Key Selection Information
| Selection Parameter | Confirmed Information |
|---|---|
| Primary Rail | K33 fixed 3.3-V-class supervision option |
| Architecture | Primary VDD supervisor plus separate SENSE input/output path |
| Threshold Accuracy | 0.75% stated family trip-point accuracy |
| Supply Current | 1.2 µA typical |
| Reset Delay | 130 ms power-on reset delay stated |
| Output | Active-low open-drain reset for TPS3106 |
| Manual Reset | MR input forces reset |
| Exact Package / Packing | SOT-23 (DBV), 6 pins; 3000-piece reel |
Product Overview
TPS3106K33DBVR supervises a primary 3.3-V-class supply while also exposing a SENSE input for monitoring another voltage node through an external divider. That makes it useful for processors with separate core and I/O rails.
The primary reset stays asserted until the fixed rail has recovered and the internal delay expires, providing deterministic processor startup. The auxiliary sense path can flag a second rail without adding another supervisor IC.
At roughly 1.2 µA typical supply current, the device suits battery-powered or always-on supervisory domains. The exact direct TI datasheet is used because this batch source does not store a local/R2 copy.
For related devices, see HKEQGOO’s Supervisors category.
Technical Specifications
| Parameter | Verified Information |
|---|---|
| Manufacturer | Texas Instruments |
| Exact MPN | TPS3106K33DBVR |
| Primary Rail | K33 fixed 3.3-V-class supervision option |
| Architecture | Primary VDD supervisor plus separate SENSE input/output path |
| Threshold Accuracy | 0.75% stated family trip-point accuracy |
| Supply Current | 1.2 µA typical |
| Reset Delay | 130 ms power-on reset delay stated |
| Output | Active-low open-drain reset for TPS3106 |
| Manual Reset | MR input forces reset |
| Exact Package / Packing | SOT-23 (DBV), 6 pins; 3000-piece reel |
| Manufacturer Status | Active / Production |
| Part Marking | See current TPS31xx package addendum |
Functional Highlights
One small supervisor can watch two voltage conditions
VDD reset and auxiliary SENSE reduce the need for a second comparator/supervisor on dual-rail processors.
Open-drain reset supports shared reset networks
Multiple reset/fault sources can pull one reset line low when the pull-up and timing are designed correctly.
Design Considerations
- Set the SENSE divider so its threshold and leakage meet the secondary-rail requirement.
- Size the open-drain reset pull-up for rise time and all devices sharing the net.
- Confirm K33 fixed threshold against the actual 3.3-V minimum operating voltage of the processor.
Product Status and Exact Order Code
Texas Instruments lists TPS3106K33DBVR as Active exact TPS3106K33DBVR; SOT-23 (DBV), 6 pins; 3000-piece tape and reel per current TI package information.
Related Engineering Resources
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