM controller designed for high-efficiency DC-DC voltage regulation. It is commonly used in power supply applications for motherboards, graphics cards, and other computing systems. The IC integrates control logic, drivers, and protection features to manage external MOSFETs for efficient power conversion.

### **Features:**
- **Integrated MOSFET Drivers:** Reduces external component count.  
- **Adjustable Output Voltage:** Configured via external resistors.  
- **Soft-Start Function:** Prevents inrush current at startup.  
- **Overcurrent Protection (OCP):** Safeguards against excessive load currents.  
- **Undervoltage Lockout (UVLO):** Ensures proper operation within voltage limits.  
- **Power-Good (PG) Output:** Monitors output voltage status.  
- **Thermal Shutdown:** Protects against overheating.  
- **Synchronous Rectification:** Improves efficiency by reducing power loss.  

This information is based on the manufacturer's datasheet and technical documentation. For detailed application notes, refer to the official datasheet from Renesas Electronics.

Application Scenarios & Design Considerations

Single Synchronous Buck Pulse-Width Modulation (PWM) Controller

Alternative Part Number

  • TL5001CD --: Single-ended PWM controller with similar voltage-mode control function and 8-pin SOIC package, widely available and pin-function compatible for many buck/boost designs.
  • UC3842BD1 --: Industry-standard current-mode PWM controller in SO-8, commonly used as a substitute in low-power DC-DC converters where the ISL6520 was applied.
  • SG3524BD --: General-purpose PWM controller in SOIC-16 offering comparable regulation and drive capability, suitable for designs needing a flexible alternate controller.

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