LM22679TJ-5.0/NOPB

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The LM22679TJ-5.0/NOPB is an ultra-efficient, wide input, non-isolated, buck step-down voltage regulator. It is a DC-to-DC switching regulator offers up to 97% efficiency, with features including thermal shutdown and over-current protection. It offers a wide input voltage range of 5V to 22V, making it suitable for applications such as ATX power supply, automotive, as well as industrial.

The LM22679TJ-5.0/NOPB belongs to the PMIC - Voltage Regulators - DC DC Switching Regulators category, which includes adjustable and fixed regulators of the buck and boost type along with controllers to manage the process. DC-DC switching regulators employ switches and inductors to regulate the voltage, rather than linear components, which tend to be inefficient but offer smoother response.

The LM22679TJ-5.0/NOPB has a wide input voltage range of 5V to 22V, which makes it suitable for applications such as ATX power supply, automotive, and industrial. A 40V MOSFET withsynchronous rectification is used as a switch to increase efficiency. This switching regulator can provide from 600mA with an absolute maximum output current going up to 4.0A. It offers a 10kHz to 500kHz adjustable frequency for efficient power conversion and output power up to 15 Watts with an external Schotky diode.

At the heart of the device is the LM22679TJ-5.0/NOPB control-logic IC. It regulates the output to within +/-1.2 % over temperature and line variations. No external loop compensation is required. The device features built-in current limit and thermal shutdown protection. The IC works by monitoring the output voltage with an internal error amplifier and comparing the voltage with a reference voltage to generate an error signal.

The LM22679TJ-5.0/NOPB provides an enable function, allowing the output to be enabled or disabled. The enable pin has a typical threshold of 1.8V and an active-low enable option. The device is also available in an adjustable output version, which allows the user to set the output voltage via an external resistor divider.

The LM22679TJ-5.0/NOPB is packaged in a 7-pin SOIC package and is lead (Pb), RoHS, and REACH compliant. It is suitable for use in a wide temperature range of -40C to +125C and operates over a wide supply voltage range of 4.5V to 22V.

In summary, the LM22679TJ-5.0/NOPB buck step-down voltage regulator belongs to the PMIC - Voltage Regulators - DC DC Switching Regulators category and offers an ultra-efficient, wide input voltage range with features including thermal shutdown and over-current protection. It offers a wide input voltage range of 5V to 22V and offers a 10kHz to 500kHz adjustable frequency for efficient power conversion and output power up to 15 Watts with an external Schotky diode.

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