NTE NTE1924 Datasheet
NTE1924
Integrated Circuit
Positive 3 Terminal Voltage Regulator,
24V, 1.5A
Description:
The NTE1924 is a monolithic voltage regulator integrated circuit in a TO3 type package designed for
use in applications requiring a well regulated positive output voltage. Outstanding features include
full power usage up to 1.5A of load current, internal current limiting, thermal shutdown, and safe area
protection on the chip, providing protection of the series pass Darlington, under most operating conditions. A low noise, temperature stable band gap reference is the key design factor insuring excellent
temperature regulation. This, coupled to a very low output impedance, insures superior performance
and load regulation.
Features:
D Guaranteed Power Dissipation: 15W @ TC = +87.5°C
D Guaranteed Thermal Resistance, Junction–to–Case: 2.5°C/W
D Guaranteed Input–Output Differential: +2.4V
D Low Noise, Band Gap Reference
D Remote Sense Capability
D Sample Power Cycled Burn–in
Absolute Maximum Ratings:
Input Voltage (Note 1), V
Power Dissipation (Note 2), P
Operating Junction Temperature Range, T
Storage Temperature Range, T
Thermal Resistance, Junction–to–Case, R
IN
D
J
stg
thJC
Lead Temperature (During Soldering, 60sec max), T
Note 1. Short circuit protection is only assured to V
voltages approaching V
Note 2. For operation above T
max, r egulator m ay r equire t he r emoval o f t he i nput v oltage t o r estart.
IN
= +87.5°C, derate @ 400mW/°C.
C
Internally Limited. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
–55° to +150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
–65° to +150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.5°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
L
max. In case of short circuit with input–output
IN
+300°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
40V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Characteristics: (TJ = +25°C unless otherwise specified)
Parameter Symbol Test Conditions Min Typ Max Unit
Output Voltage V
Input–Output Differential VIN–VOIO = 1.5A, TJ = 0° to +125°C 2.4 – – V
Line Regulation REG
Load Regulation REG
Quiescent Current I
Quiescent Current Line I
Quiescent Current Load I
Current Limit I
Temperature Coefficient T
Output Noise Voltage V
Ripple Attenuation R
Power Dissipation P
Q
Q (LINE)VIN
Q (LOAD)VIN
LIM
VIN = 27V to 34V, IO = 10mA to 1.5A, Note 3 23.05 24.0 25.05 V
O
LINEVIN
LOADVIN
C
N
A
D
= 27V to 39V, IO = 1.5A, Note 3 – – 1.5 % V
= 29V, IO = 10mA to 1.5A, Note 3 – – 0.6 % V
VIN = 27V, IO = 10mA – – 18 mA
= 27V to 34V, IO = 10mA – – 5 mA
= 27V, IO = 10mA to 1.5A – – 5 mA
VIN = 29V, Note 3 – – 5.2 A
VIN = 27V, IO = 0.1A, TJ = 0° to +125°C – – 0.02 % VO/°C
VIN = 27V, IO = 0.1A, TJ = 0° to +125°C, Note 4 – – 10 µV
VIN = 29V, IO = 1A, TJ = 0° to +125°C, Note 5 60 – – dB
VIN – V
= 0° to +125°C
T
J
(2.4V to 10.0V), IO = 10mA to 1.5A,
OUT
– – 15 W
rms
O
O
/V
Note 3. Low duty cycle pulse testing with Kelvin connectors required. Die temperature changes
must be accounted for separately.
Note 4. BW = 10Hz to 100kHz.
Note 5. Ripple attenuation is specified for a 1Vrms, 120Hz, input ripple. Ripple attenuation is mini-
mum of 60dB at 5V output and is 1dB less for each volt increase in the output voltage.
.350 (8.89)
.215 (5.45)
.430
(10.92)
.135 (3.45) Max
V
OUT
.875 (22.2)
Dia Max
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
IN
.525 (13.35) R Max
Common/CaseV
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