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UC3845BD1R2G from ON,ON Semiconductor

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16.113ms

UC3845BD1R2G

Manufacturer: ON

HIGH PERFORMANCE CURRENT MODE CONTROLLERS

Partnumber Manufacturer Quantity Availability
UC3845BD1R2G ON 28852 In Stock

Description and Introduction

HIGH PERFORMANCE CURRENT MODE CONTROLLERS The UC3845BD1R2G is a high-performance current-mode PWM controller manufactured by ON Semiconductor. Below are the key specifications, descriptions, and features based on factual information from Ic-phoenix technical data files:  

### **Manufacturer:** ON Semiconductor  

### **Specifications:**  
- **Topology:** Current-mode PWM controller  
- **Input Voltage Range (VCC):** 8.5V to 30V  
- **Output Duty Cycle:** 0% to 50% (adjustable)  
- **Switching Frequency:** Up to 500kHz  
- **Output Drive Current:** ±200mA (peak)  
- **Reference Voltage:** 5V (±1% tolerance)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** SOIC-8  

### **Descriptions:**  
- The UC3845BD1R2G is designed for DC-DC converter applications, providing precise control in switching power supplies.  
- It features a trimmed oscillator for accurate duty cycle control and includes a high-gain error amplifier for stable feedback loop operation.  
- The device includes under-voltage lockout (UVLO) protection to ensure proper startup and shutdown.  

### **Features:**  
- **Current-Mode Operation:** Improves loop response and simplifies compensation.  
- **Adjustable Oscillator Frequency:** Allows flexibility in design.  
- **Cycle-by-Cycle Current Limiting:** Enhances system reliability.  
- **Soft-Start Capability:** Reduces inrush current during startup.  
- **Low Startup Current:** Typically 0.5mA.  
- **Latching PWM for Overvoltage Protection:** Prevents damage during fault conditions.  

For detailed electrical characteristics and application notes, refer to the official ON Semiconductor datasheet.

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