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ISL6843IUZ from Intersil

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ISL6843IUZ

Manufacturer: Intersil

Improved industry standard single-ended current mode PWM controller.

Partnumber Manufacturer Quantity Availability
ISL6843IUZ Intersil 4940 In Stock

Description and Introduction

Improved industry standard single-ended current mode PWM controller. The **ISL6843IUZ** is a **PWM controller IC** manufactured by **Intersil** (now part of Renesas Electronics). Below are its key specifications, descriptions, and features based on available data:  

### **Specifications:**  
- **Manufacturer:** Intersil (Renesas Electronics)  
- **Type:** Current Mode PWM Controller  
- **Topology:** Supports Buck, Boost, Flyback, and Forward Converters  
- **Input Voltage Range:** 4.5V to 5.5V (VCC)  
- **Switching Frequency:** Adjustable up to **1MHz**  
- **Duty Cycle Range:** 0% to 100%  
- **Output Drive Current:** Up to **1A** (Peak)  
- **Operating Temperature Range:** **-40°C to +85°C**  
- **Package:** **10-Lead MSOP (Mini Small Outline Package)**  
- **Protection Features:**  
  - Undervoltage Lockout (UVLO)  
  - Overcurrent Protection  
  - Soft-Start Function  

### **Descriptions & Features:**  
- **Current Mode Control:** Provides improved transient response and simplified loop compensation.  
- **Adjustable Frequency:** Allows optimization for efficiency and component size.  
- **Synchronization Capability:** Can be synchronized to an external clock.  
- **Low Startup Current:** Ensures efficient operation at startup.  
- **High-Speed PWM Operation:** Suitable for high-frequency DC-DC converters.  
- **Integrated Error Amplifier:** Simplifies feedback loop design.  
- **Soft-Start Function:** Reduces inrush current during startup.  

This IC is commonly used in **power supply applications**, including **DC-DC converters, telecom power systems, and industrial power modules**.  

Would you like additional details on a specific aspect?

Partnumber Manufacturer Quantity Availability
ISL6843IUZ INTERSIL 231 In Stock

Description and Introduction

Improved industry standard single-ended current mode PWM controller. The ISL6843IUZ is a synchronous buck PWM controller manufactured by INTERSIL (now part of Renesas Electronics). Below are its key specifications, descriptions, and features:

### **Specifications:**
- **Input Voltage Range:** 4.5V to 25V  
- **Output Voltage Range:** Adjustable down to 0.8V  
- **Switching Frequency:** 100kHz to 1MHz (adjustable)  
- **Duty Cycle Range:** 0% to 100%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 10-Lead MSOP  

### **Descriptions:**
- Designed for high-efficiency DC-DC buck converters.  
- Supports synchronous rectification for improved efficiency.  
- Features voltage-mode control with adjustable soft-start.  
- Includes overcurrent protection (OCP) and undervoltage lockout (UVLO).  

### **Features:**
- **Adjustable Frequency:** Allows optimization for efficiency and component size.  
- **Precision Reference:** 0.8V ±1% accuracy.  
- **Synchronous Operation:** Reduces power loss compared to diode-based designs.  
- **Soft-Start Control:** Prevents inrush current at startup.  
- **Power Good Indicator:** Monitors output voltage status.  
- **Overcurrent Protection:** Shuts down in case of excessive current.  
- **Undervoltage Lockout (UVLO):** Ensures proper operation under low input voltage.  

This controller is commonly used in point-of-load (POL) converters, telecom, and industrial applications.

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