Key Selection Information
| Selection Parameter | Confirmed Information |
|---|---|
| Rail Option | G33 fixed 3.3-V-class threshold option |
| Threshold Accuracy | 0.5% typical stated for applicable thresholds |
| Quiescent Current | 2.4 µA typical |
| Reset Delay | CT-programmable from 1.25 ms to 10 s; preset options when CT configured accordingly |
| Manual Reset | Active-low MR input |
| Output | Open-drain RESET |
| Temperature | −40°C to +125°C family specification |
| Exact Package / Packing | SOT-23 (DBV), 6 pins; 3000-piece reel |
Product Overview
TPS3808G33DBVR focuses on one supervised rail but gives the designer wide control over how long reset remains asserted after voltage recovery. An external CT capacitor can program delay from milliseconds to seconds.
That delay flexibility is useful for FPGAs, processors or power trees that need oscillator, regulator or memory rails to settle before reset release. It is a different system role from TPS3106, whose key value is monitoring an additional SENSE node.
The supervisor consumes only a few microamps and uses an open-drain reset plus manual-reset input, fitting portable and multi-source reset networks.
For related devices, see HKEQGOO’s Supervisors category.
Technical Specifications
| Parameter | Verified Information |
|---|---|
| Manufacturer | Texas Instruments |
| Exact MPN | TPS3808G33DBVR |
| Rail Option | G33 fixed 3.3-V-class threshold option |
| Threshold Accuracy | 0.5% typical stated for applicable thresholds |
| Quiescent Current | 2.4 µA typical |
| Reset Delay | CT-programmable from 1.25 ms to 10 s; preset options when CT configured accordingly |
| Manual Reset | Active-low MR input |
| Output | Open-drain RESET |
| Temperature | −40°C to +125°C family specification |
| Exact Package / Packing | SOT-23 (DBV), 6 pins; 3000-piece reel |
| Manufacturer Status | Active / Production |
| Part Marking | See current TPS3808 package addendum |
Functional Highlights
Programmable delay decouples voltage recovery from processor release
The rail can cross threshold quickly while reset remains low until clocks, references or other rails are stable.
Manual reset shares the same timing path
A user/watchdog/controller can force reset, and release still follows the configured supervisor behavior.
Design Considerations
- Choose CT from the worst-case required startup settle time, including capacitor tolerance/leakage.
- Confirm the G33 threshold is compatible with the processor’s minimum valid 3.3-V supply.
- Size the open-drain pull-up for reset rise time and any shared fault sources.
Product Status and Exact Order Code
Texas Instruments lists TPS3808G33DBVR as Active exact TPS3808G33DBVR; SOT-23 (DBV), 6 pins; 3000-piece tape and reel; current family specified −40°C to +125°C.
Related Engineering Resources
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