LM3880-Q1
- 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.
기술 자료
| 상위 문서 | 유형 | 직함 | 형식 옵션 | 최신 영어 버전 다운로드 | 날짜 |
|---|---|---|---|---|---|
| * | 데이터 시트 | LM3880-Q1 Simple Power Sequencer datasheet (Rev. A) | PDF | HTML | 2021. 2. 26 | |
| 기술 문서 | The need for sequencing in automotive applications | PDF | HTML | 2018. 1. 30 | ||
| 기술 문서 | Improving DDR Memory Performance in Automotive Applications | PDF | HTML | 2017. 6. 22 | ||
| 아날로그 디자인 학술지 | Power-supply sequencing for FPGAs | 2014. 10. 24 | |||
| 애플리케이션 노트 | LM1771 and LM3880 Based FPGA Power Supply Reference Design (Rev. A) | 2013. 5. 5 | |||
| 애플리케이션 노트 | AN-1603 LM274X Reference Designs (Rev. C) | 2013. 5. 1 | |||
| 애플리케이션 노트 | Power Supply Design Considerations for Modern FPGAs (Power Designer 121) | 2010. 2. 2 |
설계 및 개발
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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 (...)
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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 (...)
TIDA-00530 — 저전력 TDA3x 기반 시스템을 위한 차량용 전원 레퍼런스 디자인
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 (...)
TIDA-00803 — 단일 코어 전압 애플리케이션 프로세스를 사용한 전면 카메라 시스템용 자동차 전원 설계
| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| SOT-23 (DBV) | 6 | Ultra Librarian |