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| NTE7090 Variable Output Voltage Regulator (Dual Tracking Type) Description: The NTE7090 is a dual tracking, variable output voltage regulator housed in a 8-pin SIP. The output voltage can be adjusted over a wide range from 3 to 30V by adjusting the value of the voltage setting external resistors. By adjusting the resistance of the external balance setting resistors the positive/negative output voltage ratio can also be set freely. Again by attaching power transistors high current gains can be achieved making the device suitable for use in the power supplies of a wide variety of equipment. Features: D High Input voltage . . . . . . . . . . . . . . . . . . . . . . VI = 35V D Wide Range of Output Voltage . . . . VO = 3 to 30V D Low output noise voltage . . . . . . VNO = 12Vrms(typ) D Built-in current limiting and thermal shutdown circuit D The output voltage rise time constant of the coefficients can be adjusted by the value of the external capacitor. D Capability of operation control by the external control signal (Pin 8). Application: Dual voltage power supplies for stereo preamplifiers, for the power supplies of other equipment, including operational amplifiers. Recommended Operating Conditions: Supply Voltage Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 to 35V Rated Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20V Absolute Maximum Ratings: (TA = +25C unless otherwise specified) Input Voltage, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35V Load Current, IL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30mA Input-Output Voltage Difference, VI-VO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32V Power Dissipation, PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 800mW Operating Ambient Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -20 to +75C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -56 to +125C Electrical Characteristics: (TA = +25C, VI = 20V, VO = 15V, IL = 10mA unless otherwise specified) Parameter Input Voltage Output Voltage Reference Voltage Minimum Input-Output Voltage Difference Dual Voltage Tracking Input Regulation Load Regulation Bias Current Temperature Coefficient of Output Voltage Ripple Rejection Output Noise Voltage Output Cut-Off Voltage Symbol VI VO VREF VI-VO VO Regin RegL IS TCVO RR VHO VO(off) VI = 18 to 30V IL = 0 to 20mA IL = 0 TA = 0 to 75C, VO = 3 to 30V f = 120Hz f = 20Hz to 100kHz (between the output terminal and ground) VI = 10V Pin Connection Diagram (Front View) 8 Output Control 7 (+) Input 6 (+) Output 5 Voltage Adjustment 4 (-) Input 3 (-) Output 2 Balance Adjustment 1 GND Test Conditions R2 = 1.5 to 55k (Between Pin5 and Pin1) Min 8 3 1.66 - - - - - - - - - Typ - - 1.8 2.5 - 0.02 0.02 1.3 0.01 68 12 - Max 35 30 1.95 3 1 0.1 0.1 3.0 - - - 0.1 Unit V V V V % %/V % mA %/C dB Vrms V .768 (19.52) Max .118 (3.0) Max 1 8 .264 (6.72) Max .165 (4.2) Min .100 (2.54) Typ .700 (17.78) |
Price & Availability of NTE7090
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