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Texas Instruments TPS3103E15DBVR
- Part No.:
- TPS3103E15DBVR
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
TPS3103E15DBVR.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:182
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Product details
Overview
TPS3103E15DBVR from Texas Instruments is an ultralow-quiescent-current voltage supervisor IC with fixed 1.434 V (±0.75%) VDD threshold, open-drain active-low RESET output, integrated PFI/PFO for secondary supply monitoring, and manual reset input - designed for power-on reset generation and brownout detection in battery-powered microcontroller systems operating down to 0.9 V.
For engineers reviewing the TPS3103E15DBVR datasheet, TPS3103E15DBVR pinout, TPS3103E15DBVR application, or TPS3103E15DBVR equivalent, key selection criteria include its 1.2 μA typical supply current at VDD < 1.8 V, 130 ms reset delay, –40°C to 125°C operation, and compatibility with low-voltage DSPs and portable equipment requiring precise, low-power supervision.
Technical Context
The TPS3103E15DBVR implements a precision bandgap-based voltage reference and comparator architecture to monitor VDD against a factory-trimmed 1.434 V threshold (VIT–) with 0.75% accuracy over temperature. It asserts RESET low when VDD falls below VIT– or when MR is pulled low, holding RESET active for ≥130 ms after VDD recovers above VIT– + VHYS (30 mV).
It integrates a dedicated PFI input referenced to 0.551 V (±3% over temperature) and open-drain PFO output for independent power-fail detection - fully decoupled from the main RESET path - enabling dual-supply monitoring without external components beyond resistor dividers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDD Threshold (VIT–) | 1.434 V ±0.75% - ensures reliable reset assertion at precisely 1.5 V nominal supply with minimal tolerance drift across –40°C to 125°C. |
| Supply Current (IDD) | 1.2 μA typical (VDD < 1.8 V) - enables multi-year battery life in always-on supervisory applications. |
| Reset Delay (tD) | 130 ms nominal - provides sufficient hold time for complete processor initialization before release. |
| PFI Threshold | 0.551 V ±3% - supports accurate low-voltage monitoring (e.g., battery fuel gauging) via external resistor divider. |
| Operating Temp | –40°C to 125°C - qualified for automotive under-hood and industrial embedded environments. |
| Output Type | Active-low open-drain RESET and PFO - allows wired-OR configuration and flexible pull-up voltage selection. |
| Min VDD for Operation | 0.9 V - supports supervision of ultra-low-voltage rails including sub-1 V logic domains. |
Pinout & Package
TPS3103E15DBVR is housed in a 6-pin SOT-23 (DBV) package measuring 2.90 mm × 2.80 mm, optimized for space-constrained PCB layouts and compatible with standard pick-and-place assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RESET (Pin 1) | Active-low open-drain output | Drives system reset line low during VDD undervoltage or MR assertion; requires external pull-up. |
| GND (Pin 2) | Ground reference | Common return path for all internal circuitry and comparator references. |
| MR (Pin 3) | Manual reset input | Logic-low active input with 100 kΩ internal pullup; forces RESET low regardless of VDD state. |
| VDD (Pin 6) | Supply and monitored rail | Powers device and serves as primary supervision input; valid from 0.9 V to 3.6 V. |
| PFI (Pin 4) | Power-fail input | Compares external voltage (via resistor divider) to 0.551 V reference; triggers PFO independently. |
| PFO (Pin 5) | Power-fail output | Open-drain output asserted low when PFI < 0.551 V; used for early warning or auxiliary reset. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow quiescent current | 1.2 μA typical enables >10-year coin-cell operation in maintenance-free IoT sensors. |
| High-accuracy VDD threshold | ±0.75% tolerance eliminates need for external calibration in precision power-rail monitoring. |
| Dual independent supervision | Simultaneous VDD and PFI monitoring allows coordinated reset and warning signals for multi-rail systems. |
| Robust manual reset interface | Internal 100 kΩ pullup and noise-immune timing enable direct switch connection without debounce circuitry. |
| Extended temperature range | –40°C to 125°C operation supports deployment in automotive engine control units and industrial PLCs. |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Continuous glucose monitor powered by CR2032 coin cell, requiring guaranteed reset on battery depletion below 2.0 V. IC Role / Device Role / Timing Role: TPS3103E15DBVR monitors VDD directly and PFI via resistor divider to trigger early shutdown before data corruption. Use Value: 1.2 μA supply current extends battery life to 7+ years; 1.434 V threshold ensures reset occurs at safe remaining capacity. | Use Scenario: DIN-rail mounted programmable logic controller with isolated 5 V and 24 V rails, needing fail-safe startup sequencing. IC Role / Device Role / Timing Role: TPS3103E15DBVR supervises 5 V logic rail (VDD) and 24 V field power (PFI), asserting separate RESET and PFO signals. Use Value: Independent PFI/PFO path prevents single-point failure; 130 ms delay guarantees firmware load completion before peripheral enable. |
| Automotive Body Control Units | Wireless Sensor Nodes |
Use Scenario: Under-hood BCM powered from 12 V battery through LDO, subject to cold-crank voltage dips below 6 V. IC Role / Device Role / Timing Role: TPS3103E15DBVR monitors post-LDO 3.3 V rail (VDD) and detects pre-LDO brownout via PFI to initiate graceful shutdown. Use Value: –40°C to 125°C rating ensures reliability in extreme ambient; 0.9 V minimum VDD supports operation during deep cold-crank events. | Use Scenario: LoRaWAN soil moisture node using AA batteries, transmitting hourly and sleeping otherwise. IC Role / Device Role / Timing Role: TPS3103E15DBVR holds MCU in reset until VDD stabilizes post-wakeup, while PFI monitors battery health between transmissions. Use Value: Dual supervision reduces BOM count vs discrete solutions; open-drain outputs simplify level-shifting to 1.8 V MCU I/O. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3103E12DBVR | 1.142 V threshold (vs 1.434 V); identical package, pinout, and features. | Suitable for 1.2 V core rails instead of 1.5 V; same timing and current specs. | Select when supervising lower-voltage domains where 1.434 V threshold would cause premature reset. |
| TPS3808G15DBVR | Higher 1.5 V threshold (±0.5%), 1.8 μA IDD, push-pull RESET, no PFI/PFO. | Lacks secondary monitoring capability; better for single-rail systems requiring faster rise time. | Choose when PFI functionality is unnecessary and push-pull drive simplifies layout, accepting higher quiescent current. |
Compared with TPS3103E12DBVR, the TPS3103E15DBVR provides tighter alignment to 1.5 V nominal supplies; compared with TPS3808G15DBVR, it trades push-pull drive and marginally better accuracy for essential dual-supply monitoring and 33% lower supply current.
