LP3470A

現行

具有可編程延遲和 1% 重設閾值的超低電位作動重設 IC

產品詳細資料

Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 2.63, 2.75, 2.93, 3.08, 3.65, 4, 4.38, 4.63 Features Manual reset capable, Negative Voltage Monitoring, Reset time delay, Undervoltage monitor only, Wide input voltage Reset threshold accuracy (%) 1.5 Iq (typ) (mA) 0.0003 Output driver type/reset output Active-low, Open-drain Supply voltage (min) (V) 0.9 Supply voltage (max) (V) 10 Rating Catalog Watchdog timer WDI (s) None Operating temperature range (°C) -40 to 125
Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 2.63, 2.75, 2.93, 3.08, 3.65, 4, 4.38, 4.63 Features Manual reset capable, Negative Voltage Monitoring, Reset time delay, Undervoltage monitor only, Wide input voltage Reset threshold accuracy (%) 1.5 Iq (typ) (mA) 0.0003 Output driver type/reset output Active-low, Open-drain Supply voltage (min) (V) 0.9 Supply voltage (max) (V) 10 Rating Catalog Watchdog timer WDI (s) None Operating temperature range (°C) -40 to 125
SOT-23 (DBV) 5 8.12 mm² 2.9 x 2.8
  • Pin-to-pin compatible with LP3470
  • 5-Pin SOT-23 package
  • Open-drain RESET output
  • Programmable reset time-out period using an external capacitor
  • Immune to short VCC transients
  • ±1% Reset threshold accuracy (typical)
  • Ultra-low quiescent current (0.3 µA typical)
  • RESET valid down to VCC = 0.95 V
  • Pin-to-pin compatible with LP3470
  • 5-Pin SOT-23 package
  • Open-drain RESET output
  • Programmable reset time-out period using an external capacitor
  • Immune to short VCC transients
  • ±1% Reset threshold accuracy (typical)
  • Ultra-low quiescent current (0.3 µA typical)
  • RESET valid down to VCC = 0.95 V

The LP3470A device is a micropower voltage supervisory circuit designed to monitor voltages within 1% of reset threshold overtemperature and is pin-to-pin compatible with existing TI device LP3470. The LP3470A device provides accurate, nano-power voltage monitoring with programmable delay.

The LP3470A asserts a reset signal whenever the VCC supply voltage falls below a reset threshold. The reset time-out period is adjustable using an external capacitor. Reset remains asserted for an interval (programmed by an external capacitor) after VCC has risen above the threshold voltage plus hysteresis.

For information on available reset threshold voltage options, see Mechanical, Packaging, and Orderable Information.

The LP3470A device is a micropower voltage supervisory circuit designed to monitor voltages within 1% of reset threshold overtemperature and is pin-to-pin compatible with existing TI device LP3470. The LP3470A device provides accurate, nano-power voltage monitoring with programmable delay.

The LP3470A asserts a reset signal whenever the VCC supply voltage falls below a reset threshold. The reset time-out period is adjustable using an external capacitor. Reset remains asserted for an interval (programmed by an external capacitor) after VCC has risen above the threshold voltage plus hysteresis.

For information on available reset threshold voltage options, see Mechanical, Packaging, and Orderable Information.

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技術文件

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類型 標題 日期
* Data sheet LP3470A Ultra Low Power Voltage Supervisor With Programmable Delay and 1% Reset Threshold datasheet (Rev. C) PDF | HTML 2020年 5月 8日
Application brief Migrating Designs to LP3470A Low Iq Voltage Supervisor for Improved Power Supply (Rev. A) 2020年 4月 16日
E-book Voltage Supervisor and Reset ICs: Tips, Tricks and Basics 2019年 6月 28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)。

模擬型號

LP3470A263 Unencrypted PSPICE Model

SNVMBU0.ZIP (56 KB) - PSpice Model
模擬型號

LP3470A275 Unencrypted PSpice Model

SNVMBU1.ZIP (55 KB) - PSpice Model
模擬型號

LP3470A293 Unencrypted PSpice Model

SNVMBU2.ZIP (52 KB) - PSpice Model
模擬型號

LP3470A308 Unencrypted PSpice Model

SNVMBU3.ZIP (54 KB) - PSpice Model
模擬型號

LP3470A365 Unencrypted PSpice Model

SNVMBU4.ZIP (53 KB) - PSpice Model
模擬型號

LP3470A400 Unencrypted PSpice Model

SNVMBU5.ZIP (53 KB) - PSpice Model
模擬型號

LP3470A438 Unencrypted PSpice Model

SNVMBU6.ZIP (54 KB) - PSpice Model
模擬型號

LP3470A463 Unencrypted PSpice Model

SNVMBU7.ZIP (54 KB) - PSpice Model
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 (...)
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SOT-23 (DBV) 5 檢視選項

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