NTE NTE1951

NTE1951
Integrated Circuit
Positive 3 Terminal Voltage Regulator,
Low Dropout Voltage, 5V, 1A
Description:
The NTE1951 positive voltage regulator features the ability to source 1A of output current with a dropout 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 quiescent 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
Electrical Characteristics: (VIN = 10V, IO = 1A, COUT = 22µF, CO = 0.1µF, TJ = +25°C
unless otherwise specified)
Parameter
Symbol
Test Conditions
5mA ≤ IO ≤ 1A
Min
Typ
Max
Unit
4.85
5.00
5.15
V
Output Voltage
VOUT
Line Regulation
Regline
7V ≥ VIN ≥ 26V, IO = 5 mA
–
20
50
mV
Load Regulation
Regload
50mA ≤ IO ≤ 1A
–
35
50
mV
100mADC and 20mArms, fo = 120Hz
–
35
–
MΩ
7V ≥ VIN ≥ 26V, IO = 5 mA
–
10
15
mA
VIN = 10V, IO = 1A
–
30
45
mA
Output Impedance
ZO
Quiescent Current
Output Noise Voltage
Vn
10Hz – 100kHz, IO = 5mA
–
150
–
µVrms
Ripple Rejection
RR
fo = 120Hz, 1Vrms, II = 100mA
60
72
–
dB
–
20
–
mV/1000Hr
IO = 1A
–
0.5
0.8
V
IO = 100mA
–
110
150
mA
1.6
1.9
–
A
60
75
–
V
26
31
–
Vdc
Long Term Stability
Dropout Voltage
Short Circuit Current
Maximum Line Transient
S
VIN–VO
ISC
VO ≤ 6V, RO = 100Ω, T ≤ 100ms
Maximum Operational
Input Voltage
Reverse Polarity Input
Voltage DC
RO = 100Ω
–15
–30
–
V
Reverse Polarity Input
Voltage Transient
T ≤ 100ms, RO = 100Ω
–50
–75
–
V
.420 (10.67)
Max
.110 (2.79)
GND
.147
(3.75)
Dia
Max
.500
(12.7)
Max
.250 (6.35)
Max
.500
(12.7)
Min
.070 (1.78) Max
VIN
VOUT
.100 (2.54)
GND