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Texas Instruments TPS37044A4OGDDFRQ1
- Part No.:
- TPS37044A4OGDDFRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- SOT-23-8 Thin, TSOT-23-8
- Datasheet:
-
TPS37044A4OGDDFRQ1.pdf
- Description:
- AUTOMOTIVE MULTICHANNEL WINDOW S
- Quantity:
- Payment:
- Shipping:
Inventory:2,940
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Product details
Overview
TPS37044A4OGDDFRQ1 from Texas Instruments is an AEC-Q100 Grade 1 (–40°C to +125°C) automotive quad-channel window voltage supervisor with ±0.25% typical threshold accuracy, 15 ms fixed reset delay, open-drain active-low outputs, and fixed thresholds of 3.3V (±8%), 1.8V (±4%), and dual 1.15V (±6%) for monitoring core/GPIO rails in ADAS and infotainment systems.
For engineers reviewing the TPS37044A4OGDDFRQ1 datasheet, TPS37044A4OGDDFRQ1 pinout, TPS37044A4OGDDFRQ1 application, or TPS37044A4OGDDFRQ1 equivalent, key selection considerations include ASIL-A functional safety compliance, SOT-23-8 package footprint, channel-specific window tolerance programmability, and compatibility with TI AM26x/AM62x/TDA4 processor power-rail monitoring requirements.
Technical Context
The TPS37044A4OGDDFRQ1 implements independent per-channel window supervision using internal precision resistor dividers-eliminating external components while maintaining ±0.25% typical threshold accuracy across –40°C to +125°C. Each channel supports configurable UV/OV/window detection with asymmetric tolerance options (e.g., +8%/–8% on 3.3V, +4%/–4% on 1.8V, +6%/–6% on both 1.15V rails).
Its functional architecture integrates bandgap-referenced comparators, glitch-immune detection logic (2 µs minimum immunity), and a fixed 15 ms reset timeout counter. The device asserts RESET1 when SENSE1 or SENSE2 falls outside their respective windows, and RESET2 when SENSE3 or SENSE4 violates theirs-enabling fault-isolated monitoring of four distinct voltage domains with only two open-drain outputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | Quad-channel: monitors four independent voltage rails via SENSE1–SENSE4 pins |
| Threshold Accuracy | ±0.25% typical at 25°C; ±1% max over –40°C to +125°C for all fixed thresholds |
| Reset Delay | Fixed 15 ms delay ensures stable power-up sequencing before system release |
| Supply Current | 5.5 µA typical quiescent current enables ultra-low-power always-on monitoring |
| Output Type | Open-drain active-low RESET1/RESET2 outputs require external pull-up resistors |
| Operating Temp | –40°C to +125°C (Grade 1), qualified to AEC-Q100 Rev G for automotive use |
| Hysteresis | 0.75% typical built-in hysteresis prevents false resets during rail noise or slow transients |
Pinout & Package
TPS37044A4OGDDFRQ1 uses an 8-pin SOT-23 (DDF) package measuring 1.6 mm × 2.9 mm with exposed pad (no thermal pad connection required). Pin 1 is VDD; pins 2–6 are SENSE1–SENSE4 inputs; pin 7 is RESET2; pin 8 is RESET1; pin 4 is GND; pins 3, 5, and 6 are no-connect (NC) in this variant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD (Pin 1) | Power supply input | Accepts 1.7–6.0 V; bypass with 0.1 µF ceramic capacitor to GND for stability |
| SENSE1 (Pin 2) | Monitoring input | Connects directly to 3.3V rail; RESET1 asserts if voltage falls outside 3.3V ±8% window |
| SENSE2 (Pin 3) | Monitoring input | Connects directly to 1.8V rail; RESET1 asserts if voltage falls outside 1.8V ±4% window |
| GND (Pin 4) | Ground reference | Common return path for all internal circuits and sense inputs |
| SENSE3 (Pin 5) | Monitoring input | Connects directly to first 1.15V rail; RESET2 asserts if voltage falls outside 1.15V ±6% window |
| SENSE4 (Pin 6) | Monitoring input | Connects directly to second 1.15V rail; RESET2 asserts if voltage falls outside 1.15V ±6% window |
