NTE1952 Integrated Circuit Positive 3 Terminal Voltage Regulator, Low Dropout Voltage, 8V, 1A Description: The NTE1952 positive voltage regulator features the ability to source 1A of output current with a drop- out voltage of typically 0.5V and a maximum of 1V over the entire temperature range. Furthermore, a quiescent current reduction circuit has been included which reduces the ground current when the differential between the input voltage and the output voltage exceeds approximately 3V. The quies- cent current with 1A of output current and an inputoutput differential of 5V is therefore only 30mA. High quiescent currents only exist when the regulator is in the dropout mode (V V 3V). IN OUT Features: Dropout Voltage: 0.5V (Typ) I = 1A O Output Current in Excess of 1A Reverse Battery Protection Internal Short Circuit Current Limit Absolute Maximum Ratings: (T = +25C unless otherwise specified) A Input Voltage, V I Survival Voltage (100ms) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60V Operational Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26V Internal Power Dissipation (Note 1), P . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Internally Limited D maximum Junction Temperature, T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +150C J Operating Temperature Range, T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 to +125C A Storage Junction Temperature Range, T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 to +150C stg Lead Temperature (During Soldering, 10sec max), T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +230C L Note 1. Thermal resistance without a heatsink for junctiontocase temperature is 3C/W. Thermal resistance casetoambient is 50C/WElectrical Characteristics: (V = 13V, I = 1A, C = 22 F, C = 0.1 F, T = +25C IN O OUT O J unless otherwise specified) Parameter Symbol Test Conditions Min Typ Max Unit Output Voltage V 5mA I 1A 7.76 8.00 8.24 V OUT O Line Regulation Reg 10V V 26V, I = 5 mA 20 80 mV line IN O Load Regulation Reg 50mA I 1A 55 50 mV load O Output Impedance Z 100mADC and 20mArms, f = 120Hz 55 M O o Quiescent Current 10V V 26V, I = 5 mA 10 15 mA IN O V = 13V, I = 1A 30 45 mA IN O Output Noise Voltage V 10Hz 100kHz, I = 5mA 240 V n O rms Ripple Rejection RR f = 120Hz, 1V , I = 100mA 54 66 dB o rms I Long Term Stability S 32 mV/1000Hr Dropout Voltage V V I = 1A 0.5 0.8 V IN O O I = 100mA 110 150 mA O Short Circuit Current I 1.6 1.9 A SC Maximum Line Transient V 9V, R = 100 , T 100ms 60 75 V O O Maximum Operational 26 31 V dc Input Voltage Reverse Polarity Input R = 100 15 30 V O Voltage DC Reverse Polarity Input T 100ms, R = 100 50 75 V O Voltage Transient .420 (10.67) Max .110 (2.79) GND .147 .500 (3.75) (12.7) Dia Max Max .250 (6.35) Max .500 (12.7) Min .070 (1.78) Max V V IN OUT GND .100 (2.54)