Datasheet Analog Devices LTC3809EMSE#PBF

LTC3809
No RSENSE™, Low EMI,
Synchronous DC/DC Controller
DESCRIPTION FEATURES No Current Sense Resistor Required
Selectable Spread Spectrum Frequency Modulation
for Low Noise Operation
Constant Frequency Current Mode Operation for
Excellent Line and Load Transient Response
True PLL for Frequency Locking or Adjustment
(Frequency Range: 250kHz to 750kHz)
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
Output Overvoltage Protection
Micropower Shutdown: IQ = 9μA
Tiny Thermally Enhanced Leadless (3mm × 3mm)
DFN and 10-lead MSOP Packages APPLICATIONS n The LTC®3809 is a synchronous step-down switching regulator controller that drives external complementary power
MOSFETs using few external components. The constant …