Overview
The BUF634P, 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 output current, eliminating thermal feedback, and improving capacitive load drive when used inside the feedback loop of operational amplifiers. The device operates with a low quiescent current of 1.5mA and offers a high output current of 250mA, making it suitable for both high-power and low-power applications.
Key Specifications
| Specification | Value |
|---|---|
| Output Current | ±250mA |
| Slew Rate | 2000V/µs |
| Bandwidth | 30MHz to 180MHz (pin-selected) |
| Quiescent Current | 1.5mA (30MHz BW) |
| Supply Range | ±2.25V to ±18V |
| Internal Protection | Internal current limit and thermal shutdown |
| Packages | 5-pin SOIC, 5-pin TO-220, 5-pin TO-263 (DDPAK) surface-mount |
Key Features
- High output current: up to ±250mA
- High slew rate: 2000V/µs
- Adjustable bandwidth: 30MHz to 180MHz via a resistor between V– and the BW pin
- Low quiescent current: 1.5mA at 30MHz bandwidth
- Wide supply range: ±2.25V to ±18V
- Internal current limit and thermal shutdown protection
- Available in various packages: SOIC-8, TO-220, and TO-263 (DDPAK) surface-mount
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 BUF634P?
The BUF634P can deliver up to ±250mA continuous output current. - How can the bandwidth of the BUF634P be adjusted?
The bandwidth can be adjusted from 30MHz to 180MHz by connecting a resistor between V– and the BW pin. - What is the quiescent current of the BUF634P at 30MHz bandwidth?
The quiescent current is 1.5mA at 30MHz bandwidth. - What are the available packages for the BUF634P?
The BUF634P is available in 5-pin SOIC, 5-pin TO-220, and 5-pin TO-263 (DDPAK) surface-mount packages. - Does the BUF634P have internal protection features?
Yes, it has internal current limit and thermal shutdown protection. - What is the supply voltage range for the BUF634P?
The supply voltage range is ±2.25V to ±18V. - Can the BUF634P be used to improve capacitive load drive?
Yes, it can be used to improve capacitive load drive when used inside the feedback loop of op amps. - Is there a newer version of the BUF634P available?
Yes, a newer version called the BUF634A is available. - What is the slew rate of the BUF634P?
The slew rate is 2000V/µs. - What are some common applications of the BUF634P?
Common applications include valve drivers, solenoid drivers, op amp current boosters, line drivers, headphone drivers, video drivers, motor drivers, test equipment, and ATE pin drivers.
