Feb. 2018 V1.1
Over-Voltage Protection Load Switch with Surge Protection
IEC 61000-4-5: > 100V
Integrated low Rdson nFET switch: typical 28mΩ
4.5A continuous current capability
Default Over-Voltage Protection (OVP) threshold
OVP threshold adjustable range: 4V to 20V
Input system ESD protection
IEC 61000-4-2 Contact discharge: ±8kV
IEC 61000-4-2 Air gap discharge: ±15kV
Input maximum voltage rating: 29VDC
Fast turn-off response: typical 125ns
Over-Temperature Protection (OTP)
Under-Voltage Lockout (UVLO)
1.34mm × 1.78mm WLCSP-12 package
5V to 20V Charging Ports
The AW328xx family OVP load switch features
surge protection, an internal clamp circuit protects
the device from surge voltages up to 100V.
The AW328xx features an ultra-low 28m (typ.)
Rdson nFET load switch. When input voltage
exceeds the OVP threshold, the switch is turned off
very fast to prevent damage to the protected
downstream devices. The IN pin is capable of
withstanding fault voltages up to 29VDC.
The default OVP threshold is 5.95V (AW32801),
6.8V (AW32805), 9.98V (AW32809) and 14V
(AW32812), the OVP threshold can be adjusted
from 4V to 20V through external OVLO pin.
The device features an open-drain output ACOK,
when VIN_UVLO < VIN < VIN_OVLO and the switch is
on, ACOK will be driven low to indicate a good
power input, otherwise it is high impedance.
This device features over-temperature protection
that prevents itself from thermal damaging.
The AW328xx is available in a RoHS compliant
12-bump 1.34mm × 1.78mm WLCSP.
TYPICAL APPLICATION CIRCUIT
Figure 1 Typical Application Circuit of AW328XX
Note: R1 and R2 are used for OVP threshold adjustment, to use default OVP threshold, connect OVLO to ground.
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