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Texas Instruments TPS3110E09DBVTG4
- Part No.:
- TPS3110E09DBVTG4
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
TPS3110E09DBVTG4.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:4,189
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Product details
Overview
TPS3110E09DBVTG4 from Texas Instruments is an ultralow-quiescent-current voltage supervisor IC with integrated watchdog timer, designed for power-on reset and runtime supervision of microprocessors operating at 0.9V supply. It features a fixed 0.86V VDD threshold (±0.75% accuracy), 1.2μA typical supply current, 130ms reset delay, push-pull active-low RESET output, and WDI watchdog input. It is used in battery-powered DSP systems requiring reliable low-voltage reset and fault detection.
For engineers reviewing the TPS3110E09DBVTG4 datasheet, TPS3110E09DBVTG4 pinout, TPS3110E09DBVTG4 application, or TPS3110E09DBVTG4 equivalent, key selection criteria include its 0.86V trip point, –40°C to 125°C operation, SOT-23-6 package, watchdog timeout of 1.1s (typ), and compatibility with sub-1V supply rails in portable embedded designs.
Technical Context
The TPS3110E09DBVTG4 implements a precision bandgap-based voltage reference and comparator architecture to monitor VDD against a factory-trimmed 0.86V threshold. Its internal reset timer initiates only after VDD exceeds VIT– + VHYS (≥0.88V), ensuring stable power-up sequencing.
It integrates a digital watchdog circuit triggered by edges on WDI; failure to toggle WDI within 1.1s (typ) forces RESET assertion. The push-pull RESET output drives high without external pull-up, supporting direct interface to µP reset inputs across 0.4V–3.6V VDD range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDD Threshold (VIT–) | 0.86 V (±0.75% at 25°C); enables reliable reset assertion for 0.9V-core systems |
| Supply Current (IDD) | 1.2 μA typical at VDD > VIT–; extends battery life in always-on monitoring applications |
| Reset Delay (tD) | 130 ms nominal; provides sufficient time for power rail stabilization before processor release |
| Watchdog Timeout (tT(OUT)) | 1.1 s typical; detects firmware hangs in microprocessor-based systems |
| Operating Temperature | –40°C to 125°C; supports industrial and automotive under-hood environments |
| RESET Output Type | Active-low push-pull; eliminates need for external pull-up resistor on reset line |
| SENSE Input Threshold | 0.551 V ±1.5%; allows monitoring of auxiliary rails (e.g., 1.6V, 3.3V) via resistor divider |
Pinout & Package
TPS3110E09DBVTG4 is housed in a 6-pin SOT-23 (DBV) package, 2.90 mm × 2.80 mm footprint, rated for –40°C to 125°C junction temperature.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: RESET | Active-low push-pull output | Drives µP reset pin directly; sinks 5 mA max; asserts low during VDD undervoltage or WDI timeout |
| 2: GND | Ground reference | Common return path for all internal circuits and external decoupling capacitor |
| 3: MR | Manual reset input | Active-low; internal 100 kΩ pullup; forces RESET low when pulled to GND |
| 4: VDD | Supply and monitored rail input | Powers device and provides primary supervision source; functional down to 0.4V |
| 5: SENSE | Auxiliary voltage monitor input | Compares external rail (via resistor divider) to 0.551V reference; OR-wired with VDD/MR logic |
| 6: WDI | Watchdog timer input | Edge-sensitive; rising or falling edge resets timeout counter; open-drain compatible |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow supply current | 1.2 μA typical enables multi-year operation on coin-cell batteries in maintenance-free IoT nodes |
| 0.86V precision VDD threshold | ±0.75% accuracy ensures deterministic reset behavior across temperature for 0.9V logic domains |
| Integrated watchdog timer | 1.1s timeout (typ) detects stalled firmware without external components or µP intervention |
| Push-pull RESET output | Eliminates external pull-up resistor, reducing BOM count and PCB area in space-constrained designs |
| SENSE input with 0.551V reference | Supports monitoring of secondary rails (e.g., 1.6V, 3.3V) using two-resistor dividers with <1% tolerance |
Applications
| Battery-Powered DSP Systems | Low-Voltage Microcontroller Supervision |
|---|---|
Use Scenario: Monitoring dual-cell NiMH battery (1.6V–2.4V) while supervising 0.9V DSP core voltage. IC Role / Device Role / Timing Role: TPS3110E09DBVTG4 monitors VDD for core rail integrity and SENSE for battery level via resistor divider; asserts RESET if either falls below threshold. Use Value: Prevents DSP corruption during brownout; enables graceful shutdown before battery depletion. |
Use Scenario: Ensuring clean power-up and runtime fault detection for ARM Cortex-M0+ MCU running at 0.9V. IC Role / Device Role / Timing Role: TPS3110E09DBVTG4 provides 130ms POR delay and watchdog supervision via WDI pin tied to GPIO. Use Value: Guarantees deterministic boot sequence and recovers from infinite loops without host intervention. |
| Industrial Sensor Nodes | Portable Medical Devices |
Use Scenario: Long-life wireless sensor node powered by Li-SOCl₂ battery (3.6V), with 0.9V ultra-low-power MCU. IC Role / Device Role / Timing Role: TPS3110E09DBVTG4 supervises MCU supply and triggers watchdog on sensor data acquisition timeout. Use Value: Achieves <2μA system quiescent current while maintaining full fault coverage. |
