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2022-09-24 21:37:18
NB634EL-LF-Z buck converter imported original spot
NB634EL-LF-Z
High Efficiency 5A, 24V, 500kHz Synchronous Buck Converter
Product Description
NB634 is a high-efficiency synchronous rectification step-down switch-mode converter with built-in internal power FET. It provides a very compact solution to achieve 5A continuous output current over a wide input supply range with good load and line regulation. The NB634 operates efficiently over a wide output current load range. Current-mode operation provides fast transient response and simplifies loop stabilization. Complete protection features include latching OCP and thermal shutdown. The NB634 requires a minimum number of off-the-shelf standard external components and is available in a space-saving QFN14 (3mm x 4mm) package.
Product Features
Wide 4.5V to 24V operating input range
5a output current
Low RDS(On) Internal Power MOSFET
Proprietary switching loss reduction technology
Fixed 500kHz switching frequency
Sync from 300kHz to 2MHz external clock
Internal compensation
Latching OCP Protection and Thermal Shutdown
Output adjustable from 0.8V
Available in QFN14 (3mmx4mm) package
technical parameter
fsw (max) (kHz)500
Minimum input voltage 4.5
Vin (max) (V)24
Iout (max) (A)5
Isw Limit (typ) (A)7
Max Duty Cycle (%)0.9
Vfb (V)0.805
Iq (typ) (mA)1
Rated output 1
Vout (min) (V)0.805
GradeCatalog
PackageQFN-14 (3x4)
Common FeaturesLight-Load Efficiency, Power Good, Synchronous Rectification
Special FeaturesExternal Frequency Sync