LT3991-3.3 PDF File ( Datasheet )

Features n Ultralow Quiescent Current: 2.8 A IQ Regulating 12VIN to 3.3VOUT n Fixed Output Voltages: 3.3V, 5V 2.1 A IQ Regulating 12VIN n Low Ripple Burst Mode® Operation: Output Ripple < 15mVP-P n Wide Input Voltage Range: 4.3V to 55V n 1.2A Maximum Output Current n Adjustable Switching Frequency: 200kH- to 2MH- n Synchronizable Between 250kH- to 2MH- n Fast Transient Response n Accurate 1V Enable Pin Threshold n Low Shutdown Current: IQ = 700nA n Power Good Flag n Soft-Start Cap