| RESET2 (Pin 7) | Active-low output | Open-drain output asserted when SENSE3 or SENSE4 violate thresholds; requires external pull-up |
| RESET1 (Pin 8) | Active-low output | Open-drain output asserted when SENSE1 or SENSE2 violate thresholds; requires external pull-up |
Key Features
| Feature | Design Value |
|---|---|
| ASIL-A functional safety compliance | Systematic capability up to ASIL D; hardware capability certified ASIL A per ISO 26262 |
| Internal precision threshold resistors | Eliminates external resistor networks-reducing BOM count, layout area, and accuracy drift |
| Per-channel window tolerance programming | Configurable symmetric/asymmetric tolerances (e.g., +8%/–8% on 3.3V, +6%/–6% on 1.15V) |
| Glitch immunity | 2 µs minimum immunity against transient noise on any SENSEx input at 5% overdrive |
| Low-power operation | 5.5 µA typical IQ enables continuous monitoring in battery-backed or always-on automotive subsystems |
Applications
| ADAS Power-Rail Monitoring | Infotainment SoC Sequencing |
|---|---|
Use Scenario: Real-time monitoring of camera sensor, radar processor, and domain controller voltage rails in autonomous driving modules. IC Role / Device Role / Timing Role: Quad-channel window supervisor asserting RESET1/RESET2 to halt unsafe operation when any monitored rail deviates beyond ±4% to ±8% tolerance. Use Value: Prevents erroneous sensor data or control decisions by enforcing strict rail integrity before enabling critical functions. |
Use Scenario: Coordinated power-up validation of AM62x-based head unit with multiple low-voltage rails (3.3V I/O, 1.8V DDR, dual 1.15V cores). IC Role / Device Role / Timing Role: Provides synchronized 15 ms reset hold-off after all four rails stabilize within specification. Use Value: Eliminates need for discrete supervisors or FPGA-based sequencing logic-reducing component count and startup latency. |
| EV Battery Management Interface | Automotive Cluster Display Control |
Use Scenario: Supervising auxiliary power supplies feeding isolated CAN gateways and HV contactor drivers in battery management systems. IC Role / Device Role / Timing Role: Detects undervoltage on 3.3V communication rail and overvoltage on 1.8V interface rail simultaneously via SENSE1/SENSE2. Use Value: Enables fail-safe shutdown before corrupted CAN messages propagate to high-voltage subsystems. |
Use Scenario: Ensuring stable operation of TFT display driver ICs and touch controller rails in digital instrument clusters. IC Role / Device Role / Timing Role: Monitors dual 1.15V analog front-end supplies (SENSE3/SENSE4) with matched ±6% windows to prevent image artifacts. Use Value: Guarantees display integrity during cold cranking or load dump events without requiring custom hysteresis design. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS37044LJOJDDFR | Same quad-channel SOT-23-8 package but with 35 ms reset delay and adjustable 0.4V/0.4V/0.8V/0.8V thresholds | Used where longer reset hold-off is needed for slower-ramping rails or where threshold flexibility outweighs fixed-accuracy benefits | Select when design requires field-programmable thresholds and extended timing-not for drop-in replacement |
| TLV809E33DBVRQ1 | Single-channel 3.3V supervisor in SOT-23-5; ±2% threshold accuracy; 200 ms reset delay; no window or multi-rail capability | Only suitable for basic 3.3V UV detection-not for quad-rail or window monitoring | Choose only for cost-sensitive single-rail backup; not a functional substitute for TPS37044A4OGDDFRQ1's quad window capability |
Compared with TPS37044LJOJDDFR and TLV809E33DBVRQ1, the TPS37044A4OGDDFRQ1 uniquely delivers ASIL-A-compliant quad-channel window supervision with fixed high-accuracy thresholds and matched 15 ms timing-enabling compact, safety-certified monitoring of TI processor power domains without external components.
