TPS3820
- Power-on reset generator with a fixed delay time of 200ms (TPS3823, TPS3824, TPS3825, and TPS3828) or 25ms (TPS3820)
- Manual reset input (TPS3820, TPS3823, TPS3825, and TPS3828)
- Reset output available in active-low (TPS3820, TPS3823, TPS3824, and TPS3825), active-high (TPS3824 and TPS3825), and open drain (TPS3828)
- Supply voltage supervision range: 2.5V, 3V, 3.3V, 5V
- Watchdog timer (TPS3820, TPS3823, TPS3824, and TPS3828)
- Supply current of 15µA (typical)
- 5-pin SOT-23 package
- Temperature range: −40°C to 85°C (−40°C to 125°C for TPS3823A-33)
The TPS382x family of supervisors provide circuit initialization and timing supervision, primarily for DSP and processor-based systems. During power on, RESET asserts when the supply voltage VDD becomes greater than 1.1V. Thereafter, the supply voltage supervisor monitors VDD and keeps RESET active low as long as VDD remains less than the threshold voltage, VIT−. An internal timer delays the return of the output to the inactive state (high) to make sure proper system reset. The delay time, td, starts after VDD has risen above the threshold voltage (VIT− + VHYS). When the supply voltage drops below the threshold voltage VIT−, the output becomes active (low) again. No external components are required. All the devices of this family have a fixed-sense threshold voltage, VIT–, set by an internal voltage divider. The TPS382x family also offers watchdog time out options of 200ms (TPS3820) and 1.6s (TPS3823, TPS3824, and TPS3828).
관심 가지실만한 유사 제품
비교 대상 장치보다 업그레이드된 기능을 지원하는 즉각적 대체품.
기술 자료
| 상위 문서 | 유형 | 직함 | 형식 옵션 | 최신 영어 버전 다운로드 | 날짜 | |
|---|---|---|---|---|---|---|
| * | 데이터 시트 | TPS382x Voltage Monitor With Watchdog Timer datasheet (Rev. O) | PDF | HTML | 2025. 3. 20 | ||
| 애플리케이션 노트 | Voltage Supervisors (Reset ICs): Frequently Asked Questions (FAQs) (Rev. A) | 2020. 3. 17 | ||||
| 선택 가이드 | Voltage Supervisors (Reset ICs) Quick Reference Guide (Rev. H) | 2020. 2. 28 | ||||
| e북 | Voltage Supervisor and Reset ICs: Tips, Tricks and Basics | 2019. 6. 28 | ||||
| Application brief | Latching a Voltage Supervisor (Reset IC) (Rev. A) | 2019. 4. 5 | ||||
| 선택 가이드 | Power Management Guide 2018 (Rev. R) | 2018. 6. 25 | ||||
| 애플리케이션 노트 | Disabling the Watchdog Timer for TI's Family of Supervisors | 2003. 10. 30 |
설계 및 개발
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
TPS382-Q1EVM — 통합 워치독을 지원하는 TPS382x-Q1 전압 수퍼바이저용 평가 모듈
TIDA-00929 — 아크 신호 캡처를 위한 스펙트럼 분석기 신호 조절 및 처리 레퍼런스 디자인
| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| SOT-23 (DBV) | 5 | Ultra Librarian |