My Inquiry
My Account
Texas Instruments TPS37043BJOFDDFRQ1
- Part No.:
- TPS37043BJOFDDFRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- SOT-23-8 Thin, TSOT-23-8
- Datasheet:
-
TPS37043BJOFDDFRQ1.pdf
- Description:
- AUTOMOTIVE MULTICHANNEL WINDOW S
- Quantity:
- Payment:
- Shipping:
Inventory:1,740
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPS37043BJOFDDFRQ1 from Texas Instruments is an ASIL-A functional safety-compliant automotive triple-channel window voltage supervisor in an 8-pin SOT-23 (DDF) package. It monitors three independent voltage rails with ±0.25% typical threshold accuracy, programmable asymmetric window tolerance (±4% per channel), and 10 ms fixed reset delay-designed for core/GPIO rail supervision in TI AM62x and TDA4 processors.
For engineers reviewing the TPS37043BJOFDDFRQ1 datasheet, TPS37043BJOFDDFRQ1 pinout, TPS37043BJOFDDFRQ1 application, or TPS37043BJOFDDFRQ1 equivalent, this page delivers verified specifications, triple-channel configuration details, AEC-Q100 Grade 1 (–40°C to +125°C) operation, open-drain active-low outputs, and adjustable 0.8 V thresholds with 20 mV resolution for low-voltage rail monitoring.
Technical Context
The TPS37043BJOFDDFRQ1 implements fully integrated resistor-based threshold programming for all three channels, eliminating external resistors and enabling ±0.25% accuracy across –40°C to +125°C. Each SENSE pin supports independent window, overvoltage, or undervoltage detection with asymmetric tolerance configuration (e.g., –4% UV / +4% OV).
Its internal bandgap reference feeds dual comparators per channel, with glitch immunity of 2 µs at 5% overdrive and propagation detect delay ≤10 µs. The device uses a fixed 10 ms reset timeout and features built-in 0.75% typical hysteresis to prevent false resets during rail transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | Triple independent voltage monitoring channels (SENSE1/2/3) |
| Threshold Accuracy | ±0.25% typical over –40°C to +125°C - enables tight-margin rail validation without derating |
| Threshold Range | 0.4 V to 5.55 V - supports core, I/O, and analog rails including sub-1V domains |
| Window Tolerance | ±4% per channel (adjustable) - allows asymmetric UV/OV margins for asymmetric supply tolerances |
| Quiescent Current | 5.5 µA typical - minimizes standby power impact in always-on automotive systems |
| Reset Delay | 10 ms fixed - ensures stable power-up sequencing before system release |
| Output Type | Open-drain active-low (RESET1/2/3) - compatible with 1.7–6.0 V host logic and flexible pull-up placement |
| Package | 8-pin SOT-23 (DDF, 1.6 mm × 2.9 mm) - compact footprint for space-constrained ADAS and infotainment PCBs |
Pinout & Package
Package: 8-pin SOT-23 (DDF), body size 1.6 mm × 2.9 mm, rated for –40°C to +125°C ambient operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Supply input | Power source (1.7–6.0 V); requires 0.1 µF bypass capacitor to GND for noise immunity |
| SENSE1 | Channel 1 voltage monitor input | Direct connection to first monitored rail; no external capacitor required; 0.8 V ±4% adjustable threshold |
| SENSE2 | Channel 2 voltage monitor input | Direct connection to second monitored rail; identical 0.8 V ±4% threshold as SENSE1 |
| GND | Ground reference | Common return path for VDD, SENSE inputs, and RESET outputs |
| SENSE3 | Channel 3 voltage monitor input | Direct connection to third monitored rail; identical 0.8 V ±4% threshold as SENSE1/2 |
| RESET1 | Active-low reset output (CH1) | Open-drain output asserting when SENSE1 exceeds window; requires external pull-up |
| RESET2 | Active-low reset output (CH2) | Open-drain output asserting when SENSE2 exceeds window; requires external pull-up |
| RESET3 | Active-low reset output (CH3) | Open-drain output asserting when SENSE3 exceeds window; requires external pull-up |
Key Features
| Feature | Design Value |
|---|---|
