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Voltage monitor with watchdog timer

Inventory: 14,090
Custom reel may be available

Download data sheet for TPS3828
  |   View additional information for TPS3828

Same as: TPS3828-33DBVRG4 

Packaging information

Package | Pins SOT-23 (DBV) | 5
Operating temperature range (℃) I (-40 to 85)
Package qty | Carrier: 3,000 | LARGE T&R
Custom reel may be available
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Quality information

RoHS Yes
Lead finish / Ball material NIPDAU
MSL rating / Peak reflow Level-1-260C-UNLIM
Material content View
DPPM / MTBF / Fit rate View
Qualification summary View
Ongoing reliability monitoring View
Device marking View


  • Power-On Reset Generator With Fixed Delay Time of 200 ms (TPS3823/4/5/8) or 25 ms (TPS3820)
  • Manual Reset Input (TPS3820/3/5/8)
  • Reset Output Available in Active-Low (TPS3820/3/4/5), Active-High (TPS3824/5), and Open Drain (TPS3828)
  • Supply Voltage Supervision Range:
    2.5 V, 3 V, 3.3 V, 5 V
  • Watchdog Timer (TPS3820/3/4/8)
  • Supply Current of 15 µA (Typical)
  • 5-Pin SOT-23 Package
  • Temperature Range: −40°C to 85°C

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The TPS382x family of supervisors provide circuitinitialization and timing supervision, primarily for DSP and processor-based systems. During poweron, RESET asserts when the supply voltage VDD becomesgreater than 1.1 V. Thereafter, the supply voltage supervisor monitors VDDand keeps RESET active low as long as VDD remainsless than the threshold voltage, VIT−. An internal timer delays the returnof the output to the inactive state (high) to ensure proper system reset. The delay time,td, starts after VDD has risen above the thresholdvoltage (VIT− + VHYS). When the supply voltage dropsbelow the threshold voltage VIT−, the output becomes active (low) again. Noexternal components are required. All the devices of this family have a fixed-sense thresholdvoltage, VIT–, set by an internal voltage divider. The TPS382x family alsooffers watchdog time out options of 200 ms (TPS3820) and 1.6 s (TPS3823/4/8).

Qty Price
1-99 $1.41
100-249 $1.09
250-999 $0.80
1,000+ $0.57

Alternative carriers

Part number TPS3828-33DBVT
Package qty | Carrier 250 | SMALL T&R
Inventory 7,771
Qty | Price (USD) 1ku | $0.66