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Texas Instruments TPS37044CJOFDDFRQ1
- Part No.:
- TPS37044CJOFDDFRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- SOT-23-8 Thin, TSOT-23-8
- Datasheet:
-
TPS37044CJOFDDFRQ1.pdf
- Description:
- AUTOMOTIVE MULTICHANNEL WINDOW S
- Quantity:
- Payment:
- Shipping:
Inventory:2,987
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Product details
Overview
TPS37044CJOFDDFRQ1 from Texas Instruments is an ASIL-A functional safety-compliant automotive quad-channel window voltage supervisor in an 8-pin SOT-23 (DDF) package. It monitors four independent voltage rails with ±0.25% typical threshold accuracy, programmable window tolerance (±6% per channel), 10 ms fixed reset delay, and open-drain active-low outputs-designed for core/GPIO rail supervision in TI AM62x/TDA4 processors.
For engineers reviewing the TPS37044CJOFDDFRQ1 datasheet, TPS37044CJOFDDFRQ1 pinout, TPS37044CJOFDDFRQ1 application, or TPS37044CJOFDDFRQ1 equivalent, key selection factors include its adjustable 0.8 V thresholds (±6%), ultra-low 5.5 µA quiescent current, AEC-Q100 Grade 1 qualification (–40°C to +125°C), and integrated resistor-based threshold setting eliminating external components.
Technical Context
The TPS37044CJOFDDFRQ1 implements a precision window supervision architecture with independent overvoltage (OV) and undervoltage (UV) comparators per channel, each using internal resistor dividers to set thresholds at 0.8 V nominal with ±6% tolerance. Its glitch immunity is 2 µs for both OV and UV events at 5% overdrive, and propagation detect delay is ≤10 µs.
Each of the four SENSE inputs accepts 0–6.0 V monitoring voltages, with dedicated open-drain RESET outputs (RESET1/RESET2) asserted when any monitored rail violates its window. The device features built-in hysteresis (0.75% typical), power-on reset (VPOR = 0.7 V), and UVLO (1.4 V typical) with 65 mV hysteresis to ensure robust startup behavior.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | Quad (4 independent SENSE inputs with configurable window/OV/UV detection) |
| Threshold Accuracy | ±0.25% typical at 25°C; ±1% over –40°C to +125°C for 0.8 V setpoint |
| Window Tolerance | ±6% per channel (asymmetric UV/OV tolerances supported) |
| Quiescent Current | 5.5 µA typical - enables always-on monitoring in battery-sensitive automotive systems |
| Reset Delay | Fixed 10 ms - ensures stable power sequencing before system release |
| Output Type | Open-drain active-low (RESET1/RESET2); requires external pull-up resistors |
| Supply Range | 1.7 V to 6.0 V - supports wide-input automotive rail monitoring including 1.2 V, 1.8 V, 3.3 V |
Pinout & Package
Package: 8-pin SOT-23 (DDF), body size 1.6 mm × 2.9 mm, footprint-compatible with industry-standard SOT-23-8 layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply input | 1.7–6.0 V supply; bypassed with 0.1 µF capacitor to GND for noise immunity |
| SENSE1 | Voltage monitoring input | Monitors first rail; RESET1 asserts if voltage falls outside 0.8 V ±6% window |
| SENSE2 | Voltage monitoring input | Monitors second rail; RESET1 asserts if either SENSE1 or SENSE2 violates window |
| GND | Ground reference | Common return path for VDD, SENSEx, and RESETx signals |
| SENSE3 | Voltage monitoring input | Monitors third rail; RESET2 asserts if either SENSE3 or SENSE4 violates window |
| SENSE4 | Voltage monitoring input | Monitors fourth rail; paired with SENSE3 for dual-output fault coverage |
| RESET1 | Active-low open-drain output | Asserted low when SENSE1 or SENSE2 fault; requires external pull-up to VDD |
| RESET2 | Active-low open-drain output | Asserted low when SENSE3 or SENSE4 fault; requires external pull-up to VDD |
Key Features
| Feature | Design Value |
|---|---|
| ASIL-A functional safety compliance | Documentation and systematic capability aligned with ISO 26262 for automotive safety-critical system integration |
| No external resistors required | Internal precision resistor network sets 0.8 V thresholds - eliminates BOM cost, layout area, and accuracy drift from external components |
| Adjustable low-voltage thresholds | 0.8 V nominal setpoint with ±6% tolerance per channel - optimized for modern sub-1 V processor core rails |
| Ultra-low quiescent current | 5.5 µA typical - extends battery life in always-on ADAS and infotainment modules |
| Configurable window supervision | Each channel independently supports window, OV-only, or UV-only modes - enabling flexible rail monitoring strategies |
Applications
| Advanced Driver Assistance Systems (ADAS) | Automotive Infotainment & Cluster |
|---|---|
Use Scenario: Real-time monitoring of camera sensor power rails (1.2 V, 1.8 V, 2.8 V) and SoC core supplies in surround-view ECUs. IC Role / Device Role / Timing Role: Quad-channel window supervisor ensuring all critical rails remain within ±6% of 0.8 V–3.3 V targets before releasing processor reset. Use Value: Prevents false resets during transient load switching; 10 ms delay guarantees stable rail settling before system boot. |
Use Scenario: Supervising multiple voltage domains (DVDD, IOVDD, AVDD) in head-unit SoCs with tight supply margins. IC Role / Device Role / Timing Role: Independent OV/UV detection on four rails with separate RESET1/RESET2 outputs for hierarchical fault reporting. Use Value: Enables differentiated recovery paths - e.g., soft-reset display subsystem while holding main CPU in reset during AVDD fault. |
| Hybrid/Electric Vehicle (HEV/EV) Powertrain | Automotive Body Electronics |
Use Scenario: Monitoring isolated DC-DC converter outputs powering gate drivers and MCU peripherals in battery management units. IC Role / Device Role / Timing Role: Window supervision of 3.3 V control rail and 1.2 V digital core rail with ±0.25% accuracy to meet ASIL-B decomposition requirements. Use Value: Internal resistor network eliminates calibration drift over temperature - critical for 15-year vehicle lifetime reliability. |