Availability
TPS37044A4OGDDFRQ1 is available at Aetrix Electronics and suitable for Advanced Driver Assistance Systems (ADAS), automotive infotainment, and EV powertrain control applications requiring stable component supply, long-term automotive qualification, and functional safety documentation support.
Supply support for TPS37044A4OGDDFRQ1 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-grade power management and signal chain solutions.
The TPS3704-Q1 product line was designed specifically for ASIL-A-compliant voltage supervision in automotive processors-including TI's AM26x, AM62x, and TDA4 families-delivering high-accuracy, low-power, and integrated window monitoring in miniature packages.
FAQ
What is the exact threshold configuration for TPS37044A4OGDDFRQ1?
The TPS37044A4OGDDFRQ1 has four fixed thresholds: SENSE1 = 3.3V (±8%), SENSE2 = 1.8V (±4%), SENSE3 = 1.15V (±6%), and SENSE4 = 1.15V (±6%). All channels operate in window mode, and each threshold's tolerance is asymmetric-meaning the upper and lower bounds are independently specified per the datasheet's tolerance table.
Does TPS37044A4OGDDFRQ1 require external resistors for threshold setting?
No, the TPS37044A4OGDDFRQ1 does not require external resistors. It integrates precision internal resistor dividers for all four channels, enabling ±0.25% typical threshold accuracy without external components-improving reliability and simplifying layout versus discrete resistor-based supervisors.
How are the RESET outputs assigned in TPS37044A4OGDDFRQ1?
In the TPS37044A4OGDDFRQ1, RESET1 (Pin 8) is asserted when either SENSE1 or SENSE2 falls outside its window, and RESET2 (Pin 7) is asserted when either SENSE3 or SENSE4 violates its window. This pairing reduces pin count while preserving fault isolation between two logical rail groups.
Is TPS37044A4OGDDFRQ1 compatible with TI AM62x processors?
Yes, the TPS37044A4OGDDFRQ1 is explicitly designed to monitor core and GPIO rails of TI AM62x processors. Its fixed thresholds-3.3V (I/O), 1.8V (DDR), and dual 1.15V (core)-match common AM62x power domains, and its 15 ms reset delay aligns with recommended boot sequencing timing.
What functional safety documentation is provided for TPS37044A4OGDDFRQ1?
Texas Instruments provides ISO 26262-ready functional safety documentation for the TPS37044A4OGDDFRQ1, including FMEDA reports, safety manuals, and diagnostic coverage analysis supporting ASIL-A implementation. The device achieves systematic capability up to ASIL D and hardware capability rated ASIL A.
TPS37044A4OGDDFRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SOT-23-8 Thin, TSOT-23-8
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 4
- Voltage - Threshold:
- 1.15V, 1.15V, 1.8V, 3.3V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 15ms Typical
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-8
TPS37044A4OGDDFRQ1 FAQ
1.How can I place an order for TPS37044A4OGDDFRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS37044A4OGDDFRQ1 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 TPS37044A4OGDDFRQ1 reliable?
The price and inventory of TPS37044A4OGDDFRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS37044A4OGDDFRQ1 is usually 5 days.
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TPS37044A4OGDDFRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS37044A4OGDDFRQ1 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 TPS37044A4OGDDFRQ1?
For technical support, including TPS37044A4OGDDFRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS37044A4OGDDFRQ1 requirements.
6.How does Aetrix verify that TPS37044A4OGDDFRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS37044A4OGDDFRQ1 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 TPS37044A4OGDDFRQ1 meets industry standards.
7.What is the process for return or replacement of TPS37044A4OGDDFRQ1?
All TPS37044A4OGDDFRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS37044A4OGDDFRQ1, 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 TPS37044A4OGDDFRQ1 part is unused and in its original packaging.
Return procedure for TPS37044A4OGDDFRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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