The Analog Devices LT3092EST#TRPBF is a versatile and precise 2-terminal programmable current source. It delivers a highly stable output current, adjustable using a single resistor. With low dropout voltage and wide input voltage range, it provides dependable performance in a variety of environments. The device ensures excellent accuracy and thermal stability, making it suitable for demanding linear current regulation tasks.
特徴
Low dropout voltage: Ensures efficient operation with minimal wasted energy.
Wide input voltage range: Operates within 2.5V to 40V for enhanced versatility.
High output current accuracy: Provides stable and precise current regulation.
Programmable current range: Adjustable from 0.5mA to 200mA.
Robust thermal and overload protection: Ensures reliability under tough operating conditions.
応用
Precision current biasing: Used in analog circuits for setting accurate current levels.
LED driving: Provides controlled current source for consistent LED performance.
Battery charging: Supports safe and accurate charging in battery systems.
Test and measurement systems: Enables reliable current sourcing for equipment testing.
Sensor excitation: Powers sensors with stable current for accurate readings.
Industrial control systems: Provides current regulation in automation setups.
設計上の考慮事項
Ensure the input voltage is at least 0.6V higher than the desired output for proper operation.
Use a low-tolerance resistor to accurately set the programmed current.
Account for power dissipation in high-load applications by using proper heat sinking or PCB thermal design.
Verify the rated maximum current (200mA) and avoid exceeding this limit to maintain device reliability.
Include proper decoupling capacitors on input and output to reduce noise and ensure stability.
よくある質問
Q: How do I calculate the output current?
A: Use the formula Iout = 10μA × Rset, where Rset is the programming resistor.
Q: What is the maximum current the LT3092 can source?
A: The device can provide up to 200mA.
Q: Can the LT3092 be used with AC input?
A: No, the device operates with DC input voltage only.
Q: Does the LT3092 require external protection components?
A: No, it has built-in thermal and current overload protections for safe operation.
数量が多いと価格は安くなりますか？
