FOD3181 Fairchild Optoelectronics Group, FOD3181 Datasheet - Page 11

• Manufacturer Part Number: FOD3181
• Description: ISOLATOR 5KVRMS 1CH TOTEM 8DIP
• Manufacturer: Fairchild Optoelectronics Group

Specifications of FOD3181

• Voltage - Isolation: 5000Vrms
• Number Of Channels: 1, Unidirectional
• Current - Output / Channel: 500mA
• Propagation Delay High - Low @ If: 105ns @ 10mA
• Current - Dc Forward (if): 12mA ~ 18mA
• Input Type: DC
• Output Type: Push-Pull, Totem-Pole
• Mounting Type: Through Hole
• Package / Case: 8-DIP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

©2003 Fairchild Semiconductor Corporation
FOD3181 Rev. 1.0.8
I
This device is tested and specified when driving a com-
plex reactive load. The load consists of a capacitor in the
series with a current limiting resistor. The capacitor rep-
resents the gate to source capacitance of a power
MOSFET transistor. The test load is a 0.03uF capacitor
in series with an 40 resistor. The LED test frequency is
10.0kHz with a 50% duty cycle. The combined I
I
frequency.
OL
OH
output load current duty factor is 0.6% at the test
and I
OUTPUT
OL
Current
100
Generator
Load
LED
Test Conditions
Pulse
20V
Figure 14. FOD 3180 Output Current and Output Voltage vs. LED Drive
0
100
IF
MON
1
2
3
4
I
F
= 8mA
I
OH
Figure 15. Test Schematic
= 0.5A
FOD3181
P-Channel (ON)
OH
ON
and
11
1µs/Div
Figure 14 illustrates the relationship of the LED input
drive current and the device’s output voltage and sourc-
ing and sinking currents. The 0.03µF capacitor load rep-
resents the gate to source capacitance of a very large
power MOSFET transistor. A single supply voltage of
20V is used in the evaluation.
Figure 15 shows the test schematic to evaluate the out-
put voltage and sourcing and sinking capability of the
device. The I
their respective current pulses.
8
7
6
5
V
O
0.33 F
OH
and I
40
I
OL
N-Channel (ON)
= 0.5A
OL
are measured at the peak of
0.1 F
OFF
22 F
IO
MON
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