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UC2842BD1 from ST,ST Microelectronics

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15.625ms

UC2842BD1

Manufacturer: ST

High Performance Current Mode Controller

Partnumber Manufacturer Quantity Availability
UC2842BD1 ST 17500 In Stock

Description and Introduction

High Performance Current Mode Controller The UC2842BD1 is a current-mode PWM controller manufactured by STMicroelectronics.  

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

### **Descriptions:**  
The UC2842BD1 is designed for high-performance offline and DC-DC power supplies. It features a trimmed oscillator for precise duty cycle control, current sensing, and a high-gain error amplifier. It includes under-voltage lockout (UVLO) with hysteresis for reliable startup.  

### **Features:**  
- **Current-Mode Operation:** Provides cycle-by-cycle current limiting.  
- **Under-Voltage Lockout (UVLO):** Ensures proper startup and shutdown.  
- **Trimmed Oscillator:** Allows accurate frequency control.  
- **High-Current Totem Pole Output:** Suitable for driving power MOSFETs.  
- **Soft-Start Capability:** Reduces inrush current.  
- **Low Startup Current:** Typically <1mA.  
- **Pulse-by-Pulse Current Limiting:** Enhances system protection.  

This IC is commonly used in switch-mode power supplies (SMPS), battery chargers, and DC-DC converters.

Partnumber Manufacturer Quantity Availability
UC2842BD1 100 In Stock

Description and Introduction

High Performance Current Mode Controller The UC2842BD1 is a high-performance current-mode PWM controller manufactured by Texas Instruments.  

### **Specifications:**  
- **Input Voltage Range:** 8.5V to 30V  
- **Operating Frequency:** Up to 500 kHz  
- **Output Duty Cycle:** 0% to 100%  
- **Output Current (Source/Sink):** ±1A (peak)  
- **Reference Voltage:** 5V (±1% accuracy)  
- **Error Amplifier Bandwidth:** 1 MHz  
- **Start-Up Current:** <1 mA  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** SOIC-8  

### **Descriptions:**  
The UC2842BD1 is designed for offline and DC-DC converter applications, providing precise control for switching power supplies. It features a trimmed oscillator for accurate duty cycle control, current sensing for cycle-by-cycle current limiting, and a high-gain error amplifier for tight voltage regulation.  

### **Features:**  
- **Current-Mode Operation:** Improves loop response and simplifies compensation.  
- **Under-Voltage Lockout (UVLO):** Ensures proper start-up and shutdown.  
- **Programmable Soft-Start:** Reduces inrush current.  
- **Pulse-by-Pulse Current Limiting:** Enhances system protection.  
- **Internal Trimmed Bandgap Reference:** Ensures stable operation.  
- **Latching PWM for Over-Voltage Protection:** Prevents damage during faults.  
- **Low Power Consumption:** Optimized for efficiency.  

This device is commonly used in power supply designs, including flyback, forward, and boost converters.

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