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ISL6721AVZ from INTERSIL

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ISL6721AVZ

Manufacturer: INTERSIL

Flexible Single Ended Current Mode PWM Controller

Partnumber Manufacturer Quantity Availability
ISL6721AVZ INTERSIL 95 In Stock

Description and Introduction

Flexible Single Ended Current Mode PWM Controller The ISL6721AVZ is a single-ended PWM controller manufactured by Intersil (now part of Renesas Electronics). Below are its key specifications, descriptions, and features based on available data:  

### **Specifications:**  
- **Input Voltage Range:** 8V to 14V (VCC)  
- **Operating Frequency Range:** 50kHz to 1MHz  
- **Duty Cycle Range:** Up to 90%  
- **Output Drive Current:** ±1.5A (peak)  
- **Soft-Start Time:** Adjustable  
- **Protection Features:** Overcurrent protection (OCP), undervoltage lockout (UVLO)  
- **Package:** 8-lead SOIC  

### **Descriptions:**  
- Designed for DC-DC converter applications.  
- Provides voltage-mode control with adjustable frequency.  
- Includes an integrated high-current MOSFET driver.  
- Suitable for forward, flyback, and boost converter topologies.  

### **Features:**  
- **Voltage-Mode Control:** Ensures stable regulation.  
- **Adjustable Oscillator Frequency:** Set via external resistor/capacitor.  
- **Synchronization Capability:** Can sync to an external clock.  
- **Programmable Soft-Start:** Reduces inrush current.  
- **Error Amplifier:** Supports feedback loop compensation.  
- **Low Startup Current:** Typically 150µA.  

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

Application Scenarios & Design Considerations

Flexible Single Ended Current Mode PWM Controller

Alternative Part Number

  • UCC2813D-1 --: Industry-standard current-mode PWM controller in the same functional class as the ISL6721, widely available and well documented as a drop-in style replacement for single-ended flyback/forward designs.
  • UC3843AN --: Classic current-mode PWM controller with very similar control architecture and pin function, commonly used as a substitute in low-power offline converters when design margins are verified.
  • NCP1200P60 --: Integrated current-mode PWM controller for offline flyback supplies, offering comparable control behavior and a compact alternative when the ISL6721's specific features are not all required.

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