LTC3772 Datasheet | Linear Technology

Micropower No RSENSE Constant Frequency Step-Down DC/DC Controller Features - No Current Sense Resistor Required - 40µA No-Load Quiescent Current - High Output Currents Easily Achieved - Internal Soft-Start Ramps VOUT - Wide VIN Range: 2.75V to 9.8V - Low Dropout: 100% Duty Cycle - Constant Frequency 550k Hz Operation - Low Ripple Burst Mode® Operation at Light Load - Output Voltage as Low as 0.8V - ±1.5% Voltage Reference Accuracy - Current Mode Operation for Excellent Line and Load Transient Response - Only 8µA Supply Current in Shutdown - Low Profile 8-Lead SOT-23 (1mm) and (3mm × 2mm) (0.75mm) Packages APPLICATIO S - 1- or 2-Cell Li-Ion Battery-Powered Applications - Wireless Devices - Portable puters - Distributed Power Systems DESCRIPTIO The LTC®3772 is a constant frequency current mode step-down DC/DC controller in a low profile 8-lead SOT-23 (Thin SOTTM) and a 3mm × 2mm DFN package. The No RSENSETM architecture eliminates the need for a current sense resistor, improving efficiency and saving board space. The LTC3772 automatically switches into Burst Mode operation at light loads to increase efficiency at low output current. It consumes only 40µA of quiescent current under a no-load...