FOD3180 Fairchild Semiconductor, FOD3180 Datasheet - Page 11

• Manufacturer Part Number: FOD3180
• Description: High Speed Optocouplers MOSFET 2A OUT Gate Drvr Optocoupler
• Manufacturer: Fairchild Semiconductor

Specifications of FOD3180

• Input Type: DC
• Isolation Voltage: 5000 Vrms
• Minimum Forward Diode Voltage: 1.2 V
• Output Device: Transistor
• Configuration: 1 Channel
• Maximum Forward Diode Voltage: 1.8 V
• Maximum Reverse Diode Voltage: 5 V
• Maximum Input Diode Current: 25 mA
• Maximum Power Dissipation: 295 mW
• Maximum Operating Temperature: + 100 C
• Minimum Operating Temperature: - 40 C
• Package / Case: DIP-8
• Number Of Elements: 1
• Output Type: Push-Pull
• Forward Voltage: 1.8V
• Forward Current: 25mA
• Package Type: PDIP W
• Operating Temp Range: -40C to 100C
• Power Dissipation: 295mW
• Propagation Delay Time: 200ns
• Pin Count: 8
• Mounting: Through Hole
• Reverse Breakdown Voltage: 5V
• Operating Temperature Classification: Industrial
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

©2005 Fairchild Semiconductor Corporation
FOD3180 Rev. 1.0.6
Reflow Profile
Output Power Derating
T
package is limited to this level to ensure that under normal
operating conditions and over extended temperature
range that the semiconductor junction temperatures do
not exceed 125°C. The package power is composed of
three elements; the LED, static operating power of the
output IC, and the power dissipated in the output power
MOSFET transistors. The power rating of the output IC is
250mW. This power is divided between the static power of
the integrated circuit, which is the product of I
power supply voltage (V
static output power is 150mW, (V
6mA. This maximum condition is valid over the opera-
tional temperature range of -40°C to +100°C. Under these
maximum operating conditions, the output of the power
MOSFET is allowed to dissipate 100mW of power.
The absolute maximum output power dissipation versus
ambient temperature is shown in Figure 12. The output
driver is capable of supplying 100mW of output power
over the temperature range from -40°C to 87°C. The out-
put derates to 90mW at the absolute maximum operating
temperature of 100°C.
he maximum package power dissipation is 295mW. The
0.15
0.05
0.1
0
-40
V
I
LED Power = 45mW
Fig. 12 Absolute Maximum Power Dissipation
DD
DD
= 6mA
– V
-20
EE
T
= Max. = 25V
A
– AMBIENT TEMPERATURE (°C)
vs. Ambient Temperature
0
20
DD
300
250
200
150
100
50
– V
0
40
0
• Peak reflow temperature: 260 C (package surface temperature)
• Time of temperature higher than 183 C for 160 seconds or less
• One time soldering reflow is recommended
DD
EE
). The maximum IC
– V
60
0.5
EE
) = 25V, I
80
1
DD
Ramp up = 2–10C/sec
times the
260C peak
100
1.5
DD
Time (Minute)
Time above 183C, <160 sec
=
2
11
2.5
The output power is the product of the average output
current squared times the output transistor’s R
P
The I
peak
the ratio of the ‘on’ time of the output load current divided
by the period of the operating frequency. An R
2.0 results in an average output load current of 200mA.
The load duty factor is a ratio of the average output time
of the power MOSFET load circuit and period of the driv-
ing frequency.
The maximum permissible, operating frequency is deter-
mined by the load supplied to the output at its resulting
output pulse width. Figure 13 shows an example of a
0.03µF gate to source capacitance with a series resis-
tance of 8.50 . This reactive load results in a composite
average pulse width of 1.5µs. Under this load condition it
is not necessary to derate the absolute maximum output
current until the frequency of operation exceeds 63kHz.
O(AVG)
2.5
1.5
0.5
O(AVG)
245C, 10–30 s
3
2
1
0
1
current flowing in the output. The duty factor is
= I
Fig. 13 Output Current Derating vs. Frequency
O(AVG)
3.5
T
Load = .03µF +8.5Ω
V
I
LED Duty Factor = 50%
Output Pulse Width = 1.5µs
F
A
DD
is the product of the duty factor times the
= 12mA
= -40°C to 100°C
= 20V
2 • R
4
F – FREQUENCY (kHz)
DS(ON)
4.5
10
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DS(ON)
DS(ON)
100
:
of