LM3671LC-1.8EV/NOPB

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The LM3671LC-1.8EV/NOPB is an Evaluation (EV) Board as part of the Linear Technology family of DC/DC and AC/DC (Off-Line) SMPS products. This Evaluation Board contains a low-dropout (LDO) regulator with a very low quiescent current, a high-efficiency DC/DC converter, and an integrated flyback transformer for a complete multi-phase power solution.

The LM3671LC-1.8EV/NOPB has a wide application field and various options to match different load conditions. This board can be used in a variety of situations including powering portable equipment, and edge computing solutions that require low standby current and high efficiency across all operating conditions. Operating from any input voltage between 4.5V and 18V, the LM3671LC-1.8EV/NOPB can provide a multi-phase solution for highest efficiency, or single phase solution for highest flexibility.

The LDO regulator has an adjustable output between 0.625V and 4V, and an adjustable output current up to 2A. It is a very low-dropout regulator which maintains stable regulation over a wide range of temperatures when used in conjunction with the LM3671LC-1.8EV/NOPB DC/DC converter. The LM3671LC-1.8EV/NOPB supports peak currents up to 3.25A and a maximum input voltage of 20V (28V maximum for up to 600mA output).

The LM3671LC-1.8EV/NOPB features a unique phase-shift full-bridge topology, allowing the input voltage to be operated at either “no-load” or “full-load” conditions. This allows for the highest efficiency possible without compromising the output voltage stability and ripple characteristics. The DC-DC converter can be configured for either single-phase operation or multi-phase operation (up to four phases) for increased efficiency.

The integrated flyback transformer further adds to the efficiency and provides a high degree of flexibility for the circuit. It allows for higher switching frequencies and for lower inductance losses while providing a large output voltage range. Additionally, the flyback transformer provides some isolation and protects the input circuitry from over-voltage conditions.

Design flexibility is further increased by the on-board digital power monitor. This monitor makes it easy to adjust the operating parameters of the system without the need for any external circuitry. Features such as the system voltage, current, and total power can be monitored and adjusted in real-time.

Overall, the LM3671LC-1.8EV/NOPB Evaluation Board offers a complete, flexible, and economical solution for power applications which require small, low quiescent current, and high efficiency. It provides an excellent platform for testing and evaluating the LM3671LC-1.8EV/NOPB in a wide variety of power applications and enables an optimal design solution.

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