NTE981 Integrated Circuit Positive 3 Terminal Voltage Regulator, 100mA Description: The NTE981 is a positive 3terminal 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: Output Voltage Tolerances of 5% over the Temperature Range Output Current of 100mA Internal Thermal Overload Protection Output Transistor Safe Area Protection Internal Short Circuit Current Limit Absolute Maximum Ratings: Output Voltage, V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8V OUT Input Voltage, V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30V IN Internal Power Dissipation (Note 1), P . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Internally Limited D Operating Temperature Range, T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0C to +70C opr Maximum Junction Temperature, T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +125C J Storage Temperature Range, T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55C to +150C stg Lead Temperature (Soldering, 10 sec), T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +260C L Note 1. Thermal resistance is +180C/W junctiontoambient with 0.4 leads from a P.C. board and +160C/W junctiontoambient with 0.125 lead length to a P.C. board.Electrical Characteristics: (T = 0 to +125C, V = 14V, I = 40mA, C = 0.33 F, C = 0.1 F, J IN O IN O Note 2 unless otherwise specified) Parameter Symbol Test Conditions Min Typ Max Unit V T = +25C 7.7 8.0 8.3 V Output Voltage O J (Note 4) 1mA I 70mA 7.6 8.4 V O 1mA I 70mA 7.6 8.4 V O V V V (7 V 20) MIN IN MAX IN Line Regulation V T = +25C 12 85 mV O J (11 V 23) V IN 20 100 mV (10.5 V 23) V IN Load Regulation V T = +25C, 1mA I 40mA 8 40 mV O J O T = +25C, 1mA I 100mA 25 80 mV J O Long Term Stability V 20 mV O 1000Hrs Quiescent Current I T = +25C 3 5 mA Q J T = +125C 4.7 mA J I 1mA I 40mA 0.1 mA Quiescent Current Change Q O V V V 1.0 mA MIN IN MAX (11 V 23) V IN Output Noise Voltage V T = +25C, Note 3, f = 10Hz to 10kHz 60 V n J Ripple Rejection f = 120Hz 43 57 dB V ININ V (12 V 23) V OUT IN Input Voltage Required to T = +25C 10.5 V J Maintain Line Regulation Note 2. The maximum steady state usable output current and input voltage are very dependent on the heat sinking and/or lead length of the package. The data above represent pulse test conditions with junction temperatures as indicated at the initiation of test. Note 3. Recommended minimum load capacitance of 0.01 F to limit high frequency noise band- width. Note 4. The temperature coefficient of V is typically within 0.01% V /C. OUT O