SPX1587AT-L-2-5/TR

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SPX1587AT-L-2-5/TR application field and working principle

SPX1587AT-L-2-5/TR is a type of low dropout (LDO) voltage regulator from SIPEX Co., Ltd. It is a three terminal linear regulator with low supply current, low dropout and high output current capability. This voltage regulator has an operating voltage range from 2V to 5.5V, an adjustable output voltage range from 1.7V to 5V, and an output current of 1A. This regulator is designed to provide reliable and efficient voltage regulation over the specified operating temperature range and to be used in space constrained applications.

The SPX1587AT-L-2-5/TR is designed using a P-channel enhancement-type MOSFET as the current path transistor. This type of MOSFET provides fast switching and low quiescent current drain. The regulator’s feedback voltage (VF) is compared to an internal reference voltage (VREF), and the error amplifier then makes the necessary adjustment to keep the output voltage (VO) in regulation. The feedback voltage is controlled by connecting an external resistor divider between the output and the feedback terminal.

The output voltage of the SPX1587AT-L-2-5/TR is adjustable with a single external resistor. The output voltage is programmed by connecting a resistor divider between the output and the feedback terminals. The output voltage is regulated to (1 + R2/R1) x VREF, where R2 and R1 are the external resistors and VREF is a typical 1.25V. This linear regulator also has an enable pin, which can be used to control the output voltage.

The SPX1587AT-L-2-5/TR is suitable for use in a wide range of applications, including handheld devices, personal computers, digital cameras, and audio amplifiers. It can be used for post-regulator both before resuming from suspend and after the main power supply has been discharged. This linear regulator provides excellent dropout performance, allowing it to support higher input and output voltages.

In conclusion, the SPX1587AT-L-2-5/TR is a highly efficient LDO voltage regulator designed to provide a reliable and efficient voltage regulation over the specified operating temperature range. It is suitable for use in a wide range of applications and its adjustable output voltage makes it a great choice for space-constrained applications. With its low supply current and low dropout, this voltage regulator provides excellent performance in its rated output current range.

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