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UC3843BVD1R2 from ST,ST Microelectronics

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UC3843BVD1R2

Manufacturer: ST

High Performance Current Mode Controller

Partnumber Manufacturer Quantity Availability
UC3843BVD1R2 ST 940 In Stock

Description and Introduction

High Performance Current Mode Controller The UC3843BVD1R2 is a current-mode PWM controller manufactured by STMicroelectronics. Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:

### **Specifications:**  
- **Manufacturer:** STMicroelectronics  
- **Category:** PMIC (Power Management IC)  
- **Type:** Current-Mode PWM Controller  
- **Output Type:** Transistor Driver  
- **Topology:** Boost, Flyback, Forward  
- **Voltage - Supply (Vcc/Vdd):** 8.4V to 30V  
- **Duty Cycle (Max):** 100%  
- **Frequency - Switching:** Up to 500kHz  
- **Output Current:** 1A (Peak)  
- **Operating Temperature:** -40°C to 85°C  
- **Package / Case:** SOIC-8  

### **Descriptions:**  
The UC3843BVD1R2 is a high-performance fixed-frequency current-mode PWM controller. It is designed for DC-DC converter applications and provides necessary features for controlling power supplies with minimal external components. It includes a trimmed oscillator, precision reference, high-gain error amplifier, and current-sensing comparator.  

### **Features:**  
- **Current-Mode Operation:** Provides cycle-by-cycle current limiting.  
- **Adjustable Frequency:** Up to 500kHz operation.  
- **Under-Voltage Lockout (UVLO):** Ensures proper start-up and shutdown.  
- **Internal Trimmed Bandgap Reference:** 5V with ±1% accuracy.  
- **High-Current Totem Pole Output:** 1A peak output drive.  
- **Low Start-Up Current:** Typically 0.5mA.  
- **Latching PWM for Cycle-by-Cycle Current Limiting:** Enhances protection.  
- **SOIC-8 Package:** Compact and suitable for space-constrained designs.  

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

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