NW4545
32V/45mΩ High Side Over-Voltage-Protection IC in CSP2x3-6 and SOT23-5
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NW4545 is an Over-Voltage-Protection (OVP) IC with an ultra-low 45mΩ RDSON high current high voltage MOSEFT. It can sustain voltage as high as 32V DC, protecting downstream devices from high voltage surges.
When input voltage of NW4545 exceed the OVP threshold, it responses quickly and shuts off the MOSFET. The OVP threshold can be externally adjusted with resistors at OVLO pin. There is also an over-current-protection feature for the switch. When overload condition occurs, it goes into a hiccup mode to protect the IC from over-heating. It also has an over-temperature protection feature that turns off the MOSFET.
NW4545 is available in SOT23-5 and CSP2x3-6.