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UC2843ADG4 from TI,Texas Instruments

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UC2843ADG4

Manufacturer: TI

Current Mode PWM Controller 14-SOIC -40 to 85

Partnumber Manufacturer Quantity Availability
UC2843ADG4 TI 125 In Stock

Description and Introduction

Current Mode PWM Controller 14-SOIC -40 to 85 The UC2843ADG4 is a high-performance current-mode PWM controller manufactured by Texas Instruments (TI). Below are its specifications, descriptions, and features based on Ic-phoenix technical data files:

### **Specifications:**  
- **Manufacturer:** Texas Instruments (TI)  
- **Category:** Integrated Circuits (ICs)  
- **Family:** PMIC - Voltage Regulators - DC DC Switching Controllers  
- **Topology:** Flyback, Forward, Boost, Buck  
- **Control Mode:** Current Mode  
- **Output Type:** Transistor Driver  
- **Number of Outputs:** 1  
- **Frequency - Switching:** Up to 500kHz  
- **Duty Cycle (Max):** 100%  
- **Supply Voltage (Vcc/Vin):** 8.4V to 30V  
- **Supply Voltage (Vcc) - Startup:** 16V (typical)  
- **Supply Current (Max):** 11mA  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package/Case:** SOIC-8  

### **Descriptions:**  
The UC2843ADG4 is a fixed-frequency PWM controller optimized for high-performance DC-DC power supply applications. It features current-mode control for improved transient response and simplified loop compensation. The device includes an under-voltage lockout (UVLO) circuit with hysteresis, ensuring reliable operation during startup and shutdown.  

### **Features:**  
- **Current-Mode Control:** Enhances line and load regulation.  
- **Automatic Feed-Forward Compensation:** Simplifies feedback loop design.  
- **Under-Voltage Lockout (UVLO):** Ensures proper startup and shutdown.  
- **Trimmed Oscillator Discharge Current:** Provides precise duty cycle control.  
- **High-Current Totem Pole Output:** Directly drives power MOSFETs.  
- **Pulse-by-Pulse Current Limiting:** Protects against overloads.  
- **Internal Soft-Start:** Reduces inrush current during startup.  
- **Low Startup and Operating Current:** Improves efficiency.  

This information is strictly factual and sourced from Ic-phoenix technical data files.

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