The TPS3836, TPS3837, TPS3838 families of supervisory circuits provide circuit initialization and timing supervision, primarily for DSP and processor-based systems.

During power on, RESET is asserted when the supply voltage VDD becomes higher than 1.1 V. Thereafter, the supervisory circuit monitors VDD and keeps RESET output active as long as VDD remains below the threshold voltage VIT . An internal timer delays the return of the output to the inactive state (high) to ensure proper system reset. The delay time starts after VDD has risen above the threshold voltage VIT.

When CT is connected to GND a fixed delay time of typical 10 ms is asserted. When connected to VDD the delay time is typically 200 ms.

When the supply voltage drops below the threshold voltage VIT, the output becomes active (low) again.

All the devices of this family have a fixed-sense threshold voltage VIT set by an internal voltage divider.

The TPS3836 has an active-low push-pull RESET output. The TPS3837 has active-high push-pull RESET, and TPS3838 integrates an active-low open-drain RESET output.

The product spectrum is designed for supply voltages of 1.8 V, 2.5 V, 3 V, and 3.3 V. The circuits are available in a 5-pin SOT-23 package. The TPS3836-Q-Q1, TPS3837-Q-Q1, TPS3838-Q-Q1 families are characterized for operation over a temperature range of –40°C to 125°C.

• Qualified for Automotive Applications
• Customer-Specific Configuration Control Can Be Supported Along With Major-Change Approval
• ESD Protection Exceeds 2000 V Per MIL-STD-883, Method 3015; Exceeds 200 V Using Machine Model (C = 200 pF, R = 0)
• Supply Current of 220 nA (Typ)
• Precision Supply Voltage Supervision Range: 1.8 V, 2.5 V, 3.0 V, 3.3 V
• Power-On Reset Generator With Selectable Delay Time of 10 ms or 200 ms
• Push/Pull RESET Output (TPS3836), RESET Output (TPS3837), or Open-Drain RESET Output (TPS3838)
• Manual Reset
• 5-Pin SOT-23 Package
• Temperature Range –40°C to 125°C
• Applications Include
  • Applications Using Automotive Low-Power DSPs, Microcontrollers, or Microprocessors
  • Battery-Powered Equipment
  • Intelligent Instruments
  • Wireless Communication Systems
  • Automotive Systems

• LMP90100 - 具有真连续背景校准的多通道、低功耗 24 位传感器 AFE
• THS1207 - 12 位，6MSPS 同步采样四通道 ADC；包括并行 DSP/uP I/F 通道自动扫描
• THS1041 - 10 位、40MSPS 低功耗 ADC 具有 PGA 和内部精密钳位
• ADS62P49 - 具有 DDR LVDS 和并行 CMOS 输出的双通道 14 位、250MSPS ADC
• PCM1808 - 具有单端输入的 99dB SNR 立体声 ADC
• TPS2818 - 具有内部稳压器的反向高速 MOSFET 驱动器
• TLC540 - 8 位 75kSPS ADC 串行输出，片上 12 通道 模拟 Mux，11 通道
• TPS7A7100 - 单路输出、极低输入、可配置固定（0.9 至 5.0V）1A 低压降线性稳压器
• TCA6416A - 低压 16 位 I2C 和 SMBus I/O 扩展器
• TL7702A - 具有可编程 UV 阈值和重置时间延迟的单 SVS