My Inquiry
My Account
Texas Instruments 2T03G15QDCKRG4Q
- Part No.:
- 2T03G15QDCKRG4Q
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
2T03G15QDCKRG4Q.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,505
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPS3803G15-Q1 from Texas Instruments is an automotive-grade voltage supervisor IC that monitors a single 1.5-V supply rail using a fixed internal threshold of 1.4 V (±1.5%), asserts active-low open-drain RESET when VDD drops below threshold, and operates across –40°C to 125°C for use in engine control units and ADAS domain controllers.
For engineers reviewing the TPS3803G15-Q1 datasheet, TPS3803G15-Q1 pinout, TPS3803G15-Q1 application, or TPS3803G15-Q1 equivalent, key selection criteria include its 3 μA typical supply current at 3.3 V, SC-70 (5-pin) package footprint, ±1.5% threshold accuracy, and immunity to short negative transients on VDD.
Technical Context
The TPS3803G15-Q1 implements a precision bandgap-based comparator with built-in 15 mV hysteresis to prevent oscillatory reset assertion during slow-rising or noisy supply ramps. Its fixed 1.4-V threshold is set by an internal resistor divider - no external components required for basic 1.5-V rail monitoring.
Power-on reset is guaranteed down to 0.8 V supply, and RESET remains asserted until VDD exceeds 1.4 V and stabilizes. The device features open-drain output requiring external pull-up, enabling wired-OR reset bus configurations in multi-supply systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Threshold Voltage | 1.4 V ±1.5% - ensures reliable detection of 1.5-V rail collapse with margin against noise and drift |
| Supply Current | 3 μA typical at 3.3 V - enables always-on supervision in low-power automotive modules |
| Operating Temp | –40°C to 125°C - qualified per AEC-Q100 for under-hood and infotainment applications |
| Reset Output | Active-low open-drain - supports flexible pull-up voltage selection and reset bus sharing |
| Hysteresis | 15 mV - prevents chatter during marginal supply recovery without external RC network |
| Transient Immunity | Immune to <5.5 μs negative transients below VIT - suppresses false resets from ESD or load switching |
| Package | SC-70 (DCK), 2.00 mm × 1.25 mm - surface-mount compatible with high-density automotive PCB layouts |
Pinout & Package
TPS3803G15-Q1 is housed in a 5-pin SC-70 (DCK) package with 0.65-mm lead pitch and nominal body size 2.00 mm × 1.25 mm. Pin 1 and Pin 5 are NC (no internal connection); only Pins 2–4 are functional.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 2) | Ground reference | Primary return path for internal comparator and output stage; must be low-impedance |
| RESET (Pin 3) | Open-drain output | Asserts low when VDD < 1.4 V; requires external pull-up to system VDD or higher logic rail |
| VDD (Pin 4) | Supply & sense input | Monitors 1.5-V rail directly; also powers internal circuitry; valid from 1.3 V to 6 V |
| NC (Pin 1) | No connection | Not bonded; must remain unconnected on PCB to avoid parasitic coupling |
| NC (Pin 5) | No connection | Not bonded; must remain unconnected on PCB to avoid parasitic coupling |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 1.4-V threshold | Eliminates external resistor divider, reducing BOM count and layout area for 1.5-V rail monitoring |
| AEC-Q100 qualified | Validated for automotive safety-critical systems including powertrain and ADAS ECUs |
| 3 μA supply current | Enables continuous supervision in battery-backed modules without measurable drain impact |
| 15 mV hysteresis | Guarantees clean, bounce-free reset deassertion during supply ramp-up without external components |
| 0.8-V power-on reset | Ensures early reset assertion during cold cranking or low-battery start conditions |
Applications
| Engine Control Unit (ECU) | Advanced Driver Assistance System (ADAS) |
|---|---|
Use Scenario: Monitors 1.5-V core supply for microcontroller and CAN transceiver during ignition sequence and transient load events. IC Role / Device Role / Timing Role: Voltage supervisor asserting hardware reset to prevent firmware execution on unstable supply. Use Value: Prevents corrupted flash writes and undefined MCU behavior during brownout caused by alternator ripple or load dump. |
Use Scenario: Supervises 1.5-V analog supply for radar signal processor ADC reference and clock buffers. IC Role / Device Role / Timing Role: Ensures clean power-up sequencing and detects rail collapse during EMI-heavy sensor fusion operations. Use Value: Avoids false object detection due to ADC reference instability by forcing full system reset before processing begins. |
| Automotive Infotainment Head Unit | Instrument Cluster Display Controller |
Use Scenario: Watches 1.5-V I/O supply feeding touch controller and display interface logic in parked mode. IC Role / Device Role / Timing Role: Low-current supervisor maintaining reset state during sleep/wake transitions. Use Value: Guarantees deterministic wake-from-sleep behavior by holding reset until 1.5-V rail reaches stable regulation. |
Use Scenario: Supervises 1.5-V supply powering cluster MCU's real-time timer and SPI peripherals during CAN bus arbitration. IC Role / Device Role / Timing Role: Provides fail-safe reset independent of software watchdog to maintain ASIL-B compliance. Use Value: Meets ISO 26262 requirements for fault detection latency < 100 μs during critical display update cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3803-01-Q1 | Adjustable threshold via external resistor divider; 1.226-V internal reference; same SC-70 package | Supports monitoring of any rail ≥1.226 V (e.g., 2.5 V, 5 V), not limited to 1.5 V | Select when flexibility across multiple rail voltages is needed; adds two resistors and layout area |
| TPS3805H33-Q1 | Dual-input: fixed 3.05-V VDD threshold + adjustable 1.226-V SENSE input; push-pull RESET output | Designed for simultaneous monitoring of 3.3-V main supply and secondary rail (e.g., 1.8-V I/O) | Select when supervising two rails is required; incompatible pinout and output drive architecture |
Compared with TPS3803-01-Q1 and TPS3805H33-Q1, the TPS3803G15-Q1 delivers lowest BOM cost and smallest footprint for dedicated 1.5-V rail supervision, but lacks adjustability or dual-rail capability - making it optimal for high-volume, single-threshold automotive modules.
