MC7918CT Fairchild Semiconductor, MC7918CT Datasheet - Page 2

• 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

Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
*This device series contains ESD protection and exceeds the following tests:
1. Load and line regulation are specified at constant junction temperature. Changes in V
*Tlow = −40°C for MC7905B and Tlow = 0°C for MC7905C.
MAXIMUM RATINGS
MC7905B, MC7905C
ELECTRICAL CHARACTERISTICS
Input Voltage (−5.0 V ≥ V
Input Voltage
Power Dissipation
Case 221A
Case 936 (D
Storage Junction Temperature Range
Junction Temperature
Output Voltage (T
Line Regulation (Note 1)
Load Regulation, T
Output Voltage
Input Bias Current (T
Input Bias Current Change
Output Noise Voltage (T
Ripple Rejection (I
Dropout Voltage
Average Temperature Coefficient of Output Voltage
Human Body Model 2000 V per MIL_STD_883, Method 3015
Machine Model Method 200 V
separately. Pulse testing with low duty cycle is used.
T
Thermal Resistance, Junction−to−Ambient
Thermal Resistance, Junction−to−Case
T
Thermal Resistance, Junction−to−Ambient
Thermal Resistance, Junction−to−Case
(T
(T
5.0 mA ≤ I
250 mA ≤ I
−7.0 Vdc ≥ V
−7.0 Vdc ≥ V
5.0 mA ≤ I
I
I
O
O
A
A
J
J
−7.0 Vdc ≥ V
−8.0 Vdc ≥ V
−7.0 Vdc ≥ V
−8.0 Vdc ≥ V
= 1.0 A, T
= 5.0 mA, Tlow* ≤ T
= +25°C
= +25°C
= +25°C, I
= +25°C, I
O
O
2
O
PAK)
(24 V)
≤ 1.5 A
≤ 1.5 A
J
≤ 750 mA
I
I
O
O
≥ − 20 Vdc, 5.0 mA ≤ I
≥ − 25 Vdc
= +25°C
I
I
J
I
I
= 100 mA)
= 500 mA)
O
≥ − 25 Vdc
≥ − 25 Vdc
≥ −12 Vdc
≥ −12 Vdc
J
= +25°C)
= +25°C (Note 1)
= 20 mA, f = 120 Hz)
J
= +25°C)
(T
A
J
= +25°C, 10 Hz ≤ f ≤ 100 kHz)
A
O
≤ +125°C
= +25°C, unless otherwise noted.)
≥ −18 V)
Characteristics
O
Rating
≤ 1.0 A, P ≤ 15 W
(V
I
= −10 V, I
O
= 500 mA, Tlow* < T
http://onsemi.com
MC7900 Series
2
J
< +125°C, unless otherwise noted.)
Symbol
DV
Reg
Reg
O
V
DI
RR
V
V
I
due to heating effects must be taken into account
I
V
−V
O
IB
O
O
load
IB
n
/DT
line
Symbol
O
T
q
q
q
q
P
P
T
V
stg
JA
JC
JA
JC
D
D
J
I
−4.75
−4.8
Min
−
−
−
−
−
−
−
−
−
−
−
−
−
Internally Limited
Internally Limited
−65 to +150
−5.0
−1.0
Typ
Value
7.0
2.0
8.0
4.0
4.3
1.3
+150
35
40
70
11
−35
−40
−
−
−
5.0
5.0
65
70
−5.25
Max
−5.2
100
100
8.0
1.3
0.5
50
25
50
50
−
−
−
−
°C/W
°C/W
°C/W
°C/W
Unit
Vdc
mV/°C
°C
°C
W
W
Unit
Vdc
Vdc
Vdc
mV
mV
mA
mA
dB
mV