Overview
The OPA544TG3 from Texas Instruments is a high-voltage, high-current operational amplifier designed to drive a wide variety of high power loads. This device is part of the OPA544 series, known for its high performance FET op amp circuitry and robust power output stage. The OPA544TG3 is packaged in a 5-lead TO-220 package, which includes a copper tab for easy mounting to a heat sink, ensuring excellent thermal performance. It is specified for operation over the extended industrial temperature range of –40°C to +85°C, making it suitable for demanding industrial and commercial applications.
Key Specifications
| Specification | Value |
|---|---|
| Package Type | 5-lead TO-220 |
| Operating Temperature Range | –40°C to +85°C |
| Power Supply Range | ±10V to ±35V |
| Output Current (Typical) | 4A |
| Minimum Output Current | 2A |
| Slew Rate | 8V/µs |
| Internal Current Limit | Approximately 4A |
| Thermal Shutdown Temperature | Approximately 155°C |
Key Features
- High Output Current: The OPA544TG3 can deliver up to 4A of output current, making it suitable for high power applications.
- Wide Power Supply Range: The device can operate with power supply voltages ranging from ±10V to ±35V.
- High Slew Rate: With a slew rate of 8V/µs, the OPA544TG3 can handle high-speed signal applications.
- Internal Current Limit and Thermal Shutdown: The device is protected by an internal current limit and thermal shutdown circuit to prevent damage from overloads and high temperatures.
- Output Stage Compensation: The OPA544TG3 can be stabilized with an output series R/C compensation network to handle complex load impedances.
- Unbalanced Power Supplies: The device can operate with unbalanced power supply voltages, allowing for flexible power supply configurations.
Applications
The OPA544TG3 is versatile and can be used in various high power applications, including:
- Industrial Control Systems: Driving high power loads such as motors, valves, and other industrial actuators.
- Power Supplies and DC-DC Converters: As an output amplifier in high current power supplies and DC-DC converters.
- Audio and Professional Sound Systems: For driving high power audio loads such as speakers and amplifiers.
- Medical and Scientific Equipment: In applications requiring high current and high voltage precision, such as medical devices and scientific instruments.
Q & A
- What is the typical output current of the OPA544TG3?
The typical output current of the OPA544TG3 is approximately 4A.
- What is the operating temperature range of the OPA544TG3?
The OPA544TG3 operates over the extended industrial temperature range of –40°C to +85°C.
- What is the power supply range for the OPA544TG3?
The power supply range for the OPA544TG3 is ±10V to ±35V.
- Does the OPA544TG3 have internal protection circuits?
Yes, the OPA544TG3 has internal current limit and thermal shutdown circuits to protect against overloads and high temperatures.
- How can the OPA544TG3 be stabilized for complex load impedances?
The OPA544TG3 can be stabilized with an output series R/C compensation network to handle complex load impedances.
- Can the OPA544TG3 operate with unbalanced power supplies?
Yes, the OPA544TG3 can operate with unbalanced power supply voltages, allowing for flexible power supply configurations.
- What is the slew rate of the OPA544TG3?
The slew rate of the OPA544TG3 is 8V/µs.
- How should the OPA544TG3 be mounted for good thermal performance?
The OPA544TG3 should be mounted with its copper tab soldered to a circuit board copper area for good heat dissipation.
- What is the thermal shutdown temperature of the OPA544TG3?
The thermal shutdown temperature of the OPA544TG3 is approximately 155°C.
- Can the OPA544TG3 be used in life support devices?
No, Texas Instruments does not authorize or warrant the OPA544TG3 for use in life support devices and/or systems.
