LM3880

활성

고정 시간 지연을 지원하는 3레일 간단한 전원 시퀀서

제품 상세 정보

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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기술 자료

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15개 모두 보기
유형 직함 날짜
* Data sheet LM3880 Simple Power Sequencer datasheet (Rev. M) 2021/03/15
Application note High-Performance CMOS Image Sensor Power Supply in Industrial Camera and Vision (Rev. A) 2021/07/30
Application brief Creating a Sequencing Voltage Supervisor (Reset IC) Using TPS386000 and LM3880 2019/05/14
Selection guide Power Management Guide 2018 (Rev. R) 2018/06/25
Technical article How to manage processor power during uncontrolled power off PDF | HTML 2018/06/21
Technical article FPGA power made simple: sequencing PDF | HTML 2017/11/13
Technical article Sequencing solutions: simple, reliable and cost-effective PDF | HTML 2017/09/27
Technical article A simple six-channel power-rail sequencing solution PDF | HTML 2015/11/16
Technical article Multiphase DC/DC converters provide low ripple, integrated solution for FPGA power PDF | HTML 2015/07/09
Analog Design Journal Analog Applications Journal 4Q 2014 2014/10/24
Analog Design Journal Power-supply sequencing for FPGAs 2014/10/24
EVM User's guide AN-1491 LM3880 Power Sequencer Demo Board (Rev. A) 2013/05/07
Application note LM1771 and LM3880 Based FPGA Power Supply Reference Design (Rev. A) 2013/05/05
Application note AN-1603 LM274X Reference Designs (Rev. C) 2013/05/01
Application note Power Supply Design Considerations for Modern FPGAs (Power Designer 121) 2010/02/02

설계 및 개발

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평가 보드

LM3880EVAL — 전원 시퀀서

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 (...)

사용 설명서: PDF
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시뮬레이션 모델

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시뮬레이션 툴

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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 (...)
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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 (...)
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Test report: PDF
회로도: PDF
패키지 CAD 기호, 풋프린트 및 3D 모델
SOT-23 (DBV) 6 Ultra Librarian

주문 및 품질

포함된 정보:
  • RoHS
  • REACH
  • 디바이스 마킹
  • 납 마감/볼 재질
  • MSL 등급/피크 리플로우
  • MTBF/FIT 예측
  • 물질 성분
  • 인증 요약
  • 지속적인 신뢰성 모니터링
포함된 정보:
  • 팹 위치
  • 조립 위치

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