TPS3809I50DBVRG4 Texas Instruments Integrated Circuit (SOT23 (3-Pin)) In Stock
TPS3809I50DBVRG4 is a single-channel fixed-threshold 5.0 V voltage supervisor and reset IC from Texas Instruments in a 3-pin SOT-23 package. It monitors a supply rail and asserts an active-low reset signal when the voltage drops below the preset threshold, ensuring reliable microcontroller startup. Available from stock with RoHS e4 compliance and worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- SOT23 (3-Pin)
- Pin Count
- 3
- Lifecycle
- OBSOLETE
- Datasheet
- TPS3809I50DBVRG4 Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.2928(MOQ 595)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of TPS3809I50DBVRG4?
- Single-channel fixed 5.0 V threshold voltage supervisor with active-low reset output for reliable MCU power-on sequencing
- Tiny 3-pin SOT-23 (R-PDSO-G3) package requiring minimal PCB area for tight space-constrained embedded designs
- RoHS e4 lead-free plastic/epoxy construction with no external programming components needed for fixed 5.0 V rail monitoring
What is TPS3809I50DBVRG4 used for?
TPS3809I50DBVRG4 is used to supervise 5 V supply rails in microcontroller-based systems, ensuring the processor is held in reset until the power supply reaches a stable operating level. It is commonly placed on industrial PLC boards, USB-powered devices, and 5 V microcontroller evaluation platforms where a simple, fixed-threshold reset function is required without external resistor dividers. The 3-pin SOT-23 footprint allows it to be placed adjacent to a 5 V LDO or DC-DC converter output with a minimal 2-component circuit (IC plus decoupling capacitor).
What are the specifications of TPS3809I50DBVRG4?
| YTEOL | 0 |
| Adjustable Threshold | NO |
| Analog IC - Other Type | VOLTAGE SUPERVISOR/RESET IC |
| JESD-30 Code | R-PDSO-G3 |
| JESD-609 Code | e4 |
| Number of Channels | 1 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TO-236 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, LOW PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Current-Max (Isup) | 0.025mA |
| Supply Voltage-Max (Vsup) | 6V |
| Supply Voltage-Min (Vsup) | 2V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.95mm |
| Terminal Position | DUAL |
| Threshold Voltage-Nom | +4.55V |
| Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED |
| Package | SOT23 (3-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
| Country of Origin | Mainland China, Taiwan |
Where can I find the TPS3809I50DBVRG4 datasheet?
TPS3809I50DBVRG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for TPS3809I50DBVRG4?
Compatible alternatives and drop-in replacements for TPS3809I50DBVRG4:
Frequently Asked Questions
At what voltage threshold does TPS3809I50DBVRG4 assert its reset output, and how is this threshold set?
TPS3809I50DBVRG4 asserts its active-low reset when the monitored rail falls below a fixed 5.0 V internal threshold. The threshold is factory-programmed and requires no external resistors or programming pins, making the design simpler and eliminating tolerance errors from external voltage dividers. The reset releases after the supply rises above the 5.0 V threshold plus internal hysteresis.
For a 5 V USB-powered MCU board, what reset time delay does TPS3809I50DBVRG4 provide and why is it important for safe startup?
TPS3809I50DBVRG4 includes an internal reset timeout delay (typically 200 ms for the I-suffix variant) that holds the reset signal asserted after the supply crosses the 5.0 V threshold. This 200 ms delay ensures the power supply is fully stable and any external bulk capacitors are charged before the microcontroller begins executing firmware, preventing code execution from partially-charged rails.
How does TPS3809I50DBVRG4's 3-pin SOT-23 package affect BOM cost and PCB area compared to a multi-channel supervisor?
The 3-pin SOT-23 package costs less than $0.10 in volume and occupies approximately 2.9 mm x 1.6 mm of PCB area, versus a 6-pin to 8-pin multi-channel supervisor that may occupy 5 mm x 3 mm. For single-rail 5 V designs that only need 1 reset channel, TPS3809I50DBVRG4 reduces BOM cost and saves 10 mm² to 15 mm² of PCB area compared to over-specified multi-channel alternatives.
Related Guides
CSD87313DMS Synchronous Buck Power Stage Design Guide
Design a compact CSD87313DMS synchronous buck stage with practical guidance for loss, gate drive, PCB layout, EMI, thermal validation, and sourcing.
Aug 6, 2026
STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection
Choose STEF05SGR for 5 V overcurrent protection by checking current-limit margin, inrush, thermal loss, fault response, and sourcing.
Aug 6, 2026
C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC
Select C0402C103K3RACTU by voltage margin, X7R behavior, tolerance, 0402 assembly risk, and qualified alternatives.
Aug 4, 2026
STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security
Choose STM32H753VIT6 by evaluating memory architecture, LQFP-100 pin fit, connectivity, security, power, and sourcing tradeoffs.
Aug 4, 2026
Why Buy from FindMyChip
About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
More from Texas Instruments
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 595+ | $0.3378 | $200.99 |
| 770+ | $0.3266 | $251.48 |
| 1025+ | $0.2928 | $300.12 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“Response time is incredible — usually under 4 hours. They understand that production lines can't wait.”
You May Also Like
ACS770ECB-200U-PFF-T
Allegro Microsystems
Integrated Circuit
ACS770KCB-150U-PFF-T
Allegro Microsystems
Integrated Circuit
MC33901WEF
NXP
Integrated Circuit
MC7808BDTRKG
ON Semiconductor
Integrated Circuit
PA94EC
Apex Microtechnology
Integrated Circuit
AP7315-28SR-7
Diodes Inc.
Integrated Circuit
74HCT245D
Nexperia
Integrated Circuit
CY62256VNLL-70ZXCT
Cypress Semiconductor
Integrated Circuit
EPM7032AETC44-4N
Intel
Integrated Circuit
EPM3512AQC208-10N
Intel
Integrated Circuit
EPM3256ATC144-7N
Intel
Integrated Circuit
EPM3256AQC208-7N
Intel
Integrated Circuit
EPM3256AQC208-10N
Intel
Integrated Circuit
EPM3128ATC100-7N
Intel
Integrated Circuit
EPM1270F256C4N
Intel
Integrated Circuit
EPF8282ATC100-4N
Intel
Integrated Circuit
EPF6016QC208-2N
Intel
Integrated Circuit
EPF6016ATC144-3N
Intel
Integrated Circuit
EPF10K30ATC144-3N
Intel
Integrated Circuit
EPC2TI32N
Intel
Integrated Circuit
EPC2LC20
Intel
Integrated Circuit
EP3SL150F1152C4N
Intel
Integrated Circuit
EP2SGX60DF780C5N
Intel
Integrated Circuit
EP2SGX60CF780C5N
Intel
Integrated Circuit