SI4788CY-T1-E3 Vishay, SI4788CY-T1-E3 Datasheet - Page 6

• Manufacturer Part Number: SI4788CY-T1-E3
• Manufacturer: Vishay

Specifications of SI4788CY-T1-E3

• Lead Free Status / Rohs Status: Compliant

TYPICAL APPLICATIONS
The Si4788CY can be used to control a load up to 5-Amp
where the control logic voltage is different from the voltage of
the load being controlled, and/or the load has a large
capacitive component and inrush currents must be minimized
during switching.
The low R
applications such as power bus switching in notebook
computers and central office telecom equipment. For a load of
5 A, the voltage drop is only approximately 100 mV.
The control input is a CMOS compatible input with a minimum
high input voltage of 2.2 V with a power rail voltage of 5 V. It is
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Si4788CY
Vishay Siliconix
TYPICAL CHARACTERISTICS (25_C UNLESS NOTED)
0.01
0.1
DS(on)
2
1
10
−4
Duty Cycle = 0.5
0.2
0.1
0.05
0.02
of 20-mW typical makes the switch ideal for
Single Pulse
10
−3
Normalized Thermal Transient Impedance, Junction-to-Foot
Square Wave Pulse Duration (sec)
10
−2
therefore compatible with any CMOS logic voltage between
2.2 V and 5 V under these conditions with no extra
configuration required. With a 3.3-V power rail voltage the
minimum high input voltage is 1.5 V, making it compatible with
1.8-V logic.
The Si4788CY is designed to give a steady dv/dt on the output
during turn-on even with capacitive loads. The output rise time
is 280-ms typical with a 100-mF load, which corresponds to a
dv/dt of about 20 V/ms, or a capacitive inrush current of around
2-A max with a 100-mF load. Higher values of capacitance
result in a slower switching speed, therefore even with very
high values of capacitance, inrush should not be a problem.
10
−1
1
S-50246—Rev. D, 21-Feb-05
Document Number: 71100
10