NTE NTE1920 Datasheet
NTE1920
3 Terminal Positive Voltage Regulator
18V, 1.5A
Description:
The NTE1920 is a positive 3–terminal voltage regulator in a TO3 type package suitable for numerous
applications including local, on–card regulation requiring up to 1.5A. This device features thermal
shutdown and current limiting making the NTE1920 remarkably rugged.
Although designed primarily as a fixed voltage regulator, this device can be used with external components to obtain adjustable voltages and currents.
Features:
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
Internal Power Dissipation (T
(TA = +25°C unless otherwise specified)
= +25°C), P
A
D
35V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Internally Limited. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Derate Above 25°C 22.5mW/°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Internal Power Dissipation (T
= +25°C), P
C
D
Internally Limited. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Derate Above 25°C 182mW/°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Junction Temperature Range, T
Storage Temperature Range, T
stg
Thermal Resistance, Junction–to–Case, R
Electrical Characteristics:
Parameter Symbol Test Conditions Min Typ Max Unit
Output Voltage V
Line Regulation Reg
Load Regulation Reg
(–55° ≤ TJ ≤ +150°C, VIN = 27V, IO = 0.5Aunless otherwise specified)
TJ = +25°C 17.3 18.0 18.7 V
O
5mA ≤ IO ≤ 1A, 22V ≤ VIN ≤ 33V, PO ≤ 15W 17.1 18.0 18.9 V
lineTJ
loadTJ
= +25°C, 21V ≤ VIN ≤ 33V, Note 1 – 7 180 mV
TJ = +25°C, 24V ≤ VIN ≤ 30V, Note 1 – 4 90 mV
= +25°C, 5mA ≤ IO ≤ 1.5A, Note 1 – 35 180 mV
TJ = +25°C, 250mA ≤ IO ≤ 750mA, Note 1 – 12 90 mV
J
thJC
–55° to +150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
–65° to +150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.5°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Note 1. Load and line regulation are specified at constant junction temperature. Change in VO due
to heating effects must be taken into account separately. Pulse testing with low duty cycle is
used.
Electrical Characteristics (Cont’d): (–55° ≤ TJ ≤ +125°C, VIN = 27V, IO = 0.5Aunless otherwise
specified)
Parameter Symbol Test Conditions Min Typ Max Unit
Quiescent Current I
Quiescent Current Change I
TJ = +25°C – 3.5 6.0 mA
Q
22V ≤ VIN ≤ 33V – 0.3 0.8 mA
Q
5mA ≤ IO ≤ 1A – 0.04 0.50 mA
Output Noise Voltage V
Output Resistance r
Short Circuit Current Limit I
sc
TA = +25°C, f = 10Hz to 100kHz – 10 40 µV
n
f = 1kHz – 19 – mΩ
O
TA = +25°C, VIN = 35V – 0.2 1.2 A
Ripple Rejection Ratio RR 22V ≤ VIN ≤ 33V, f = 120Hz 59 65 – dB
Dropout Voltage TJ = +25°C, IO = 1A – 2.0 2.5 V
Peak Output Current IOmax TJ = +25°C 1.3 2.5 3.3 A
Average Temperature
– ±2.3 – mV/°C
Coefficient of Output
Voltage
Note 2. Load and line regulation are specified at constant junction temperature. Change in VO due
to heating effects must be taken into account separately. Pulse testing with low duty cycle is
used.
.135 (3.45) Max
.350 (8.89)
.875 (22.2)
Dia Max
.215 (5.45)
.430
(10.92)
V
OUT
Seating Plane
.040 (1.02).312 (7.93) Min
1.187 (30.16)
.665
(16.9)
.156 (3.96) Dia
(2 Holes)
.188 (4.8) R Max
.525 (13.35) R Max
V
IN
Common/Case
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