NTE981 Integrated Circuit Positive 3 Terminal Voltage Regulator, 100mA
Description: The NTE981 is a positive 3-terminal voltage regulator available in a TO92 type package. With adequate 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 provided, 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 effective 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, instrumentation, 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 currents. Features: D Output Voltage Tolerances of 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, VOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8V Input Voltage, VIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30V Internal Power Dissipation (Note 1), PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Internally Limited Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0C to +70C Maximum Junction Temperature, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +125C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55C to +150C Lead Temperature (Soldering, 10 sec), TL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +260C Note 1. Thermal resistance is +180C/W junction-to-ambient with 0.4" leads from a P.C. board and +160C/W junction-to-ambient with 0.125" lead length to a P.C. board.
Electrical Characteristics: (TJ = 0 to +125C, VIN = 14V, IO = 40mA, CIN = 0.33F, CO = 0.1F, Note 2 unless otherwise specified)
Parameter Output Voltage (Note 4) Symbol VO Test Conditions TJ = +25C 1mA IO 70mA 1mA IO 70mA VMIN VIN VMAX Line Regulation VO TJ = +25C - Min 7.7 7.6 7.6 Typ 8.0 - - (7 VIN 20) 12 (11 VIN 23) - VO VO IQ IQ TJ = +25C TJ = +125C Quiescent Current Change 1mA IO 40mA VMIN VIN VMAX Output Noise Voltage Ripple Rejection Vn VIN VOUT Input Voltage Required to Maintain Line Regulation TJ = +25C 10.5 TJ = +25C, Note 3, f = 10Hz to 10kHz f = 120Hz TJ = +25C, 1mA IO 40mA TJ = +25C, 1mA IO 100mA Long Term Stability Quiescent Current 20 100 (10.5 VIN 23) Load Regulation - - - - - - - 8 25 20 3 - - - (11 VIN 23) - 43 60 57 (12 VIN 23) - - - - 40 80 - 5 4.7 0.1 1.0 85 mV V mV V mV mV mV 1000Hrs mA mA mA mA V V dB V V Max 8.3 8.4 8.4 Unit V V V
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 0.01F to limit high frequency noise bandwidth. Note 4. The temperature coefficient of VOUT is typically within 0.01% VO/C.
.135 (3.45) Min .210 (5.33) Max
Seating Plane
.500 (12.7) Min VOUT GND .100 (2.54) VIN
.021 (.445) Dia Max
.050 (1.27) .165 (4.2) Max .105 (2.67) Max .105 (2.67) Max .205 (5.2) Max
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