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Texas Instruments

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
   − Battery-Powered Equipment
   − Intelligent Instruments
   − Wireless Communication Systems
   − Automotive Systems

other parts : TPS3836E18QDBVRQ1  TPS3836H30-Q1  TPS3836H30QDBVRQ1  TPS3836J25-Q1  TPS3836K33-Q1  TPS3836L30-Q1  TPS3837E18-Q1  TPS3837E18QDBVRQ1  TPS3837J25-Q1  TPS3837J25QDBVRQ1  
TPS3836E18-Q1 PDF


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