Texas Instruments

LM2687MM

LM2687MM Description

The LM2687MM is an adjustable charge pump voltage regulator designed by Texas Instruments. This device is part of the Power Management Integrated Circuits (PMIC) category and is housed in an 8-pin VSSOP package. The LM2687MM features an adjustable output type, allowing for flexibility in various applications. It operates within an input voltage range of 2.7V to 5.5V and delivers an output current of up to 10mA. The regulator employs a charge pump topology with a switching frequency of 110kHz, ensuring efficient power conversion. Notably, the LM2687MM has a negative output configuration, making it suitable for applications requiring negative voltage outputs.

LM2687MM Features

• Adjustable Output Voltage: The LM2687MM offers an adjustable output voltage, providing designers with the flexibility to tailor the output to meet specific application requirements.
• Wide Input Voltage Range: With an input voltage range of 2.7V to 5.5V, the regulator can accommodate a variety of power sources, enhancing its versatility.
• Low Output Current: The device is designed to deliver up to 10mA of output current, making it ideal for low-power applications where efficiency and minimal power consumption are critical.
• Charge Pump Topology: Utilizing a charge pump topology, the LM2687MM achieves high efficiency and low quiescent current, which is beneficial for battery-powered and portable devices.
• Negative Output Configuration: The negative output configuration is a unique feature that sets the LM2687MM apart from similar models, catering to applications that require negative voltage rails.
• Surface Mount Packaging: The LM2687MM is available in a surface mount package, facilitating easy integration into compact and space-constrained designs.
• Obsolete Status: While the LM2687MM is marked as obsolete, it remains a viable option for legacy systems and applications where its specific features are still required.

LM2687MM Applications

The LM2687MM is well-suited for a range of applications, particularly those that demand adjustable output voltages and low power consumption. Some specific use cases include:

• Battery-Powered Devices: The regulator's efficiency and low quiescent current make it ideal for extending battery life in portable electronics.
• Low-Power Systems: Applications such as wearable technology, IoT devices, and other low-power systems benefit from the LM2687MM's ability to deliver precise voltage regulation with minimal power loss.
• Negative Voltage Requirements: The negative output configuration is particularly useful in applications like op-amp biasing, analog-to-digital converters, and other circuits requiring negative voltage rails.
• Legacy Systems: Despite its obsolete status, the LM2687MM can be used to maintain and upgrade existing systems where its unique features are still necessary.

Conclusion of LM2687MM

The LM2687MM from Texas Instruments is a versatile and efficient charge pump voltage regulator designed for low-power applications. Its adjustable output voltage, wide input range, and negative output configuration make it a valuable component for a variety of electronic systems. While marked as obsolete, the LM2687MM continues to offer unique advantages over similar models, particularly in applications requiring negative voltage outputs and minimal power consumption. For designers working on low-power, battery-operated, or legacy systems, the LM2687MM remains a reliable and effective solution.