QX5246F is a buck, constant current, high efficiency and high brightness LED driver.
The QX5246F is particularly suitable for applications with a wide input voltage range. The input voltage range is from 5.5V to 36V, and the QX5246F has a high rejection ratio to the input voltage.
The QX5246F uses a built-in low on-resistance power switch tube, which simplifies the peripheral circuit of the chip. Only a few external components are needed to achieve the step-down, constant current drive function, and the brightness control function can be realized through the DIM pin.
QX5246F sets the output current through an external resistor. Its built-in power MOS tube, high-end current detection achieves a current accuracy of ± 4%.
Due to the hysteresis control method, the QX5246F has a very fast response speed to load transients, and the maximum operating frequency can reach 1MHz.
QX5246F is available in ESOP8 package.
? Built-in 40V, 5A power MOS
? Current accuracy: ± 4%
? High efficiency: 95%
? High-end current detection, constant current output
? Brightness control, maximum brightness control frequency: 5KHz
? Hysteresis control: no compensation
? Maximum working frequency: 1MHz
? 5V, 2mA on-chip voltage regulator
? ESOP8 package
Typical application circuit diagram
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? Architectural, industrial and environmental lighting
? Car taillights, fog lights, indicator lights, emergency lights, MR16 and LED lights