The TPS3809 family of supervisory circuits provides circuit initialization and timing supervision, primarily for DSPs and processor-based systems.

During power-on, RESET is asserted when the supply voltage V_DD becomes higher than 1.1 V. Thereafter, the supervisory circuit monitors V_DD and keeps RESET active as long as V_DD remains below the threshold voltage V_IT. An internal timer delays the return of the output to the inactive state (high) to ensure proper system reset. The delay time, t_d(typ) = 200 ms, starts after V_DD has risen above the V_IT. When the supply voltage drops below the V_IT, the output becomes active (low) again. No external components are required. All the devices of this family have a fixed-sense V_IT set by an internal voltage divider.

The product spectrum is designed for supply voltages of 2.5 V, 3 V, 3.3 V, and 5 V. The circuits are available in a 3-pin SOT-23 package. The TPS3809 devices are characterized for operation over a temperature range of -55°C to 125°C.

• Controlled Baseline
  • One Assembly Site
  • One 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)
• 3-Pin SOT-23 Package
• Supply Current of 9 μA (Typical)
• Precision Supply Voltage Monitor 2.5 V, 3 V, 3.3 V, 5 V
• Power-On Reset Generator With Fixed Delay Time of 200 ms
• Pin-for-Pin Compatible With MAX 809

(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.

• Number of supplies monitored
• 1
• Threshold voltage 1 (Typ) (V)
• 2.6, 2.9, 4.5
• Features
• Ease-of-use
• Reset threshold accuracy (%)
• 2.2
• Output driver type/reset output
• Active-low, Push-pull
• Time delay (ms)
• 200
• Rating
• HiRel Enhanced Product
• Watchdog timer WDI (sec)
• None
• Operating temperature range (C)
• -55 to 125

TPS3809-EP的完整型号有：TPS3809I50MDBVREP、TPS3809K33MDBVREP、TPS3809L30MDBVREP、V62/06636-01XE、V62/06636-02XE、V62/06636-03XE，以下是这些产品的关键参数及官网采购报价：

TPS3809I50MDBVREP，工作温度：-55 to 125，封装：SOT-23 (DBV)-3，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：NIPDAU，TI官网TPS3809I50MDBVREP的批量USD价格：1.3（1000+）

TPS3809K33MDBVREP，工作温度：-55 to 125，封装：SOT-23 (DBV)-3，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：NIPDAU，TI官网TPS3809K33MDBVREP的批量USD价格：1.326（1000+）

TPS3809L30MDBVREP，工作温度：-55 to 125，封装：SOT-23 (DBV)-3，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：NIPDAU，TI官网TPS3809L30MDBVREP的批量USD价格：1.326（1000+）

V62/06636-01XE，工作温度：-55 to 125，封装：SOT-23 (DBV)-3，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：NIPDAU，TI官网V62/06636-01XE的批量USD价格：1.326（1000+）

V62/06636-02XE，工作温度：-55 to 125，封装：SOT-23 (DBV)-3，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：NIPDAU，TI官网V62/06636-02XE的批量USD价格：1.326（1000+）

V62/06636-03XE，工作温度：-55 to 125，封装：SOT-23 (DBV)-3，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：NIPDAU，TI官网V62/06636-03XE的批量USD价格：1.3（1000+）

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