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ISL6741IB from INTERSIL

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ISL6741IB

Manufacturer: INTERSIL, NS

Flexible Double Ended Voltage and Current Mode PWM Controllers

Partnumber Manufacturer Quantity Availability
ISL6741IB INTERSIL, NS 1125 In Stock

Description and Introduction

Flexible Double Ended Voltage and Current Mode PWM Controllers The ISL6741IB is a high-performance PWM controller manufactured by Intersil (now part of Renesas Electronics). Below are the factual details about its specifications, descriptions, and features:

### **Specifications:**  
- **Input Voltage Range:** 4.5V to 15V  
- **Operating Frequency Range:** Up to 1MHz  
- **Duty Cycle Range:** 0% to 100%  
- **Output Drive Current:** ±2A (peak)  
- **Propagation Delay:** 50ns (typical)  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package Type:** 16-Lead SOIC  

### **Descriptions:**  
The ISL6741IB is a voltage-mode PWM controller designed for high-efficiency power supply applications. It provides precise control over switching power converters with features like adjustable dead-time control, soft-start, and cycle-by-cycle current limiting. It is commonly used in DC-DC converters, telecom power supplies, and industrial power systems.  

### **Features:**  
- **Voltage-Mode Control:** Ensures stable operation in power supply designs.  
- **Adjustable Dead-Time Control:** Optimizes efficiency by minimizing shoot-through.  
- **Soft-Start Function:** Prevents inrush current during startup.  
- **Cycle-by-Cycle Current Limiting:** Protects against overcurrent conditions.  
- **Synchronizable Oscillator:** Allows synchronization to an external clock.  
- **Under-Voltage Lockout (UVLO):** Ensures proper operation within voltage range.  
- **High-Speed Error Amplifier:** Enhances transient response.  

This information is based on the manufacturer's datasheet and technical documentation.

Application Scenarios & Design Considerations

Flexible Double Ended Voltage and Current Mode PWM Controllers

Alternative Part Number

  • UC3846N --: Industry-standard current-mode PWM controller with similar control-loop functionality, widely available and easy to source as a functional substitute.
  • SG3525AN --: Voltage-mode PWM controller offering comparable oscillator and output-drive features, commonly used in similar power-supply designs.
  • TL494CN --: Versatile dual-output PWM controller with broad availability and well-documented behavior, suitable for evaluation as a replacement in non-critical designs.

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