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UC1846J

Current Mode PWM Controller

Partnumber Manufacturer Quantity Availability
UC1846J 755 In Stock

Description and Introduction

Current Mode PWM Controller The UC1846J is a high-performance current-mode PWM controller manufactured by Texas Instruments.  

### **Specifications:**  
- **Topology:** Current-mode PWM control  
- **Operating Frequency:** Up to 500 kHz  
- **Supply Voltage (VCC):** 8V to 40V  
- **Output Current (Peak):** 500 mA (sink/source)  
- **Duty Cycle Range:** 0% to 100%  
- **Error Amplifier Bandwidth:** 3 MHz  
- **Soft-Start Capability:** Yes  
- **Shutdown Feature:** Yes  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 16-pin DIP (PDIP)  

### **Descriptions:**  
The UC1846J is designed for high-efficiency power supply applications, providing precise current-mode control for switching regulators. It features an onboard error amplifier, current sensing comparator, and a programmable oscillator. The device is widely used in DC-DC converters, offline power supplies, and motor control circuits.  

### **Features:**  
- **Current-Mode Operation:** Enhances loop response and simplifies compensation.  
- **Programmable Oscillator:** Allows flexible frequency adjustment.  
- **Error Amplifier:** High-gain bandwidth for accurate voltage regulation.  
- **Soft-Start:** Prevents excessive inrush current during startup.  
- **Shutdown Pin:** Provides a quick disable function.  
- **Under-Voltage Lockout (UVLO):** Ensures proper operation within safe voltage limits.  
- **Dual Output Drivers:** Capable of driving power MOSFETs or IGBTs directly.  

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

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