Datasheet Analog Devices LT8640HUDC-1#PBF — 数据表

LT8640/LT8640-1
42V, 5A Synchronous
Step-Down Silent Switcher
with 2.5µA Quiescent Current
DESCRIPTION FEATURES Silent Switcher® Architecture
n Ultralow EMI Emissions
n Spread Spectrum Frequency Modulatio High Efficiency at High Frequency
n Up to 96% Efficiency at 1MHz, 12V to 5V
IN
OUT
n Up to 95% Efficiency at 2MHz, 12V to 5V
IN
OUT
n Wide Input Voltage Range: 3.4V to 42V
n 5A Maximum Continuous Output, 7A Peak
Transient Output
n Ultralow Quiescent Current Burst Mode® Operatio 2.5µA I Regulating 12V to 3.3V
Q
IN
OUT
n Output Ripple < 10mV
P-P
n Fast Minimum Switch On-Time: 30ns …

LT8640/LT8640-1
42V, 5A Synchronous
Step-Down Silent Switcher
with 2.5µA Quiescent Current
DESCRIPTION FEATURES Silent Switcher® Architecture
nn Ultralow EMI/EMC Emissions
nn Spread Spectrum Frequency Modulation
nn High Efficiency at High Frequency
nn Up to 96% Efficiency at 1MHz, 12V to 5V
IN
OUT
nn Up to 95% Efficiency at 2MHz, 12V to 5V
IN
OUT
nn Wide Input Voltage Range: 3.4V to 42V
nn 5A Maximum Continuous Output, 7A Peak
Transient Output
nn Ultralow Quiescent Current Burst Mode® Operation
nn 2.5µA I Regulating 12V to 3.3V
Q
IN
OUT
nn Output Ripple < 10mV …

LT8640/LT8640-1
42V, 5A Synchronous
Step-Down Silent Switcher
with 2.5ВµA Quiescent Current
DESCRIPTION FEATURES Silent SwitcherВ® Architecture
nn Ultralow EMI/EMC Emissions
nn Spread Spectrum Frequency Modulation
nn High Efficiency at High Frequency
nn Up to 96% Efficiency at 1MHz, 12V to 5V
IN
OUT
nn Up to 95% Efficiency at 2MHz, 12V to 5V
IN
OUT
nn Wide Input Voltage Range: 3.4V to 42V
nn 5A Maximum Continuous Output, 7A Peak
Transient Output
nn Ultralow Quiescent Current Burst ModeВ® Operation
nn 2.5ВµA I Regulating 12V to 3.3V
Q
IN
OUT
nn Output Ripple < 10mV …