EUP3502A Datasheet | Eutech Microelectronics

1.5A Line Switch with Low On-Resistance DESCRIPTION The EUP3502A is a low dropout line switch IC with ON/OFF control and output current protection which integrates a P-channel MOSFET. By connecting the EUP3502A to the output pin of a step-down DC/DC converter, the EN pin controls ON/OFF for each distribution switch to deliver power per requirements and maximize total power efficiency. As a result, the EUP3502A helps to extend battery life and product operation time. The EUP3502A contains a current limit and protection circuit so these are not required externally unlike discrete circuit solutions where MOSFETs and resistors are used. When a low signal is input to the EN pin, the IC enters shutdown mode. Even where a load capacitor is connected to the output pin during shutdown, the electric charge stored at the load capacitor is discharged through the internal switch. As a result, the VOUT pin voltage falls quickly to the GND level. The EUP3502A contains over current protection. Features 2.5V to 5.5V Input Voltage Range 100mΩ On Resistance Low Shutdown Current：<1µA ON/OFF Control Function High Speed Auto Discharge Function Operating Temperature Range: -40°C ~+85°C Output Current Limit Thermal Shutdown Ro HS pliant and 100% Lead (Fb)-Free Halogen-Free APPLICATIONS Portable Equipment Laptop, Palmtops, Notebook puters LCD Monitor TV Typical Application Circuit DS3502A Ver 1.3 Apr. 2013 Figure 1. Block Diagram Pin Configurations Package Type Figure 2. Pin Configurations SOT23-5 Pin Description PIN SS GND SOT23-5 1 2 DESCRIPTION Soft-start control. Connect a capacitor from SS to GND to set the soft-start period. See Soft-start Capacitor. Ground. ON/OFF Control. Make sure EN pin never floating. Input voltage of the line switch. VOUT Output voltage of the line switch. DS3502A Ver 1.3 Apr. 2013 Ordering Information Order Number Package...