Availability
TPS3103E15DBVR is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, automotive body control units, and wireless sensor nodes requiring stable component supply with long-term lifecycle support.
Supply support for TPS3103E15DBVR 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 leader specializing in analog and embedded processing technologies, with decades of expertise in power management and system supervision ICs.
The TPS31xx family was engineered specifically for ultra-low-power, high-accuracy voltage monitoring in battery-critical and thermally demanding applications - delivering precision reset generation without compromising energy efficiency.
FAQ
What is the exact VDD threshold voltage of the TPS3103E15DBVR?
The TPS3103E15DBVR has a factory-trimmed negative-going input threshold voltage (VIT–) of 1.434 V at 25°C, with guaranteed limits of 1.423 V (min) and 1.445 V (max). Over the full –40°C to 125°C range, the threshold remains within 1.362 V to 1.505 V, maintaining ±0.75% accuracy relative to nominal.
Does the TPS3103E15DBVR support monitoring a second voltage rail?
Yes, the TPS3103E15DBVR includes a dedicated PFI (power-fail input) pin referenced to a precise 0.551 V internal comparator. When an external resistor divider scales a second voltage rail (e.g., battery or auxiliary supply) to match this threshold, the corresponding PFO output asserts independently of the main RESET signal - enabling true dual-rail supervision in the TPS3103E15DBVR.
What is the supply current consumption of the TPS3103E15DBVR under typical conditions?
The TPS3103E15DBVR draws only 1.2 μA typical supply current when VDD is below 1.8 V and above its threshold, making it ideal for multi-year battery operation. At VDD > 1.8 V, typical current rises to 2.0 μA. These values are measured across –40°C to 85°C and represent average current during normal supervision mode.
Can the TPS3103E15DBVR operate from a 0.9 V supply?
Yes, the TPS3103E15DBVR is fully specified to operate from VDD = 0.9 V up to 3.6 V. Its internal circuitry functions correctly at 0.9 V, and RESET is defined down to VDD = 0.4 V - ensuring robust reset assertion even during deep brownout conditions. This capability is explicitly validated in the datasheet's Recommended Operating Conditions table.
What package type and dimensions does the TPS3103E15DBVR use?
The TPS3103E15DBVR uses the DBV package - a 6-pin SOT-23 variant measuring 2.90 mm in length and 2.80 mm in width, including leads. This surface-mount package supports automated assembly and is footprint-compatible with industry-standard SOT-23 placements, with thermal resistance RθJA = 183.2°C/W.
TPS3103E15DBVR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 1.434V
- Output:
- Open Drain or Open Collector
- 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
TPS3103E15DBVR FAQ
1.How can I place an order for TPS3103E15DBVR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS3103E15DBVR 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 TPS3103E15DBVR reliable?
The price and inventory of TPS3103E15DBVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS3103E15DBVR is usually 5 days.
3.What payment methods are accepted for TPS3103E15DBVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS3103E15DBVR transactions.
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4.How is shipping managed for TPS3103E15DBVR?
TPS3103E15DBVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS3103E15DBVR 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 TPS3103E15DBVR?
For technical support, including TPS3103E15DBVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS3103E15DBVR requirements.
6.How does Aetrix verify that TPS3103E15DBVR is sourced from the original manufacturer or authorized distributors?
All TPS3103E15DBVR 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 TPS3103E15DBVR meets industry standards.
7.What is the process for return or replacement of TPS3103E15DBVR?
All TPS3103E15DBVR units undergo pre-shipment inspection (PSI). If there is an issue with TPS3103E15DBVR, 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 TPS3103E15DBVR part is unused and in its original packaging.
Return procedure for TPS3103E15DBVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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