NTE1908 Integrated Circuit Positive 3 Terminal Voltage Regulator, 24V, 100mA Description: The NTE1908 voltage regulator is an inexpensive, easy–to–use device in a TO92 type package suitable for a multitude of applications that require a regulated supply of up to 100mA. This device features internal current limiting and thermal shutdown making the NTE1908 remarkably rugged. No external components are required in many applications. The NTE1908 offers a substantial performance advantage over the traditional zener diode–resistor combination, as output impedance and quiescent current are substantially reduced. Features: D Low Cost D ±5% Tolerance D Internal Short–Circuit Current Limiting D Internal Thermal Overload Protection D No External Components Required D Complementary to NTE1909 Negative Regulator Absolute Maximum Ratings: (TA = +25°C unless otherwise specified) Input Voltage, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40V Operating Junction Temperature Range, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0° to +150°C Storage Junction Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65° to +150°C Electrical Characteristics: (VI = 33V, IO = 40mA, CI = 0.33µF, CO = 0.1µF, 0° < TJ < +125°C unless otherwise specified) Parameter Output Voltage Line Regulation Symbol VO Regline Test Conditions Min Typ Max Unit TJ = +25°C 22.1 24.0 25.9 V 28V ≤ VI ≤ 38V, 1mA ≤ IO ≤ 40mA 21.6 – 26.4 V 28V ≤ VI ≤ 33V, 1mA ≤ IO ≤ 70mA 21.6 – 26.4 V 27.5V ≤ VI ≤ 38V – 35 350 mV 28V ≤ VI ≤ 80V – 30 300 mV TJ = +25°C, IO = 40mA Electrical Characteristics (Cont’d): (VI = 33V, IO = 40mA, CI = 0.33µF, CO = 0.1µF, 0° < TJ < +125°C unless otherwise specified) Parameter Load Regulation Input Bias Current Input Bias Current Change Output Noise Voltage Long–Term Stability Ripple Rejection Input–Output Voltage Differential Symbol Regload IIB ∆IIB Vn Test Conditions Min Typ Max Unit 1mA ≤ IO ≤ 100mA – 40 200 mV 1mA ≤ IO ≤ 40mA – 20 100 mV TJ = +25°C – 3.1 6.5 mA TJ = +125°C – – 6.0 mA 28V ≤ VI ≤ 38V – – 1.5 mA 1mA ≤ IO ≤ 40mA – – 0.2 mA TA = +25°C, 10Hz ≤ f ≤ 100kHz – 200 – µV – 56 – mV/1kHrs IO = 40mA, f = 120Hz, 29V ≤ VI ≤ 35V, TJ = +25°C 30 43 – dB TJ = +25°C – 1.7 – V TJ = +25°C ∆VO/∆t RR VI/VO .135 (3.45) Min .210 (5.33) Max Seating Plane .500 (12.7) Min .021 (.445) Dia Max VIN VOUT GND .100 (2.54) .050 (1.27) .105 (2.67) Max .205 (5.2) Max .165 (4.2) Max .105 (2.67) Max