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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 +70C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -65 to +150C Lead Temperature (During Soldering, 10 seconds), TL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +260C Typical Thermal Resistance, Junction-to-Ambient, RthJA . . . . . . . . . . . . . . . . . . . . . . . . . . . 140C/W Note 1. The maximum junction temperature of the NTE1930 is 100C. For operation at elevated temperatures, this device must be derated based on a thermal resistance of 138C/W junction to ambient, or 25C/W junction to case.
Electrical Characteristics (Note 2)
Parameter Input Voltage Range Output Voltage Range Input-Output Voltage Differential Load Regulation 0 IO 25mA, RSC = 0, TA = 25C, Note 3 0 IO 25mA, RSC = 0, TA = 70C, Note 3 0 IO 25mA, RSC = 0, TA = 0C, Note 3 Line Regulation Feedback Sense Voltage Standby Current Drain Current Limit Sense Voltage VIN = 30V, TA = 25C TA = 25C, RSC = 10, VOUT = 0V, (Note 4) TA = 25C 0C TA 70C Conditions Min 9 5 3.0 - - - - - 1.60 - - Typ - - - - - - - - 1.72 - 300 Max 40 37 30 0.2 0.5 0.5 0.03 0.1 1.80 2.5 - Units V V V % % % %/V %/V V mA 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 2k. 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 Booster Output Unregulated Input GND
1 2 3 4
8 7 6 5
Regulated Output Compensation Feedback Reference Bypass
8
5
.260 (6.6)
1
4
.390 (9.9) Max .155 (3.93)
.300 (7.62)
.100 (2.54) .300 (7.62)
.145 (3.68)

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