NCP3901 Dual Input, Single Output Power Source Multiplexer The NCP3901 integrated circuit is a dual input, single output power source multiplexer. It is optimized for multiplexing 2 different charging inputs to feed a single input battery charger. To address all www.onsemi.com types of applications, the device is able to support autonomous and slave modes of operation. Reverse USB onthego is fully supported. MARKING Features DIAGRAM 3 A DC Minimum Current through Power Paths Reverse 5 V OTG Support through VINA Path 3901 AWLYWW WLCSP28 Maximum 20 V Over Voltage Threshold FCC SUFFIX 28 V Absolute Maximum Voltage on VINA CASE 567KR Compliance with IEC6100045 at 100 V for VINA 3901= NCP3901 A = Assembly Location Indication of Presence of Second Input WL = Wafer Lot Autonomous Priority Selection and Switch Over Lock Y = Year Small Footprint: 3.1 x 1.65 mm WLCSP28 0.4 mm Pitch WW = Work Week = PbFree Package 30 ms Minimum Breakbeforemake Time This is a PbFree Device ORDERING INFORMATION Typical Applications See detailed ordering, marking and shipping information on Handheld Devices page 11 of this data sheet. Tablets Smart Phone PDAs VINA CHANNEL 1 BACK OUT VINA TO BACK MOSFETS VINA OUT OUT VINA PRIMARY VINA OUT CHARGING OUT VINA Battery / SOURCE OUT System VINA OUTPUT (i.e. USB) DICHARGE HV SBC SYSTEM OUT VOVLO IN1 PROTECTED SENSE OUT VUVLO VINA S GND OTG EN / VINA EN GND CTRL INTERNAL POWER 1.8V GND SUPPLY / LDO REFERENCE MODE GND LOGIC CONTROL VOLTAGE GND 1.8V VOVLO DRIVERS FLAG / VINB EN VUVLO FLAG SECONDARY VINB CHARGING VINB SOURCE VINB CHANNEL 2 BACK (i.e. A4WP, VINB TO BACK MOSFETS Dock) NCP3901 Figure 1. Typical Application Circuit Semiconductor Components Industries, LLC, 2016 1 Publication Order Number: September, 2016 Rev. 2 NCP3901/D 1uF 1uF ESD ESD PRO TECTION PROTECTIO N IEC6100045 1. 2/50u s 10 /700u s >1 00V 4.7uF 4.7 uF LiIonNCP3901 Table 1. PIN FUNCTIONAL DESCRIPTION Pin Name Type Description A1 A2 A3 Channel 1 power input path. These pins must be decoupled with a A4 VINA POWER 1 F input capacitor. A5 A6 A7 C4 B5 B6 Output power path. Connected to battery charger. These pins must B7 OUT POWER be decoupled with a 4.7 F input capacitor. C5 C6 C7 B1 B2 B3 GND GROUND Ground. Must be connected to a ground plane. C2 C3 D4 D5 Channel 2 power input path. These pins must be decoupled with a VINB POWER 1 F input capacitor. D6 D7 C1 MODE DIGITAL INPUT Digital Input Pin. Used to determine autonomousor slave mode. Digital Input Pin. Used to determine autonomouslocked or autono- D1 CRTL DIGITAL INPUT mousnot locked mode. B4 VINA S ANALOG OUTPUT Image of VINA input when VINA is within the operating range. D2 VINA EN/OTG EN DIGITAL INPUT Used to select USB OnTheGo mode on channel 1 DIGITAL INPUT / OPEN VINB valid indicator. This pin is used to indicate VINB is valid. Can D3 VINB EN/FLAG DRAIN OUTPUT also be used as an input to enable both VINA and VINB channels. Pin Out 1324576 VINA VINA VINA VINA VINA VINA VINA GND GND GND VINA S OUT OUT OUT MODE GND GND OUT OUT OUT OUT VINA EN VINB EN CRTL VINB VINB VINB VINB /OTG EN /FLAG Figure 2. Package TOP VIEW www.onsemi.com 2 D C BA