Use Scenario: Wearable ECG monitor using 0.9V ASIC and coin-cell battery; requires fail-safe reset on voltage sag. IC Role / Device Role / Timing Role: TPS3110E09DBVTG4 asserts RESET at 0.86V VDD threshold and supports manual reset via tactile switch on MR. Use Value: Meets IEC 60601-1 safety requirements for guaranteed reset under low-battery conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3110E09DBVR | Same electrical specs and pinout; tape-and-reel packaging (3000-unit reel) vs. cut-tape (250-unit reel) for TPS3110E09DBVTG4 | No functional difference; optimized for high-volume automated assembly | Select TPS3110E09DBVR for production runs ≥500 units; TPS3110E09DBVTG4 suits prototyping and low-volume builds |
| TPS3823-09DBVR | 0.9V threshold (±1.5%), 1.8μA IDD, no watchdog, open-drain RESET, same SOT-23-6 package | Lacks WDI functionality; requires external pull-up; lower accuracy and higher current than TPS3110E09DBVTG4 | Choose only if watchdog is unnecessary and cost sensitivity outweighs accuracy/power trade-offs |
Compared with TPS3110E09DBVTG4, TPS3110E09DBVR offers identical performance in volume-optimized packaging, while TPS3823-09DBVR sacrifices watchdog capability, accuracy, and quiescent current for lower unit cost in non-critical applications.
Availability
TPS3110E09DBVTG4 is available at Aetrix Electronics and suitable for battery-powered DSP systems, low-voltage microcontroller supervision, industrial sensor nodes, portable medical devices, and wireless communication equipment requiring stable component supply across extended temperature ranges.
Supply support for TPS3110E09DBVTG4 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor company specializing in analog and embedded processing technologies, with leadership in power management, signal chain, and real-time control ICs.
The TPS31xx family was engineered for ultra-low-power voltage supervision in battery-critical and thermally demanding applications, targeting DSP, MCU, and ASIC reset management in portable, industrial, and medical electronics.
FAQ
What is the exact VDD threshold voltage of the TPS3110E09DBVTG4?
The TPS3110E09DBVTG4 has a factory-trimmed negative-going input threshold voltage (VIT–) of 0.86 V, with ±0.75% accuracy at 25°C and 0.817 V to 0.903 V over –40°C to 125°C. This value is specified in the Electrical Characteristics table of the SLVS363H datasheet and applies exclusively to the E09 variant.
Does the TPS3110E09DBVTG4 require an external pull-up resistor on the RESET pin?
No, the TPS3110E09DBVTG4 features an active-low push-pull RESET output, meaning it actively drives both high and low states. Unlike open-drain supervisors, it does not require an external pull-up resistor, simplifying design and reducing component count.
How does the watchdog timer function on the TPS3110E09DBVTG4?
The TPS3110E09DBVTG4 watchdog timer is triggered by any rising or falling edge on the WDI pin. If no edge occurs within 1.1 s (typical), RESET is asserted for the standard 130 ms delay. The timer resets on each valid edge, enabling continuous firmware health monitoring without additional hardware.
Can the TPS3110E09DBVTG4 monitor a 3.3V rail while operating from a 0.9V supply?
Yes - the SENSE input accepts voltages up to VDD and compares them to a 0.551 V internal reference. To monitor 3.3V, use a precision resistor divider (e.g., R1 = 5.1 MΩ, R2 = 1.0 MΩ) to scale 3.3V down to ~0.55V at SENSE. The TPS3110E09DBVTG4's SENSE function remains fully operational even when VDD = 0.9V.
What is the minimum VDD required for the TPS3110E09DBVTG4 to assert RESET?
The TPS3110E09DBVTG4 asserts RESET when VDD rises above 0.4 V, per the datasheet's "RESET Defined With Input Voltages as Low as 0.4V" specification. This enables early reset assertion during ultra-slow power ramp-ups common in energy-harvesting and battery-depleted scenarios.
TPS3110E09DBVTG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 0.86V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 65ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
TPS3110E09DBVTG4 FAQ
1.How can I place an order for TPS3110E09DBVTG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS3110E09DBVTG4 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TPS3110E09DBVTG4 reliable?
The price and inventory of TPS3110E09DBVTG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS3110E09DBVTG4 is usually 5 days.
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Once your TPS3110E09DBVTG4 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TPS3110E09DBVTG4?
For technical support, including TPS3110E09DBVTG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS3110E09DBVTG4 requirements.
6.How does Aetrix verify that TPS3110E09DBVTG4 is sourced from the original manufacturer or authorized distributors?
All TPS3110E09DBVTG4 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TPS3110E09DBVTG4 meets industry standards.
7.What is the process for return or replacement of TPS3110E09DBVTG4?
All TPS3110E09DBVTG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS3110E09DBVTG4, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TPS3110E09DBVTG4 part is unused and in its original packaging.
Return procedure for TPS3110E09DBVTG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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