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UC2845BN from UC

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UC2845BN

Manufacturer: UC

High performance current mode controller

Partnumber Manufacturer Quantity Availability
UC2845BN UC 38 In Stock

Description and Introduction

High performance current mode controller The UC2845BN is a high-performance current-mode PWM controller manufactured by Texas Instruments. Below are the key specifications, descriptions, and features:

### **Manufacturer:**  
- **Texas Instruments**  

### **Specifications:**  
- **Topology:** Current-mode PWM controller  
- **Operating Frequency:** Up to 500 kHz  
- **Input Voltage Range:** 8V to 30V (with UVLO thresholds at 8.4V on, 7.6V off)  
- **Output Duty Cycle:** 0% to 100%  
- **Peak Output Current:** ±1A (source/sink)  
- **Reference Voltage:** 5V (±1% accuracy)  
- **Error Amplifier Bandwidth:** 1 MHz  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 8-Pin PDIP (Plastic Dual In-Line Package)  

### **Descriptions:**  
- The UC2845BN is designed for offline and DC-DC converter applications.  
- It provides precise duty cycle control with current-mode operation for improved loop response.  
- Includes built-in protections such as under-voltage lockout (UVLO), cycle-by-cycle current limiting, and soft-start capability.  

### **Features:**  
- **Current-Mode Control:** Enhances transient response and simplifies loop compensation.  
- **Automatic Feed-Forward Compensation:** Improves line regulation.  
- **Trimmed Oscillator Discharge Current:** Ensures consistent frequency control.  
- **Latching PWM for Cycle-by-Cycle Current Limiting:** Prevents output overload.  
- **Soft-Start Function:** Reduces inrush current at startup.  
- **Low Startup Current (≤ 1mA):** Minimizes power consumption during startup.  

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

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