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LM317E3 Folha de dados(PDF) 8 Page - Cystech Electonics Corp. |
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LM317E3 Folha de dados(HTML) 8 Page - Cystech Electonics Corp. |
8 / 10 page CYStech Electronics Corp. Spec. No. : C513E3 Issued Date : 2003.04.09 Revised Date :2005.05.17 Page No. : 8/10 LM317E3 CYStek Product Specification Application Circuits + + -10V -10V Q2 2N5640 1N4001 D4 D3 Q1 2N3822 D2 D1 1N4001 1N4001 1N4001 1.0k 5.0k RSC D6* 1N4002 240 D5 10µF 1.0µF Vout Vout 2 Vin 2 Vout 1N4001 Tantalum Vin 1 Vin 32V to 40 V 0.1µF Adjust 1 Current Limit Adjust PL317 PL317 (1) (2) Adjust 2 Iout Voltage Adjust Diodes D1 and D2 and transistor Q2 are added to * D6 protects both LM317's during an input short circuit. allow adjustment of output voltage to 0V. Output Range:0 Vo 25V ≦≦ 0Io1.5A ≦≦ Vss* 2N5640 D2 D1 1N4001 1N4001 100 R1 Vout Vin +25V Adjust PL317 Iout 1.25 R2 *To provide current limiting of Io to the system groung, the source of the FET must be tied to a negative voltage below -1.25V. Fig 7. “Laboratory” Power Supply with Adjustable Current Limit and Output Voltage R1=Vref/(Iomax+IDSS) R2≤Vref/IDSS Vo<BVDSS+1.25V+Vss ILmin-IDSS<Io<1.5A As shown 0<Io<1.0A Fig 8. Adjustable Current Limiter + PL317 Adjust 720 MPS2222 1.0k TTL Control 1.0µF 120 Vout D1* 1N4002 Vin *D1 protects the device during an input short circuit. Fig 9. 5.0V Electronic Shutdown Regulator LM317 (1) LM317 (2) LM317 LM317 |
Nº de peça semelhante - LM317E3 |
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Descrição semelhante - LM317E3 |
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