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スーパーバイザとリセット IC

TPS3617-50

アクティブ

RAM 保持向け、パワーフェイル入力とウォッチドッグ・タイマ搭載、バッテリ・バックアップ・スーパーバイザ

ご注文はこちら
データシート

この製品には新バージョンがあります。

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TPS3617-50

アクティブ
データシート ご注文はこちら

製品詳細

Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 4.5 Features Battery backup switchover, PFI/PFO, Timeout watchdog, Undervoltage monitor only, Watchdog timer Reset threshold accuracy (%) 2 Iq (typ) (mA) 0.02 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 85
Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 4.5 Features Battery backup switchover, PFI/PFO, Timeout watchdog, Undervoltage monitor only, Watchdog timer Reset threshold accuracy (%) 2 Iq (typ) (mA) 0.02 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 85
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.
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種類 タイトル 最新の英語版をダウンロード 日付
* データシート Battery-Backup Supervisor for RAM Retention データシート (Rev. D) 2006年 12月 10日

購入と品質

記載されている情報：
  • RoHS
  • REACH
  • デバイスのマーキング
  • リード端子の仕上げ / ボールの原材料
  • MSL 定格 / ピーク リフロー
  • MTBF/FIT 推定値
  • 使用原材料
  • 認定試験結果
  • 継続的な信頼性モニタ試験結果
記載されている情報：
  • ファブの拠点
  • 組み立てを実施した拠点

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