LM2672N-ADJ

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LM2672N-ADJ is a versatile DC-DC switching regulator integrated circuit (IC) from Texas Instruments featuring an adjustable voltage output, low power, current or voltage mode control, and system-level fault protection.

The LM2672N-ADJ is a fixed frequency, constant on-time (COT) DC-DC step down converter designed to reduce battery current while providing excellent line and load transient response. This device features an adjustable 0.6V-5.5V voltage output and is specifically designed for battery applications.

The device requires relatively few external components, is compact in size and provides up to 1A of continuous output current. In addition, the LM2672N-ADJ has a wide adjustable output voltage range, which makes it ideal for use in a variety of applications, including portable cameras, notebook computer, LCD TVs and more.

Applications of the LM2672N-ADJ include power supplies for consumer products, factory automation, Bluetooth and Wi-Fi connected devices, consumer attached parts and computer and imaging products. This device can also be incorporated into low-power, wireless communication systems and industrial products. LM2672N-ADJ can also be used for point-of-load (POL) DC-DC converters and Power-over-Ethernet (PoE) applications.

Working Principles of LM2672N-ADJ

The LM2672N-ADJ is a current-mode, step-down converter that uses a constant on-time (COT) control scheme. The device switches at a constant frequency and with a fixed duty cycle. The LM2672N-ADJ features a fixed operating frequency range of 100 kHz to 600 kHz, making it well suited for adjustable frequency applications. The device is designed to drive a synchronous rectifier MOSFET switch with external synchronized clock sources.

The device features an adjustable output voltage and is capable of supplying up to 1A of output current with a 3.3V input voltage. It also features an adjustable soft-start feature, which is used to limit the output in-rush current. The device also includes an adjustable current limit feature that can be used to limit the peak output current.

The LM2672N-ADJ also includes built-in over-temperature protection and under-voltage lockout features to protect the device from abnormal conditions. The device features a power-good (PG) output voltage detector. This allows the device to be securely connected to power and ensures that the output voltage is stable. The external gate drive circuitry provides gate drive to the synchronous rectifier MOSFET switch.

Conclusion

The LM2672N-ADJ is an extremely versatile DC-DC switching regulator IC from Texas Instruments. The device provides excellent line and load transient response, an adjustable voltage output, and built-in protection features. The device also features a power-good voltage detector, which ensures that the output voltage is stable. The device is specifically designed for battery applications and can be used for applications such as power supplies for consumer products, factory automation, Bluetooth and Wi-Fi connected devices, consumer attached parts and computer and imaging products.

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