WP3891 Datasheet | WAYON

Description 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 pliant 2.1mmx1.6mm Wafer Level Chip Scale Packaging (WLCSP). Features  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)  pliance to IEC61000- 4- 2 (Level 4): bypassed with a 1.0μF or larger capacitor 15k V(Air) 8k V (Contact) ; ESD Ratings: HBM >2k V Applications  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 page 1 of 7 Pin Configuration Pin Function PIN A1,A2,A3,A4,B1 A5 B2,C1,C2,C3,C4 B3 B4 B5 C5 NAME OUT OTG_EN IN ACOK OVLO Figure1:pin map DESCRIPTION Overvoltage Protection Output when OTG_EN=low and OTG output when OTG_EN=high. Bypass OUT with a 1µF ceramic capacitor. Enable Input for OTG Supply Operation or Overvoltage Protection Overvoltage Protection Input when OTG_EN=low and OTG output when OTG_EN=high. If desired, bypass IN with a 0.1µF ceramic capacitor as close to the device as possible. 1.8V Logic Output. It is driven high after input voltage is...