65V/3.5A Asynchronous Step-Down Converter

The JW®H5123 series are current mode monolithic buck switching regulators. Operating with an input range of 4.5V~65V, the JWH5123 series delivers 3.5A of continuous output current with an integrated high side N-Channel MOSFET. At light loads, the regulator operates in low frequency to maintain high efficiency. Current mode control provides tight load transient response and cycle-by-cycle current limit.

The JWH5123 series guarantees robustness with short-circuit protection, thermal protection, current run-away protection, and input under voltage lockout.

The JWH5123 is available in DFN4x4-10 package, the JWH5123S and JWH5123P are available in ESOP8 package, which provides a compact solution with minimal external components.

l 4.5V to 65V operating input range 3.5A output current

l 0.8V ± 1% internal voltage reference (JWH5123)

l 0.75V ± 1% internal voltage reference (JWH5123S/JWH5123P)

l Adjustable switching frequency

l Power Good Indicator (JWH5123/JWH5123P)

l External Soft-start (JWH5123/JWH5123S)

l Adjustable UVLO and hysteresis

l Current run-away protection

l Short circuit protection

l Thermal protection

l Available in DFN4x4-10 package (JWH5123)

l Available in ESOP8 package(JWH5123S/JWH5123P)  

l Industrial Automation and Motor Control

l Vehicle Accessories: GPS Entertainment

l USB Dedicated Charging Ports and Battery Chargers

l 12-V, 24-V and 48-V Industrial, Automotive and Communications Power Systems