MC7808CT ON Semiconductor, MC7808CT Datasheet - Page 22

• Manufacturer Part Number: MC7808CT
• Description: IC REG VOLT POS 1A 8V TO220AB
• Manufacturer: ON Semiconductor

Specifications of MC7808CT

• Regulator Topology: Positive Fixed
• Voltage - Output: 8V
• Voltage - Input: Up to 35V
• Voltage - Dropout (typical): 2V @ 1A
• Number Of Regulators: 1
• Current - Output: 1A
• Operating Temperature: 0°C ~ 125°C
• Mounting Type: Through Hole
• Package / Case: TO-220-3 (Straight Leads)
• Polarity: Positive
• Number Of Outputs: 1
• Output Type: Fixed
• Output Voltage: 8 V
• Output Current: 2.2 A
• Line Regulation: 32 mV
• Load Regulation: 35 mV
• Input Voltage Max: 35 V
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: 0 C
• Mounting Style: Through Hole
• Voltage Regulation Accuracy: 4 %
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Current - Limit (min): -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: MC7808CTOS

8.0
4.0
20
16
12
0
-50
Figure 13. Worst Case Power Dissipation versus
-25
Ambient Temperature (Case 221A)
T
0
A
q
, AMBIENT TEMPERATURE (°C)
No Heatsink
HS
q
HS
= 0°C/W
25
= 15°C/W
q
50
HS
100
= 5°C/W
40
90
80
70
60
50
80
70
60
50
40
30
Figure 15. D
Figure 16. DPAK Thermal Resistance and Maximum
0
0
75
Power Dissipation versus P.C.B. Copper Length
Power Dissipation versus P.C.B. Copper Length
q
q
T
Mounted
Vertically
Free Air
JC
JA
J(max)
100
Vertically
Mounted
Free Air
5.0
5.0
= 5°C/W
= 65°C/W
= 150°C
Minimum
Size Pad
2
PAK Thermal Resistance and Maximum
125
L, LENGTH OF COPPER (mm)
L, LENGTH OF COPPER (mm)
http://onsemi.com
10
10
Minimum
Size Pad
150
22
R
P
15
15
P
D(max)
qJA
D(max)
R
qJA
for T
2.5
2.0
1.5
1.0
0.5
for T
0
Figure 14. Input Output Differential as a Function
-75
20
20
A
A
I
I
= 50°C
O
O
= 50°C
I
of Junction Temperature (MC78XXC, AC, B)
O
L
I
I
= 500 mA
= 200 mA
Î Î Î Î
Î Î Î Î
Î Î Î Î
Î Î Î Î
Î Î Î Î
Î Î Î Î
Î Î Î Î
Î Î Î Î
O
O
2.0 oz. Copper
L
= 20 mA
2.0 oz. Copper
= 1.0 A
= 0 mA
-50
25
25
L
L
-25
T
J
, JUNCTION TEMPERATURE (°C)
DV
- - - Extended Curve for MC78XXB
30
30
O
3.5
3.0
2.5
2.0
1.5
1.0
2.4
1.6
1.2
0.8
0.4
0
2.0
= 2% of V
0
25
O
50
75
100
125