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UC3845AD8TRG4 from TI,Texas Instruments

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15.625ms

UC3845AD8TRG4

Manufacturer: TI

Current Mode PWM Controller 8-SOIC 0 to 70

Partnumber Manufacturer Quantity Availability
UC3845AD8TRG4 TI 5000 In Stock

Description and Introduction

Current Mode PWM Controller 8-SOIC 0 to 70 The **UC3845AD8TRG4** is a high-performance current-mode PWM controller manufactured by **Texas Instruments (TI)**.  

### **Specifications:**  
- **Topology**: Current-mode PWM controller  
- **Input Voltage (VCC)**: 8.5V to 30V  
- **Output Frequency**: Up to 500kHz  
- **Duty Cycle**: 0% to 100% (adjustable)  
- **Output Current (Peak)**: 1A (source/sink)  
- **Operating Temperature Range**: -40°C to +85°C  
- **Package**: SOIC-8  

### **Descriptions:**  
The UC3845AD8TRG4 is designed for DC-DC converter and offline power supply applications. It features precise duty cycle control, cycle-by-cycle current limiting, and under-voltage lockout (UVLO) protection.  

### **Features:**  
- **Current-Mode Operation** for improved transient response  
- **Adjustable Oscillator Frequency** with external components  
- **Under-Voltage Lockout (UVLO)** with hysteresis  
- **Internal Trimmed Bandgap Reference** (5V ±1%)  
- **High-Current Totem Pole Output** for driving MOSFETs  
- **Low Start-Up Current** (<1mA)  
- **Cycle-by-Cycle Current Limiting**  

This device is commonly used in **switching power supplies, battery chargers, and LED drivers**.  

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