NTE1930 Integrated Circuit Positive Adjustable Voltage Regulator, 5V to 37V, 25mA Description: The NTE1928 is an adjustable positive voltage regulator in an 8–Lead DIP type package that features fast response to both load and line transients, freedom from oscillations with varying resistive and reactive loads, and the ability to start reliabity on any load within rating. This device also contains a biasing circuitry that removes any minimum load current requirement and at the same time reduces standby current drain, permitting higher voltage operation. Features: D Output Voltage Adjustable from 5V to 37V D Output Currents in Excess of 10A Possible by Adding External Transistors D Load Regulation Better than 0.1%, Full Load with Current Limiting D DC Line Regulation Guaranteed at 0.03%/V D Ripple Rejection on 0.01%V Absolute Maximum Ratings: Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40V Input–Output Differential . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40V Power Dissipation (Note 1), PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 400mW Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0° to +70°C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65° to +150°C Lead Temperature (During Soldering, 10 seconds), TL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +260°C Typical Thermal Resistance, Junction–to–Ambient, RthJA . . . . . . . . . . . . . . . . . . . . . . . . . . . 140°C/W Note 1. The maximum junction temperature of the NTE1930 is 100°C. For operation at elevated temperatures, this device must be derated based on a thermal resistance of 138°C/W junction to ambient, or 25°C/W junction to case. Electrical Characteristics (Note 2) Parameter Conditions Min Typ Max Units Input Voltage Range 9 – 40 V Output Voltage Range 5 – 37 V 3.0 – 30 V 0 ≤ IO ≤ 25mA, RSC = 0Ω, TA = 25°C, Note 3 – – 0.2 % 0 ≤ IO ≤ 25mA, RSC = 0Ω, TA = 70°C, Note 3 – – 0.5 % 0 ≤ IO ≤ 25mA, RSC = 0Ω, TA = 0°C, Note 3 – – 0.5 % TA = 25°C – – 0.03 %/V 0°C ≤ TA ≤ 70°C – – 0.1 %/V 1.60 1.72 1.80 V Input–Output Voltage Differential Load Regulation Line Regulation Feedback Sense Voltage Standby Current Drain VIN = 30V, TA = 25°C – – 2.5 mA Current Limit Sense Voltage TA = 25°C, RSC = 10Ω, VOUT = 0V, (Note 4) – 300 – mV Note 2. Unless otherwise specified, these specifications apply for temperatures within the operating temperature range, for input and output voltages within the range given, and for a divider impedance seen by the feedback terminal of 2kΩ. Load and line regulation specifications are for a constant junction temperature. Temperature drift effects must be taken into account separately when the unit is operating under conditions of high dissipation. Note 3. The output currents given, as well as the load regulation, can be increased by the addition of external transistors. The improvement factor will be roughly equal to the composite current gain of the added transistors. Note 4. With no external pass transistor. Pin Connection Diagram Current Limit 1 8 Regulated Output Booster Output 2 7 Compensation Unregulated Input 3 6 Feedback GND 4 5 Reference Bypass 8 5 .260 (6.6) 1 4 .390 (9.9) Max .300 (7.62) .155 (3.93) .100 (2.54) .145 (3.68) .300 (7.62)