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UC2843ADTR from TEXAS

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7.813ms

UC2843ADTR

Manufacturer: TEXAS

Current Mode PWM Controller

Partnumber Manufacturer Quantity Availability
UC2843ADTR TEXAS 23 In Stock

Description and Introduction

Current Mode PWM Controller The UC2843ADTR is a high-performance current-mode PWM controller manufactured by Texas Instruments. Below are its specifications, descriptions, and features based on factual information from Ic-phoenix technical data files:

### **Specifications:**  
- **Manufacturer:** Texas Instruments  
- **Category:** Integrated Circuits (ICs)  
- **Family:** PMIC - Voltage Regulators - DC DC Switching Controllers  
- **Topology:** Flyback, Forward, Buck, Boost  
- **Control Mode:** Current Mode  
- **Output Type:** Transistor Driver  
- **Number of Outputs:** 1  
- **Switching Frequency:** Up to 500 kHz  
- **Duty Cycle (Max):** 100%  
- **Supply Voltage (Vcc):** 8.4V to 30V  
- **UVLO (Undervoltage Lockout):** 8.4V (on), 7.6V (off)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** SOIC-8 (DTR)  
- **Mounting Type:** Surface Mount  

### **Descriptions:**  
- The UC2843ADTR is a fixed-frequency PWM controller optimized for high-performance DC-DC power supply applications.  
- It provides precise duty cycle control with current-mode operation for improved transient response and simplified loop compensation.  
- The device includes a trimmed oscillator, high-gain error amplifier, current sensing comparator, and a totem-pole output stage.  
- It is designed for offline and DC-DC converters with features like under-voltage lockout (UVLO) and cycle-by-cycle current limiting.  

### **Features:**  
- **Current-Mode Control:** Enhances loop response and simplifies compensation.  
- **Automatic Feed-Forward Compensation:** Improves line regulation.  
- **Trimmed Oscillator:** Provides precise frequency control.  
- **High-Current Totem-Pole Output:** Directly drives power MOSFETs.  
- **Undervoltage Lockout (UVLO):** Ensures proper startup and shutdown.  
- **Cycle-by-Cycle Current Limiting:** Protects against overloads.  
- **Low Startup Current:** Typically 0.5mA for efficient operation.  
- **SOIC-8 Package:** Compact and suitable for surface-mount applications.  

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

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