NCP340 Soft-Start Controlled Load Switch The NCP340 is a low Ron Nchannel MOSFET controlled by a softstart sequence of 2 ms for mobile applications. The very low R allows system supplying or battery charging DS(on) NCP340 PIN FUNCTION DESCRIPTION Pin Number Pin Name Type Description IN 1 POWER Power switch input voltage connect a 1 F or greater ceramic capacitor from IN to GND as close as possible to the IC. GND 2 POWER Ground connection EN 3 INPUT Enable input, logic high turns on power switch. OUT 4 OUTPUT Powerswitch output connect a 1 F ceramic capacitor from OUT to GND as close as pos- sible to the IC is recommended. PAD1 POWER Exposed pad can be connected to GND plane for dissipation purpose or any other thermal plane. BLOCK DIAGRAM IN: Pin1 OUT: Pin 4 1 F Gate driver and soft start control Battery VREF Charge Pump EN: 3 EN block 2 Figure 2. Block Diagram