NTE NTE1979

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 for use in power circuits with current capacity up to 100mA. 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, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –35V
Power Dissipation (Note 1), PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 650mW
Operating Ambient Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –20° to +80°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55° to +150°C
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
VO
TJ = +25°C
–7.68
–8.0
–8.32
V
Output Voltage Tolerance
VO
VI = –11V to –23V, IO = 1mA to 70mA,
TJ = 0° to +125°C
–7.6
–
–8.4
V
VI = –10V to –24V, TJ = +25°C
–
–
160
mV
VI = –11V to –21V, TJ = +25°C
–
–
80
mV
IO = 1mA to 100mA, TJ = +25°C
–
15
80
mV
IO = 1mA to 40mA, TJ = +25°C
–
7
40
mA
Line Regulation
Load Regulation
REGIN
REGL
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):
Parameter
(TA = +25°C, VI = –14V, IO = 40mA, Ci = 2µF, Co = 1µF
unless otherwise specified)
Symbol
Min
Typ
Max
Unit
–
3
5
mA
∆IBIAS(IN) VI = –11V to –23V, TJ = +25°C
–
–
0.5
mA
∆IBIAS(L)
IO = 1mA to 40mA, TJ = +25°C
–
–
0.1
mA
Output Noise Voltage
Vno
f = 10Hz to 100kHz, TA = +25°C
–
52
–
µV
Ripple Rejection Ratio
RR
VI = –11V to –21V, f = 120Hz, TA = +25°C
54
–
–
dB
Bias Current
IBIAS
Input Bias Current Fluctuation
Test Conditions
TJ = +25°C
Minimum I/O Voltage Difference
VDIF(min)
TJ = +25°C
–
0.8
–
V
Output Short Circuit Current
IO(Short)
VI = –35V, TJ = +25°C
–
200
–
mA
Output Voltage Temperature
Coefficient
∆VO/TA
IO = 5mA, TJ = 0° to +125°C
–
–0.6
–
mV/°C
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)
Max
Seating Plane
.500
(12.7)
Min
.021 (.445) Dia Max
Common
VOUT
VIN
.100 (2.54)
.050 (1.27)
.105 (2.67) Max
.205 (5.2) Max
.165 (4.2) Max
.105 (2.67) Max