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Product details

Parameters

Number of supplies monitored 3 VCC (Min) (V) 2.7 VCC (Max) (V) 5.5 Iq (Typ) (uA) 25 Time delay (ms) 2, 10, 16, 30, 60, 120 Number of sequenced outputs 3 Rating Automotive open-in-new Find other Sequencers

Package | Pins | Size

SOT-23 (DBV) 6 5 mm² 2.9 x 1.6 open-in-new Find other Sequencers

Features

  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade: –40°C to +125°C Operating Junction Temperature Range
  • Simple Solution for Sequencing 3 Voltage Rails from a Single Input Signal
  • Easily Cascade up to 3 Devices to Sequence as Many as 9 Voltage Rails
  • Power-Up and Power-Down Control
  • Tiny 2.9-mm x 1.9-mm Footprint
  • Low Quiescent Current of 25 µA
  • Input Voltage Range of 2.7 V to 5.5 V
  • Standard Timing Options Available

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Description

The LM3880-Q1 simple power supply sequencer offers the easiest method to control power up sequencing and power down 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-23-6 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 (so long as they do not exceed the recommended maximum voltage of 0.3V 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 will sequentially release, after individual time delays, thus permitting the connected power supplies to start up. The output flags will 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 if a nonstandard configuration is required.

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Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 9
Type Title Date
* Datasheet LM3880-Q1 Three-Rail Simple Power Sequencer datasheet Nov. 12, 2018
Technical articles The need for sequencing in automotive applications Jan. 30, 2018
Technical articles Improving DDR memory performance in automotive applications Jun. 22, 2017
Technical articles Sequencing and managing multiple power rails in a system: common questions answered Feb. 01, 2017
Application note Power-supply sequencing for FPGAs Oct. 24, 2014
User guide AN-1491 LM3880 Power Sequencer Demo Board (Rev. A) May 07, 2013
Application note LM1771 and LM3880 Based FPGA Power Supply Reference Design (Rev. A) May 05, 2013
Application note AN-1603 LM274X Reference Designs (Rev. C) May 01, 2013
Application note Power Supply Design Considerations for Modern FPGAs (Power Designer 121) Feb. 02, 2010

Design & development

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

Hardware development

EVALUATION BOARD Download
Power Sequencer
LM3880EVAL
document-generic User guide
25
Description

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 reverse (...)

Features
  • Power up and power down control
  • Input voltage range of 2.7 V to 5.5 V
  • Small footprint SOT23-6
  • Low quiescent current of 20 mA
  • Standard timing options available

Design tools & simulation

SIMULATION TOOL Download
PSpice® for TI design and simulation tool
PSPICE-FOR-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 (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)

Reference designs

REFERENCE DESIGNS Download
Automotive Power Design for Front Camera Systems Using Single-Core Voltage Application Processors
TIDA-00803 — This TI Design provides a broadly applicable automotive power solution 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, which adds to the versatility (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Automotive Power Reference Design for Low Power TDA3x Based Systems
TIDA-00530 This solution was designed to make an integrated, size-optimized power design for ADAS applications using the TDA3x SoC off of an automotive battery input.  By targeting only applications with lower processing needs, we’re able to choose devices and components which are smaller, compared (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Cost-optimized power supply solution for entry-level core application processor-based ADAS systems
TIDA-00346 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 (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
SOT-23 (DBV) 6 View options

Ordering & quality

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  • Qualification summary
  • Ongoing reliability monitoring

Support & training

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