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TL3843BDR-8 from TI,Texas Instruments

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TL3843BDR-8

Manufacturer: TI

High-Performance Current-Mode PWM Controller 8-SOIC 0 to 70

Partnumber Manufacturer Quantity Availability
TL3843BDR-8,TL3843BDR8 TI 1209 In Stock

Description and Introduction

High-Performance Current-Mode PWM Controller 8-SOIC 0 to 70 The TL3843BDR-8 is a current-mode PWM controller manufactured by Texas Instruments (TI). Below are its key specifications, descriptions, and features:

### **Specifications:**
- **Topology:** Current-mode PWM controller  
- **Input Voltage (VCC):** 7.6V to 30V (operating range)  
- **Under-Voltage Lockout (UVLO):** 7.6V (turn-on), 7.2V (turn-off)  
- **Switching Frequency:** Up to 500kHz  
- **Output Duty Cycle:** 0% to 100%  
- **Output Current (Peak):** ±1A (source/sink)  
- **Error Amplifier Gain Bandwidth:** 1MHz  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** SOIC-8  

### **Descriptions:**  
The TL3843BDR-8 is a high-performance PWM controller designed for DC-DC converter applications. It features current-mode control for improved loop response and simplified compensation. The device includes an onboard error amplifier, oscillator, PWM comparator, and a high-current totem-pole output driver.  

### **Features:**  
- **Current-Mode Control:** Enhances transient response and simplifies loop compensation.  
- **Adjustable Switching Frequency:** Set by external timing components.  
- **Precision Reference Voltage:** 5V ±1% trimmed bandgap reference.  
- **Soft-Start Capability:** Reduces inrush current during startup.  
- **Pulse-by-Pulse Current Limiting:** Protects against overloads.  
- **Low Startup Current:** Typically 0.5mA for efficient operation.  
- **Totem-Pole Output:** Optimized for driving power MOSFETs.  

This device is commonly used in power supplies, battery chargers, and DC-DC converters.

Application Scenarios & Design Considerations

High-Performance Current-Mode PWM Controller 8-SOIC 0 to 70

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