AS1390B-BSOT

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The AS1390B-BSOT offers a versatile and compact solution for LED driver applications.

The unique features of the part allow it to be used in a broad range of LED lighting applications, from automotive lighting applications to LED bulbs and LED LCD modules.

The AS1390B-BSOT is a 24V Boost converter that can be used to convert a DC voltage up to 24V into a regulated and constant current output. The drive current is programmable and can be set in steps of 10mA up to 900mA. The current output is monitored and regulated strictly with only a 6% variation. The device also features a high efficiency of up to 94% and a low quiescent current of 10mA.

The AS1390B-BSOT offers an integrated MOSFET to control the output current and an internal voltage regulator to ensure that the feedback loop remains stable. This feature allows the device to provide a constant output current even when the input voltage is varying due to load changes.

The on-chip thermal protection feature of the AS1390B-BSOT further helps to maintain operation in a safe manner. There is also an integrated gate driver giving full protection from over-voltage and under-voltage conditions.

The device is also capable of providing a PWM dimming feature which can be used to control the brightness of LEDs. This is achieved by simply connecting a dedicated PWM signal pin to the AS1390B-BSOT. The duty cycle of the PWM signal can be used to control the intensity of the LEDs.

The device is housed in a space-saving SO-8 package, which makes it ideal for high density PCB designs. The part is also RoHS compliant and is pin-to-pin compatible with the AS1390A-BSOT.

In summary, the AS1390B-BSOT is well-suited to LED driver applications and offers high efficiency and a wide dimming range with advanced protection features.

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