XC8102AA01 TOREX [Torex Semiconductor], XC8102AA01 Datasheet - Page 7

• Manufacturer Part Number: XC8102AA01
• Description: Load Switch with Low On-Resistance
• Manufacturer: TOREX [Torex Semiconductor]

<CE Pin>
The XC8102 enables an output P-channel MOSFET switch and the IC internal circuitry to turn off by the signal to the CE pin. In
The output voltage becomes unstable when the CE pin is opened. If the input voltage to the CE pin is within the specified
threshold voltages, the logic is fixed and the XC8102 will operate normally. However, supply current may increase as a result
of the shoot-through current of internal circuitry when the medium level voltage is input to the CE pin.
＜Input/Output Capacitor＞
The XC8102 works well without an input and output capacitors. Also, an output capacitor of the power source can be used as
<CL Auto-Discharge Function>
The XC8102AA contains a C
device quickly discharge the electric charge in the output capacitor (C
whole IC circuit. The C
output capacitor (C
constant τ is defined as (τ = C x Rdischg). Output voltage after starting discharge can be calculated by the following
formula.
<Current Limiter, Short-Circuit Protection>
The XC8102 series contains a constant current limiter and fold-back current circuitry. The constant current limiter operates to
limit output current and the fold-back current circuitry operates as short circuit protection for the output pin.
When the load current reaches the limit current, the constant current limiter operates and the output voltage drops. The output
voltage further, then the fold-back current circuitry operates to decrease the output current.
short-circuited to the ground, the output current drops and maintains a flow about 30mA.
■NOTES ON USE
■OPERATIONAL EXPLANATION
1.
2.
3.
4.
the shutdown mode, the V
an input capacitor of the XC8102 and a bypass capacitor of the driving IC can be used as an output capacitor of the XC8102.
protection when used in high temperature. For the power dissipation of each package, please refer to the graphs of Package
Power vs. Operating Temperature in page 15 to 18.
Please use this IC within the stated absolute maximum ratings. Operation beyond these limits may cause degrading or
permanent damage to the device.
The X8102 goes into an undefined operation when the CE pin is left open. The CE pin shall be tied to low or high level.
V
The IC may get damage due to the reverse current toward the V
Current limit function is integrated. However, power dissipation may be beyond the limit before starting a fold-back current
OUT
pin voltage should not be applied beyond the V
L
) is determined by a CL auto-discharge resistor value (Rdischg) and an output capacitor value. Time
L
OUT
auto-discharge resistance is set at 480Ω (V
L
auto-discharge resistor and an N-channel transistor between the V
pin will be pulled down to the V
τ: Output discharge resistor value Rdischg×Output capacitor (C
V: Output voltage after starting discharge,
V
t : Discharge time,
OUT:
Output voltage,
V = V
OUT
x e
–t/
IN
τ
, or t=τIn (V
pin voltage.
SS
by the C
IN
L
pin.
) when a low signal to the CE pin is input to turn off a
L
OUT
auto-discharge function.
OUT
=4.0V TYP. @ V
/ V)
IN
=4.0). Discharge time of the
OUT
L
) value C
pin and the V
When the output pin is
SS
XC8102
pin. The
Series
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