LM809
- Precision Monitoring of Supply Voltages
- Available Threshold Options:
2.63 V, 2.93 V, 3.08 V, 4.38 V, 4.63 V
- Available Threshold Options:
- Superior Upgrade to MAX809 and MAX810
- Fully Specified Over Temperature
- 140-ms Minimum Power-On Reset Pulse Width,
240-ms Typical- Active-Low RESET Output (LM809)
- Active-High RESET Output (LM810)
- Ensured RESET Output Valid for VCC ≥ 1 V
- Low Supply Current, 15-µA Typical
- Power Supply Transient Immunity
The LM809 and LM810 microprocessors supervisory circuits can be used to monitor the power supplies in microprocessor and digital systems. They provide a reset to the microprocessor during power-up, power-down and brown-out conditions.
The function of the LM809 and LM810 are to monitor the VCC supply voltage, and assert a reset signal whenever this voltage declines below the factory-programmed reset threshold. The reset signal remains asserted for 240 ms after VCC rises above the threshold. The LM809 has an active-low RESET output, while the LM810 has an active-high RESET output.
Seven standard reset voltage options are available, suitable for monitoring 5-V, 3.3-V, and 3-V supply voltages.
With a low supply current of only 15 µA, the LM809 and LM810 are ideal for use in portable equipment.
기술 문서
| 유형 | 직함 | 날짜 | ||
|---|---|---|---|---|
| * | Data sheet | LM809/LM810 3-Pin Microprocessor Reset Circuits datasheet (Rev. E) | PDF | HTML | 2016/04/20 |
| Application note | Voltage Supervisors (Reset ICs): Frequently Asked Questions (FAQs) (Rev. A) | 2020/03/17 | ||
| Selection guide | Voltage Supervisors (Reset ICs) Quick Reference Guide (Rev. H) | 2020/02/28 | ||
| Technical article | Using low-Iq voltage supervisors to extend battery life in handheld electronics | PDF | HTML | 2019/09/27 | |
| E-book | Voltage Supervisor and Reset ICs: Tips, Tricks and Basics | 2019/06/28 | ||
| Selection guide | Power Management Guide 2018 (Rev. R) | 2018/06/25 | ||
| Technical article | Selecting voltage detectors, supervisors, and reset ICs for system safety: part 1 | PDF | HTML | 2016/10/17 | |
| EVM User's guide | TLV8xxxEVM-019 Evaluation Modules User's Guide | 2011/04/08 |
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| 패키지 | 핀 | 다운로드 |
|---|---|---|
| SOT-23 (DBZ) | 3 | 옵션 보기 |
주문 및 품질
- RoHS
- REACH
- 디바이스 마킹
- 납 마감/볼 재질
- MSL 등급/피크 리플로우
- MTBF/FIT 예측
- 물질 성분
- 인증 요약
- 지속적인 신뢰성 모니터링
- 팹 위치
- 조립 위치