MC7918CT Fairchild Semiconductor, MC7918CT Datasheet - Page 8

• Manufacturer Part Number: MC7918CT
• Description: Linear Regulators - Standard TO-220 1A Neg Volt
• Manufacturer: Fairchild Semiconductor

Specifications of MC7918CT

• Polarity: Negative
• Number Of Outputs: 1
• Output Type: Fixed
• Output Voltage: - 18 V
• Output Current: 1 A
• Line Regulation: 360 mV
• Load Regulation: 360 mV
• Dropout Voltage (max): 2 V
• Input Voltage Max: - 35 V
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: 0 C
• Package / Case: TO-220
• Mounting Style: Through Hole
• Output Voltage Tolerance: +/- 4 %
• Voltage Regulation Accuracy: 4 %
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

6.26
6.22
6.18
6.14
6.10
6.06
100
5.0
4.0
3.0
2.0
1.0
0.5
0.4
0.3
0.2
0.1
20
10
80
60
40
20
0
25
−25
10
q
No Heatsink
q
q
P
Figure 2. Worst Case Power Dissipation as a
HS
JC
JA
D
q
(max) = 15W
HS
= 15°C/W
= 5° C/W
= 65° C/W
Figure 6. Output Voltage as a Function
= 5°C/W
0
Function of Ambient Temperature
50
Figure 4. Ripple Rejection as a
100
T
T
25
of Junction Temperature
J
A
, JUNCTION TEMPERATURE (°C)
Function of Frequency
, AMBIENT TEMPERATURE (°C)
f, FREQUENCY (Hz)
50
75
1.0 k
75
100
100
Infinite Heatsink
V
V
I
O
in
D
= 20 mA
= −11 V
= −6.0 V
10 k
125
125
V
V
I
O
in
O
= 20 mA
= −11 V
= −6.0 V
150
http://onsemi.com
MC7900 Series
100 k
150
175
8
5.2
5.0
4.8
4.6
4.4
4.2
2.5
2.0
1.5
1.0
0.5
80
70
60
50
40
0
2.0
0
0
Figure 3. Peak Output Current as a Function
Figure 5. Ripple Rejection as a Function
4.0
3.0
|V
I
of Input−Output Differential Voltage
−V
Figure 7. Quiescent Current as a
6.0
O
25
6.0
| INPUT−OUTPUT VOLTAGE DIFFERENTIAL (V)
T
Function of Temperature
J
, JUNCTION TEMPERATURE (°C)
8.0
9.0
V
of Output Voltage
O
, OUTPUT VOLTAGE (V)
50
10
12
12
15
T
J
= +25°C
75
14
18
f = 120 Hz
I
DV
O
21
16
= 20 mA
in
= 1.0 V(RMS)
V
V
I
O
in
O
100
24
18
= 20 mA
= −11 V
= −6.0 V
27
20
125
30
22