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UC2841N from TI,Texas Instruments

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UC2841N

Manufacturer: TI

Programmable, Off-Line, PWM Controller

Partnumber Manufacturer Quantity Availability
UC2841N TI 1066 In Stock

Description and Introduction

Programmable, Off-Line, PWM Controller The **UC2841N** is a current-mode PWM controller manufactured by **Texas Instruments (TI)**. Below are its key specifications, descriptions, and features:

### **Specifications:**  
- **Topology**: Current-mode PWM controller  
- **Operating Frequency**: Up to 500 kHz  
- **Input Voltage Range**: 8V to 30V (start-up voltage ~16V)  
- **Output Drive Current**: ±1A (peak)  
- **Duty Cycle Range**: 0% to 100%  
- **Reference Voltage**: 5V (±1% accuracy)  
- **Operating Temperature Range**: -40°C to +85°C  
- **Package**: 8-Pin PDIP (Plastic Dual In-line Package)  

### **Descriptions:**  
- Designed for **offline and DC-DC converter** applications.  
- Provides **precise duty cycle control** with current-mode operation.  
- Features **undervoltage lockout (UVLO)** with hysteresis.  
- Includes **soft-start capability** for controlled startup.  

### **Features:**  
- **Current-mode control** for improved transient response.  
- **Programmable oscillator** for frequency adjustment.  
- **Error amplifier** with **wide bandwidth**.  
- **Latching PWM** for cycle-by-cycle current limiting.  
- **Low startup and operating current**.  
- **Totem-pole output** for direct MOSFET driving.  

This IC is commonly used in **switching power supplies, battery chargers, and industrial power systems**.  

(Source: Texas Instruments Datasheet for UC2841N)

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