NTE1915 Integrated Circuit Negative 3 Terminal Voltage Regulator 12V, 1.5A Description: The NTE1915 is a 3 terminal negative regulator in a TO3 type package with a fixed output voltage of 12V and up to 1.5A load current capability. Where other voltages are required, the NTE1911 pro- vides an output voltage range of 1.2V to 37V. This device needs only one external component a compensation capacitor at the output, making it easy to apply. Worst case guarantees on output voltage deviation due to any combination of line, load, or temperature variation assure satisfactory system operation. Exceptional effort has been made to make the NTE1915 immune to onerload conditions. This regula- tor has current limiting which is independent of temperature, combined with thermal overload protec- tion. Internal current limiting protects against momentary faults while thermal shutdown prevents junction temperatures from exceeding safe limits during prolonged overloads. Although primarily intended for fixed output voltage applications, the NTE1915 may be programmed for higher output voltages with a single resistive divider. The low quiescent drain current of the device allows this technique to be used woth good regulation. Features: Preset Output Voltage Error Less Than 3% Preset Current Limit Internal Thermal Shutdown Operates with InputOutput Voltage Differential Down to 1V Excellent Ripple Rejection Low Temperature Drift Easily Adjustable to Higher Output Voltage Absolute Maximum Ratings: Input Voltage, V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35V IN InputOutput Voltage Differential, V V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30V I O Power Dissipation, P . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Internally Limited D Junction Temperature Range, T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to +125C J Storage Temperature Range, T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 to +150C stg Lead Temperature (During Soldering, 10sec), T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +300C L Thermal Resistance, JunctiontoCase, R . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3C/W thJC Thermal Resistance, JunctiontoAmbient, R . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35C/W thJAElectrical Characteristics: (0 T +125C, I = 1A, P = 20W unless otherwise specified) J O D Parameter Symbol Test Conditions Min Typ Max Unit Output Voltage V T = +25C, V = 17V, I = 5mA 12.4 12.0 11.6 V OUT J IN LOAD 14.5V V V , 5mA I I , P P 12.6 12.0 11.4 V IN MAX LOAD O D Input Voltage V 32 14 V IN Line Regulation Reg T = +25C, I = 5mA, V V V 4 20 mV LINE J LOAD MIN IN MAX Ripple Rejection RR f = 120Hz 56 80 dB Load Regulation Reg T = +25C, V = 17V, 5mA I I , Note 1 30 80 mV LOAD J IN LOAD O Quiesecnt Current I V V V 2 4 mA B MIN IN MAX Quiescent Current Change I T = +25C, V V V 0.1 0.4 mA B J MIN IN MAX 5mA I I 0.1 0.4 mA LOAD O Output Noise Voltage V T = +25C, C = 1 F, I = 5mA, V = 17V, 400 V n A L L IN 10Hz f 100kHz Long Term Stability 12 120 mV Note 1. Regulation is measured at constant junction temperature. Changes in output voltage due to heating effects must be taken into account separately. To ensure constant junction tem- perature, low duty cycle, pulse testing is used. The NTE1915 does have low thermal feed- back, improving line and load regulation. On all other tests, even though power dissipation is internally limited, electrical specifications apply only up to P . D .135 (3.45) Max .350 (8.89) .875 (22.2) Dia Max Seating Plane .312 (7.93) Min .040 (1.02) V 1.187 (30.16) OUT .215 (5.45) .665 (16.9) .156 (3.96) Dia (2 Holes) .430 (10.92) .188 (4.8) R Max .525 (13.35) R Max GND V /Case IN