Voltage Regulator. NTE1955 Datasheet

NTE1955 Regulator. Datasheet pdf. Equivalent

Part NTE1955
Description Integrated Circuit Positive 3 Terminal Voltage Regulator
Feature NTE1955 Integrated Circuit Positive 3 Terminal Voltage Regulator, Low Dropout Voltage, 15V, 1A Descr.
Manufacture NTE
Datasheet
Download NTE1955 Datasheet




NTE1955
NTE1955
Integrated Circuit
Positive 3 Terminal Voltage Regulator,
Low Dropout Voltage, 15V, 1A
Description:
The NTE1955 positive voltage regulator features the ability to source 1A of output current with a drop-
out voltage of typically 0.5V and a maximum of 1V over the entire temperature range. Furthermore,
a quiescent current reduction circuit has been included which reduces the ground current when the
differential between the input voltage and the output voltage exceeds approximately 3V. The quies-
cent current with 1A of output current and an input–output differential of 5V is therefore only 30mA.
High quiescent currents only exist when the regulator is in the dropout mode (VIN – VOUT 3V).
Features:
D Dropout Voltage: 0.5V (Typ) @ IO = 1A
D Output Current in Excess of 1A
D Reverse Battery Protection
D Internal Short Circuit Current Limit
Absolute Maximum Ratings: (TA = +25°C unless otherwise specified)
Input Voltage, VI
Survival Voltage (100ms) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60V
Operational Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26V
Internal Power Dissipation (Note 1), PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Internally Limited
maximum Junction Temperature, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +150°C
Operating Temperature Range, TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –40° to +125°C
Storage Junction Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65° to +150°C
Lead Temperature (During Soldering, 10sec max), TL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +230°C
Note 1. Thermal resistance without a heatsink for junction–to–case temperature is 3°C/W. Thermal
resistance case–to–ambient is 50°C/W



NTE1955
Electrical Characteristics: (VIN = 20V, IO = 1A, COUT = 22µF, CO = 0.1µF, TJ = +25°C
unless otherwise specified)
Parameter
Symbol
Test Conditions
Min Typ Max Unit
Output Voltage
Line Regulation
Load Regulation
Output Impedance
Quiescent Current
Output Noise Voltage
VOUT
Regline
Regload
ZO
Vn
5mA IO 1A
17V VIN 26V, IO = 5 mA
50mA IO 1A
100mADC and 20mArms, fo = 120Hz
17V VIN 26V, IO = 5 mA
VIN = 20V, IO = 1A
10Hz 100kHz, IO = 5mA
14.55 15.00 15.45
20 150
55 150
100
10 15
30 45
450
V
mV
mV
M
mA
mA
µVrms
Ripple Rejection
Long Term Stability
RR fo = 120Hz, 1Vrms, II = 100mA
S
52 64
60
dB
mV/1000Hr
Dropout Voltage
VINVO IO = 1A
IO = 100mA
0.5 0.8
110 150
V
mA
Short Circuit Current
Maximum Line Transient
Maximum Operational
Input Voltage
ISC
VO 16V, RO = 100, T 100ms
1.6 1.9
60 75
26 31
A
V
Vdc
Reverse Polarity Input
Voltage DC
RO = 100
15 30
V
Reverse Polarity Input
Voltage Transient
T 100ms, RO = 100
50 75
V
.147
(3.75)
Dia
Max
.420 (10.67)
Max
GND
.110 (2.79)
.500
(12.7)
Max
.070 (1.78) Max
VIN
.100 (2.54)
.250 (6.35)
Max
.500
(12.7)
Min
VOUT
GND







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