NTE1918
3 Terminal Positive Voltage Regulator
15V, 3A
Description:
The NTE1918 is a positive 3–terminal voltage regulator in a TO3 type package capable of driving
loads in excess of 3A. This device employs internal current limiting, thermal shutdown, and safe–area
compensation.
Although designed primarily as a fixed voltage regulator, the NTE1918 can be used with external com-
ponents to obtain adjustable voltages and currents.
Features:
D Output Current in Excess of 3A
D Power Dissipation: 30W
D Internal Thermal Overload Protection
D Output Transistor Safe Area Protection
D Internal Short Circuit Current Limit
D No External Components Required
Absolute Maximum Ratings:
Input Voltage , V
IN
40V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Dissipation (T
A
= +25°C, Note 1), P
D
Internally Limited. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Dissipation (T
C
= +25°C, Note 1), P
D
Internally Limited. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Junction Temperature Range, T
J
0° to +150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage Temperature Range, T
stg
–65° to +150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Thermal Resistance, Junction–to–Case, R
thJC
2.5°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Thermal Resistance, Junction–to–Ambient, R
thJA
35°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Note 1. Although power dissipation is internally limited, specifications apply only for P
O
≤ 30W.
Electrical Characteristics:
(0° ≤ T
J
≤ +125°C, V
IN
= 20V, I
O
= 3Aunless otherwise specified)
Parameter Symbol Test Conditions Min Typ Max Unit
Output Voltage V
O
T
J
= +25°C, 5mA ≤ I
O
≤ 3A 14.4 15.0 15.6 V
5mA ≤ I
O
≤ 2A, 17.5V ≤ V
IN
≤ 30V 14.25 15.00 15.75 V
Line Regulation Reg
line
T
J
= +25°C, 20V ≤ V
IN
≤ 26V, Note 2 – 7.5 55 mV
18V ≤ V
IN
≤ 30V, I
O
= 1A, Note 2 – 7.5 55 mV
Load Regulation Reg
load
T
J
= +25°C, 5mA ≤ I
O
≤ 3A, Note 2 – 10 30 mV
5mA ≤ I
O
≤ 3A, Note 2 – 15 80 mV
Note 2. Load and line regulation are specified at constant junction temperature. Change in V
O
due
to heating effects must be taken into account separately. Pulse testing with low duty cycle is
used.
