Datasheet Analog Devices LT3991IMSE-3.3#PBF — Datenblatt

LT3991/LT3991-3.3/LT3991-5
55V, 1.2A Step-Down
Regulator with 2.8µA
Quiescent Current
Features Description 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 < 15mVP-P
n Wide Input Voltage Range: 4.3V to 55V
n 1.2A Maximum Output Current
n Adjustable Switching Frequency: 200kHz to 2MHz
n Synchronizable Between 250kHz to 2MHz
n Fast Transient Response
n Accurate 1V Enable Pin Threshold
n Low Shutdown Current: I = 700nA
Q
n Power Good Flag
n Soft-Start CapabilityV
n Internal Compensatio 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 The LT®3991 is an adjustable frequency monolithic buck …