Datasheet Analog Devices LTC7803EUD#WPBF — 数据表

LTC7803
40V Low IQ, 3MHz Synchronous Step-Down
Controller with Spread Spectrum
FEATURES DESCRIPTION Low Operating IQ: 12µA (14V VIN to 3.3V VOUT)
n Wide Input Voltage Range: 4.5V to 40V
n Output Voltage Up to 40V
n Spread Spectrum Operatio R
SENSE or DCR Current Sensing
n PassThru™/100% Duty Cycle Capable
n Programmable Fixed Frequency (100kHz to 3MHz)
n Phase-Lockable Frequency (100kHz to 3MHz)
n Selectable Continuous, Pulse-Skipping, or Low
Ripple Burst Mode® Operation at Light Loads
n Low Shutdown I : 1.2μA
Q
n Thermally Enhanced 16-Pin 3mm × 3mm QFN and
MSOP Packages
n AEC-Q100 Qualification in Progress The LTC®7803 is a high performance, 100% Duty Cycle
Capable, synchronous step-down DC/DC switching
regulator controller that drives an all N-channel power
MOSFET stage. Synchronous rectification increases efficiency, reduces power losses and eases thermal requirements. A constant frequency current mode architecture
allows a phase-lockable switching frequency of up to
3MHz. The LTC7803 operates from a wide 4.5V to 40V …