LT3991-5
Features n Ultralow Quiescent Current: 2.8µA IQ Regulating 12VIN to 3.3VOUT n Fixed Output Voltages: 3.3V, 5V 2.1µA IQ Regulating 12VIN n Low Ripple Burst Mode® Operation: Output Ripple < 15m VP-P n Wide Input Voltage Range: 4.3V to 55V n 1.2A Maximum Output Current n Adjustable Switching Frequency: 200k Hz to 2MHz n Synchronizable Between 250k Hz to 2MHz n Fast Transient Response n Accurate 1V Enable Pin Threshold n Low Shutdown Current: IQ = 700n A n Power Good Flag n Soft-Start Capability V n Internal pensation n Saturating Switch Design: 0.44Ω On-Resistance n Output Voltage: 1.19V to 30V n Small Thermally Enhanced 10-Pin MSOP Package and (3mm × 3mm) DFN Packages
Applications n Automotive Battery Regulation n Power for Portable Products n Industrial Supplies
LT3991/LT3991-3.3/LT3991-5 55V, 1.2A Step-Down Regulator with 2.8µA Quiescent Current
Description
The LT®3991 is an adjustable frequency monolithic buck switching regulator that accepts a wide input voltage...
