首頁 電源管理 監控器和重設 IC
首頁
電源管理
監控器和重設 IC

TPS3618-50

現行

適用於 RAM 保持的 5-V 電池備份監控器

立即訂購
產品規格表

TPS3618-50

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) 4.55 Features Battery backup switchover, PFI/PFO, Timeout watchdog, Undervoltage monitor only, Watchdog, Watchdog function, Watchdog timer Reset threshold accuracy (%) 2 Iq (typ) (mA) 0.04 Output driver type/reset output Active-low, Push-Pull Time delay (ms) 100 Supply voltage (min) (V) 1.65 Supply voltage (max) (V) 5.5 Rating Catalog Watchdog timer WDI (s) 0.8 Operating temperature range (°C) -40 to 125
Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 4.55 Features Battery backup switchover, PFI/PFO, Timeout watchdog, Undervoltage monitor only, Watchdog, Watchdog function, Watchdog timer Reset threshold accuracy (%) 2 Iq (typ) (mA) 0.04 Output driver type/reset output Active-low, Push-Pull Time delay (ms) 100 Supply voltage (min) (V) 1.65 Supply voltage (max) (V) 5.5 Rating Catalog Watchdog timer WDI (s) 0.8 Operating temperature range (°C) -40 to 125
VSSOP (DGK) 8 14.7 mm² 3 x 4.9
  • Supply Current of 40 µA (Max)
  • Battery Supply Current of 100 nA (Max)
  • Precision 5-V Supply Voltage Monitor, Other Voltage Options on Request
  • Backup-Battery Voltage Can Exceed VDD
  • Watchdog Timer With 800-ms Time-Out
  • Power-On Reset Generator With Fixed 100-ms Reset Delay Time
  • Voltage Monitor for Power-Fail or Low-Battery Monitoring
  • Battery Freshness Seal (TPS3617 Only)
  • 8-Pin MSOP Package
  • Temperature Range: -40° to +85°C
  • APPLICATIONS
    • Fax Machines
    • Set-Top Boxes
    • Advanced Voice Mail Systems
    • Portable Battery Powered Equipment
    • Computer Equipment
    • Advanced Modems
    • Automotive Systems
    • Portable Long-Time Monitoring Equipment
    • Point-of-Sale Equipment
  • Supply Current of 40 µA (Max)
  • Battery Supply Current of 100 nA (Max)
  • Precision 5-V Supply Voltage Monitor, Other Voltage Options on Request
  • Backup-Battery Voltage Can Exceed VDD
  • Watchdog Timer With 800-ms Time-Out
  • Power-On Reset Generator With Fixed 100-ms Reset Delay Time
  • Voltage Monitor for Power-Fail or Low-Battery Monitoring
  • Battery Freshness Seal (TPS3617 Only)
  • 8-Pin MSOP Package
  • Temperature Range: -40° to +85°C
  • APPLICATIONS
    • Fax Machines
    • Set-Top Boxes
    • Advanced Voice Mail Systems
    • Portable Battery Powered Equipment
    • Computer Equipment
    • Advanced Modems
    • Automotive Systems
    • Portable Long-Time Monitoring Equipment
    • Point-of-Sale Equipment

The TPS3617 and TPS3618 are battery-backup supervisors that monitor 5 V supplies. They provide a battery-backup function ideal for applications that require data retention of CMOS RAM during fault conditions. When the voltage at VDD drops below a preset threshold (VIT), the active low push-pull RESET output asserts, and VOUT switches from VDD to VBAT. When VDD rises above the trip threshold, VOUT switches immediately from VBAT to VDD. The RESET output remains low until the delay time (td) expires. During power on, RESET is asserted when the supply voltage (VDD or VBAT) goes higher than 1.1 V.

The PFI and PFO pins are provided if additional voltage monitoring is needed. If the voltage at PFI is less than 1.15 V, the push-pull PFO pin will assert low. When the voltage at PFI exceeds the threshold voltage, PFO will go high.

These devices also feature a watchdog timer pin (WDI) that monitors processor activity and asserts RESET if the the processor is inactive longer than the watchdog timeout period. If the watchdog timer is not used, the WDI pin should be left floating.

The TPS3617 and TPS3618 are available in an 8-pin MSOP package and are characterized for operation over a temperature range of -40°C to +85°C.

The TPS3617 and TPS3618 are battery-backup supervisors that monitor 5 V supplies. They provide a battery-backup function ideal for applications that require data retention of CMOS RAM during fault conditions. When the voltage at VDD drops below a preset threshold (VIT), the active low push-pull RESET output asserts, and VOUT switches from VDD to VBAT. When VDD rises above the trip threshold, VOUT switches immediately from VBAT to VDD. The RESET output remains low until the delay time (td) expires. During power on, RESET is asserted when the supply voltage (VDD or VBAT) goes higher than 1.1 V.

The PFI and PFO pins are provided if additional voltage monitoring is needed. If the voltage at PFI is less than 1.15 V, the push-pull PFO pin will assert low. When the voltage at PFI exceeds the threshold voltage, PFO will go high.

These devices also feature a watchdog timer pin (WDI) that monitors processor activity and asserts RESET if the the processor is inactive longer than the watchdog timeout period. If the watchdog timer is not used, the WDI pin should be left floating.

The TPS3617 and TPS3618 are available in an 8-pin MSOP package and are characterized for operation over a temperature range of -40°C to +85°C.
open-in-new 尋找其它 監控器和重設 IC
下載 觀看有字幕稿的影片 影片

技術文件

star =TI 所選的此產品重要文件
找不到結果。請清除您的搜尋條件，然後再試一次。
檢視所有 3
類型 標題 日期
* Data sheet Battery-Backup Supervisor for RAM Retention datasheet (Rev. D) 2006年 12月 10日
Application note Optimizing Resistor Dividers at a Comparator (Rev. B) PDF | HTML 2021年 4月 30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
封裝 引腳 下載
VSSOP (DGK) 8 檢視選項
適用 TI 的評估品項標準條款與條件。

訂購與品質

內含資訊：
  • RoHS
  • REACH
  • 產品標記
  • 鉛塗層/球物料
  • MSL 等級/回焊峰值
  • MTBF/FIT 估算值
  • 材料內容
  • 資格摘要
  • 進行中可靠性監測
內含資訊：
  • 晶圓廠位置
  • 組裝地點

支援與培訓

內含 TI 工程師技術支援的 TI E2E™ 論壇

以英文檢視所有論壇主題

內容係由 TI 和社群貢獻者依「現狀」提供，且不構成 TI 規範。檢視使用條款。

若有關於品質、封裝或訂購 TI 產品的問題，請參閱 TI 支援。​​​​​​​​​​​​​​

影片