Voltage Regulator. NTE1942 Datasheet

NTE1942 Regulator. Datasheet pdf. Equivalent

Part NTE1942
Description Integrated Circuit Positive Adjustable Voltage Regulator
Feature NTE1942 Integrated Circuit Positive Adjustable Voltage Regulator, 2.85V to 36V, 2A Description: The .
Manufacture NTE
Datasheet
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NTE1942
NTE1942
Integrated Circuit
Positive Adjustable Voltage Regulator,
2.85V to 36V, 2A
Description:
The NTE1942 is an integrated circuit for voltage and current programmable regulation. Current limit-
ing, power limiting, thermal shutdown, and input overvoltage protection (up to 60V) make the
NTE1942 virtually blowout proof. The NTE1942 can be used to replace fixed voltage regulators when
high output voltage precision is required.
Features:
D Adjustable Output Current Up to 2A (Guaranteed Up to TJ = +150°C)
D Adjustable Output Voltage Down to 2.85V
D Input Overvoltage Protection (Up to 60V, 10ms)
D Short Circuit Protection
D Output Transistor S.O.A. Protection
D Thermal Overload Protection
D Low Bias Current On Regulation Terminal
D Low Standby Current Drain
Absolute Maximum Ratings:
DC Input Voltage, Vi . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40V
Peak Input Voltage (10ms), Vi . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60V
In–Out Operating Differential Voltage, Vi–o . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32V
Output Current, Io . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . internally limited
Power Dissipation, Ptot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . internally limited
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55° to +150°C
Operating Junction Temperature Range, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –25° to +150°C
Maximum Thermal Resistance, Junction–to–Case, RthJC . . . . . . . . . . . . . . . . . . . . . . . . . . . . +3°C/W
Maximum Thermal Resistance, Junction–to–Ambient, RthJA . . . . . . . . . . . . . . . . . . . . . . . . +50°C/W



NTE1942
Electrical Characteristics: (TJ = 25° to +150°C unless otherwise specified)
Parameter
Symbol
Test Conditions
Min Typ Max Unit
GENERAL
Quiescent Drain Current
(Pin3)
Id Vi = 20V, TJ = +25°C
4.2 9.2 mA
Output Noise Voltage
eN
VOLTAGE REGULATION LOOP
Vo = Vref, Io = 10mA, B = 1MHz
80
µV
Reference Voltage (Pin4)
Average Temperature
Coefficient of
Reference Voltage
Vref
Vref
T
Vi = 20V, Io = 10mA, TJ = +25°C
Vi = 20V, TJ = 25° to +125°C
Io = 10mA TJ = +125° to +150°C
2.65 2.77 2.85 V
– –0.25 mV/°C
– –1.5 mV/°C
Output Voltage Range
Voltage Load Regulation
Supply Voltage Rejection
Ratio
Vo
Vo
Vo
SVR
Io = 10mA, TJ = +25°C
Io =2.0A, Note 1
Io =1.5A, Note 1
Vo = 5V, Io = 500mA, Vi = 100Vpp,
f = 100Hx, Note 2
2.85
0.15
1.0
60 70
36
1.0
0.5
V
%
%
dB
Line Regulation
Output Impedance
Vi Vo = 5V, Io = 500mA, Vi = 8V to 18V, 54 70
Vo TJ = +25°C
Zo Vi = 10V, Vo = Vref, Io = 0.5A,
f = 100Hz
1.5 x 103
dB
Dropout Voltage between
Pin1 and Pin5
Bias Current at Pin4
Average Temperature
Coefficient (Pin4)
I4
I4
TDI4
Io
=
1.5A,
Vo
Vo
2%
TJ = +25°C
2.0 2.5 V
3 10 µA
– –0.5 %/°C
CURRENT REGULATION LOOP
Current Limit Sense
Voltage between
Pin5 and Pin2
VSC Vi = 10V, Vo = Vref, TJ = +25°C
0.45
V
Average Temperature
Coefficient of VSC
Current Load Regulation
Short Circuit Current
Io Vi = 10V, Io = 0.5A
Io Vo = 3V Io = 1.0A
Io = 1.5A
Isc Vi Vo = 14V,
Pin2 and Pin5 short circuited
0.03 %/°C
1.4
1.0
0.9
2.0 2.5 3.6
%
%
%
A
Note 1. A load step of 2A can be applied provided that the inputoutput differential voltage is lower
than 20V.
Note 2. The same performance can be maintained at higher output levels if a bypassing capacitor
is provided between Pin2 and Pin4.







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