Voltage Regulator. NTE1925 Datasheet

NTE1925 Regulator. Datasheet pdf. Equivalent

Part NTE1925
Description 3 Terminal Negative Voltage Regulator
Feature NTE1925 3 Terminal Negative Voltage Regulator –18V, 1.5A Description: The NTE1925 is a negative 3–te.
Manufacture NTE
Datasheet
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NTE1925
NTE1925
3 Terminal Negative Voltage Regulator
–18V, 1.5A
Description:
The NTE1925 is a negative 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 NTE1925 remarkably rugged.
Although designed primarily as a fixed voltage regulator, this device can be used with external compo-
nents 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: (TA = +25°C unless otherwise specified)
Input Voltage, VIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –40V
Internal Power Dissipation (TA = +25°C), PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Internally Limited
Derate Above 25°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22.2mW/°C
Internal Power Dissipation (TC = +25°C), PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Internally Limited
Derate Above 25°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182mW/°C
Operating Junction Temperature Range, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0° to +150°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65° to +150°C
Thermal Resistance, Junction–to–Case, RthJC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5°C/W
Thermal Resistance, Junction–to–Ambient, RthJA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45°C/W
Electrical Characteristics: (0° ≤ TJ +125°C, VIN = –33V, IO = 0.5Aunless otherwise specified)
Parameter
Symbol
Test Conditions
Min Typ Max Unit
Output Voltage
Line Regulation
Load Regulation
VO
Regline
Regload
TJ = +25°C
5mA IO 1A, –38V VIN –27V, PO 15W
TJ = +25°C, –38V VIN –27V, Note 1
TJ = +25°C, –36V VIN –30V, Note 1
TJ = +25°C, 5mA IO 1.5A, Note 1
TJ = +25°C, 250mA IO 750mA, Note 1
–23 –24 –25
–22.8 –24.0 –25.2
– 118 480
– 70 240
– 150 480
– 85 240
V
V
mV
mV
mV
mV
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.



NTE1925
Electrical Characteristics (Contd): (0° ≤ TJ +125°C, VIN = 27V, IO = 0.5Aunless otherwise
specified)
Parameter
Input Bias Current
Input Bias Current Change
Output Noise Voltage
Ripple Rejection Ratio
Dropout Voltage
Peak Output Current
Average Temperature
Coefficient of Output
Voltage
Symbol
Test Conditions
IB
IB
Vn
RR
IOmax
TJ = +25°C
38V VIN 27V
5mA IO 1.5A
TA = +25°C, f = 10Hz to 100kHz
IO = 20mA, f = 120Hz
TJ = +25°C, IO = 1A
TJ = +25°C
IO = 5mA
Min Typ Max Unit
4.5 8.0 mA
– – 1.0 mA
– – 0.5 mA
170
µV
56
dB
2.0
V
1.3 2.5 3.3 A
– –1.0 mV/°C
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.
.350 (8.89)
.135 (3.45) Max
.875 (22.2)
Dia Max
Seating Plane
.312 (7.93) Min
VOUT
.215 (5.45)
.430
(10.92)
.040 (1.02)
1.187 (30.16)
.665
(16.9)
.156 (3.96) Dia
(2 Holes)
.188 (4.8) R Max
GND
.525 (13.35) R Max
VIN/Case







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