The TL3845DRG4 is a versatile Pulse Width Modulation (PWM) controller integrated circuit designed and manufactured by Texas Instruments. This advanced controller is part of the TL384x series and is specifically engineered to offer exceptional performance in power supply systems. With its precision voltage reference and oscillator, the TL3845DRG4 is an ideal choice for a variety of applications, including switched-mode power supplies, DC-DC converters, and battery management systems.

Key Features

• Programmable Frequency: The TL3845DRG4 allows users to set the frequency of operation, providing flexibility to match the requirements of different applications.
• High-Efficiency Operation: Designed for high-efficiency power conversion, this controller helps in reducing power loss and improving overall system performance.
• Low Power Consumption: With its low startup current and operating current, the device ensures minimal power consumption during operation, making it suitable for energy-sensitive designs.
• Internal Error Amplifier: The inclusion of an internal error amplifier facilitates precise feedback control, contributing to the stability and accuracy of the output voltage.
• Under-Voltage Lockout (UVLO): The UVLO feature ensures the controller operates only when the input voltage is within an acceptable range, protecting the circuit from low-voltage conditions.

Technical Specifications

• Output Voltage: Adjustable depending on external components.
• Operating Frequency: Up to 500 kHz.
• Supply Voltage: 8.4 V to 30 V.
• Package: The TL3845DRG4 is offered in an 8-pin SOIC package, providing a compact footprint for space-constrained applications.
• Temperature Range: Operates over an industrial temperature range, ensuring reliable performance under varying environmental conditions.

Applications

The TL3845DRG4 is widely used in applications that require efficient power management and precise control, such as:

• AC-DC Power Supplies
• Isolated and Non-Isolated DC-DC Converters
• Power Supply for Telecom and Server Systems
• Battery Chargers
• LED Lighting Drivers

With its robust design and comprehensive features, the TL3845DRG4 from Texas Instruments stands out as a highly reliable PWM controller that meets the stringent requirements of modern electronic systems.