MAX687CSA+

Voltage Regulators – Linear

The MAX687CSA+ is a linear voltage regulator from Maxim Integrated. This device is a low dropout (LDO) voltage regulator that boasts excellent line and load regulation for a wide variety of applications. The MAX687CSA+ is a low cost solution for designs requiring exceptional accuracy, precision, and performance. It is also suitable for high-noise and battery-powered applications due to its low noise operation and low quiescent current.

Application Field

The MAX687CSA+ is ideal for use in a wide variety of applications including: power management of portable devices, DC/DC converters, personal electronics, laptop computers and other mobile equipment. Additionally, it is well suited to applications requiring high output current and low dropout voltage such as voltage regulation or driving logic circuits.

Working Principle

The MAX687CSA+ operates by converting an input voltage to a fixed output voltage. The device is essentially an adjustable voltage regulator. It includes three main components: the error amplifier, the current limiter, and the Pass transistor. When there is an input voltage to the device, the error amplifier compares the input voltage to the reference voltage, and produces a proportional voltage output. This output is then processed by the current limiter that sets an appropriate current limit for the device. Finally, the output is regulated by the Pass transistor that controls the output voltage.

The MAX687CSA+ is equipped with on-chip thermal protection, which helps protect the device from excessive power dissipation and prolonged operation in the event of an over-temperature condition. Further, it has overcurrent protection that turns off when the input-to-output differential is greater than the specified maximum, ensuring the device remains in a safe operating condition.

Conclusion

The MAX687CSA+ is a linear voltage regulator from Maxim Integrated that is suitable for a wide variety of applications. It operates by converting an input voltage to a fixed output voltage and features on-chip thermal and overcurrent protection. The MAX687CSA+ is a low cost and reliable solution for designs requiring exceptional performance.