partfinder:vreg
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partfinder:vreg [2012/04/08 17:07] gregham [LM2931-XX series] |
partfinder:vreg [2012/04/08 17:38] gregham [Switching regulators] |
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| * Current: 800mA (assuming that the power dissipation isnt too high for the package) | * Current: 800mA (assuming that the power dissipation isnt too high for the package) | ||
| - | The following table has links for the 1117-3.3 and 5.0 only, since those are the most popular. [[http://www.st.com/internet/com/TECHNICAL_RESOURCES/TECHNICAL_LITERATURE/DATASHEET/CD00002116.pdf|1117 Datasheet]] | + | The following table has links for the 1117-3.3 and 5.0 only, since those are the most popular. [[http://www.st.com/internet/com/TECHNICAL_RESOURCES/TECHNICAL_LITERATURE/DATASHEET/CD00000544.pdf|1117 Datasheet]] |
| ^ Image ^ Package ^ Vout @ Iout ^ Distributors ^ | ^ Image ^ Package ^ Vout @ Iout ^ Distributors ^ | ||
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| | " | TO-220 | 5.0V @ 0.8 amp | [[http://mouser.com/ProductDetail/STMicroelectronics/LD1117V50C/?qs=sGAEpiMZZMsGz1a6aV8DcCwRipvt0X3PXDVXWaOVWAU%3d|Mouser]] [[http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=AP1117T50L-UDI-ND|Digikey]] | | | " | TO-220 | 5.0V @ 0.8 amp | [[http://mouser.com/ProductDetail/STMicroelectronics/LD1117V50C/?qs=sGAEpiMZZMsGz1a6aV8DcCwRipvt0X3PXDVXWaOVWAU%3d|Mouser]] [[http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=AP1117T50L-UDI-ND|Digikey]] | | ||
| | " | TO-220 | 1.25+ adjustable @ 0.8 A \\ Works similar to LM317 but lower dropout | [[http://www.mouser.com/Search/ProductDetail.aspx?R=LD1117Vvirtualkey51120000virtualkey511-LD1117V|Mouser]] [[http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=497-7310-5-ND|Digikey]] | | | " | TO-220 | 1.25+ adjustable @ 0.8 A \\ Works similar to LM317 but lower dropout | [[http://www.mouser.com/Search/ProductDetail.aspx?R=LD1117Vvirtualkey51120000virtualkey511-LD1117V|Mouser]] [[http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=497-7310-5-ND|Digikey]] | | ||
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| ==== LM317, LM337 ==== | ==== LM317, LM337 ==== | ||
| Basically the same as the 78xx regulator, but adjustable. It also has three pins: input, output, adjust. A voltage divider (2 resistors) is connected to the output pin and ground to create a reference voltage. This reference voltage is connected to the adjust pin. The regulator will adjust the output voltage, until the reference voltage is 1.25V. By altering one of the resistors of the voltage divider, you can adjust the output voltage. | Basically the same as the 78xx regulator, but adjustable. It also has three pins: input, output, adjust. A voltage divider (2 resistors) is connected to the output pin and ground to create a reference voltage. This reference voltage is connected to the adjust pin. The regulator will adjust the output voltage, until the reference voltage is 1.25V. By altering one of the resistors of the voltage divider, you can adjust the output voltage. | ||
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| ====== Switching regulators ====== | ====== Switching regulators ====== | ||
| + | ==== 7660 Switched Capacitor Voltage Converter ==== | ||
| + | |||
| + | The 7660 is a voltage converter capable of converting a positive voltage in the range of +1.5V to +10V to a negative voltage of −1.5V to −10V | ||
| - | | 7660 | Charge pump based step-up/voltage inverting chip. \\ Provides a low-current voltage at either -Vin or \\ 2Vin, using only capacitors. Suitable for \\ providing a negative rail for low-power op-amp circuits, or \\ a low-current stepped-up supply for programming \\ voltages on flash-based microcontrollers. | Available in MSOP-8, PDIP-8, SOP-8. | Widely available from many \\ suppliers and manufacturers. | | + | ^ Image ^ Part # & Datasheet ^ Description ^ Package notes ^ Distributor ^ |
| + | | . | [[http://www.ti.com/lit/ds/symlink/lmc7660.pdf|LCM7660]] | Charge pump based step-up/voltage inverting chip. \\ Provides a low-current voltage at either -Vin or \\ 2Vin, using only capacitors. Suitable for \\ providing a negative rail for low-power op-amp circuits, or \\ a low-current stepped-up supply for programming \\ voltages on flash-based microcontrollers. | Available in MSOP-8, PDIP-8, SOP-8. | Widely available from many \\ suppliers and manufacturers. | | ||
| ====== DC/DC converters ====== | ====== DC/DC converters ====== | ||
/home/ladyada/public_html/wiki/data/pages/partfinder/vreg.txt · Last modified: 2016/01/28 18:05 (external edit)
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