Use Scenario: Voltage supervision of LIN transceiver, LED driver, and microcontroller rails in smart junction boxes. IC Role / Device Role / Timing Role: Low-power (5.5 µA) quad monitor enabling continuous supervision without compromising sleep-mode current budgets. Use Value: AEC-Q100 Grade 1 rating ensures operation up to +125°C ambient - suitable for under-hood body control modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS37044BJOFDDFRQ1 | Same quad-channel, open-drain, 10 ms delay; tighter ±4% window tolerance vs. ±6% | Better suited for higher-accuracy rail monitoring where tighter threshold margins are required | Select when 0.8 V rail stability demands <±5% window tolerance; identical pinout and footprint |
| TPS37044MJOFDDFRQ1 | Same quad-channel, open-drain, 10 ms delay; lower 0.4 V threshold (±7%) vs. 0.8 V (±6%) | Designed for ultra-low-voltage cores (e.g., 0.4 V AI accelerator domains), not 0.8 V rails | Choose only for sub-0.6 V monitoring; incompatible for 0.8 V use due to different threshold range and accuracy profile |
Compared with TPS37044CJOFDDFRQ1, TPS37044BJOFDDFRQ1 offers improved threshold tolerance for precision applications, while TPS37044MJOFDDFRQ1 serves distinct low-voltage domains - neither provides drop-in replacement for 0.8 V ±6% supervision without revalidation.
Availability
TPS37044CJOFDDFRQ1 is available at Aetrix Electronics and suitable for Advanced Driver Assistance Systems (ADAS), automotive infotainment systems, and HEV/EV powertrain controllers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TPS37044CJOFDDFRQ1 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 deep expertise in automotive-grade IC design and functional safety certification.
The TPS3704-Q1 product line delivers high-accuracy, low-power voltage supervision for automotive SoC power integrity - engineered specifically for ASIL-A system integration in ADAS, infotainment, and electrification platforms.
FAQ
What is the exact threshold voltage and tolerance programmed into TPS37044CJOFDDFRQ1?
The TPS37044CJOFDDFRQ1 is factory-programmed with a nominal 0.8 V threshold per channel and ±6% window tolerance (i.e., UV = 0.752 V, OV = 0.848 V). This is confirmed in Table 4-1 of the datasheet and applies across –40°C to +125°C with ±1% total accuracy. No external resistors are needed - the values are set by internal precision resistors.
Does TPS37044CJOFDDFRQ1 support independent reset outputs for all four channels?
No. The TPS37044CJOFDDFRQ1 provides two open-drain active-low reset outputs: RESET1 responds to faults on SENSE1 or SENSE2, and RESET2 responds to faults on SENSE3 or SENSE4. This dual-output architecture reduces pin count while maintaining fault isolation between rail groups - a deliberate design choice for compact automotive ECUs.
Is TPS37044CJOFDDFRQ1 qualified for automotive use, and what temperature grade does it support?
Yes. The TPS37044CJOFDDFRQ1 is AEC-Q100 qualified for automotive applications and rated for Device Temperature Grade 1: –40°C to +125°C ambient operating temperature. It also meets ASIL-A functional safety requirements per ISO 26262, with documentation provided to support system-level safety analysis.
Can TPS37044CJOFDDFRQ1 monitor voltage rails below 0.8 V?
No. The TPS37044CJOFDDFRQ1 is configured for 0.8 V nominal thresholds with ±6% tolerance. For rails below 0.6 V, TI recommends alternatives like TPS37044MJOFDDFRQ1 (0.4 V ±7%). Attempting to monitor sub-0.6 V rails with TPS37044CJOFDDFRQ1 would exceed its specified VIT range and invalidate accuracy guarantees.
What is the reset timeout behavior of TPS37044CJOFDDFRQ1 during a voltage fault?
When a monitored rail violates its window, TPS37044CJOFDDFRQ1 asserts the corresponding RESET output (low) and holds it for the full 10 ms fixed delay period - even if the rail recovers mid-interval. Only after 10 ms does the output release, provided the rail remains within tolerance. This prevents chattering during marginal conditions and ensures deterministic system reset timing.
TPS37044CJOFDDFRQ1 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:
- -
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 4
- Voltage - Threshold:
- Adjustable/Selectable
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 10ms Typical
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-8
TPS37044CJOFDDFRQ1 FAQ
1.How can I place an order for TPS37044CJOFDDFRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS37044CJOFDDFRQ1 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 TPS37044CJOFDDFRQ1 reliable?
The price and inventory of TPS37044CJOFDDFRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS37044CJOFDDFRQ1 is usually 5 days.
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Once your TPS37044CJOFDDFRQ1 order is processed, you will receive an email with the shipment details and tracking number.
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5.How can I obtain technical support or documentation for TPS37044CJOFDDFRQ1?
For technical support, including TPS37044CJOFDDFRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS37044CJOFDDFRQ1 requirements.
6.How does Aetrix verify that TPS37044CJOFDDFRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS37044CJOFDDFRQ1 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 TPS37044CJOFDDFRQ1 meets industry standards.
7.What is the process for return or replacement of TPS37044CJOFDDFRQ1?
All TPS37044CJOFDDFRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS37044CJOFDDFRQ1, 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 TPS37044CJOFDDFRQ1 part is unused and in its original packaging.
Return procedure for TPS37044CJOFDDFRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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