LMS1587IS-1.5

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LMS1587IS-1.5 is a linear voltage regulator from ON Semiconductor that is designed for applications requiring the precise regulation of voltage levels. The regulator is available in packages designed for both surface mounting and through-hole installations, making it a great fit for a wide range of designs. The device\'s performance and low quiescent current make it ideal for applications including battery-powered equipment, as well as automotive and communication systems.

The LMS1587IS-1.5 is a low dropout (LDO) voltage regulator that is capable of supplying currents up to 1.5A while providing tight line and load regulation. Its active low-power mode feature conserves power and is essential for battery-powered systems. Its various features, such as over temperature and over voltage protection, make it a dependable and reliable device.

The LMS1587IS-1.5 can be used to provide a constant output voltage within a range of 1.26V to 15V. It includes an enable signal, EN, as well as an active low-power mode signal, EVT. The EN pin allows for ON/OFF of the regulator, while the EVT pin puts the device into low-power mode when it is asserted. A low-power mode is available when the EVT pin is pulled-down to the ground logic level.

The LMS1587IS-1.5 achieves its precision through its use of an error-amplifying loop that is set to the maximum output voltage. This loop senses the output voltage and amplifies any deviations. Once the deviation reaches a certain point, the voltage is adjusted to bring it back on point. This type of regulation provides excellent stability and line regulation.

The device utilizes a P-channel MOSFET to provide stroke current. This current is then regulated by a precision voltage reference and an error amplifier. The controlled current is then passed through an external sense resistor to limit the output voltage. The output voltage is monitored and compared against the internal voltage reference. When the sensed voltage is higher than the internal reference voltage, the output voltage is decreased, and when it is lower than the reference voltage, the output voltage is increased.

The LMS1587IS-1.5 also includes thermal foldback protection to reduce the output current once a certain temperature is exceeded. This feature helps protect the device from damage due to excessive temperature. The device is also capable of operating over a wide range of temperatures, from -40°C to 125°C.

The LMS1587IS-1.5 is a precision voltage regulator that offers excellent performance and reliability in a wide range of operating conditions. Its low quiescent current, wide input voltage range and active low-power mode feature make it ideal for use in battery-powered applications, as well as automotive and communication systems. With its robust feature set, it is an excellent choice for many applications.

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