LV52207NXB-VH

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The LV52207NXB-VH is a component in the family of PMIC - LED Drivers. The application field and working principle of the component is discussed in this article.

Application Field

The LV52207NXB-VH PMIC - LED Driver is designed as an advanced switch-mode driver for white LEDs. It provides high-efficiency operation in, driving two constant current outputs. The LV52207NXB-VH is a suitable component for a wide range of lighting applications, such as for indoor and outdoor lighting, interior LEDs, industrial, automotive and consumer backlighting.

Working Principle

The working principle of the LV52207NXB-VH includes the regulation of the output voltage and current for two constant current outputs. The LV52207NXB-VH is designed using a buck-boost topology and can drive up to 2.5A of output current over a wide input voltage range from 0V to 28V. The integrated transition bandwidth modulator helps improve the efficiency and reduce the total system cost.

The switching frequency of the LV52207NXB-VH can be adjusted either manually or digitally, adjusting the switching frequency depending on the application requirements. The device also supports both dimming methods such as analog dimming and pulse width modulation. The LV52207NXB-VH also has two channels with separate enable/disable signals and independent feedback control that are used to regulate the LED current.

The LV52207NXB-VH has an integrated phase lock loop architecture which supports LED current control from 0.1A to 2.5A. The built in under-voltage lock-out protects the device from momentary over-current conditions. The LV52207NXB-VH also has an under-voltage lock-out feature that prevents the device from being powered up if the input voltage is below 5V. The LV52207NXB-VH also offers protection against short circuit, open loop and over temperature conditions.

The LV52207NXB-VH has a low quiescent current of 3.2µA, which helps in achieving higher efficiency and longer battery life. It features an optimized high-voltage startup, that ensures fast start-up time even at low input voltages. The device also has a thermal shutdown voltage of 150°C for improved system reliability. The integrated logic control also allows for a wide range of operating diagnostics.

In summary, the LV52207NXB-VH is an advanced switch-mode driver suited for a wide range of applications such as indoor and outdoor lighting, industrial, automotive and consumer backlighting, LED control, etc. It provides high-efficiency operation and has an integrated transition bandwidth modulator which helps improve the efficiency and reduce the total system cost. It has an integrated phase lock loop architecture which supports LED current control from 0.1A to 2.5A. In addition, it offers protection against short circuit, open loop and over temperature conditions with an optimized high-voltage startup and a thermal shutdown voltage of 150°C for improved system reliability.

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