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UC3842BD1013TR from STM,ST Microelectronics

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UC3842BD1013TR

Manufacturer: STM

HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER

Partnumber Manufacturer Quantity Availability
UC3842BD1013TR STM 2347 In Stock

Description and Introduction

HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER The UC3842BD1013TR is a current-mode PWM controller manufactured by STMicroelectronics (STM). Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:

### **Specifications:**  
- **Manufacturer:** STMicroelectronics (STM)  
- **Part Number:** UC3842BD1013TR  
- **Type:** Current-Mode PWM Controller  
- **Package:** SOIC-8  
- **Operating Temperature Range:** -40°C to +85°C  
- **Input Voltage (VCC):** Up to 30V  
- **Output Voltage:** Adjustable (depends on external components)  
- **Switching Frequency:** Up to 500kHz  
- **Duty Cycle:** 0% to 100%  
- **Output Current (Source/Sink):** 1A (peak)  
- **UVLO (Under-Voltage Lockout):** 16V (on) / 10V (off)  
- **Reference Voltage:** 5V (precision internal reference)  

### **Descriptions:**  
The UC3842BD1013TR is a high-performance fixed-frequency current-mode PWM controller designed for DC-DC converter and offline power supply applications. It provides precise control of switching power supplies with minimal external components. The device includes an oscillator, a temperature-compensated reference, high-gain error amplifier, current sensing comparator, and a totem-pole output stage.  

### **Features:**  
- **Current-Mode Operation:** Provides inherent line feedforward, cycle-by-cycle current limiting, and simplified feedback loop compensation.  
- **Automatic Feedforward Compensation:** Ensures consistent response over varying input voltages.  
- **Trimmed Oscillator:** For precise frequency control.  
- **High-Current Totem-Pole Output:** Directly drives power MOSFETs.  
- **Low Start-Up Current:** Typically 0.5mA.  
- **Pulse-by-Pulse Current Limiting:** Enhances system reliability.  
- **Undervoltage Lockout (UVLO):** Ensures proper operation under low-voltage conditions.  
- **Internal Reference Voltage:** 5V with ±1% tolerance.  

This information is based on the manufacturer's datasheet and technical documentation.

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