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    VAS1263 规格书说明书

    General Description

    The VAS1263 is a step-down constant current high brightness LED (HBLED) driver withintegrated power switch. VAS1263 provides a cost-effective solution for outdoor lighting, architectural, automotive headlight and other LED illumination applications. VAS1263 can operate from 5V to 40V and provide an externally adjustable output current up to 5A. The device is well suited for applications requiring a wide input voltage range. The high-side current-sensing and an integrated current setting circuitry minimize the number of external components while delivering an LED current with ±5% accuracy. A novel control algorithm ensures excellent input-supply rejection and fast response during load transients and PWM dimming. The device operates up to 400 KHz switching frequency, thus allowing for small component size.


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