NTE981
Integrated Circuit
Positive 3 Terminal Voltage Regulator, 100mA
Description:
The NTE981 is a positive 3鈥搕erminal voltage regulator available in a TO92 type package. With ade-
quate heat sinking this device can deliver 100mA output current. Current limiting is included to limit
peak output current to safe value. Safe area protection for the output transistors is provided to limit
internal power dissipation. If internal power dissipation becomes too high for the heat sinking pro-
vided, the thermal shutdown circuit takes over preventing the IC from overheating.
When used as a zener diode/resistor combination replacement, the NTE981 usually results in an ef-
fective output impedance improvement of two orders of magnitude, and lower quiescent current.
These regulators can provide local on card regulation, eliminating the distribution problems
associated with single point regulation. Typical applications include use in logic systems, instrumen-
tation, HiFi, and other solid state electronic equipment. Although designed primarily as fixed voltage
regulator this device can be used with external components to obtain adjustment voltages and cur-
rents.
Features:
D
Output Voltage Tolerances of
鹵5%
over the Temperature Range
D
Output Current of 100mA
D
Internal Thermal Overload Protection
D
Output Transistor Safe Area Protection
D
Internal Short Circuit Current Limit
Absolute Maximum Ratings:
Output Voltage, V
OUT
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8V
Input Voltage, V
IN
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30V
Internal Power Dissipation (Note 1), P
D
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Internally Limited
Operating Temperature Range, T
opr
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0擄C to +70擄C
Maximum Junction Temperature, T
J
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +125擄C
Storage Temperature Range, T
stg
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 鈥?5擄C to +150擄C
Lead Temperature (Soldering, 10 sec), T
L
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +260擄C
Note 1. Thermal resistance is +180擄C/W junction鈥搕o鈥揳mbient with 0.4鈥?leads from a P.C. board and
+160擄C/W junction鈥搕o鈥揳mbient with 0.125鈥?lead length to a P.C. board.
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