LM5575QMHX/NOPB

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The LM5575QMHX/NOPB is a high-efficiency, monolithic, Step-Down Switching Regulators designed to produce a regulated output voltage of 1.5V to 5V in voltage step down, current step-up and voltage-inverting applications. It features alternating, independent operation in either buck/boost/buck-boost configurations. The device can achieve an efficiency up to 98% from a 4V to 15V supply. The Buck-Boost operation provides adjustable output voltages from 0.6V to the supply voltage and contains an integrated 1A switch in both Boost and Buck configurations. The converter operates with a fixed frequency, 500 kHz, and is trimable via an external resistor.

In addition to its high efficiency, the LM5575QMHX/NOPB is extremely easy to use, allowing for quick and effortless set-up of its seven connections. The device can be enabled via its EN pin, which is designed to be compatible with logic signals ranging from 0.7V to 15V. The on/off control pin is an active-high, push-pull signal and provides an output voltage that is controllable by either sinking a current through the diode or sinking a current through an external resistor. Also, the LM5575QMHX/NOPB features an offset capacitor network, which allows a larger output voltage range by compensating the feedback loop gain.

The LM5575QMHX/NOPB is protected by three separate fault detections: over current protection (OCP), under voltage protection (UVP) and over temperature protection (OTP). The OCP senses the output current by using a sense resistor and shuts down the chip when the current reaches its maximum. The UVP shuts off the device if the input voltage is lower than its specified threshold voltage. The OTP monitors the die temperature and shuts off the device if it is higher than its allowable maximum temperature.

The LM5575QMHX/NOPB is well suited for applications such as low-voltage, high current power converters, portable or battery-powered devices, consumer electronics and portable medical equipment. The device can also be used in devices that require a low voltage output such as fixed wireless phones, digital cameras and handheld devices.

Overall, the LM5575QMHX/NOPB is an ideal DC to DC switching regulator for applications where high efficiency, easy-to-use and advanced protection features are required. With its wide input voltage range, low switching noise and cost-effective, it makes the perfect choice for a variety of voltage regulators, power converters and other applications.

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