LMZ10503TZX-ADJ/NOPB

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DC-DC converters provide an efficient and reliable way to convert a voltage from one level to another. These converters are used in power supplies, charging systems, motor controllers, and many other applications. The LMZ10503TZX-ADJ/NOPB is a member of Texas Instruments\' popular LMZ Series of DC-DC power converters. The LMZ10503TZX-ADJ/NOPB was designed to provide customers with an efficient and cost-effective solution for powering their applications.

The LMZ10503TZX-ADJ/NOPB is a high-efficiency, wide-input voltage range DC-DC converter with a 3 A switch current limit and an adjustable output voltage. Its maximum output current is 2 A and its switching frequency is selectable from 200 kHz to 2 MHz. The LMZ10503TZX-ADJ/NOPB is a monolithic, synchronous buck converter with integrated power MOSFET and loop compensation components. It has a wide input voltage range of 2.25 V to 13.2 V, making it suitable for applications powered by various battery chemistries.

The LMZ10503TZX-ADJ/NOPB is ideal for applications in the automotive, industrial, and consumer markets. It can be used in automotive infotainment and telematics, industrial point-of-load, and consumer mobile battery chargers. Its wide input voltage range and selectable switching frequency allows it to be used in a wide range of applications. It also supports a variety of control methods for enhanced performance.

The LMZ10503TZX-ADJ/NOPB utilizes an innovative topology consisting of main and auxiliary power stages. The main stage is a synchronous buck converter that operates at a fixed frequency of 2 MHz. The auxiliary stage is also a synchronous buck converter that operates at a selectable frequency between 200 kHz and 2 MHz. This topology allows for the entire power stage to operate at the same switching frequency while the auxiliary stage sets the output voltage of the converter.

The LMZ10503TZX-ADJ/NOPB offers proprietary Constant On-Time, adaptive on-time control, and voltage tracking control modes. In Constant On-Time mode, the converter operates at a fixed frequency with no spread spectrum. In adaptive on-time mode, the controller adjusts the on-time based on the input voltage and load conditions. In voltage tracking mode, the output voltage is monitored and adjusted in real time to maintain a constant voltage output.

The LMZ10503TZX-ADJ/NOPB has additional features designed to optimize efficiency and reduce system noise. These include an integrated soft-start, current limit circuits, and an output voltage Margin Control. The current limit circuits reduce the current to the output voltage when the load on the power supply is under stress. The output voltage margin control reduces the input ripple current and increases efficiency by allowing the current limit to be set at a higher level than the output voltage.

The LMZ10503TZX-ADJ/NOPB also has an integrated VREF (voltage reference) to provide the necessary accuracy of the power supply’s output voltage. Additionally, an integrated feature allows for over-voltage protection, under-voltage protection, and current limit protection, aiding in the safety of the overall system. This makes the LMZ10503TZX-ADJ/NOPB an efficient and reliable power supply for a wide range of applications.

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