NTE959

NTE959 Linear Integrated Circuit Voltage Regulator, Negative, –18V, 1A Description: The NTE959 voltage regulator employs current limiting, thermal shutdown, and safe–area compensation which makes it remarkably rugged under most operating conditions. With adequate heat– sinking they can deliver output currents in excess of 1.0 amperes. Features: D No External Components Required D Internal Thermal Overload Protection D Internal Short–Circuit Current Limiting D Output Transistor Safe–Area Compensation Absolute Maximum Ratings: (TA = +25°C unless otherwise specified) Input Voltage, VIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –35V Internal Power Dissipation, PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Internally Limited Derate Above +25°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15.4mW/°C Internal Power Dissipation (TC = +25°C), PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Internally Limited Derate Above +75°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200mW/°C Maximum Junction Temperature Range, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55° to +150°C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65° to +150°C Thermal Resistance, Junction–to–Ambient, RthJA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65°C/W Thermal Resistance, Junction–to–Case, RthJC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5°C/W Electrical Characteristics: (VIN = –27V, IO = 500mA, TJ = 0° to +125°C unless otherwise specified) Parameter Output Voltage Line Regulation Load Regulation Symbol VO RegLine RegLoad Test Conditions Min Typ Max Unit TJ = +25°C –17.3 –18.0 –18.7 V 5mA ≤ IO ≤ 1A, PO ≤ 15W, –33V ≤ VIN ≤ –21V –17.1 –18.0 –18.9 V mV TJ = +25°C, Note 1 –33V ≤ VIN ≤ –21V – 25 360 –30V ≤ VIN ≤ –24V – 10 180 TJ = +25°C, Note 1 5mA ≤ IO ≤ 1.5A – 55 360 250mA ≤ IO ≤ 750mA – 22 180 mV Electrical Characteristics: (VIN = –27V, IO = 500mA, TJ = 0° to +125°C unless otherwise specified) Parameter Quiescent Current Quiescent Current Change Symbol IB ∆IB Ripple Rejection RR Dropout Voltage VIN – VO Test Conditions Min Typ Max Unit TJ = +25°C – 4.5 8.0 mA –33V ≤ VIN ≤ –21V – – 1.0 mA 5mA ≤ IO ≤ 1A – – 0.5 32V ≤ VIN ≤ 21V, f = 120Hz – 57 – dB TJ = +25°C, IO = 1A – 2.0 – V Output Noise Voltage Vn TA = +25°C, 10Hz ≤ f ≤ 100kHz – 10 – µV/VO Output Resistance rO f = 1kHz – 19 – mΩ Short–Circuit Current Limit Isc TA = +25°C, VIN = 35V – 0.2 – A TJ = +25°C – 2.2 – A – –1.1 – mV/°C Peak Output Current Average Temperature Coefficient of Output Voltage Imax TCVO Note 1. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account spearately. Pulse testing with low duty cycle is used. .420 (10.67) Max .110 (2.79) .147 (3.75) Dia Max .500 (12.7) Max .250 (6.35) Max .500 (12.7) Min .070 (1.78) Max GND .100 (2.54) VOUT VIN/Tab