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
Output Voltage
Symbol
V
O
Reg
line
Reg
load
Test Conditions
T
J
= +25°C, 5mA
≤
I
O
≤
3A
5mA
≤
I
O
≤
2A, 17.5V
≤
V
IN
≤
30V
Line Regulation
T
J
= +25°C, 20V
≤
V
IN
≤
26V, Note 2
18V
≤
V
IN
≤
30V, I
O
= 1A, Note 2
Load Regulation
T
J
= +25°C, 5mA
≤
I
O
≤
3A, Note 2
5mA
≤
I
O
≤
3A, Note 2
Min
14.4
14.25
–
–
–
–
Typ
15.0
15.00
7.5
7.5
10
15
Max
15.6
15.75
55
55
30
80
Unit
V
V
mV
mV
mV
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.
NTE [ NTE ELECTRONICS ]
