Product details

Supply voltage (Min) (V) 2.7 Number of supplies monitored 3 Supply voltage (Max) (V) 5.5 Iq (Typ) (uA) 25 Time delay (ms) 2, 10, 16, 30, 60, 120 Number of sequenced outputs 3 Rating Automotive
Supply voltage (Min) (V) 2.7 Number of supplies monitored 3 Supply voltage (Max) (V) 5.5 Iq (Typ) (uA) 25 Time delay (ms) 2, 10, 16, 30, 60, 120 Number of sequenced outputs 3 Rating Automotive
SOT-23 (DBV) 6 5 mm² 2.9 x 1.6
  • Qualified for automotive applications
  • AEC-Q100 qualified with the following results:
    • Device temperature grade: –40°C to 125°C junction uemperature range
  • 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
  • Qualified for automotive applications
  • AEC-Q100 qualified with the following results:
    • Device temperature grade: –40°C to 125°C junction uemperature range
  • 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-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.

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.

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Technical documentation

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Type Title Date
* Data sheet LM3880-Q1 Simple Power Sequencer datasheet (Rev. A) 26 Feb 2021
Technical article 3 quiescent-current (Iq) specifications you need to understand 12 Nov 2021
Technical article The need for sequencing in automotive applications 30 Jan 2018
Technical article Improving DDR memory performance in automotive applications 22 Jun 2017
Technical article Sequencing and managing multiple power rails in a system: common questions answered 01 Feb 2017
Analog design journal Power-supply sequencing for FPGAs 24 Oct 2014
User 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

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

LM3880EVAL — Power Sequencer

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 (...)

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Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

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 (...)
Reference designs

TIDA-00530 — Automotive Power Reference Design for Low Power TDA3x Based Systems

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TIDA-00803 — Automotive Power Design for Front Camera Systems Using Single-Core Voltage Application Processors

This reference design provides a broadly-applicable automotive power design for a variety of ADAS processors, focusing on front and rear camera applications. The design supports an input range of 4 V to 48 V to supply common processor power rails through discrete components.  This adds to the (...)
Reference designs

TIDA-00346 — Cost-optimized power supply solution for entry-level core application processor-based ADAS systems

The TIDA-00346 design provides the power supply rails necessary for typical  entry-level application processors in automotive advanced driver assistance systems (ADAS) applications.  The design uses several individual DC/DC voltage regulators as well as load switches and linear regulators (...)
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SOT-23 (DBV) 6 View options

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