| ASIL-A functional safety compliance | Documentation support for ISO 26262 system design with systematic capability up to ASIL D |
| Adjustable 0.8 V thresholds | 20 mV step resolution below 0.8 V enables precise low-voltage rail supervision (e.g., 0.8 V ±4% = 0.768–0.832 V) |
| No external resistors required | Integrated precision resistor dividers eliminate BOM cost, layout area, and accuracy degradation from external components |
| 10 ms fixed reset delay | Guaranteed hold time prevents premature release during power ramp-up or transient recovery |
| 0.75% typical hysteresis | Prevents oscillatory reset assertion during slow-rising/falling rails or noise-induced threshold crossings |
| AEC-Q100 Grade 1 qualification | Validated for automotive use from –40°C to +125°C ambient, supporting under-hood and cockpit applications |
Applications
| ADAS Domain Controller Power Sequencing | Automotive Infotainment SoC Supervision |
|---|---|
|
Use Scenario: Monitoring 0.8 V core, 1.8 V I/O, and 3.3 V peripheral rails on a TDA4VM-based ADAS domain controller during cold cranking and load dump conditions. IC Role / Device Role / Timing Role: Triple-channel window supervisor providing independent UV/OV fault detection and synchronized 10 ms reset release per rail. Use Value: ±0.25% threshold accuracy ensures reliable detection within narrow 0.8 V ±4% margin, preventing false resets during battery transients. |
Use Scenario: Validating stable power-up of AM62x processor rails-including dual 0.8 V cores and shared 1.8 V I/O-in a digital cluster display unit. IC Role / Device Role / Timing Role: Configured as three independent 0.8 V supervisors with asymmetric tolerance to match differing rail stability requirements. Use Value: Integrated thresholds eliminate external resistor matching errors, improving yield in high-volume automotive production. |
| HEV/EV Battery Management Interface | Body Control Module Voltage Integrity |
|
Use Scenario: Supervising isolated 0.8 V ADC reference, 3.3 V CAN transceiver, and 5.0 V microcontroller supply in a high-voltage battery interface module. IC Role / Device Role / Timing Role: Window-mode supervision with 10 ms delay ensures all rails settle before enabling communication interfaces. Use Value: 5.5 µA quiescent current minimizes parasitic drain on 12 V auxiliary battery during vehicle sleep mode. |
Use Scenario: Monitoring 0.8 V MCU core, 1.2 V sensor interface, and 3.3 V LIN transceiver in a door module exposed to wide thermal cycling. IC Role / Device Role / Timing Role: Triple-channel ASIL-A compliant supervision meeting ISO 26262 hardware requirements for body electronics. Use Value: AEC-Q100 Grade 1 rating guarantees operation at +125°C ambient, critical for under-dash mounting locations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS37043A5OFDDFRQ1 | Fixed 3.3 V / 1.8 V / 1.2 V thresholds (±4%), no adjustability | Predefined rail voltages only; unsuitable for custom or sub-1V designs | Select when exact TI reference rail voltages match system needs and design flexibility is not required |
| TLV809E33DBVRQ1 | Single-channel, fixed 3.3 V reset, no window detection, 200 ms delay | Lacks multi-rail and window supervision; limited to basic power-on reset | Use only for simple single-rail reset where triple-channel window monitoring is unnecessary |
Compared with TPS37043A5OFDDFRQ1 and TLV809E33DBVRQ1, the TPS37043BJOFDDFRQ1 uniquely supports three independently adjustable 0.8 V windows with ±4% tolerance, enabling precise low-voltage rail supervision unattainable with fixed-threshold or single-channel alternatives.
Availability
TPS37043BJOFDDFRQ1 is available at Aetrix Electronics and suitable for Advanced Driver Assistance Systems (ADAS), automotive infotainment, and HEV/EV battery interface applications requiring stable component supply, AEC-Q100 compliance, and functional safety documentation support.
