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監控器和重設 IC

TPS3895

現行

單通道、超小型、可調式監控器，具高電位作動、推拉輸出

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產品規格表

TPS3895

現行
產品規格表 立即訂購

產品詳細資料

Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 0.5 Features Manual reset capable, Reset time delay, Undervoltage monitor only Reset threshold accuracy (%) 1 Iq (typ) (mA) 0.006 Output driver type/reset output Active-high, Push-Pull Time delay (ms) 0.04 Supply voltage (min) (V) 1.7 Supply voltage (max) (V) 6.5 Rating Catalog Watchdog timer WDI (s) None Operating temperature range (°C) -40 to 125
Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 0.5 Features Manual reset capable, Reset time delay, Undervoltage monitor only Reset threshold accuracy (%) 1 Iq (typ) (mA) 0.006 Output driver type/reset output Active-high, Push-Pull Time delay (ms) 0.04 Supply voltage (min) (V) 1.7 Supply voltage (max) (V) 6.5 Rating Catalog Watchdog timer WDI (s) None Operating temperature range (°C) -40 to 125
USON (DRY) 6 1.45 mm² 1.45 x 1
  • Very Small USON (1.45 mm × 1.00 mm) Package
  • Adjustable Threshold Down to 500 mV
  • Threshold Accuracy: 1% Over Temperature
  • Capacitor-Adjustable Delay Time
  • Low Quiescent Current: 6 µA (Typical)
  • External Enable Input
  • Open-Drain (Rated at 18 V) and Push-Pull Output
    Options
  • Temperature Range: –40°C to 125°C
  • Pin-for-Pin Compatible With MAX6895/6/7/8
  • Very Small USON (1.45 mm × 1.00 mm) Package
  • Adjustable Threshold Down to 500 mV
  • Threshold Accuracy: 1% Over Temperature
  • Capacitor-Adjustable Delay Time
  • Low Quiescent Current: 6 µA (Typical)
  • External Enable Input
  • Open-Drain (Rated at 18 V) and Push-Pull Output
    Options
  • Temperature Range: –40°C to 125°C
  • Pin-for-Pin Compatible With MAX6895/6/7/8

The TPS3895, TPS3896, TPS3897, and TPS3898 devices (TPS389x) are a family of very small supervisory circuits that monitor voltages greater than 500 mV with a 0.25% (typical) threshold accuracy and offer adjustable delay time using external capacitors. The TPS389x family also has a logic enable pin (ENABLE or ENABLE) to power on and off the output. With the TPS3895, for example, when the input voltage pin (SENSE) rises above the threshold, and the ENABLE pin is high, then the output pin (SENSE_OUT) goes high after the capacitor-adjustable delay time. When SENSE falls below the threshold or ENABLE is low, then SENSE_OUT goes low.

For TPS389xA versions, both SENSE and ENABLE have a capacitor-adjustable delay. The output asserts after this capacitor-adjustable delay when both SENSE and ENABLE inputs are good. The TPS389xP devices have a small, 0.2-µs propagation delay from when the enable pin asserts to when the output pin asserts, provided SENSE is above the threshold.

All devices operate from 1.7 V to 6.5 V and have a typical quiescent current of 6 µA with an open-drain output rated at 18 V. The TPS389x is available in an ultra-small USON package and is fully specified over the temperature range of TJ = –40°C to 125°C.

The TPS3895, TPS3896, TPS3897, and TPS3898 devices (TPS389x) are a family of very small supervisory circuits that monitor voltages greater than 500 mV with a 0.25% (typical) threshold accuracy and offer adjustable delay time using external capacitors. The TPS389x family also has a logic enable pin (ENABLE or ENABLE) to power on and off the output. With the TPS3895, for example, when the input voltage pin (SENSE) rises above the threshold, and the ENABLE pin is high, then the output pin (SENSE_OUT) goes high after the capacitor-adjustable delay time. When SENSE falls below the threshold or ENABLE is low, then SENSE_OUT goes low.

For TPS389xA versions, both SENSE and ENABLE have a capacitor-adjustable delay. The output asserts after this capacitor-adjustable delay when both SENSE and ENABLE inputs are good. The TPS389xP devices have a small, 0.2-µs propagation delay from when the enable pin asserts to when the output pin asserts, provided SENSE is above the threshold.

All devices operate from 1.7 V to 6.5 V and have a typical quiescent current of 6 µA with an open-drain output rated at 18 V. The TPS389x is available in an ultra-small USON package and is fully specified over the temperature range of TJ = –40°C to 125°C.
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類型 標題 日期
* Data sheet TPS389x Single-Channel, Adjustable Voltage Monitor in Ultra-Small Package datasheet (Rev. B) PDF | HTML 2014年 9月 2日
Application note Voltage Supervisors (Reset ICs): Frequently Asked Questions (FAQs) (Rev. A) 2020年 3月 17日
Application note Programmable Push-Button, Pulse Detector, and Pulse Generator Solutions 2020年 3月 10日
Selection guide Voltage Supervisors (Reset ICs) Quick Reference Guide (Rev. H) 2020年 2月 28日
E-book Voltage Supervisor and Reset ICs: Tips, Tricks and Basics 2019年 6月 28日
Application brief Latching a Voltage Supervisor (Reset IC) (Rev. A) 2019年 4月 5日
Selection guide Power Management Guide 2018 (Rev. R) 2018年 6月 25日

設計與開發

如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。

開發板

TPS3897A-6P-EVM047 — 適用於 TPS389xx 單通道可調整監控電路的評估模組

The TPS3897A-6P-EVM047 evaluation module (EVM) is a fully assembled and tested circuit for evaluating the TPS3897A and TPS3896P single-channel adjustable supervisory circuit. The EVM has two complete adjustable supervisory circuits, one featuring a push-pull output and one featuring an (...)
使用指南: PDF
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模擬型號

TPS3895A Unencrypted PSpice Transient Model Package (Rev. A)

SBVM069A.ZIP (33 KB) - PSpice Model
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模擬型號

TPS3895P Unencrypted PSpice Transient Model Package (Rev. A)

SBVM070A.ZIP (33 KB) - PSpice Model
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計算工具

SBVC043 — TPS389x Reset Time Delay Calculator

支援產品和硬體

支援產品和硬體

產品
監控器和重設 IC
TPS3895 — 單通道、超小型、可調式監控器，具高電位作動、推拉輸出 TPS3896 — 單通道、超小型、可調式監控器，具低電位作動、推拉輸出 TPS3897 — 具高電位作動、開汲極輸出的單通道、超小型、可調式監控器 TPS3898 — 具低電位作動、汲極斷路輸出的單通道、超小型、可調式監控器
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模擬工具

PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
要求
參考設計

TIDA-00300 — 適用於通訊和類比輸入/輸出模組的隔離式電源架構參考設計

This reference design provides a means to isolate I2C or SPI communication lines. This is often required in grid infrastructure applications such as protection relays and circuit breakers where high voltages are involved. This reference design provides both power isolation and signal isolation.
Design guide: PDF
電路圖: PDF
參考設計

TIDM-SERVODRIVE — 工業伺服驅動器與 AC 變頻驅動器參考設計

The DesignDRIVE Development Kit is a reference design for a complete industrial drive directly connecting to a three phase ACI or PMSM motor. Many drive topologies can be created from the combined control, power and communications technologies included on this single platform.  Includes (...)
Design guide: PDF
電路圖: PDF
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