NTE NTE1979 Datasheet
NTE1979
Integrated Circuit
Negative 3 Terminal Voltage Regulator,
–8V, 100mA
Description:
The NTE1979 is a 3–terminal fixed negative output voltage regulatgor in a TO92 type package
designed f or u se i n p ower c ircui ts w ith c urrent c apacity u p t o 1 00mA . Stabilized fixed output voltage
is obtained from unstable DC input voltage without the use of external components.
Features:
D No External Components
D Output Current in Excess of 100mA
D Built–In Short–Circuit Current Limiting
D Built–In Thermal Overload Protection
Absolute Maximum Ratings: (TA = +25°C unless otherwise specified)
Input Voltage, V
Power Dissipation (Note 1), P
I
D
Operating Ambient Temperature Range, T
Storage Temperature Range, T
stg
opr
–20° to +80°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
–55° to +150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
–35V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
650mW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Note 1. When TJ exceeds +150°C, the internal circuit cuts off the output.
Electrical Characteristics: (TA = +25°C, VI = –14V, IO = 40mA, Ci = 2µF, Co = 1µF unless
otherwise specified)
Parameter Symbol Test Conditions Min Typ Max Unit
Output Voltage V
Output Voltage Tolerance V
Line Regulation REG
Load Regulation REGLIO = 1mA to 100mA, TJ = +25°C – 15 80 mV
TJ = +25°C –7.68 –8.0 –8.32 V
O
VI = –11V to –23V, IO = 1mA to 70mA,
O
TJ = 0° to +125°C
= –10V to –24V, TJ = +25°C – – 160 mV
INVI
VI = –11V to –21V, TJ = +25°C – – 80 mV
IO = 1mA to 40mA, TJ = +25°C – 7 40 mA
–7.6 – –8.4 V
Note 2. The specified condition TJ = +25°C means that the test should be carried out with the test
time so short (within 10ms) that the drift in characteristic value due to the rise in chip junction
temperature can be ignored.
Electrical Characteristics (Cont’d): (TA = +25°C, VI = –14V, IO = 40mA, Ci = 2µF, Co = 1µF
unless otherwise specified)
Parameter Symbol Test Conditions Min Typ Max Unit
Bias Current I
Input Bias Current Fluctuation ∆I
Output Noise Voltage V
Ripple Rejection Ratio RR VI = –11V to –21V, f = 120Hz, TA = +2 5°C 54 – – dB
Minimum I/O Voltage Difference V
Output Short Circuit Current I
Output Voltage Temperature
Coefficient
BIAS
BIAS(IN)VI
∆I
BIAS(L)IO
DIF(min)TJ
O(Short)VI
∆VO/TAIO = 5mA, TJ = 0° to +125°C – –0.6 – mV/°C
TJ = +25°C – 3 5 mA
= –11V to –23V, TJ = +25°C – – 0.5 mA
= 1mA to 40mA, TJ = +25°C – – 0.1 mA
f = 10Hz to 100kHz, TA = +25°C – 52 – µV
no
= +25°C – 0.8 – V
= –35V, TJ = +25°C – 200 – mA
Note 2. The specified condition TJ = +25°C means that the test should be carried out with the test
time so short (within 10ms) that the drift in characteristic value due to the rise in chip junction
temperature can be ignored.
.135 (3.45) Min
.210
(5.33)
Seating Plane
Max
.500
(12.7)
Min
Common
.100 (2.54)
.105 (2.67) Max
.205 (5.2) Max
V
IN
V
.021 (.445) Dia Max
OUT
.050 (1.27)
.165 (4.2) Max
.105 (2.67) Max
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