Availability
TPS3803G15-Q1 is available at Aetrix Electronics and suitable for engine control units, ADAS domain controllers, and instrument cluster displays requiring stable component supply across extended temperature and automotive lifecycle demands.
Supply support for TPS3803G15-Q1 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 automotive, industrial, and power management ICs.
The TPS380x-Q1 family was designed specifically for automotive voltage supervision - delivering AEC-Q100 qualified, low-quiescent-current, high-accuracy reset generation for safety-critical electronic control units.
FAQ
What is the exact threshold voltage and accuracy of the TPS3803G15-Q1?
The TPS3803G15-Q1 has a fixed threshold voltage of 1.4 V with ±1.5% accuracy over –40°C to 125°C. This specification is guaranteed in production testing and applies to all units shipped under the TPS3803G15-Q1 part number, including 2T03G15QDCKRG4Q. The 1.4-V value ensures robust supervision of standard 1.5-V logic rails with sufficient noise margin.
Does the TPS3803G15-Q1 require external components for basic operation?
No, the TPS3803G15-Q1 requires only a 0.1-μF ceramic decoupling capacitor on the VDD pin for stable operation. Unlike adjustable supervisors, it needs no external resistors for threshold setting. Its open-drain RESET output does require an external pull-up resistor - typically 4.7 kΩ to the monitored 1.5-V rail - to complete the reset circuit for the host microcontroller.
What is the function of the NC pins on the TPS3803G15-Q1 SC-70 package?
Pins 1 and 5 of the TPS3803G15-Q1 in the SC-70 (DCK) package are designated NC (no connection) and have no internal bond wire or silicon connection. They must remain unconnected on the PCB layout. Routing traces or placing vias on these pads may introduce parasitic capacitance or leakage paths that degrade transient immunity or increase startup delay - both verified in TI's characterization of the TPS3803G15-Q1.
How does the TPS3803G15-Q1 behave during cold-cranking conditions?
The TPS3803G15-Q1 asserts RESET when VDD falls below 1.4 V and maintains it until VDD rises above 1.4 V + 15 mV hysteresis. Crucially, it begins asserting RESET as low as 0.8 V supply - well within automotive cold-cranking range (typically 3–6 V drop to ~6 V, but can dip to 2.5 V). This ensures the host MCU remains held in reset even during deep battery sag, preventing erratic execution in the TPS3803G15-Q1.
Is the TPS3803G15-Q1 pin-compatible with other devices in the TPS380x-Q1 family?
No - the TPS3803G15-Q1 is not pin-compatible with TPS3803-01-Q1 or TPS3805H33-Q1. Although all three share the SC-70 (DCK) package, their pin functions differ: TPS3803G15-Q1 uses Pin 4 as VDD/sense and Pins 1 & 5 as NC; TPS3803-01-Q1 uses Pin 5 as SENSE; TPS3805H33-Q1 uses Pin 5 as SENSE and has push-pull RESET on Pin 3. Substitution requires PCB redesign - confirmed in TI's Device Comparison Table for TPS3803G15-Q1.
2T03G15QDCKRG4Q Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 1.4V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 5µs Typical Propagation Delay
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
2T03G15QDCKRG4Q FAQ
1.How can I place an order for 2T03G15QDCKRG4Q through Aetrix?
Please submit a Request for Quotation (RFQ) for 2T03G15QDCKRG4Q 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 2T03G15QDCKRG4Q reliable?
The price and inventory of 2T03G15QDCKRG4Q are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2T03G15QDCKRG4Q is usually 5 days.
3.What payment methods are accepted for 2T03G15QDCKRG4Q?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2T03G15QDCKRG4Q transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 2T03G15QDCKRG4Q?
2T03G15QDCKRG4Q orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 2T03G15QDCKRG4Q 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 2T03G15QDCKRG4Q?
For technical support, including 2T03G15QDCKRG4Q datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2T03G15QDCKRG4Q requirements.
6.How does Aetrix verify that 2T03G15QDCKRG4Q is sourced from the original manufacturer or authorized distributors?
All 2T03G15QDCKRG4Q 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 2T03G15QDCKRG4Q meets industry standards.
7.What is the process for return or replacement of 2T03G15QDCKRG4Q?
All 2T03G15QDCKRG4Q units undergo pre-shipment inspection (PSI). If there is an issue with 2T03G15QDCKRG4Q, 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 2T03G15QDCKRG4Q part is unused and in its original packaging.
Return procedure for 2T03G15QDCKRG4Q:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
2T03G15QDCKRG4Q Tags
-
MIC826SYMT-TR
Microchip Technology
-
APX803S-31SA-7
Diodes Incorporated
-
APX803L20-29SA-7
Diodes Incorporated
-
TPS3828-33DBVR
Texas Instruments
-
V6340RSP3B+
EM Microelectronic
-
EM6325CXSP5B-2.9+
EM Microelectronic
-
MCP120T-300I/TT
Microchip Technology
-
MCP130T-315I/TT
Microchip Technology
-
MCP120T-475I/TT
Microchip Technology
-
MCP111T-300E/TT
Microchip Technology
-
MCP120T-315I/TT
Microchip Technology
-
MCP809T-315I/TT
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
