Automotive Catalog Processor Supervisory Circuits

The TPS382x family of supervisors provides circuit initialization and Timing supervision, primarily for DSP and processor-based systems.
During power-on, RESET is asserted when supply voltage VDD becomes higher than 1.1 V. Thereafter, the supply Voltage Supervisor monitors VDD and keeps RESET 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, td, starts after VDD has risen above the threshold voltage VIT?. When the supply voltage drops below the threshold voltage VIT?, the output becomes active (low) again. No external components are required. All the devices of this family have a fixed-sense threshold voltage VIT? set by an internal voltage divider.
The TPS3820/3/5/8 devices incorporate a manual reset input, MR. A low level at MR causes RESET to become active. The TPS3824/5 devices include a high-level output RESET. TPS3820/3/4/8 have a watchdog Timer that is periodically triggered by a positive or negative transition at WDI. When the supervising system fails to retrigger the watchdog circuit within the time-out interval, ttout, RESET becomes active for the time period td. This event also reinitializes the watchdog Timer Leaving WDI unconnected disables the watchdog.
In applications where the input to the WDI pin may be active (transitioning high and low) when the TPS3820/3/4/8 is asserting RESET, the TPS3820/3/4/8 does not return to a non-reset state when the input voltage is above Vt. If the application requires that input to WDI is active when RESET is asserted, WDI must be decoupled from the active signal. This CAN be accomplished by using an N-channel FET in series with the WDI pin, with the Gate of the FET connected to the RESET output as shown in Figure 1.
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 5-pin SOT23-5 package. The TPS382x-xxQ-Q1 devices are characterized for operation over a temperature range of ?40C to 125C, and are qualified in accordance with AEC-Q100 stress test qualification for integrated circuits.
By Texas Instruments
Part Manufacturer Description Datasheet Samples
TPS3820-50DBVT Texas Instruments Voltage supervisor (reset IC) with watchdog and manual reset 5-SOT-23 -40 to 85
TPS3820-50DBVRG4 Texas Instruments Voltage Monitor With Watchdog Timer 5-SOT-23 -40 to 85
TPS3820-33DBVRG4 Texas Instruments Voltage supervisor (reset IC) with watchdog and manual reset 5-SOT-23 -40 to 85
TPS3820-50QDBVRQ1 Texas Instruments Automotive voltage supervisor (reset IC) with watchdog and manual reset 5-SOT-23 -40 to 125
TPS3820-33DBVR Texas Instruments Voltage supervisor (reset IC) with watchdog and manual reset 5-SOT-23 -40 to 85
TPS3820-50DBVRQ1G4 Texas Instruments Automotive voltage supervisor (reset IC) with watchdog and manual reset 5-SOT-23 -40 to 125
TPS3820-33DBVT Texas Instruments Voltage supervisor (reset IC) with watchdog and manual reset 5-SOT-23 -40 to 85
TPS3820-33DBVTG4 Texas Instruments Voltage supervisor (reset IC) with watchdog and manual reset 5-SOT-23 -40 to 85
TPS3820-50DBVR Texas Instruments Voltage supervisor (reset IC) with watchdog and manual reset 5-SOT-23 -40 to 85
TPS3820-33QDBVRQ1 Texas Instruments Automotive voltage supervisor (reset IC) with watchdog and manual reset 5-SOT-23 -40 to 125
TPS3820-33-Q1 's PackagesTPS3820-33-Q1 's pdf datasheet
TPS3820-33QDBVRQ1 SOT-23




TPS3820-33-Q1 Pinout, Pinouts
TPS3820-33-Q1 pinout,Pin out
This is one package pinout of TPS3820-33-Q1,If you need more pinouts please download TPS3820-33-Q1's pdf datasheet.

TPS3820-33-Q1 Application circuits
TPS3820-33-Q1 circuits
This is one application circuit of TPS3820-33-Q1,If you need more circuits,please download TPS3820-33-Q1's pdf datasheet.


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