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| NTE1928 Integrated Circuit Positive Adjustable Voltage Regulator, 4.5V to 40V, 45mA Description The NTE1928 is an adjustable positive voltage regulator 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 4.5V to 40V 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, VIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40V Input-Output Differential, VI-O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40V Power Dissipation (Note 1), PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 800mW Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0 to +70C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -65 to +150C Thermal Resistance, Junction-to-Ambient, RthJA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 230C/W Lead Temperature (During Soldering, 10sec), TL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +300C Note 1. The maximum junction temperature of the NTE1928 is +85C. For operation at elevated temperatures, this device must be derated based on a thermal resistance of 230C/W junction to ambient, or 25C/W junction-to-case. Peak dissipations to 1W are allowable providing the dissipation rating is not exceeded with the power average over a two second internal. Electrical Characteristics: (Note 2) Parameter Input Voltage Range Output Voltage Range Input-Output Voltage Differential Load Regulation (Note 3) RSC = 10, TA = +25C RSC = 10, TA = +70C RSC = 10, TA = 0C Line Regulation Temperature Stability Feedback Sense Voltage Output Noise Voltage Standby Current Drain Current Limit Sense Voltage Long Term Stability Ripple rejection CREF = 10F, f = 120HZ - CREF = 0 CREF = 0.1F VIN = 40V TA = +25C, RSC = 10, VOUT = 0V, (Note 4) VIN - VOUT 5V, TA = +25C VIN - VOUT 5V, TA = +25C TA = 0C TA TA = +70C Conditions Min 8.5 4.5 3.0 - - - - - - 1.63 - - - 225 Typ - - - 0.02 0.03 0.03 0.025 0.015 0.3 1.7 0.005 0.002 0.8 300 0.1 0.003 - Max 40 30 30 0.05 0.1 0.1 0.06 0.03 1.0 1.81 - - 2.0 375 Units V V V % % % %/V %/V % V % % mA mV % %/V 0 IO 12mA 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 (Top View) Regulated Output 8 Current Limit 1 7 Compensation Shutdown Booster Output 2 6 Feedback Unregulated Input 3 4 GND 5 Reference Bypass .370 (9.39) Dia Max .335 (8.52) Dia Max .177 (4.5) Max .492 (12.5) Min .018 (0.45) Dia Typ 2 1 8 45 7 3 4 5 6 .200 (5.06) Dia .032 (0.82) |
Price & Availability of NTE1928
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