SPX2945 SIPEX [Sipex Corporation], SPX2945 Datasheet
SPX2945
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SPX2945 Summary of contents
Page 1
... The error flag output feature is used as power-on reset for warning of a low output voltage, due to a falling voltage input of batteries. Another feature is the logic-compatible shutdown input which enables the regulator to be switched on and off. The SPX2945 is offered in 3-pin TO-220 package, SO-8 (same pin out as SPX2951), SOT-223, surface mount 3-Pin TO-252, 3-Pin TO-263 packages and 5-Pin TO-263. ...
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... Reference Voltage Over Temperature Feedback Pin Bias Current Reference Voltage Temp. Coefficient Rev. B Date:01/20/04 SPX2945 400mA Low Dropout Voltage Regulator with Shutdown ABSOLUTE MAXIMUM RATINGS Feedback Input Voltage ................................................ -1.5V to +26V Shutdown Input Voltage ................................................ -0.3V to +26V Error Comparator Output .............................................. -0.3V to +26V ESD Rating ............................................................................ 2kV Min ...
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... Note 3: Regulation is measured at constant junction temperature, using pulse testing with a low duty cycle. Changes in output voltage due to heating effects are covered under the specification for thermal regulation. Note 4: Line regulation for the SPX2945 is tested at 150°C for I by design. Note 5: Dropout voltage is defined as the input to output differential at which the output voltage drops 100 mV below its nominal value measured at 1V differential at very low values of programmed output voltage, the minimum input supply voltage ...
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... FROM CMOS OR TTL SHUTDOWN External Capacitors The stability of the SPX2945 requires a 2.2µF or greater capacitor between output and ground. Oscillation could occur without this capacitor. Most types of tantalum or aluminum electrolytic works fine here. For operations of below -25°C solid tantalum is recommended since the many aluminum types have electrolytes that freeze at about -30° ...
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... One way is to reduce the regulator bandwidth by increasing the size of the output capacitor. This is the only way that noise can be reduced on the 3 lead SPX2945 but is relatively inefficient, as increasing the ca- pacitor from 1µF to 220µF only decreases the noise from 430µV to 160µV Vrms for a 100kHz bandwidth at 5V output ...
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... -C- 3 PLCS e .010 TERM 4 BACK VIEW A-A Rev. B Date:01/20/04 SPX2945 400mA Low Dropout Voltage Regulator with Shutdown -A- - NOTES 1. Refer To Applicable Symbol List. 2. Dimensions And Tolerancing Per Ansi Y14.5m - 1982. ...
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... MIN (3.81 MIN) 0.410 (10.41) 0.100 ± 0.010 (2.540 ± 0.254) 0.032 ± 0.005 (0.813 ± 0.127) SPX2945 400mA Low Dropout Voltage Regulator with Shutdown 7 PACKAGE: 3 PIN TO-220 0.180 ± 0.005 (4.572 ± 0.127) 0.050 ± 0.002 (1.270 ± 0.051) SEATING PLANE 1.020 ± ...
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... SPX2945 400mA Low Dropout Voltage Regulator with Shutdown 8 PACKAGE: 5 PIN TO-263 0.176 ± 0.005 (4.470 ± 0.127) 0.050 ± 0.002 (1.270 ± 0.051) 0.100 ± 0.010 ± (2.540 0.254) 0.074) 0° 8° ...
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... NOM 0.181 NOM 0.264 0.0040 0.248 0.0008 Rev. B Date:01/20/04 SPX2945 400mA Low Dropout Voltage Regulator with Shutdown PACKAGE: 3 PIN SOT-223 0.146 0.295 0.130 0.264 0.041 0.033 0.067 0.028 16°C 10°C 10°C Max 16°C 0.033 10°C 0.025 9 0.014 0.010 ...
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... E/2 1 INDEX AREA (D/2 X E1/2) A TOP VIEW b WITH PLATING c BASE METAL CONTACT AREA SIDE VIEW Rev. B Date:01/20/04 SPX2945 400mA Low Dropout Voltage Regulator with Shutdown E1 E E1/2 b Seating Plane SEATING PLANE 10 PACKAGE: 8 PIN NSOIC SEE VIEW C Ø1 L2 Ø VIEW C DIMENSIONS 8 Pin NSOIC ...
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... Sipex Corporation reserves the right to make changes to any products described herein. Sipex does not assume any liability arising out of the application or use of any product or circuit described herein; neither does it convey any license under its patent rights nor the rights of others. Rev. B Date:01/20/04 SPX2945 400mA Low Dropout Voltage Regulator with Shutdown ...