Supply support for TPS37043BJOFDDFRQ1 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 delivering analog and embedded processing solutions, with deep expertise in automotive-grade ICs and functional safety design.
The TPS3704-Q1 product line was developed specifically for ASIL-A automotive voltage supervision, targeting multi-rail SoC power integrity in ADAS, infotainment, and electrification systems with minimal external components.
FAQ
What is the threshold voltage configuration for TPS37043BJOFDDFRQ1?
The TPS37043BJOFDDFRQ1 is configured with three adjustable 0.8 V thresholds (±4% tolerance) on SENSE1, SENSE2, and SENSE3 pins. Each channel uses internal resistor dividers-no external components needed-and supports 20 mV resolution for precise low-voltage rail monitoring. This matches TI's AM62x and TDA4 core rail requirements.
Does TPS37043BJOFDDFRQ1 support window, overvoltage, and undervoltage detection modes?
Yes, TPS37043BJOFDDFRQ1 supports all three detection modes per channel. Each of its three SENSE inputs can be independently configured as a window (UV+OV), overvoltage-only, or undervoltage-only supervisor. Asymmetric tolerance (e.g., –4% UV / +4% OV) is supported, and the device maintains ±0.25% typical threshold accuracy across –40°C to +125°C.
What is the reset output topology of TPS37043BJOFDDFRQ1?
TPS37043BJOFDDFRQ1 provides three open-drain, active-low reset outputs (RESET1, RESET2, RESET3), each corresponding to one SENSE input. Each output requires an external pull-up resistor to the appropriate logic rail (1.7–6.0 V). The device does not offer push-pull outputs-this variant is designated "O" (open-drain) in the naming convention.
Is TPS37043BJOFDDFRQ1 qualified for automotive applications?
Yes, TPS37043BJOFDDFRQ1 is AEC-Q100 qualified for automotive applications (Grade 1: –40°C to +125°C ambient) and ASIL-A functional safety-compliant. It includes ISO 26262 documentation support, systematic capability up to ASIL D, and hardware capability certified to ASIL A-making it suitable for ADAS, infotainment, and body electronics.
What package type and dimensions does TPS37043BJOFDDFRQ1 use?
TPS37043BJOFDDFRQ1 uses the DDF package: an 8-pin SOT-23 variant with nominal body dimensions of 1.6 mm × 2.9 mm. It is pin-compatible with other TPS3704x-Q1 family members in the same package, enabling scalable design across single/dual/triple/quad configurations without layout changes.
TPS37043BJOFDDFRQ1 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:
- 3
- Voltage - Threshold:
- 0.8V, 0.8V, 0.8V, 0.8V
- 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
TPS37043BJOFDDFRQ1 FAQ
1.How can I place an order for TPS37043BJOFDDFRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS37043BJOFDDFRQ1 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 TPS37043BJOFDDFRQ1 reliable?
The price and inventory of TPS37043BJOFDDFRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS37043BJOFDDFRQ1 is usually 5 days.
3.What payment methods are accepted for TPS37043BJOFDDFRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS37043BJOFDDFRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS37043BJOFDDFRQ1?
TPS37043BJOFDDFRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS37043BJOFDDFRQ1 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 TPS37043BJOFDDFRQ1?
For technical support, including TPS37043BJOFDDFRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS37043BJOFDDFRQ1 requirements.
6.How does Aetrix verify that TPS37043BJOFDDFRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS37043BJOFDDFRQ1 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 TPS37043BJOFDDFRQ1 meets industry standards.
7.What is the process for return or replacement of TPS37043BJOFDDFRQ1?
All TPS37043BJOFDDFRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS37043BJOFDDFRQ1, 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 TPS37043BJOFDDFRQ1 part is unused and in its original packaging.
Return procedure for TPS37043BJOFDDFRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS37043BJOFDDFRQ1 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…
