The TPS3803 and TPS3805 families of supervisory circuits provide circuit initialization and timing supervision, primarily for DSPs and processor-based systems.

The TPS3803G15 device has a fixed-sense threshold voltage V_IT set by an internal voltage divider, whereas the TPS3803–01 has an adjustable SENSE input that can be configured by two external resistors. In addition to the fixed sense threshold monitored at V_DD, the TPS3805 devices provide a second adjustable SENSE input. RESET is asserted in case any of the two voltages drops below V_IT.

During power on, RESET is asserted when supply voltage V_DD becomes higher than 0.8 V. Thereafter, the supervisory circuit monitors V_DD (and/or SENSE) and keeps RESET active as long as V_DD or SENSE remains below the threshold voltage V_IT. As soon as V_DD (SENSE) rises above the threshold voltage V_IT, RESET is deasserted again. The product spectrum is designed for 1.5 V, 3.3 V, and adjustable supply voltages. The devices are available in a 5-pin SC-70 package.

• Controlled Baseline
  • One Assembly/Test Site, One Fabrication Site
• Extended Temperature Performance of –55°C to +125°C
• Enhanced Diminishing Manufacturing Sources (DMS) Support
• Enhanced Product-Change Notification
• Qualification Pedigree(1)
• Single Voltage Detector (TPS3803): Adjustable/1.5 V
• Dual Voltage Detector (TPS3805): Adjustable/3.3 V
• High ±1.5% Threshold Voltage Accuracy
• Supply Current: 3 μA Typical at VDD = 3.3 V
• Push/Pull Reset Output (TPS3805) Open-Drain Reset Output (TPS3803)
• 5-Pin SC–70 Package
• APPLICATIONS
  • Applications Using DSPs, Microcontrollers, or Microprocessors
  • Wireless Communication Systems
  • Portable/Battery-Powered Equipment
  • Programmable Controls
  • Intelligent Instruments
  • Industrial Equipment
  • Notebook/Desktop Computers
  • Automotive Systems

(1) Component qualification in accordance with JEDEC and industry standards to ensure reliable operation over an extended temperature range. This includes, but is not limited to, Highly Accelerated Stress Test (HAST) or biased 85/85, temperature cycle, autoclave or unbiased HAST, electromigration, bond intermetallic life, and mold compound life. Such qualification testing should not be viewed as justifying use of this component beyond specified performance and environmental limits.All trademarks are the property of their respective owners.

• Number of supplies monitored
• 2
• Threshold voltage 1 (Typ) (V)
• 3.05
• Features
• Ease-of-use
• Reset threshold accuracy (%)
• 1.5
• Output driver type/reset output
• Active-low, Push-pull
• Time delay (ms)
• 0
• Rating
• HiRel Enhanced Product
• Watchdog timer WDI (sec)
• None
• Operating temperature range (C)
• -40 to 125, -55 to 125

TPS3805H33-EP的完整型号有：TPS3805H33MDCKREP、TPS3805H33QDCKREP、V62/04648-03XE、V62/04648-06XE，以下是这些产品的关键参数及官网采购报价：

TPS3805H33MDCKREP，工作温度：-55 to 125，封装：SC70 (DCK)-5，包装数量MPQ：3000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAUAG，TI官网TPS3805H33MDCKREP的批量USD价格：1.65（1000+）

TPS3805H33QDCKREP，工作温度：-40 to 125，封装：SC70 (DCK)-5，包装数量MPQ：3000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAUAG，TI官网TPS3805H33QDCKREP的批量USD价格：1.65（1000+）

V62/04648-03XE，工作温度：-40 to 125，封装：SC70 (DCK)-5，包装数量MPQ：3000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAUAG，TI官网V62/04648-03XE的批量USD价格：1.65（1000+）

V62/04648-06XE，工作温度：-55 to 125，封装：SC70 (DCK)-5，包装数量MPQ：3000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAUAG，TI官网V62/04648-06XE的批量USD价格：1.65（1000+）

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