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UCC3805 from UNITRODE

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UCC3805

Manufacturer: UNITRODE

Low-Power BiCMOS Current-Mode PWM

Partnumber Manufacturer Quantity Availability
UCC3805 UNITRODE 550 In Stock

Description and Introduction

Low-Power BiCMOS Current-Mode PWM The UCC3805 is a high-performance current-mode PWM controller manufactured by UNITRODE.  

### **Specifications:**  
- **Input Voltage Range:** 10V to 18V (operating), 8.4V (UVLO turn-off threshold)  
- **Output Drive Current:** ±1A peak  
- **Switching Frequency:** Up to 1MHz  
- **Duty Cycle Range:** 0% to 100%  
- **Error Amplifier Bandwidth:** 5MHz  
- **Current Sense Comparator Delay:** 50ns  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package Options:** 8-Pin DIP, SOIC  

### **Descriptions:**  
The UCC3805 is designed for high-frequency, current-mode power supply applications. It features a fast error amplifier, precise current sensing, and a high-current totem-pole output driver suitable for driving power MOSFETs.  

### **Features:**  
- **Current-Mode Control:** Enhances loop response and simplifies compensation.  
- **Programmable Soft-Start:** Reduces inrush current during startup.  
- **Under-Voltage Lockout (UVLO):** Ensures proper operation within voltage limits.  
- **Cycle-by-Cycle Current Limiting:** Protects against overloads.  
- **Internal Leading-Edge Blanking:** Improves noise immunity in current sensing.  
- **Low Startup Current:** Typically 150µA for reduced standby power.  

This information is based on UNITRODE's official documentation for the UCC3805.

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