LM3243TMX/NOPB

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The LM3243TMX/NOPB is a specialized power management integrated circuit (PMIC). As a PMIC, it performs many important functions to help protect and optimize power flows to a device. The LM3243TMX/NOPB application field and working principle offer technical details about this powerful PMIC.

The LM3243TMX/NOPB belongs to the series of TPSMUX family\'s analog multiplexers. This PMIC incorporates a low-side sensed current-mode DC/DC controller that provides a high-efficiency and flexible power supply solution. This DC/DC controller supports many different power applications, such as distributed power systems, microprocessor/DSP core voltage regulators and general-purpose point-of-load (POL) regulators.

The LM3243TMX/NOPB features a choice of 2.5/3.3 or 4.5/5.5V CMOS logic levels, and programmable current limit and soft-start capability. Other features include over-temperature protection, voltage supervisor and overcurrent shutdown. Moreover, the LM3243TMX/NOPB features fast response time (<20nS) and excellent accuracy. It provides an adjustable output voltage range of 0.9V to 5.5V, making it ideal for powering a wide range of portable products and modern digital electronics.

The LM3243TMX/NOPB working principle involve the action of a single controller, which coordinates the low-side sensing and control of a switching power supply. This controller works with an external current-sense firewall, which enables continuous monitoring of the channel current and ensures fast overcurrent protection. Furthermore, the controller ensures a low equivalent series resistance by using a pulse-width modulation (PWM) control loop.

The LM3243TMX/NOPB offers a wide input voltage range of 1.5V-10V, which allows it to work with a variety of input power sources. It also offers adjustable slew rate protection, which limits high-pressure components during switching transitions and optimises EMI performance. Furthermore, the LM3243TMX/NOPB features an adjustable output voltage and current limit, which allows it to offer flexible power delivery and protection.

The LM3243TMX/NOPB also features a smart thermal overload protection (TOP) feature, which automatically adjusts its operating frequency to reduce maximum junction temperature and the risk of thermal damage. This TOP feature can also be used to increase the overall system efficiency. Additionally, the LM3243TMX/NOPB incorporates a programmable soft-start delay, which can be used to minimise the in-rush current during start-up.

Overall, the LM3243TMX/NOPB is an advanced, feature-rich PMIC that offers reliable and efficient power delivery for a variety of portable products and modern digital electronics. With its wide input voltage range, fast response time, adjustable soft-start delay and excellent accuracy, the LM3243TMX/NOPB is an ideal solution for power-sensitive applications.

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