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Secuenciadores

LM3880

ACTIVO

Secuenciador de potencia simple de 3 carriles con retardo de tiempo fijo

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LM3880

ACTIVO
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Detalles del producto

Supply voltage (min) (V) 2.7 Supply voltage (max) (V) 5.5 Iq (typ) (mA) 0.025 Time delay (ms) 2, 10, 16, 30, 60, 120 Number of sequenced outputs 3 Rating Catalog Operating temperature range (°C) -40 to 125
Supply voltage (min) (V) 2.7 Supply voltage (max) (V) 5.5 Iq (typ) (mA) 0.025 Time delay (ms) 2, 10, 16, 30, 60, 120 Number of sequenced outputs 3 Rating Catalog Operating temperature range (°C) -40 to 125
SOT-23 (DBV) 6 8.12 mm² 2.9 x 2.8
  • Simple solution for sequencing three voltage rails from a single input signal
  • Easily cascade up to three devices to sequence as many as nine voltage rails
  • Powerup and powerdown control
  • Tiny 2.9-mm x 1.6-mm footprint
  • Low quiescent current: 25 µA
  • Input voltage range: 2.7 V to 5.5 V
  • Standard timing options available
  • Simple solution for sequencing three voltage rails from a single input signal
  • Easily cascade up to three devices to sequence as many as nine voltage rails
  • Powerup and powerdown control
  • Tiny 2.9-mm x 1.6-mm footprint
  • Low quiescent current: 25 µA
  • Input voltage range: 2.7 V to 5.5 V
  • Standard timing options available

The LM3880 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 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.

The LM3880 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 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.
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Documentación técnica

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Tipo Título Fecha
* Data sheet LM3880 Simple Power Sequencer datasheet (Rev. M) 15 mar 2021
Application note High-Performance CMOS Image Sensor Power Supply in Industrial Camera and Vision (Rev. A) 30 jul 2021
Application brief Creating a Sequencing Voltage Supervisor (Reset IC) Using TPS386000 and LM3880 14 may 2019
Selection guide Power Management Guide 2018 (Rev. R) 25 jun 2018
Technical article How to manage processor power during uncontrolled power off PDF | HTML 21 jun 2018
Technical article FPGA power made simple: sequencing PDF | HTML 13 nov 2017
Technical article Sequencing solutions: simple, reliable and cost-effective PDF | HTML 27 sep 2017
Technical article A simple six-channel power-rail sequencing solution PDF | HTML 16 nov 2015
Technical article Multiphase DC/DC converters provide low ripple, integrated solution for FPGA power PDF | HTML 09 jul 2015
Analog Design Journal Analog Applications Journal 4Q 2014 24 oct 2014
Analog Design Journal Power-supply sequencing for FPGAs 24 oct 2014
EVM User's guide AN-1491 LM3880 Power Sequencer Demo Board (Rev. A) 07 may 2013
Application note LM1771 and LM3880 Based FPGA Power Supply Reference Design (Rev. A) 05 may 2013
Application note AN-1603 LM274X Reference Designs (Rev. C) 01 may 2013
Application note Power Supply Design Considerations for Modern FPGAs (Power Designer 121) 02 feb 2010

Diseño y desarrollo

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.

Placa de evaluación

LM3880EVAL — Secuenciador de potencia

The LM3880 evaluation board has been designed to connect directly to the power supplies of an existing system to enable sequencing. Upon enabling the device, the three open drain output flags will rise in sequential order, 1-2-3. Once the part is disabled, the shutdown sequence will occur in (...)

