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BCT72905
Over-Voltage Protection Load Switch
BCT72905
Over-Voltage Protection Load Switch
GENERAL DESCRIPTION
The BCT729XX OVP load switch features surge protection, an internal clamp circuit protects the device from surge voltages up to 110V.
The BCT729XX features an ultra-low 30.7mΩ(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 (BCT72901), 6.2V (BCT72902), 6.8V (BCT72905), 9.98V (BCT72909), 10.5V (BCT72910) and 14V (BCT72912), 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 BCT729XX is available in a RoHS compliant 1.8mm × 1.3mm QFNFC1.8X1.3-12L package.
APPLICATIONS
Smart Phones
Tablets
Charging Ports
FEATURES
Highly reliable 1.8mm × 1.3mm QFNFC1.8X1.3-12L package
Surge protection
IEC 61000-4-5: > 110V
Integrated low Rdson nFET switch: typical 30.7mΩ
4.5A continuous current capability
Default Over-Voltage Protection (OVP) threshold
BCT72901: 5.95V
BCT72902: 6.2V
BCT72905: 6.8V
BCT72909: 9.98V
BCT72910: 10.5V
BCT72912: 14V
OVP threshold adjustable range: 4V to 20V
Input maximum voltage rating: 29VDC
Fast turn-off response: typical 50ns
Over-Temperature Protection (OTP)
Under-Voltage Lockout (UVLO)
