TPS3123J12DBVTG4 Texas Instruments Integrated Circuit (SOT23 (5-Pin)) In Stock
The TPS3123J12DBVTG4 is a processor supervisor IC from Texas Instruments with 1.2V threshold and watchdog timer in a SOT23-5 package. It features a manual reset input, power-on reset generator, and operates down to 0.85V. From $0.60 in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- SOT23 (5-Pin)
- Pin Count
- 5
- Lifecycle
- OBSOLETE
- Datasheet
- TPS3123J12DBVTG4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Integrated watchdog timer with manual reset input simplifies microcontroller supervision without external components
- Ultra-low 0.85V minimum operating voltage with 1.2V fixed threshold enables reliable monitoring in low-voltage systems
- Compact SOT23-5 footprint with RoHS-compliant construction ideal for portable and space-constrained embedded designs
Applications
The TPS3123J12DBVTG4 is designed to monitor processor supply rails in embedded systems, ensuring the microcontroller is properly reset during power-up or supply voltage faults. It is commonly used in industrial controllers, consumer electronics, and automotive auxiliary circuits where reliable processor startup and watchdog supervision are essential. The integrated manual reset input simplifies factory testing and field debugging procedures.
Specifications
| YTEOL | 0 |
| Additional Feature | MANUAL RESET INPUT; POWER-ON RESET GENERATOR |
| Adjustable Threshold | NO |
| Analog IC - Other Type | VOLTAGE SUPERVISOR/RESET IC |
| JESD-30 Code | R-PDSO-G5 |
| JESD-609 Code | e4 |
| Number of Channels | 1 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSOP5/6,.11,37 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, LOW PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Current-Max (Isup) | 0.03mA |
| Supply Voltage-Max (Vsup) | 3.3V |
| Supply Voltage-Min (Vsup) | 0.85V |
| Supply Voltage-Nom (Vsup) | 1.2V |
| Surface Mount | YES |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.95mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | SOT23 (5-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for TPS3123J12DBVTG4:
Frequently Asked Questions
What is the reset threshold voltage of the TPS3123J12DBVTG4?
The TPS3123J12DBVTG4 has a fixed reset threshold of 1.2V, triggering a reset output when the monitored supply falls below this level. The device asserts reset during power-on and holds it until the supply stabilizes above the threshold with an integrated power-on reset delay for reliable microcontroller startup.
Does the TPS3123J12DBVTG4 include a watchdog timer?
Yes, the TPS3123J12DBVTG4 integrates a watchdog timer that monitors processor activity and generates a reset if the processor fails to toggle the WDI input within the specified timeout period. This prevents system lockups by automatically resetting the microcontroller when firmware becomes unresponsive.
What package does the TPS3123J12DBVTG4 use and is it lead-free?
The TPS3123J12DBVTG4 is housed in a SOT23-5 (5-pin TSOP) package with a very small footprint of approximately 0.11 x 0.37 inches. The G4 suffix confirms it is RoHS and REACH compliant with lead-free, halogen-free construction suitable for modern environmental standards.
What is the minimum operating voltage of the TPS3123J12DBVTG4?
This supervisor operates with a minimum supply voltage of 0.85V, making it compatible with extremely low-voltage systems and sub-1V processor power domains. The device can monitor rails as low as 0.85V while still providing reliable reset and watchdog supervision across the entire operating range.
What are typical applications for the TPS3123J12DBVTG4?
The TPS3123J12DBVTG4 is used in microcontroller-based systems requiring reliable power-on reset, supply voltage monitoring, and watchdog supervision. Common applications include embedded processor boards, IoT sensor nodes, industrial PLCs, and portable consumer electronics where preventing uncontrolled processor behavior during power events is critical.
Related Guides
TPS54160DGQR Selection Guide: How to Choose a 60V Step-Down Buck Converter
Complete selection guide for the TPS54160DGQR 60V/1.5A step-down converter. Compare specs, alternatives, and sourcing options for industrial and automotive designs.
May 20, 2026
LMV932MM Dual Low-Voltage CMOS Op-Amp: Application Design Guide
Complete application design guide for the LMV932MM dual rail-to-rail CMOS op-amp: supply decoupling, RRIO design rules, stability, and recommended circuits for 1.8V–5.5V battery-powered systems.
May 20, 2026
TL084CN Equivalent and Replacements: JFET-Input Quad Op-Amp Comparison Guide
Compare TL084CN with TL074, LF347, and LM324 quad op-amps. Pin-compatible equivalents, key specs, and when to choose each for your analog design.
May 20, 2026
TPS386000RGPR Quad Voltage Supervisor: Selection and Sourcing Guide (2025)
Compare TPS386000RGPR with TPS386040RGPR, TPS3700, and TPS3823 voltage supervisors. Key specs, threshold programming, watchdog options, and sourcing tips.
May 20, 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.
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.”