BCT72902中文资料Over-Voltage Protection Load Switch数据手册Broadchip规格书

描述 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.

特性 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)

应用 Application

• Smart Phones
• Tablets
• Charging Ports