NTE1894 Integrated Circuit Hybrid Switching Voltage Regulator Absolute Maximum Ratings: (TA = +25°C unless otherwise specified) Peak Input Voltage, VIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500V Input Current, IIN Continuous . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10A Pulse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20A Power Dissipation (TC = +100°C), PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27W Junction Temperature, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +150°C Operating Case Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –20° to +125°C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –30° to +125°C Electrical Characteristics: (TA = +25°C unless otherwise specified) Parameter Set Output Voltage Symbol Test Conditions VO IIN = 7mA Output Voltage Min Typ Max Unit 41.3 41.8 42.3 V VIN = 100V, IO1 = 1.2A 115 ±2 V Line Regulation vs. Input Voltage RegLINE1 VIN = 85V to 132V, IO = 1.2A Initial Value ±2 V Line Regulation vs. Output Current RegLINE2 VIN = 100V, IO1 = 0.4 to 1.2A Initial Value ±2 V ±2 mV/°C Temperature Coefficient of Output Voltage TC = –20° to +100°C, IIN = 7mA Power Transistor Characteristics Collector–Emitter Saturation Voltage VCE(sat) IC = 5A, IB = 1A – – 0.5 V Base–Emitter Saturation Voltage VBE(sat) IC = 5A, IB = 1A – – 1.5 V mA Collector Cutoff Current ICEX VCE = 500V, VBE = –1.5V – – 1 DC Current Gain hFE VCE = 4V, IC = 1A 15 – 40 Switching Turn–On Time ton – – 10 µs tf – – 0.4 µs Switching Fall Time Thermal Resistance, Junction to Case RΘJC Top Part of Junction Stem .700 (17.7) Pin Connection Diagram (Front View) °C/W 1.8 .177 (4.5) .700 (17.7) .177 (4.5) .196 (5.0) 5 Soft Start 1.101 (527.9) 4 GND (E) 1 3 Input (C) 2 3 4 OR 5 1 2 3 4 5 1.691 (42.9) .133 (3.4) .276 (7.0) 2 Base Drive (B) .590 (15.0) 1 VOUT Sense (–) .237 (6.0) .100 (2.54) .150 (3.8) .500 (12.7) .100 (2.54) .150 (3.8) .500 (12.7) .177 (4.5)