The LM3880-Q1 simple power supply sequencer offers the easiest method to control powerup sequencing and powerdown sequencing of multiple Independent voltage rails. By staggering the startup sequence, it is possible to avoid latch conditions or large in-rush currents that can affect the reliability of the system.
Available in a 6-pin SOT-23 package, the simple sequencer contains a precision enable pin and three open-drain output flags. The open-drain output flags permit that they can be pulled up to distinct voltage supplies separate from the sequencer VDD (only if they do not exceed the recommended maximum voltage of 0.3 V greater than VDD), so as to interface with ICs requiring a range of different enable signals. When the LM3880-Q1 is enabled, the three output flags sequentially release, after individual time delays, thus permitting the connected power supplies to start up. The output flags follow a reverse sequence during power down to avoid latch conditions.
EPROM capability allows every delay and sequence to be fully adjustable. Contact Texas Instruments to request a non-standard configuration.
| Documentación principal | Tipo | Título | Opciones de formato | Descargar la versión más reciente en inglés | Fecha |
|---|---|---|---|---|---|
| * | Hoja de datos | LM3880-Q1 Simple Power Sequencer datasheet (Rev. A) | PDF | HTML | 26/02/2021 | |
| Artículo técnico | The need for sequencing in automotive applications | PDF | HTML | 30/01/2018 | ||
| Artículo técnico | Improving DDR Memory Performance in Automotive Applications | PDF | HTML | 22/06/2017 | ||
| Analog Design Journal | Power-supply sequencing for FPGAs | 24/10/2014 | |||
| Nota sobre la aplicación | LM1771 and LM3880 Based FPGA Power Supply Reference Design (Rev. A) | 5/05/2013 | |||
| Nota sobre la aplicación | AN-1603 LM274X Reference Designs (Rev. C) | 1/05/2013 | |||
| Nota sobre la aplicación | Power Supply Design Considerations for Modern FPGAs (Power Designer 121) | 2/02/2010 |
Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.
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| Encapsulado | Pines | Símbolos CAD, huellas y modelos 3D |
|---|---|---|
| SOT-23 (DBV) | 6 | Ultra Librarian |
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