LM3673TLX-1.875/NOPB

The LM3673TLX-1.875/NOPB is a DC/DC voltage regulator from Texas Instruments. Its main purpose is as a step-up (boost) regulator to supply a higher output voltage from a lower input voltage. It is also suitable for other applications such as driving LEDs and providing a constant voltage supply. The LM3673TLX-1.875/NOPB is a versatile, easy-to-use device that is suitable for a wide range of applications.

The LM3673TLX-1.875/NOPB is a “low noise” DC/DC converter. It features an input voltage range of 2.5 volts to 5.5 volts and a maximum output voltage of 7.5 volts. It has a peak current capability of 1 ampere and a typical output current of 100mA. It is designed to operate at a switching frequency of 1.875MHz. The operating temperature range is -40°C to +85°C. The LM3673TLX-1.875/NOPB is available in the SOT23-5, USP-5, and VSSOP-8 package.

The LM3673TLX-1.875/NOPB is suitable for providing regulated output voltages for loads requiring low currents, such as LEDs, and for supplying a constant bias voltage. It is also suitable for higher voltage and current applications, such as providing a regulated output voltage for driving motors and other loads requiring high currents.

The LM3673TLX-1.875/NOPB operates in one of four distinct modes depending on the voltage on the enable (EN) pin. When the enable pin is high, the internal oscillator is disabled and the IC is in the “sleep” mode. When the enable pin is low, the internal oscillator is enabled and the chip is in “run” mode. In sleep mode, the supply current is typically 8μA, while in run mode it is typical 17μA.

The LM3673TLX-1.875/NOPB is designed with a constant switching frequency of 1.875MHz. This frequency is provided by an internal oscillator, which reduces the number of external components required, and allows for a very compact design. The LM3673TLX-1.875/NOPB employs a voltage mode control system, which provides fast transient response and excellent noise immunity. This makes it suitable for applications where noise immunity and fast transient response is important.

The use of a synchronous rectifier eliminates the need for a diode, which reduces the power losses from the device. It also increases the efficiency compared to devices with a diode.

The LM3673TLX-1.875/NOPB features separated ground pins for the input, output, and device power. This ensures that the ground points are independent of each other, providing better noise immunity and improved reliability. It also allows the device to be used in high-side switching applications.

The LM3673TLX-1.875/NOPB is protected against over current, overvoltage, and thermal overloads. These features help to protect the device from damage in the event of a fault condition.

In summary, the LM3673TLX-1.875/NOPB is an excellent DC/DC voltage regulator from Texas Instruments. It is suitable for providing a regulated output voltage for low and high current applications, such as LEDs and motors. Its low noise operation, fast transient response and excellent noise immunity make it an excellent choice for applications requiring a high quality voltage regulator.