Datasheet Analog Devices LTC3809EDD-1#PBF — 数据表

LTC3809-1
No RSENSETM, Low Input
Voltage, Synchronous DC/DC
Controller with Output Tracking
FEATURES DESCRIPTION n The LTC®3809-1 is a synchronous step-down switching
regulator controller that drives external complementary
power MOSFETs using few external components. The
constant frequency current mode architecture with MOSFET
VDS sensing eliminates the need for a current sense resistor
and improves efficiency. n Programmable Output Voltage Tracking
No Current Sense Resistor Required
Constant Frequency Current Mode Operation for
Excellent Line and Load Transient Response
Wide VIN Range: 2.75V to 9.8V
Wide VOUT Range: 0.6V to VIN
0.6V ±1.5% Reference
Low Dropout Operation: 100% Duty Cycle
Selectable Burst Mode®/Pulse-Skipping/Forced
Continuous Operation
Auxiliary Winding Regulation
Internal Soft-Start Circuitry
Selectable Maximum Peak Current Sense Threshold
Output Overvoltage Protection …