LD1117D25

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LD1117D25 is an advanced three-terminal positive voltage regulator designed to provide up to 25 volts at 2.5A output current with a high accuracy output voltage of 1.25V. It is suitable for applications such as power supply regulation, battery charging, digital-to-analog converters (DACs), and sensor supplies.

The LD1117D25 is a member of the Linear Voltage Regulator (LVR) family of products from ON Semiconductor. As an LVR, it provides efficient, highly accurate voltage regulation with minimal power dissipation and operating voltage range from 10V to 40V. It also offers reverse current protection with low quiescent current, allowing for excellent performance in high efficiency applications.

The LD1117D25 is a three-terminal voltage regulator that includes an internal power MOSFET, driver, and current sense circuit to deliver ultra-low quiescent current. It is also designed to meet stringent requirements dictated by the most advanced applications, such as those involving high accuracy and/or low operating voltage.

The working principle of LD1117D25 is based on the standard LVR design. It uses an N-Channel MOSFET as the pass transistor, a simple single resistor current setting in the feedback loop, and a voltage sense circuit to regulate the output voltage. An internal current sense resistor is used for measuring the load current. The regulation point is set by a single resistor between the output of the regulator and ground. The output voltage from the regulator is determined through an external low-tolerance resistor. The current sense resistor limits the maximum load current, which is defined by the current regulator setting.

The LD1117D25 offers a wide range of applications in various industries. It can be used in communications, industrial, computing, and networking applications. It is also widely used in automotive and telecommunications applications. In addition, it can be used for battery charging, sensor supplies, microcontrollers, point-of-load regulators, and digital-to-analog converters (DACs). With its low quiescent current and high accuracy output, it is also suitable for medical, metering, and instrumentation applications.

Overall, the LD1117D25 is an efficient and highly integrated three-terminal positive voltage regulator that can provide up to 25 volts of output voltage at 2.5A output current with a high accuracy output voltage of 1.25V. It features an ultra-low quiescent current, reverse current protection, and a wide operating voltage range from 10V to 40V. Its wide range of applications makes it an ideal choice for various industries and applications including communications, industrial, computing, networking, automotive, and telecommunications.

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