LM3880-Q1

AKTIV

Einfacher Stromversorgungssequenzer, Automotive Grade, 3 Schienen, mit fester Zeitverzögerung

Produktdetails

Supply voltage (min) (V) 2.7 Number of supplies monitored 3 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 Automotive Operating temperature range (°C) -40 to 125
Supply voltage (min) (V) 2.7 Number of supplies monitored 3 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 Automotive Operating temperature range (°C) -40 to 125
SOT-23 (DBV) 6 8.12 mm² 2.9 x 2.8
  • 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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Technische Dokumentation

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Typ Titel Datum
* Data sheet LM3880-Q1 Simple Power Sequencer datasheet (Rev. A) 26 Feb 2021
Technical article The need for sequencing in automotive applications PDF | HTML 30 Jan 2018
Technical article Improving DDR Memory Performance in Automotive Applications PDF | HTML 22 Jun 2017
Analog Design Journal Power-supply sequencing for FPGAs 24 Okt 2014
EVM User's guide AN-1491 LM3880 Power Sequencer Demo Board (Rev. A) 07 Mai 2013
Application note LM1771 and LM3880 Based FPGA Power Supply Reference Design (Rev. A) 05 Mai 2013
Application note AN-1603 LM274X Reference Designs (Rev. C) 01 Mai 2013
Application note Power Supply Design Considerations for Modern FPGAs (Power Designer 121) 02 Feb 2010

Design und Entwicklung

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SOT-23 (DBV) 6 Ultra Librarian

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