High Performance, Constant Current Switching Regulator For 11PCS White LED In Series

The LP3321 is a 1.0MHz PWM boost switching regulator designed for constant-current white LED driver applications. The LP3321 can drive a string of up to 11 white LEDs in series, ensuring uniform brightness and eliminating several ballast resistors. The LP3321 implements a constant frequency 1.0MHz P · Up to 94% efficiency\n· Shut-down current:<1uA\n· Output voltage Up to 37V\n· Internal Compensation, Soft-start\n· Support down to 1% Dimming Duty Cycle\n· 1.0MHz fixed frequency switching\n· High switch on current:1.5A\n· Available in SOT23-6&TDFN-6(2mm×2mm)\n·Package;

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