NCP3902 High-Current Bidirectional Load Switch with Dual Input Support Description www.onsemi.com The NCP3902 is a high voltage, high current, bidirectional load switch. It provides input overvoltage and surge protection as well as reverseblocking of output voltage. The logic control of the device is designed to interact with both a system controller and a wireless charging receiver which allows creating a dual input charger application with a single switch. WLCSP20 Features CASE 567PM DC Input Voltage Operating Range from 3.0 V to 20 V 28 V DC Absolute Maximum Input Voltage MARKING DIAGRAM Pinselectable Overvoltage Protection (13 V / 17 V) Surge Protection Compliant with IEC6100045 at 100 V Input Voltage Sense Output with Selectable Clamp (16 V / 20 V) 3902 ALYWW Reverse Blocking Protection from OUT to USBIN Switch Onresistance of 23 m Typical A = Assembly Location 3 A DC Nominal and 5 A Maximum Current Capability L = Wafer Lot Autonomous Mode and Slave Mode Operation Y = Year 50 ms Input Supply Detect Deglitcher in Autonomous Mode WW = Work Week = PbFree Package 50 ms Breakbeforemake Timing with Discharge Bidirectional Status Indicator and OTG Enable Pin Device Enable Input (active low) ORDERING INFORMATION Wireless Enable Output (active low) See detailed ordering and shipping information on page 19 of this data sheet. These Devices are PbFree and are RoHS Compliant Typical Applications Smart Phone Handheld Devices Tablets Semiconductor Components Industries, LLC, 2017 1 Publication Order Number: March, 2018 Rev. 3 NCP3902/DNCP3902 TYPICAL APPLICATION DIAGRAM Wireless Rx EN N RX N NCP3902 Power Mux USBIN OUT Battery 25m Charger GND IEC OVP 100V USBIN OUT RX N Drivers System USB SNS Protected EN N Core To System & Control Sense Supply FLAG N Logic VP Ground / Float Figure 1. Application Schematic PIN OUT (TOP VIEW) Figure 2. Pin out Top View Table 1. PIN FUNCTION DESCRIPTION Pin out Name Type Function A1, A2, A3, A4, A5 USBIN Power Load switch input C1, C2 OUT Power Load switch output C5 USB SNS Analog Output Clamped USBIN sense output C3 VP Digital Input Overvoltage protection setting D4 EN N Digital Input Active Low logic enable D5 RX N Digital Output Wireless receiver active C4 FLAG N Digital Input OTG enable input Digital Output Ready for OTG output B4, B5 GND Ground Ground www.onsemi.com 2