
( Brand: Nationnal Semi ), ( Manufacturer Part Number: LM2585S ), ( Mounting Style: Surface Mount ), ( Type: Step-up Voltage Regulator )
The LM2585S-ADJ/NOPB adjustable voltage regulators integrated circuits (ICs) manufactured by National Semiconductor are versatile and high-performance components designed to deliver stable voltage output in various applications. These regulators are available in SOT-223 and TO-220 packages and are renowned for their adjustability, noise reduction, and load regulation features.
The LM2585S-ADJ/NOPB regulators employ a constant-frequency Bucking topology, which ensures efficient power conversion and low quiescent current. They feature an adjustable output voltage range from 1.2V to 5.5V, making them suitable for powering a wide range of microcontrollers, digital circuits, sensors, and communication devices.
The adjustment of the output voltage is accomplished through external components, such as resistors and capacitors. The ICs also offer an on-chip overcurrent protection feature, which automatically disconnects the output when the load current exceeds the specified limit, ensuring the safety of the circuit and preventing potential damage.
The LM2585S-ADJ/NOPB regulators are also equipped with an adjustable noise reduction feature, which utilizes an external capacitor to minimize output noise and ripple. This feature is particularly beneficial in applications where low output noise is crucial, such as audio or telecommunication systems.
The ICs offer excellent load regulation, ensuring that the output voltage remains stable even under varying load conditions. They also feature a thermal shutdown mechanism, which automatically shuts down the output voltage when the junction temperature exceeds the specified limit, preventing thermal damage to the circuit.
The LM2585S-ADJ/NOPB regulators are highly compatible with various input voltage sources, including single-cell Li-ion, NiCd, and NiMH batteries, as well as dual-cell Li-ion batteries. They also provide excellent line and load transient response, making them suitable for applications with dynamic load requirements.
In summary, the adjustable LM2585S-ADJ/NOPB voltage regulators ICs by National Semiconductor offer stable voltage regulation, adjustability, noise reduction, and load regulation features, making them an ideal choice for a wide range of applications where precise and stable power supply is essential.
The LM2585 family of adjustable linear voltage regulators from Texas Instruments is widely used due to their versatility and ease of use. This analysis compares the LM2585S, LM2585S-ADJ, and LM2585S-ADJ/NOPB regulators to help engineers make informed decisions on which one to choose.
2. LM2585S: - Pros:* Wide input voltage range (minimum 2.5V to maximum 5.5V)
* Low quiescent current (2.5mA)
* High output current capability (up to 1.5A)
* Easy to use with a fixed 2.2k external resistor for adjusting output voltage
- Cons:* No built-in adjustment pin for external voltage trimming
* Requires an external potentiometer or resistor network for output voltage adjustment
3. LM2585S-ADJ: - Pros:* Built-in adjustment pin for external voltage trimming
* Wide input voltage range (minimum 2.5V to maximum 5.5V)
* Low quiescent current (2.5mA)
* High output current capability (up to 1.5A)
- Cons:* Slightly more complex setup due to the adjustment pin
4. LM2585S-ADJ/NOPB: - Pros:* Built-in noise reduction with N-channel output stage
* Built-in adjustment pin for external voltage trimming
* Wide input voltage range (minimum 2.5V to maximum 5.5V)
* Low quiescent current (2.5mA)
* High output current capability (up to 1.5A)
- Cons:* Slightly more complex setup due to the adjustment pin
* Higher price compared to LM2585S and LM2585S-ADJ due to the noise reduction feature
5. Conclusion:The choice between LM2585S, LM2585S-ADJ, and LM2585S-ADJ/NOPB depends on the specific application requirements. If you need a simple and cost-effective voltage regulator with adjustable output, the LM2585S-ADJ is a good choice. However, if noise reduction is necessary, or if you require external voltage trimming, the LM2585S-ADJ/NOPB is the recommended option.
6. Recommendation:Based on the comparison, I would recommend the LM2585S-ADJ/NOPB for applications where noise reduction and external voltage trimming are essential. For simpler applications with adjustable output requirements, the LM2585S-ADJ is a more cost-effective option. Always consider the specific application requirements and constraints when making your decision.
The LM2585S, LM2585S-ADJ, and LM2585S-ADJ/NOPB are step-up voltage regulators from National Semi. They are designed for surface mount applications and ideal electronic components Semiconductors. LM2585S, LM2585S-ADJ/CAB38 HD01 EBE01 NATIONAL SEMI. These regulators convert and regulate power to meet specific voltage requirements, making them essential components for electrical equipment industrial systems.