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SPX2954M3-5-0 Datasheet(PDF) 11 Page - Sipex Corporation |
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SPX2954M3-5-0 Datasheet(HTML) 11 Page - Sipex Corporation |
11 / 17 page 11 Date: 12/9/05 SPX2954, 250mA Low Dropout Voltage Regulator © Copyright 2005 Sipex Corporation APPLICATIONS HINTS Figure 7. Open Circuit Detector for 4mA to 20mA Current Loop EXTERNAL CIRCUIT PROTECTED FROM OVER TEMPERATURE (V+ GOES OFF WHEN TEMP > 125) OR RELAY 8.2K TEMP SENSOR GND V OUT FB SD +V IN +V IN 10K 5 DEGREE SHUTDOWN FLAG ERROR _______ 3 5 8 4 7 1 AUX SHUTDOW INPUT OFF ON Ω AS35 + - SPX2954 Ω. . 330kΩ IN V OUT FB 6 8 1 4.7µF + 7 27kΩ SPX2954 V TAP GND SENSE 4 2 UNREGULATED INPUT 2N5432 5V OUTPUT LOAD 50mA TO 300 mA (2) 360K 0.1µF V OUT MIN VOLTAGE = 4V +V IN 8 1 FB 7 1N4001 20mA 1N457 4.7mA +5V OUTPUT 2 GND 4 4 SPX2954 Ω Figure 6. System Over Temperature Protection Figure 8. 300mA Regulator with 0.75V |
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