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CYG Wayon Circuit protection Co., Ltd.
No. 1001, Shiwan Qi Road, Pudong Area, Shanghai
Tel: 86-21- 50310888 50968308
The WP3891 is OVP switch can disconnect the systems from its output pin in case wrong input operating conditions are
detected. The system is positive overvoltage protected up to 28V.
When input (OVLO) is set lower than 0.2V. The overvoltage protection threshold is 5.9V. The overvoltage protection
threshold can also be adjusted by external resistors when input (OVLO) is set higher than 0.3V.
The WP3891 provide Over Temperature Protection and also provide Reverse Current Blocking when the WP3891’s
switch is disabled.
The WP3891 provide OTG function allows OUT voltage to supply IN.
The device is packaged in advanced Full-Green compliant 2.1mmx1.6mm Wafer Level Chip Scale Packaging
operating Range: 3V to 28V
Absolute maximum voltage of VIN: 29V
Low RDS(on): 60mΩ TYP at Vin=5V/0.3A
4.5A Maximum Continuous Current Capability
Overvoltage Lockout :OVLO=5.9V (TYP)
Debounce Time :20ms
OTG Enable function
Surge immunity to ±100V
CSP15 Package (1.6mm*2.1mm, ball pitch=0.4mm)
Compliance to IEC61000−4−2 (Level 4): bypassed with a 1.0μF or larger capacitor
15kV(Air) 8kV (Contact) ; ESD Ratings: HBM >2kV
Smartphones, Tablet PC
HDD, Storage and Solid State Memory Devices
Portable Media Devices, Laptop & MID
SLR Digital Cameras
GPS and Navigation Equipment
Industrial Handheld and Enterprise Equipment
Specifications are subject to change without notice
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