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ISL6843IB from INTERISL

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ISL6843IB

Manufacturer: INTERISL

Improved Industry Standard Single Ended Current Mode PWM Controller

Partnumber Manufacturer Quantity Availability
ISL6843IB INTERISL 8 In Stock

Description and Introduction

Improved Industry Standard Single Ended Current Mode PWM Controller The ISL6843IB is a manufacturer part from INTERSIL (now part of Renesas Electronics). Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:

### **Specifications:**
- **Manufacturer:** INTERSIL (Renesas Electronics)  
- **Part Number:** ISL6843IB  
- **Type:** Synchronous Buck PWM Controller  
- **Input Voltage Range:** 4.5V to 25V  
- **Output Voltage Range:** Adjustable (0.8V to 5.5V)  
- **Switching Frequency:** 300kHz to 1MHz (adjustable)  
- **Maximum Duty Cycle:** 95%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 8-Lead SOIC  

### **Descriptions:**
The ISL6843IB is a high-performance synchronous buck PWM controller designed for DC-DC voltage regulation applications. It provides precise control for step-down converters with high efficiency and low power dissipation. The device supports adjustable output voltage and switching frequency, making it suitable for various power supply designs.

### **Features:**
- **Wide Input Voltage Range (4.5V to 25V)**  
- **Adjustable Output Voltage (0.8V to 5.5V)**  
- **Programmable Switching Frequency (300kHz to 1MHz)**  
- **High Efficiency Synchronous Operation**  
- **Integrated MOSFET Drivers**  
- **Overcurrent Protection (OCP)**  
- **Undervoltage Lockout (UVLO)**  
- **Thermal Shutdown Protection**  
- **Soft-Start Functionality**  
- **Lead-Free and RoHS Compliant**  

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

Partnumber Manufacturer Quantity Availability
ISL6843IB INTERSIL 4680 In Stock

Description and Introduction

Improved Industry Standard Single Ended Current Mode PWM Controller The ISL6843IB is a high-performance 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 14V  
- **Output Voltage Range:** Adjustable down to 0.6V  
- **Switching Frequency:** Adjustable from 100kHz to 1MHz  
- **Maximum Duty Cycle:** Up to 100%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 16-Lead QFN (Quad Flat No-Lead)  

### **Descriptions:**  
- Designed for high-efficiency synchronous buck DC/DC converters.  
- Supports both voltage-mode and current-mode control.  
- Features adaptive dead-time control to improve efficiency.  
- Includes integrated MOSFET drivers for N-channel power MOSFETs.  

### **Features:**  
- **Precision Reference Voltage:** 0.6V ±1%  
- **Programmable Soft-Start**  
- **Overcurrent Protection (OCP)**  
- **Overvoltage Protection (OVP)**  
- **Undervoltage Lockout (UVLO)**  
- **Synchronizable to External Clock**  
- **Low Quiescent Current:** Typically 2.5mA  

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

(Note: Always refer to the latest datasheet for updated specifications.)

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