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.

The TPS3803 and TPS3805 devices are characterized for operation over a temperature range of -40°C to +85°C.

• 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)
• Temperature Range: -40°C to +85°C
• 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

All trademarks are the property of their respective owners.

• Number of supplies monitored
• 1
• Threshold voltage 1 (Typ) (V)
• Adjustable, 1.4
• Features
• Ease-of-use
• Reset threshold accuracy (%)
• 1.5
• Output driver type/reset output
• Active-low, Open-drain
• Time delay (ms)
• 0
• Rating
• Catalog
• Watchdog timer WDI (sec)
• None
• Operating temperature range (C)
• -40 to 85

TPS3803的完整型号有：TPS3803-01DCKR、TPS3803G15DCKR，以下是这些产品的关键参数及官网采购报价：

TPS3803-01DCKR，工作温度：-40 to 85，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：NIPDAU，TI官网TPS3803-01DCKR的批量USD价格：.346（1000+）

TPS3803G15DCKR，工作温度：PropertyValue，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TPS3803G15DCKR的批量USD价格：.346（1000+）

PSPICE-FOR-TI — 适用于 TI 设计和模拟工具的 PSpice

PSpice for TI 可提供帮助评估模拟电路功能的设计和仿真环境。此功能齐全的设计和仿真套件使用 Cadence 的模拟分析引擎。PSpice for TI 可免费使用，包括业内超大的模型库之一，涵盖我们的模拟和电源产品系列以及精选的模拟行为模型。

借助?PSpice for TI 的设计和仿真环境及其内置的模型库，您可对复杂的混合信号设计进行仿真。创建完整的终端设备设计和原型解决方案，然后再进行布局和制造，可缩短产品上市时间并降低开发成本。

在?PSpice for TI 设计和仿真工具中，您可以搜索 TI (...)

PMP1941 SCHEMATIC

此参考设计实现了对备用电池和充电器的全面监测。它支持在 12Vdc/24Vdc 电源和 12V/24V 铅酸电池间切换，电池恒流充电的电流典型值为 1A，具有适用于电池和输入源的电池维护型浮充和监测电路。

TIDA-010008 — 用于针对电网应用提供瞬态保护且基于平缓钳位 TVS 的参考设计

该参考设计采用多种方法，使用平缓钳位浪涌保护措施、ESD 器件、电子保险丝或负载开关，来保护交流或直流模拟输入、直流模拟输出、交流或直流二进制输入、带高侧或低侧驱动器的数字输出、LCD 偏置电源、USB 接口（电源和数据）和具有 24、12 或 5V 输入的板载电源（用于多个电网应用），使其免受过压、过载和瞬变（1.2/50us，42Ω）的影响。该设计监测温度、湿度、磁场和电源以进行诊断。

PMP21103 — 具备平稳过渡到辅助的 5 类 PoE PD (12V/2.5A) 电源参考设计

This reference design implements an IEEE802.3bt compliant Class 5 Power over Ethernet (PoE) Powered Device (PD) with smooth transition between the PoE input and an auxiliary supply connected to the output. The design consists of a 12-V/2.5-A active clamp forward converter utilizing the (...)