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UCC2889N from UNITRODE

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UCC2889N

Manufacturer: UNITRODE

Off-line Power Supply Controller

Partnumber Manufacturer Quantity Availability
UCC2889N UNITRODE 28 In Stock

Description and Introduction

Off-line Power Supply Controller The UCC2889N is a power management IC manufactured by UNITRODE. Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:  

### **Specifications:**  
- **Manufacturer:** UNITRODE  
- **Type:** Off-Line PWM Controller  
- **Package:** PDIP-8 (Plastic Dual In-Line Package)  
- **Input Voltage Range:** 8V to 35V  
- **Operating Frequency:** Adjustable (typically up to 250 kHz)  
- **Output Drive Current:** Up to 1A (Peak)  
- **Duty Cycle Range:** Up to 50%  
- **Start-Up Current:** Low (typically 0.5 mA)  
- **Operating Temperature Range:** -40°C to +85°C  

### **Descriptions:**  
The UCC2889N is a high-performance, low-power offline PWM controller designed for flyback and forward converter applications. It integrates a high-voltage startup regulator, precision reference, oscillator, PWM comparator, and output driver. It is optimized for low standby power consumption and is suitable for AC/DC power supplies.  

### **Features:**  
- **Integrated High-Voltage Startup Circuit** – Eliminates the need for an external startup resistor.  
- **Low Standby Power Consumption** – Ideal for energy-efficient designs.  
- **Programmable Oscillator Frequency** – Allows flexibility in design.  
- **Current-Mode Control** – Provides improved transient response and simplified loop compensation.  
- **Under-Voltage Lockout (UVLO)** – Ensures reliable operation under low input voltage conditions.  
- **Soft-Start Function** – Reduces inrush current during startup.  
- **Overcurrent Protection** – Enhances system reliability.  

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

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