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ISL6844IU from N/A

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ISL6844IU

Manufacturer: N/A, INTERSIL

Improved Industry Standard Single Ended Current Mode PWM Controller

Partnumber Manufacturer Quantity Availability
ISL6844IU N/A, INTERSIL 547 In Stock

Description and Introduction

Improved Industry Standard Single Ended Current Mode PWM Controller The ISL6844IU is a dual synchronous buck PWM controller manufactured by INTERSIL (now part of Renesas Electronics). Below are its key specifications, descriptions, and features based on factual information:

### **Specifications:**  
- **Input Voltage Range:** 4.5V to 25V  
- **Output Voltage Range:** Adjustable down to 0.6V  
- **Switching Frequency:** 300kHz to 1MHz (adjustable)  
- **Duty Cycle Range:** 0% to 100%  
- **Output Current:** Supports high-current applications (external MOSFETs required)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 16-Lead QFN (Quad Flat No-Lead)  

### **Descriptions:**  
- The ISL6844IU is a dual-phase, synchronous buck PWM controller designed for high-efficiency DC/DC voltage regulation.  
- It provides precise voltage regulation for applications such as servers, telecom, and industrial power supplies.  
- The device supports adjustable switching frequency and phase-shifted operation to reduce input ripple current.  

### **Features:**  
- **Dual-Phase Operation:** Reduces input/output capacitor requirements.  
- **Adjustable Switching Frequency:** 300kHz to 1MHz for design flexibility.  
- **Precision Reference Voltage:** 0.6V ±1% accuracy.  
- **Programmable Soft-Start:** Reduces inrush current.  
- **Overcurrent Protection (OCP):** Uses MOSFET RDS(ON) sensing.  
- **Overvoltage Protection (OVP):** Monitors output voltage.  
- **Undervoltage Lockout (UVLO):** Ensures proper startup.  
- **Synchronous Rectification:** Improves efficiency.  
- **Power-Good Indicator:** Monitors output status.  

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

Application Scenarios & Design Considerations

Improved Industry Standard Single Ended Current Mode PWM Controller

Alternative Part Number

  • UC3844AN --: Industry-standard current-mode PWM controller with nearly identical function and pinout, widely available and well documented.
  • SG3844N --: Direct functional equivalent current-mode PWM controller from a different series, suitable drop-in for many designs.
  • TL3844P --: Low-cost current-mode PWM controller with similar electrical characteristics, good second-source option.

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