NTE1914
3 Terminal Positive Voltage Regulator
12V, 1A
Description:
The NTE1914 is a positive 3terminal voltage regulator in a TO3 type package suitable for numerous
applications requiring up to 1A. One of these is local on card regulation, eliminating the distribution
problems associated with single point regulation. Other applications include; logic systems, instru-
mentation, HiFi, and other solid state lectronic equipment. Although designed primarily as a fixed volt-
age regulator, the NTE1914 can be used with external components to obtain adjustable voltages and
currents.
Features:
D
Output Current in Excess of 1A
D
Internal Thermal Overload Protection
D
No External Components Required
D
Output Transistor Safe Area Protection
D
Internal Short Circuit Current Limit
Absolute Maximum Ratings:
Input Voltage , V
IN
35V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Dissipation (Note 1), P
D
Internally Limited
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maximum Junction Temperature, T
J
+150
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Junction Temperature Range, T
A
0
to +70
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage Temperature Range, T
stg
65
to +150
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lead Temperature (During Soldering, 10 sec), T
L
+300
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Note 1. Thermal resistance is typically +4
C/W junctiontocase and +35
C/W junctiontoambient.
Electrical Characteristics: (0
T
J
+125
C, V
O
= 12V, V
IN
= 19V, Note 2 unless otherwise
specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
Output Voltage
V
O
T
A
= +25
C, 5mA
I
O
1A
11.5
12.0
12.5
V
5mA
I
O
1A, 14.5V
V
IN
27V, P
15W
11.4
12.0
12.6
V
Note 2. All characteristics are measured with a 0.22
F capacitor across the input and a 0.1
F capac-
itor across the output. All characteristics except noise voltage and ripple rejection ratio are
measured using pulse tecniques (t
w
10ms, duty cycle
5%). Output voltage changes due
to changes in internal temperature must be taken into account separately.
Electrical Characteristics (Cont'd): (0
T
J
+125
C, V
O
= 12V, V
IN
= 19V, Note 2 unless
otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
Line Regulation
Reg
line
T
J
= +25
C
14.5V
V
IN
30V, I
O
= 500mA
4
120
mV
14.6V
V
IN
27V, I
O
1A
120
mV
15V
V
IN
27V, I
O
= 500mA
120
mV
16V
V
IN
22V, I
O
1A
60
mV
Load Regulation
Reg
load
T
J
= +25
C
5mA
I
O
1.5A
12
120
mV
250mA
I
O
750mA
60
mV
5mA
I
O
1A
120
mV
Quiescent Current
I
Q
T
J
= +25
C, I
O
1A
8.0
mA
I
O
1A
8.5
mA
Quiescent Current Change
I
Q
5mA
I
O
1A
0.5
mA
T
A
= +25
C, I
O
1A, 14.8V
V
IN
27V
1.0
mA
I
O
500mA, 14.5V
V
IN
30V
0.5
mA
Output Noise Voltage
V
n
T
A
= +25
C, f = 10Hz to 100kHz
75
V
Ripple Rejection Ratio
RR
T
A
= +25
C, 15V
V
IN
25V, f = 120Hz, I
O
1A
55
72
dB
15V
V
IN
25V, f = 120Hz, I
O
500mA
55
dB
Dropout Voltage
T
J
= +25
C, I
O
= 1A
2.0
V
Peak Output Current
I
O
max
T
J
= +25
C
2.4
A
Average Temperature
Coefficient of Output
Voltage
I
O
= 5mA
1.5
mV/
C
Note 2. All characteristics are measured with a 0.22
F capacitor across the input and a 0.1
F capac-
itor across the output. All characteristics except noise voltage and ripple rejection ratio are
measured using pulse tecniques (t
w
10ms, duty cycle
5%). Output voltage changes due
to changes in internal temperature must be taken into account separately.
1.187 (30.16)
.875 (22.2)
Dia Max
.665
(16.9)
.430
(10.92)
Seating Plane
.040 (1.02)
.312 (7.93) Min
.135 (3.45) Max
.350 (8.89)
V
OUT
Common/Case
V
IN
.215 (5.45)
.525 (13.35) R Max
.156 (3.96) Dia
(2 Holes)
.188 (4.8) R Max
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