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UC3845AD1 from STM,ST Microelectronics

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15.015ms

UC3845AD1

Manufacturer: STM

HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER

Partnumber Manufacturer Quantity Availability
UC3845AD1 STM 407 In Stock

Description and Introduction

HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER The UC3845AD1 is a current-mode PWM controller manufactured by STMicroelectronics (STM).  

### **Specifications:**  
- **Topology:** Current-mode PWM controller  
- **Input Voltage (VCC):** 8.5V to 30V  
- **Output Drive Current:** ±1A (peak)  
- **Switching Frequency:** Up to 500kHz  
- **Duty Cycle Range:** 0% to 100%  
- **Reference Voltage:** 5V (±1% tolerance)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** SOIC-8  

### **Descriptions:**  
The UC3845AD1 is designed for DC-DC converter applications, providing precise control for power supplies. It features an oscillator, error amplifier, current sensing comparator, and a totem-pole output stage.  

### **Features:**  
- Adjustable frequency with external components  
- Under-voltage lockout (UVLO) with hysteresis  
- Current limiting and cycle-by-cycle current sensing  
- Latching PWM for single-pulse metering  
- Low startup and operating current  

This IC is commonly used in flyback, forward, and boost converter designs.  

(Source: STMicroelectronics datasheet for UC3845AD1)

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