VAS1251 is a synchronous buck LED driver chip with built-in power MOS tube, a switching frequency of up to 5.5M, and LED constant current output can be achieved by using SMD multilayer inductors and small SMD capacitors. The LED current value can be set by external feedback resistors, and the output current can reach 150mA. VAS1251 has a simple peripheral application circuit and very small space requirements.
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