전력 관리 통제기 및 리셋 IC 리셋 및 워치독 IC

TLV840

활성

저전압 슈퍼바이저 - 조정 가능한 리셋 시간 지연 및 수동 리셋 지원

제품 상세 정보

Rating Catalog Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 0.8, 1, 1.1, 1.3, 1.4, 2, 2.8, 2.9, 3, 3.3, 3.5, 4, 4.6, 5, 5.2 Features Manual reset capable, Reset time delay, Separate VDD & sense, Undervoltage monitor only Reset threshold accuracy (%) 1 Iq (typ) (mA) 0.0001 Output driver type/reset output Active-low, Open-drain, Push-Pull Time delay (ms) 0, 0.04 Watchdog timer WDI (s) None Operating temperature range (°C) -40 to 125
Rating Catalog Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 0.8, 1, 1.1, 1.3, 1.4, 2, 2.8, 2.9, 3, 3.3, 3.5, 4, 4.6, 5, 5.2 Features Manual reset capable, Reset time delay, Separate VDD & sense, Undervoltage monitor only Reset threshold accuracy (%) 1 Iq (typ) (mA) 0.0001 Output driver type/reset output Active-low, Open-drain, Push-Pull Time delay (ms) 0, 0.04 Watchdog timer WDI (s) None Operating temperature range (°C) -40 to 125
SOT-23 (DBV) 5 8.12 mm² (2.9 mm × 2.8 mm)
  • Operating voltage range : 0.7 V to 6 V
  • Nano supply current : 120 nA (Typical)
  • Fixed threshold voltage (VIT-): 0.8 V to 5.4 V
    • Threshold voltages available in 100mV steps
    • High accuracy: ±0.5% (Typical)
    • Built-in hysteresis (VHYS): 5% (Typical)
  • Reset time delay (tD): capacitor-based programmable (TLV840C, TLV840M)
    • Minimum time delay: 40 µs (typical) without capacitor
  • Active-low manual reset (MR) (TLV840M)
  • Four output topologies:
    • TLV840xxDL: open-drain, active-low (RESET)
    • TLV840xxPL: push-pull, active-low (RESET)
    • TLV840xxDH: open-drain, active-high (RESET)
    • TLV840xxPH: push-pull, active-high (RESET)
  • Wide temperature range: –40°C to +125°C
  • Package: SOT23-5 (DBV)
  • Operating voltage range : 0.7 V to 6 V
  • Nano supply current : 120 nA (Typical)
  • Fixed threshold voltage (VIT-): 0.8 V to 5.4 V
    • Threshold voltages available in 100mV steps
    • High accuracy: ±0.5% (Typical)
    • Built-in hysteresis (VHYS): 5% (Typical)
  • Reset time delay (tD): capacitor-based programmable (TLV840C, TLV840M)
    • Minimum time delay: 40 µs (typical) without capacitor
  • Active-low manual reset (MR) (TLV840M)
  • Four output topologies:
    • TLV840xxDL: open-drain, active-low (RESET)
    • TLV840xxPL: push-pull, active-low (RESET)
    • TLV840xxDH: open-drain, active-high (RESET)
    • TLV840xxPH: push-pull, active-high (RESET)
  • Wide temperature range: –40°C to +125°C
  • Package: SOT23-5 (DBV)

The TLV840 family of voltage supervisors or reset ICs can operate at high voltage levels while maintaining very low quiescent current across the whole VDD and temperature range. TLV840 offers best combination of low power consumption, high accuracy and low propagation delay (tp_HL= 30 µs typical).

Reset output signal is asserted when the voltage at VDD drops below the negative voltage threshold (VIT-). Reset signal is cleared when VDD rise above VIT- plus hysteresis (VHYS) and the reset time delay (tD) expires. Reset time delay can be programmed by connecting a capacitor between the CT pin and ground for TLV840C and TLV840M. For a minimum reset delay time the CT pin can be left floating. TLV840N does not offer a programmable delay and offers fixed reset delay timing options: 40 µs, 2 ms, 10 ms, 30 ms, 50 ms, 80 ms, 100 ms, 150 ms, 200 ms.

Additional features: Low power-on reset voltage (VPOR), built-in glitch immunity protection for VDD, built-in hysteresis, low open-drain output leakage current (Ilkg(OD)). TLV840 is a perfect voltage monitoring solution for industrial applications and battery-powered / low-power applications.

The TLV840 family of voltage supervisors or reset ICs can operate at high voltage levels while maintaining very low quiescent current across the whole VDD and temperature range. TLV840 offers best combination of low power consumption, high accuracy and low propagation delay (tp_HL= 30 µs typical).

Reset output signal is asserted when the voltage at VDD drops below the negative voltage threshold (VIT-). Reset signal is cleared when VDD rise above VIT- plus hysteresis (VHYS) and the reset time delay (tD) expires. Reset time delay can be programmed by connecting a capacitor between the CT pin and ground for TLV840C and TLV840M. For a minimum reset delay time the CT pin can be left floating. TLV840N does not offer a programmable delay and offers fixed reset delay timing options: 40 µs, 2 ms, 10 ms, 30 ms, 50 ms, 80 ms, 100 ms, 150 ms, 200 ms.

Additional features: Low power-on reset voltage (VPOR), built-in glitch immunity protection for VDD, built-in hysteresis, low open-drain output leakage current (Ilkg(OD)). TLV840 is a perfect voltage monitoring solution for industrial applications and battery-powered / low-power applications.

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기술 자료

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6개 모두 보기
상위 문서 유형 직함 형식 옵션 최신 영어 버전 다운로드 날짜
* 데이터 시트 TLV840 Low Voltage Supervisor with Adjustable Reset Time Delay and Manual Reset datasheet (Rev. C) 2020. 8. 13
기술 문서 Three reasons to add a voltage supervisor to your next wearable power design PDF | HTML 2021. 6. 17
애플리케이션 노트 Back-up Power Supply Switchover with Supply Voltage Supervisor & Power & Power M 2020. 4. 9
애플리케이션 노트 Programmable Push-Button, Pulse Detector, and Pulse Generator Solutions 2020. 3. 10
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

설계 및 개발

추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.

평가 보드

TLV840EVM — 조정 가능한 리셋 시간 지연을 지원하는 저전압 통제기를 위한 TLV840 평가 모듈

TLV840 평가 모듈(EVM)은 5핀 전압 통제기 및 리셋 IC인 TLV840 제품의 성능을 평가할 수 있도록 설계되었습니다. TLV840는 최대 2% 정확도 외에도 1.2µA(최대)의 낮은 정동작 전류를 유지하면서 최대 6V로 작동합니다.

TLV840EVM은 모든 장치 출력 토폴로지를 지원하며 오픈 드레인 출력 변형을 위한 점퍼 J1에 배치할 션트를 포함합니다. 자세한 내용은 TLV840 데이터시트를 참조하십시오.

사용 설명서: PDF
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시뮬레이션 모델

TLV840 PSpice Model

SNVMC19.ZIP (56 KB) - PSpice 모델
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패키지 CAD 기호, 풋프린트 및 3D 모델
SOT-23 (DBV) 5 Ultra Librarian

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