DATA SHEET www.onsemi.com MARKING 3A Ultra-Small Low Ron DIAGRAM and Controlled Load Switch WLCSP6 XXXX with Auto-Discharge Path FC SUFFIX AYW CASE 499BR NCP451 The NCP451 is a very low Ron MOSFET controlled by external XXXX WLCSP6 logic pin, allowing optimization of battery life, and portable device AYW AFC SUFFIX autonomy. CASE 567KB Indeed, due to a current consumption optimization with NMOS structure, leakage currents are eliminated by isolating connected IC on XXXX = Specific Device Code the battery when not used. A = Assembly Location Output discharge path is also embedded to eliminate residual Y = Year W = Work Week voltages on the output rail. = PbFree Package Proposed in a wide input voltage range from 0.75 V to 5.5 V, in a small 0.9 x 1.4 mm WLCSP6, pitch 0.5 mm. PINOUT DIAGRAM Features 12 0.75 V 5.5 V Operating Range 12 m N MOSFET from 3.6 V to 5.5 V A OUT IN 13 m N MOSFET from 1 V to 3.3 V DC Current Up to 3 A Output AutoDischarge OUT IN B Active High EN Pin WLCSP6 0.9 x 1.4 mm These Devices are PbFree, Halogen Free/BFR Free and are RoHS GND EN C Compliant Typical Applications (Top View) Mobile Phones Tablets ORDERING INFORMATION Digital Cameras See detailed ordering, marking and shipping information on GPS page 10 of this data sheet. Portable Devices Semiconductor Components Industries, LLC, 2015 1 Publication Order Number: November, 2021 Rev. 11 NCP451/DNCP451 V+ LS NCP451 DCDC Converter A2 A1 Platform ICn IN OUT or B2 B1 IN OUT LDO C2 EN ENx EN 0 Figure 1. Typical Application Circuit PIN FUNCTION DESCRIPTION Pin Name Pin Number Type Description IN A2, B2 POWER Loadswitch input voltage connect a 1 F or greater ceramic capacitor from IN to GND as close as possible to the IC. GND C1 POWER Ground connection. EN C2 INPUT Enable input, logic high turns on power switch. OUT A1, B1 OUTPUT Loadswitch output connect a 1 F ceramic capacitor from OUT to GND as close as possible to the IC is recommended. BLOCK DIAGRAM IN: Pin A2, B2 OUT: Pin A1, B1 Charge Pump and soft start control Control logic EN: Pin C2 EN Block GND: Pin C1 Figure 2. Block Diagram www.onsemi.com 2 C1 GND