NCP434, NCP435 2A Ultra-Small Controlled Load Switch with Auto-Discharge Path The NCP434 and NCP435 are a low Ron MOSFET controlled by external logic pin, allowing optimization of battery life, and portable www.onsemi.com device autonomy. Indeed, due to a current consumption optimization with PMOS MARKING structure, leakage currents are eliminated by isolating connected ICs DIAGRAM on the battery when not used. 1 XX Output discharge path is also embedded to eliminate residual WLCSP4 AYW voltages on the output (NCP435 only). CASE 567FG Available in wide input voltage range from 1.0 V to 4.0 V, and a very XX = Specific Device Code small 0.96 x 0.96 mm WLCSP4, 0.5 mm pitch. A = Assembly Location Y = Year Features W = Wafer Lot 1 V 3.6 V Operating Range 29 m P MOSFET at 3.3 V PIN DIAGRAM DC current up to 2 A 12 Output Autodischarge (NCP435) Active high EN pin A OUT IN WLCSP4 0.96 x 0.96 mm These are PbFree Devices Typical Applications Mobile Phones B GND EN Tablets Digital Cameras GPS (Top View) Portable Devices ORDERING INFORMATION See detailed ordering, marking and shipping information in the package dimensions section on page 9 of this data sheet. V+ LS NCP435 DCDC Converter A2 A1 Platform ICn IN OUT or LDO B2 B1 EN GND ENx EN 0 Figure 1. Typical Application Circuit Semiconductor Components Industries, LLC, 2013 1 Publication Order Number: August, 2016 Rev. 5 NCP435/DNCP434, NCP435 PIN FUNCTION DESCRIPTION Pin Name Pin Number Type Description IN A2 POWER Loadswitch input voltage connect a 1 F or greater ceramic capacitor from IN to GND as close as possible to the IC. GND B1 POWER Ground connection. EN B2 INPUT Enable input, logic high turns on power switch. OUT A1 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 OUT: Pin A1 Gate driver and soft start control Control logic EN: Pin B2 EN block Optional: NCP435 GND: Pin B1 Figure 2. Block Diagram MAXIMUM RATINGS Rating Symbol Value Unit IN, OUT, EN, Pins V V V 0.3 to + 4.0 V EN , IN , OUT From IN to OUT Pins: Input/Output V V 0 to + 4.0 V IN , OUT Maximum Junction Temperature T 40 to + 125 C J Storage Temperature Range T 40 to + 150 C STG Moisture Sensitivity (Note 1) MSL Level 1 Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality should not be assumed, damage may occur and reliability may be affected. 1. Moisture Sensitivity Level (MSL): 1 per IPC/JEDEC standard: JSTD020. www.onsemi.com 2