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UC2845D from UNI

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UC2845D

Manufacturer: UNI

HIGH PERFORMANCE CURRENT MODE CONTROLLERS

Partnumber Manufacturer Quantity Availability
UC2845D UNI 16 In Stock

Description and Introduction

HIGH PERFORMANCE CURRENT MODE CONTROLLERS The UC2845D is a high-performance current-mode PWM controller manufactured by Texas Instruments (UNI).  

### **Specifications:**  
- **Topology:** Current-mode PWM control  
- **Operating Frequency:** Up to 500 kHz  
- **Output Drive Current:** ±1 A (peak)  
- **Input Voltage Range:** 8.5V to 30V  
- **Under-Voltage Lockout (UVLO):** 7.9V (turn-on), 7.5V (turn-off)  
- **Duty Cycle Range:** 0% to 100%  
- **Error Amplifier Bandwidth:** 1 MHz  
- **Package:** SOIC-8  

### **Descriptions:**  
- The UC2845D is designed for offline and DC-DC converter applications.  
- It features an automatic feed-forward compensation, cycle-by-cycle current limiting, and a trimmed oscillator for precise duty cycle control.  
- The device includes a temperature-compensated reference, high-gain error amplifier, and a current-sensing comparator.  

### **Features:**  
- **Current-Mode Operation:** Provides inherent line regulation and simplified loop compensation.  
- **Low Start-Up Current:** Typically 0.5 mA.  
- **Pulse-by-Pulse Current Limiting:** Enhances system reliability.  
- **Internal Soft-Start:** Reduces inrush current during startup.  
- **Latching PWM:** Ensures single-pulse operation per cycle.  
- **High-Current Totem Pole Output:** Optimized for driving power MOSFETs.  

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

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