XC8102 Datasheet, PDF (1/18 Pages) Torex Semiconductor – Small (1.2mm x 1.6mm) 400mA Line Switch with Low On-Resistance

XC8102 Series
ETR2502-004a
Small (1.2mm x 1.6mm) 400mA Line Switch with Low On-Resistance
■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 V_OUT pin voltage falls quickly to the V_SS 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.
■APPLICATIONS
● Mobile phones, Smart phones
● Digital still cameras, Digital video cameras
● Portable game consoles
● Portable equipment
■TYPICAL APPLICATION CIRCUIT
DC/DC OUT
2.1V
VIN
VOUT
VIN
VOUT
IN
Step Down
Li-ion
DC/DC
3.6V
XC9235
XC8102
CE
ON/OFF
VSS
CIN Control
CL
CPU
VIN
VOUT
XC8102
CE
ON/OFF
VSS
Control
CIN
CL
IN
CPU
ON/OFF
CIN Control
VIN
VOUT
XC8102
CE
VSS
CL
IN
CPU
■FEATURES
On Resistance
Input Voltage Range
: 0.28Ω@ V_IN=6.0V (TYP.)
: 0.31Ω@ V_IN=4.0V (TYP.)
: 0.35Ω@ V_IN=2.9V (TYP.)
: 0.52Ω@ V_IN=1.8V (TYP.)
: 0.60Ω@ V_IN=1.5V (TYP.)
: 0.80Ω@ V_IN=1.2V (TYP.)
: 1.2V～6.0V
Power Consumption
Stand-by Current
: 3.0μA@ V_IN=1.2V
: 3.6μA@ V_IN=2.9V
: 4.0μA@ V_IN=6.0V
: 0.1μA
Protection Circuit
:Current limit(Output Current)
480mA (TYP.) (1.8≦VIN≦6.0V)
: Short-circuit Protection,
Short current= 30mA (TYP.)
ON/OFF Function
: High Active Enable
High-Speed Discharge Function
Operating Temperature Range : -40℃～+85℃
Packages
: USP-4 (1.2 x 1.6 x 0.6 mm)
SSOT-24
SOT-25
■ TYPICAL PERFORMANCE
CHARACTERISTICS
●On Resistance vs. Input Voltage
XC8102AA01M/XC8102AA01G
VIN=CE
IOUT=50mA
CIN=None,CL=None
1.0
0.8
Ta=85℃
　 25℃
0.6
　　 -40℃
0.4
0.2
0.0
1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
Input Voltage : VIN (V)
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