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TL3843BD from TI,Texas Instruments

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TL3843BD

Manufacturer: TI

High-Performance Current-Mode PWM Controller 14-SOIC 0 to 70

Partnumber Manufacturer Quantity Availability
TL3843BD TI 6 In Stock

Description and Introduction

High-Performance Current-Mode PWM Controller 14-SOIC 0 to 70 The TL3843BD is a high-performance current-mode PWM controller manufactured by Texas Instruments (TI).  

### **Specifications:**  
- **Input Voltage Range:** 8.5V to 30V  
- **Operating Frequency:** Up to 500 kHz  
- **Output Duty Cycle:** 0% to <100%  
- **Current Sensing:** Peak Current Mode Control  
- **Error Amplifier Bandwidth:** 1 MHz  
- **Output Drive Current:** ±1A (peak)  
- **Start-Up Current:** <1 mA  
- **Undervoltage Lockout (UVLO):** 8V (on) / 7.6V (off)  
- **Package:** SOIC-8 (D)  

### **Descriptions:**  
The TL3843BD is designed for DC-DC converter applications, providing precise voltage regulation with current-mode control. It features an adjustable oscillator, high-gain error amplifier, and a totem-pole output stage for driving power MOSFETs efficiently.  

### **Features:**  
- **Current-Mode Operation:** Improves loop response and simplifies compensation.  
- **Programmable Oscillator:** Allows frequency adjustment with external components.  
- **Internal Trimmed Reference:** 5V ±1% accuracy.  
- **Soft-Start Capability:** Reduces inrush current during startup.  
- **Pulse-by-Pulse Current Limiting:** Enhances system protection.  
- **Low Power Consumption:** Optimized for efficiency.  

This device is commonly used in power supplies, battery chargers, and industrial control systems.  

(Source: Texas Instruments Datasheet)

Application Scenarios & Design Considerations

High-Performance Current-Mode PWM Controller 14-SOIC 0 to 70

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