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SY5322 Sample Application
General Description

The SY5322 is a highly integrated circuits with input under-voltage and over-voltage protection, abnormal load current protection, over temperature protection. The SY5322 is used at the front end of charging circuits or low-voltage systems to protect the low-voltage system from abnormal input faults and can withstand abnormal input voltages up to 28V. When the input voltage exceeds the overvoltage protection threshold, the internal MOSFET will be turned off within 1μs to protect the back-end low-voltage system. the IC can limit the input current through the resistance connecting ILIM and ground to prevent the input current of the low-voltage system from being too large; When detecting that the temperature exceeds the over temperature threshold, the IC will shut down the MOSFET and stops the power supply.
The SY5322 can be used to SOT23-6 package. The rated temperature is -40℃~+85℃.

Features

28V input withstand voltage

Input Over Voltage Protection

The input OVP protection shutdown time is less than 1uS

Soft-start to prevent Inrush currents

Soft-stop to prevent voltage spikes

Support Input Current from 100mA to 1.5A;default 100mA if ILIM be left floating or 1.5A if ILIM be connected to ground

±10% OCP accuracy (ILIM be connected a resistance to ground)

Over temperature protection

EN Function

SOT23-6 Package

Typical Application Circuit Diagram
Applications

Smart phone, mobile phone

PADS

MP3 Player

Low-power handheld devices

Bluetooth Earphone