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UCC3805N from TI,Texas Instruments

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UCC3805N

Manufacturer: TI

Low-Power BiCMOS Current-Mode PWM

Partnumber Manufacturer Quantity Availability
UCC3805N TI 1000 In Stock

Description and Introduction

Low-Power BiCMOS Current-Mode PWM The UCC3805N is a PWM controller manufactured by Texas Instruments (TI). Below are the specifications, descriptions, and features based on Ic-phoenix technical data files:

### **Specifications:**  
- **Manufacturer:** Texas Instruments (TI)  
- **Category:** Integrated Circuits (ICs)  
- **Subcategory:** PMIC - Voltage Regulators - DC DC Switching Controllers  
- **Output Type:** Transistor Driver  
- **Function:** Step-Up, Step-Up/Step-Down  
- **Topology:** Boost, Flyback  
- **Number of Outputs:** 1  
- **Output Phases:** 1  
- **Voltage - Supply (Vcc/Vdd):** 10V ~ 20V  
- **Frequency - Switching:** Up to 1MHz  
- **Duty Cycle (Max):** 100%  
- **Synchronous Rectifier:** No  
- **Clock Sync:** No  
- **Operating Temperature:** -40°C ~ 85°C  
- **Package/Case:** 8-DIP (0.300", 7.62mm)  

### **Descriptions:**  
The UCC3805N is a high-performance current-mode PWM controller designed for offline and DC-DC converter applications. It provides precise regulation and fast transient response, making it suitable for power supply designs. The device includes features like soft-start, undervoltage lockout (UVLO), and cycle-by-cycle current limiting for enhanced reliability.  

### **Features:**  
- **Current-Mode Control:** Ensures cycle-by-cycle current limiting for improved reliability.  
- **Programmable Oscillator:** Allows flexible frequency setting via external components.  
- **Soft-Start Function:** Reduces inrush current during startup.  
- **Undervoltage Lockout (UVLO):** Ensures proper operation within specified voltage ranges.  
- **High-Current Totem-Pole Output:** Capable of driving power MOSFETs directly.  
- **Low Startup Current:** Minimizes power consumption during startup.  
- **Wide Operating Voltage Range:** Supports 10V to 20V supply voltage.  

This information is based on the manufacturer's datasheet and product documentation. For detailed application notes, refer to TI's official resources.

Application Scenarios & Design Considerations

Low-Power BiCMOS Current-Mode PWM
Partnumber Manufacturer Quantity Availability
UCC3805N UNITRODE 8 In Stock

Description and Introduction

Low-Power BiCMOS Current-Mode PWM The UCC3805N is a high-performance current-mode PWM controller manufactured by UNITRODE. Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:

### **Specifications:**  
- **Input Voltage Range (VCC):** 8.5V to 12V (operating), with an absolute maximum of 15V.  
- **Output Drive Current:** ±1A peak.  
- **Switching Frequency Range:** Up to 1MHz.  
- **Duty Cycle Range:** 0% to 100%.  
- **Operating Temperature Range:** -40°C to +85°C.  
- **Package:** 8-Pin DIP (Dual Inline Package).  

### **Descriptions:**  
- The UCC3805N is a current-mode PWM controller designed for high-frequency switching power supplies.  
- It includes an integrated oscillator, error amplifier, current sensing comparator, and a totem-pole output stage for driving power MOSFETs.  
- Optimized for offline and DC-DC converter applications.  

### **Features:**  
- **Current-Mode Control:** Provides cycle-by-cycle current limiting and improved transient response.  
- **Programmable Oscillator:** Allows external adjustment of switching frequency.  
- **Under-Voltage Lockout (UVLO):** Ensures proper operation only when VCC is within the valid range.  
- **Soft-Start Capability:** Reduces inrush current during startup.  
- **High Noise Immunity:** Robust design minimizes false triggering.  
- **Low Startup Current:** Typically 0.5mA, reducing power dissipation.  

For detailed application notes, refer to the UNITRODE datasheet.

Application Scenarios & Design Considerations

Low-Power BiCMOS Current-Mode PWM

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