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 provides 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 regulator has current limiting which is independent of temperature, combined with thermal overload protection. 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: D Preset Output Voltage Error Less Than ±3% D Preset Current Limit D Internal Thermal Shutdown D Operates with Input–Output Voltage Differential Down to 1V D Excellent Ripple Rejection D Low Temperature Drift D Easily Adjustable to Higher Output Voltage Absolute Maximum Ratings: Input Voltage, VIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –35V Input–Output Voltage Differential, VI–VO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30V Power Dissipation, PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Internally Limited Junction Temperature Range, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0° to +125°C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65° to +150°C Lead Temperature (During Soldering, 10sec), TL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +300°C Thermal Resistance, Junction–to–Case, RthJC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3°C/W Thermal Resistance, Junction–to–Ambient, RthJA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35°C/W Electrical Characteristics: (0° ≤ TJ ≤ +125°C, IO = 1A, PD = 20W unless otherwise specified) Parameter Symbol Output Voltage VOUT Input Voltage Test Conditions Min RR V 14.5V ≤ VIN ≤ VMAX, 5mA ≤ ILOAD ≤ IO, P ≤ PD –12.6 –12.0 –11.4 V f = 120Hz RegLOAD TJ = +25°C, VIN = 17V, 5mA ≤ ILOAD ≤ IO, Note 1 Load Regulation Unit –12.4 –12.0 –11.6 RegLINE TJ = +25°C, ILOAD = 5mA, VMIN ≤ VIN ≤ VMAX Ripple Rejection Max TJ = +25°C, VIN = 17V, ILOAD = 5mA VIN Line Regulation Typ –32 – –14 V – 4 20 mV 56 80 – dB – 30 80 mV Quiesecnt Current IB VMIN ≤ VIN ≤ VMAX – 2 4 mA Quiescent Current Change ∆IB TJ = +25°C, VMIN ≤ VIN ≤ VMAX – 0.1 0.4 mA 5mA ≤ ILOAD ≤ IO – 0.1 0.4 mA TA = +25°C, CL = 1µF, IL = 5mA, VIN = 17V, 10Hz ≤ f ≤ 100kHz – 400 – µV – 12 120 mV Output Noise Voltage Vn Long Term Stability 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 temperature, low duty cycle, pulse testing is used. The NTE1915 does have low thermal feedback, improving line and load regulation. On all other tests, even though power dissipation is internally limited, electrical specifications apply only up to PD. .135 (3.45) Max .350 (8.89) .875 (22.2) Dia Max Seating Plane .312 (7.93) Min VOUT .040 (1.02) 1.187 (30.16) .665 (16.9) .215 (5.45) .156 (3.96) Dia (2 Holes) .430 (10.92) .188 (4.8) R Max GND .525 (13.35) R Max VIN/Case