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TL2843BDRG4-8 from TI,Texas Instruments

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TL2843BDRG4-8

Manufacturer: TI

High-Performance Current-Mode PWM Controller 8-SOIC -40 to 85

Partnumber Manufacturer Quantity Availability
TL2843BDRG4-8,TL2843BDRG48 TI 89 In Stock

Description and Introduction

High-Performance Current-Mode PWM Controller 8-SOIC -40 to 85 The TL2843BDRG4-8 is a current-mode PWM controller manufactured by Texas Instruments (TI). Below are its key specifications, descriptions, and features:

### **Specifications:**
- **Manufacturer:** Texas Instruments (TI)
- **Part Number:** TL2843BDRG4-8
- **Type:** Current-Mode PWM Controller
- **Topology:** Flyback, Forward, Boost, Buck
- **Input Voltage (VCC):** 8.4V to 30V
- **Output Voltage:** Adjustable via external components
- **Switching Frequency:** Up to 500 kHz
- **Duty Cycle Max:** 50%
- **Output Current (Source/Sink):** 200mA (Peak)
- **Operating Temperature Range:** -40°C to +85°C
- **Package:** SOIC-8

### **Descriptions:**
The TL2843BDRG4-8 is a high-performance PWM controller designed for DC-DC converter applications. It operates in current-mode control, providing improved loop response and simplified compensation. It is commonly used in power supply designs, including offline and isolated converters.

### **Features:**
- **Current-Mode Control:** Enhances transient response and simplifies loop compensation.
- **Trimmed Oscillator Discharge Current:** Ensures precise duty cycle control.
- **Automatic Feed-Forward Compensation:** Improves line regulation.
- **Latching PWM for Cycle-by-Cycle Current Limiting:** Enhances protection.
- **Undervoltage Lockout (UVLO):** Ensures proper startup and shutdown.
- **Internal Soft-Start:** Reduces inrush current.
- **Low Startup Current (0.5mA typical):** Improves efficiency.
- **High-Current Totem Pole Output:** Directly drives power MOSFETs.

This device is widely used in switch-mode power supplies (SMPS), battery chargers, and industrial power systems.

Application Scenarios & Design Considerations

High-Performance Current-Mode PWM Controller 8-SOIC -40 to 85

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