Guía del usuario: PDF
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Modelo de simulación

LM3880 PSpice Transient Model

SNVMBB4.ZIP (45 KB) - PSpice Model
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Herramienta de simulación

PSPICE-FOR-TI — PSpice® para herramienta de diseño y simulación de TI

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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Diseños de referencia

PMP10711 — Diseño de referencia de fuente de alimentación sencilla de 6 canales para salidas multiriel

PMP10711 is a 6-channel power supply sequencer that utilizes two LM3880 3-channel sequencer ICs. The design uses an external AND gate and OR gate to power up and power down all 6 channels in sequential fashion. This is useful in cases when up to 6 power rails need to be sequenced during power up (...)
Test report: PDF
Esquema: PDF
Diseños de referencia

TIDA-010009 — Diseño de referencia de fuente de alimentación auxiliar de entrada de 24 V compacta y eficiente para

This reference design showcases a method to generate power supplies required in a servo or AC drive including the analog and digtal I/O interfaces, encoder supply, isolated transceivers and digital processing block. This design also implements protection against input reverse polarity, output (...)
Design guide: PDF
Esquema: PDF
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TIDA-010034 — Diseño de referencia de entrada de adaptador de 12 V PoE de tipo 1 IEEE802.3at para el punto de carg

Power over Ethernet (PoE) enables power to be delivered over the same ethernet cable as data with no danger of cross-talk, interference, or corruption of the data streams. This reference design showcases end-to-end power tree for an IP network camera powered using PoE or 12-V adapter based on the (...)
Design guide: PDF
Esquema: PDF
Diseños de referencia

TIDA-010011 — Diseño de referencia de arquitectura de fuente de alimentación de alta eficiencia para módulo de pro

Este diseño de referencia muestra varias arquitecturas de energía para generar varios carriles de tensión para un módulo procesador de aplicaciones, que requieren una corriente de carga de >1 A y alta eficiencia. La fuente de alimentación necesaria se genera mediante la entrada de CC de 5, 12 o (...)
Design guide: PDF
Esquema: PDF
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TIDA-01416 — Diseño de referencia de fuente de alimentación flexible de pequeña eficiencia para procesadores de l

This small, efficient and flexible power supply for NXP™ IMX7 series application processors reference design was designed for iMX7 processors. This design uses five DC/DC converters and one sequencer IC to power the iMX7. It supports numerous industrial applications and any (...)
Design guide: PDF
Esquema: PDF
Diseños de referencia

PMP10600 — Solución de alimentación Xilinx® Zynq®7000 series (XC7Z015), 5 W - Diseño de referencia

The PMP10600.1 reference design provides all the power supply rails necessary to power Xilinx® Zynq® 7000 series (XC7Z015) FPGA.   This design uses several LMZ3 series modules, LDOs, and a DDR termination regulator.  It also features one LM3880 for power up and power (...)
Test report: PDF
Esquema: PDF
Diseños de referencia

PMP10601 — Solución de alimentación Xilinx® Zynq® 7000 series (XC7Z015), 8 W - Diseño de referencia

The PMP10601 reference design provides all the power supply rails necessary to power Xilinx® Zynq® 7000 series (XC7Z015)  FPGA.   This design uses several LMZ3 series modules, LDOs, and a DDR termination regulator to provide all the necessary rails to power the FPGA.  It also (...)
Test report: PDF
Esquema: PDF
Diseños de referencia

PMP10652 — Diseño de referencia a nivel de sistema para un sistema ADAS de 30 W con las protecciones necesarias

PMP10652 is a System optimized (CISPR 25 Class 3) 30W design for Surround View ADAS system.

The design has various protections such as Load dump through TVS (ISO pulse testing), Reverse Voltage (Innovative Smart diode with very low Iq), Battery Disconnect Switch with OVP protection (PFET) and is EMI (...)

Test report: PDF
Esquema: PDF
Diseños de referencia

PMP10630 — Diseño de referencia de la FPGA Xilinx Kintex UltraScale XCKU040 Power Solution, 6 W

The PMP10630 reference design is a complete high density power solution for Xilinx® Kintex® UltraScale™ XCKU040 FPGA. This design uses an optimal combination of SIMPLE SWITCHER® modules and LDOs to provide all the necessary voltage rails in a small solution size of 36 x 43 mm (1.4 (...)
Test report: PDF
Esquema: PDF
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SOT-23 (DBV) 6 Ultra Librarian
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