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STM1816SWX7F

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Low power reset circuit,Supervisory Circuits 2.88VRST Active Low Open Drain reset

メーカー : STMicroelectronics, Inc
パッケージ : SOT-23-3
製品 : Supervisory Circuits
Datasheet:
RoHs Status: Rohs
マーキングコード: 9BQx
在庫: 1903

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STM1816SWX7F 製品詳細

STM181x devices are low power reset devices used to monitor power supplies for microcontrollers. They perform a single function: asserting a reset signal whenever VCCsupply voltage drops below a preset value and keeping it asserted until VCChas risen above the preset threshold for a minimum period of time (trec). They provide excellent circuit reliability without additional external components when used with +3.0 V / +3.3 V (STM1815–STM1818), and +5 V (STM1810–STM1813) power supply systems.

A precision voltage reference and comparator monitors the VCCinput for an out-of-tolerance condition. When an invalid VCCcondition occurs, the reset output (RST) is forced low (or high in the case of RST) and remains asserted for trecafter VCCrises above the reset threshold. The STM1813/1818 also keep reset asserted for trecafter the output is momentarily pulled to ground by an external push-button switch.
The STM1812 and STM1817 have an active-high, push-pull output. The STM1810 and STM1815 (push-pull) and STM1811, STM1813, STM1816, and STM1818 (open-drain) have an active-low RSToutput. The open-drain devices (STM1811 / STM1813 / STM1816SWX7F / STM1818) also have an internal pull-up resistor to VCC. The STM1813 and STM1818 feature a debounced manual reset feature that asserts a reset if the RSTpin is pulled low for more than 1.5 μs. When used to initiate manual reset, RSTdebounces signals from devices such as mechanical switches. For devices with this feature, the release of the external switch triggers the reset period.
The STM181x devices are guaranteed to output the correct logic state for VCCdown to 1.0 V (0 °C to +105 °C). They also provide a reset comparator designed to ignore fast transients on VCC.
Reset thresholds are available between +2.55 V and +4.62 V. These small, low power devices are ideal for use in portable equipment. All are available in the space-saving 3-pin SOT23 package, and are specified from –40 °C to +105 °C.

アプリケーション/パラメータの範囲

  • Push-pull, active-high (STM1812,1817)
  • Push-pull, active-low (STM1810,1815)
  • Open-drain, active-low (STM1811,1816)
  • Open-drain, active-low with push-button detect (STM1813,1818)
  • Reset pulse width - 100 ms (min.)
  • Low supply current - 4 μA (typ.)
  • Guaranteed assertion down to VCC= 1.0 V (0 °C to 105 °C)
  • Factory-trimmed reset thresholds of 2.55 V, 2.88 V, 3.06 V, 4.37 V, and 4.62 V (typ.)

    • The STM1816SWX7F, manufactured by stmicroelectronics, is a microprocessor monitoring circuit. It offers multiple reset outputs for reliable system monitoring. With features like precision voltage monitoring, various output configurations, and low power consumption, it's well-suited for diverse applications. It comes in TO-236-3, SC-59, SOT-23-3 packages. Its reset threshold voltage is 2.88V, and it has a wide operating temperature range from -40 °C to 105 °C.

     

    Benefits

    • Precision monitoring of 3 V, 3.3 V, and 5 V supply voltages
    • Four output configurations including push-pull, active-high (STM1812,1817); push-pull, active-low (STM1810,1815); open-drain, active-low (STM1811,1816); open-drain, active-low with push-button detect (STM1813,1818)
    • Reset pulse width - 100 ms (min.)
    • Low supply current - 4 μA (typ.)
    • Guaranteed assertion down to VCC= 1.0 V (0 °C to 105 °C)
    • Factory-trimmed reset thresholds of 2.55 V, 2.88 V, 3.06 V, 4.37 V, and 4.62 V (typ.)
    • Power supply transient immunity
    • Push-button/manual reset detect (STM1813/1818)
    • Operating temperature: -40 °C to 105 °C
    • ± 2.5% reset threshold accuracy:(-40 °C to 105 °C)
    • Available in the SOT23-3 package
    • Fully compatible with DS181x and MXD181x products.

     

    Pinout

    The STM1816SWX7F has a 3-pin configuration in its SOT - 23 - 3 package. The pins are crucial for power supply, input monitoring, and reset signal output.

    • VCC: Power supply input, with a supply voltage range from 1.2 V to 5.5 V, nominal at 3.6 V.
    • RST: Reset output. For STM1816 (open-drain, active-low), it goes low when VCC supply voltage drops below the preset value and remains low until VCC rises above the preset threshold for a minimum period.
    • GND: Common ground for the circuit.

     

    Application Examples

    • Battery-powered devices
    • Industrial automation
    • Portable electronics
    • Power management systems

     

    技術的パラメータ

    • Number of Voltages Monitored
    • 3
    • Monitored Voltage
    • 3 V, 3.3 V, 5 V
    • Undervoltage Threshold
    • 2.8 V
    • Overvoltage Threshold
    • 2.97 V
    • Output Type
    • Open Collector / Drain
    • Manual Reset
    • Resettable
    • Watchdog
    • No Watchdog
    • Battery Backup Switching
    • No Backup
    • Power Up Reset Delay (Typ)
    • 2 us
    • Supply Voltage Max
    • 5.5 V
    • Maximum Operating Temperature
    • + 105 C
    • Mounting Style
    • SMD/SMT
    • Package / Case
    • SOT-23-3
    • Packaging
    • Reel
    • Chip Enable Signals
    • No
    • Maximum Power Dissipation
    • 320 mW
    • Minimum Operating Temperature
    • - 40 C
    • Power Fail Detection
    • No
    • Factory Pack Quantity
    • 3000
    • Supply Current (Typ)
    • 4 uA
    • Supply Voltage Min
    • 1 V

    STM1816SWX7F 同等の部分

    STM1816SWX7Fコンポーネントには、これらの交換部品や代替部品を検討することができます。

    モデル メーカー パッケージ 備考
    STM1816UWX7F
    STM1816TWX7F ST SOT-23-3 Low power reset circuit,Supervisory Circuits 3.06VRST Active Low Open Drain reset
    STM1816RWX7F ST SOT-23-3 Low power reset circuit,Supervisory Circuits 2.55VRST Active Low Open Drain reset

    STM1816SWX7F 特殊な製品に関連する

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    Q: How does Jotrin guarantee that STM1816SWX7F is the original manufacturer or agent of ST?
    We have a professional business development department to strictly test and verify the qualifications of ST original manufacturers and agents. All ST suppliers must pass the qualification review before they can publish their STM1816SWX7F devices; we pay more attention to the channels and quality of STM1816SWX7F products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
    Q: How to find the detailed information of STM1816SWX7F chips? Including ST original factory information, Supervisory Circuits application, STM1816SWX7F pictures?
    You can use Jotrin's intelligent search engine, or filter by Reset and Supervisor ICs ; Resets and Voltage Detectors category, or find it through STMicroelectronics, Inc Information page.
    Q: Are the ST's STM1816SWX7F price and stock displayed on the platform accurate?
    The ST's inventory fluctuates greatly and cannot be updated in time, it will be updated periodically within 24 hours. After submitting an order for STM1816SWX7F, it is recommended to confirm the order with Jotrin salesperson or online customer service before payment.
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    All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the STM1816SWX7F we delivered, we will accept the replacement or return of the STM1816SWX7F only when all of the below conditions are fulfilled:
    (1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.
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