NTE1895 Integrated Circuit Hybrid Switching Voltage Regulator Absolute Maximum Ratings: Maximum Peak Input Voltage, VIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 550V Input Current, IIN Continuous . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10A Pulse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20A Maximum Output Current (VO = 115V), IO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.4A Power Dissipation (TC = +100°C), PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27W Power Transistor Junction Temperature, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +150°C Operating Temperature Range (Case Temperature, Note 1), Topr . . . . . . . . . . . . . . . –20° to +125°C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –30° to +125°C Note 1. Recommended Operating Temperature: Topr = +100°C Electrical Characteristics: (TA = +25°C unless otherwise specified) Parameter Symbol Test Conditions Min Typ Max Unit Output Voltage VO VIN = 120V, IO = 1.1A, Note 2 108.5 110.0 111.5 V Set Output Voltage VO IIN = 7mA 41.3 42.3 V 41.8 Line Regulation RegLINE VIN = 90V to 145V, IO = 1.1A Initial Value ±1V V Load Regulation RegLOAD VIN = 120V, IO = 0.6A to 1.1A Initial Value ±2V V Output Voltage Temperature Coefficient Saturation Voltage TC = –20° to +100°C, IIN = 7mA – ±2 – mV/°C VCE(sat) IC = 5A, IB = 1A – – 0.5 V VBE(sat) IC = 5A, IB = 1A – – 1.5 V Kt DC Current Gain hFE IC = 1A, VCE = 4V 15 – 40 Collector Cutoff Current ICEX VCE = 550V, VBE = 1.5V – – 1 A Power Transistor Thermal Resistance RΘJC Between Junction and Case – 1.8 – °C/W ts – – 12.0 µs tf – – 0.7 µs Switching Time Note 2. Output voltage is determined by the ratio between the sensing winding “D” and the secondary winding “S”. Pin Connection Diagram (Front View) 5 VOUT Adjust 4 GND 3 Input 2 Base Drive 1 Voltage Sensing .700 (17.7) .177 (4.5) .700 (17.7) .177 (4.5) .196 (5.0) 1.101 (527.9) 1 2 3 4 OR 5 1 2 3 4 5 1.691 (42.9) .133 (3.4) .276 (7.0) .590 (15.0) .237 (6.0) .100 (2.54) .150 (3.8) .500 (12.7) .100 (2.54) .150 (3.8) .500 (12.7) .177 (4.5)