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UCC3801 from TI,Texas Instruments

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UCC3801

Manufacturer: TI

Low-Power BiCMOS Current-Mode PWM

Partnumber Manufacturer Quantity Availability
UCC3801 TI 463 In Stock

Description and Introduction

Low-Power BiCMOS Current-Mode PWM The UCC3801 is a low-power BiCMOS current-mode PWM controller manufactured by Texas Instruments (TI). Below are its key specifications, descriptions, and features:

### **Specifications:**  
- **Input Voltage Range:** 4.5V to 12V  
- **Operating Frequency:** Up to 1MHz  
- **Output Drive Current:** 500mA (peak)  
- **Start-Up Current:** 150µA (typical)  
- **Quiescent Current:** 2mA (typical)  
- **Duty Cycle Range:** 0% to 100%  
- **Error Amplifier Bandwidth:** 5MHz  
- **Operating Temperature Range:** -40°C to +85°C  

### **Descriptions:**  
- The UCC3801 is designed for low-power, high-frequency DC-DC converter applications.  
- It features a current-mode control architecture for improved transient response and simplified loop compensation.  
- The device includes an internal oscillator, error amplifier, PWM comparator, and totem-pole output driver.  

### **Features:**  
- **Current-Mode Control:** Enhances loop stability and transient response.  
- **Low Start-Up and Operating Current:** Improves efficiency in low-power applications.  
- **Wide Input Voltage Range:** Supports operation from 4.5V to 12V.  
- **High-Frequency Operation:** Suitable for compact power supply designs.  
- **Internal Soft Start:** Reduces inrush current during startup.  
- **Under-Voltage Lockout (UVLO):** Ensures reliable operation under low input voltage conditions.  
- **Totem-Pole Output:** Directly drives power MOSFETs with 500mA peak current.  

The UCC3801 is commonly used in offline and isolated power supplies, battery chargers, and auxiliary power modules.

Application Scenarios & Design Considerations

Low-Power BiCMOS Current-Mode PWM

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