Overview
The BUF634F/500E3, produced by Texas Instruments, is a high-speed, unity-gain, open-loop buffer designed for a wide range of applications. It is particularly useful for increasing the output current of operational amplifiers, eliminating thermal feedback, and improving the drive capability for capacitive loads. This device operates with a low quiescent current of 1.5 mA and can deliver up to 250 mA of output current, making it suitable for both high-performance and low-power applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage | ±2.25 | ±15 | ±18 | V |
| Output Current | - | - | ±250 | mA |
| Slew Rate | - | - | 2000 | V/µs |
| Bandwidth | 30 | - | 180 | MHz |
| Quiescent Current (Low IQ Mode) | 1.5 | - | 2 | mA |
| Quiescent Current (Wide BW Mode) | 15 | - | 20 | mA |
| Operating Temperature | -40 | - | 125 | °C |
| Junction Temperature | - | - | 150 | °C |
| Thermal Shutdown Temperature | - | - | 175 | °C |
Key Features
- High output current: Up to 250 mA
- High slew rate: 2000 V/µs
- Pin-selected bandwidth: Adjustable from 30 MHz to 180 MHz
- Low quiescent current: 1.5 mA in low IQ mode
- Wide supply range: ±2.25 V to ±18 V
- Internal current limit and thermal shutdown protection
- Available in 5-pin SOIC, TO-220, and TO-263 surface-mount packages
Applications
- Valve driver
- Solenoid driver
- Op amp current booster
- Line driver
- Headphone driver
- Video driver
- Motor driver
- Test equipment
- ATE pin driver
Q & A
- What is the maximum output current of the BUF634F?
The BUF634F can deliver up to ±250 mA of continuous output current.
- What is the slew rate of the BUF634F?
The slew rate of the BUF634F is 2000 V/µs.
- How can the bandwidth of the BUF634F be adjusted?
The bandwidth can be adjusted from 30 MHz to 180 MHz by connecting a resistor between V– and the BW pin.
- What are the available package types for the BUF634F?
The BUF634F is available in 5-pin SOIC, TO-220, and TO-263 surface-mount packages.
- What is the quiescent current in low IQ mode?
The quiescent current in low IQ mode is approximately 1.5 mA.
- Does the BUF634F have thermal protection?
- What is the operating temperature range of the BUF634F?
The operating temperature range is from -40°C to 125°C.
- What are some common applications of the BUF634F?
- Is there a newer version of the BUF634F available?
- What is the thermal shutdown temperature of the BUF634F?
The thermal shutdown temperature is approximately 175°C.
