XC8102

General Description

The XC8102 series is a low ON resistance line switch IC with ON/OFF control and output current protection which integrates a P-channel MOSFET. By connecting the XC8102 to the output pin of a step-down DC/DC converter, the CE pin controls ON/OFF for each distribution switch to deliver power per requirements and maximize total power efficiency. As a result, the XC8102 helps to extend battery life and product operation time. The series 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 CE pin, the series enters stand-by mode. Even where a load capacitor is connected to the output pin during stand-by, 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 VSS level. The series contains over current protection with fold-back current circuitry which operates as over current protection and short circuit protection for the output pin.

Features

• On Resistance : 0.28Ω@ VIN=6.0V (TYP.)
  0.31Ω@ VIN=4.0V (TYP.)
  0.35Ω@ VIN=2.9V (TYP.)
  0.52Ω@ VIN=1.8V (TYP.)
  0.60Ω@ VIN=1.5V (TYP.) 0.80Ω@ VIN=1.2V (TYP.)
• Output Current : 200mA
  Current Limit =300mA (TYP.)
• Input Voltage Range : 1.8V ~ 6.0V
• Power Consumption : 3.0μA@ VIN=1.2V 3.6μA@ VIN=2.9V 4.0μA@ VIN=6.0V
• Stand-by Current : 0.1μA
• ON/OFF Function : High Active Enable
• Operating Temperature Range : -40?~85?
• Packages : USP-4, SSOT-24, SOT-25
• Protection Circuit : Current limit(Output Current) 480mA (TYP.) Short-circuit Protection
  Short current= 30mA (TYP.)

Applications

• Mobile phones, Smart phones
• Digital still cameras, Digital video cameras
• Portable games
• Portable equipment

Typical Application Circuit