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Texas Instruments TPS37AB7806FDSKRQ1
- Part No.:
- TPS37AB7806FDSKRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
TPS37AB7806FDSKRQ1.pdf
- Description:
- AUTOMOTIVE 65-V WINDOW SUPERVISO
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
TPS37AB7806FDSKRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive dual-channel overvoltage/undervoltage detector with independent 65 V-rated SENSE1 (OV) and SENSE2 (UV) inputs, 1 µA typical quiescent current, 1% threshold accuracy (800 mV option), and programmable sense/reset delays via external capacitors. It monitors 12 V/24 V battery rails in telematics control units and body control modules.
For engineers reviewing the TPS37AB7806FDSKRQ1 datasheet, TPS37AB7806FDSKRQ1 pinout, TPS37AB7806FDSKRQ1 application, or TPS37AB7806FDSKRQ1 equivalent, key selection criteria include dual OV/UV detection capability, 65 V SENSE pin rating, 1% voltage threshold accuracy at 800 mV, programmable CTS/CTR timing, and WSON-10 wettable flank package for AOI compatibility.
Technical Context
The TPS37AB7806FDSKRQ1 implements two independent voltage monitoring channels: SENSE1 detects overvoltage conditions with active-high or open-drain RESET1 output, while SENSE2 detects undervoltage with corresponding RESET2 output. Each channel features separate capacitor-programmable sense delay (CTS1/CTS2) and reset delay (CTR1/CTR2), plus manual reset functionality on both CTR pins.
Its internal resistor divider enables fixed-threshold operation without external components, yet high-impedance SENSE inputs support external resistor networks for adjustable thresholds down to 800 mV. The device operates across –40°C to +125°C ambient temperature with built-in hysteresis options of 2–13% or fixed values up to 2.5 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 65 V - supports direct connection to automotive battery systems without level-shifting. |
| Threshold Accuracy | ±1% at 800 mV - ensures precise undervoltage detection critical for low-voltage system recovery. |
| Quiescent Current | 1 µA typical - enables always-on monitoring in battery-powered automotive subsystems. |
| Detection Speed | 10 µs - fast response to transients like cold crank or load dump events. |
| Hysteresis Options | 2% to 13% (1% steps) or fixed 0.5–2.5 V - suppresses false resets during battery voltage ripple. |
| Sense Delay Range | 1.28 ms to 1.28 s (10 nF–10 µF on CTSx) - configurable immunity to short-duration supply glitches. |
| Reset Delay Range | 12.8 ms to 12.8 s (10 nF–10 µF on CTRx) - ensures stable system initialization after fault clearance. |
Pinout & Package
TPS37AB7806FDSKRQ1 uses the WSON-10 (DSK) package: 2.5 mm × 2.5 mm body with wettable flanks for automated optical inspection and non-conductive thermal pad per IEC60664 creepage requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power input | 2.7–65 V supply rail; bypass with 0.1 µF capacitor to GND for noise immunity. |
| SENSE1 | Overvoltage monitor input | 65 V-rated input for detecting rising voltage faults above VITP; supports internal divider or external resistors. |
| SENSE2 | Undervoltage monitor input | 65 V-rated input for detecting falling voltage faults below VITN; independent of VDD voltage level. |
| GND | Ground reference | All GND pins must be electrically connected to PCB ground plane for stable operation. |
| RESET1_OV## | Channel 1 reset output | Open-drain or push-pull output asserting on SENSE1 overvoltage; ## denotes topology (OD/PP) and logic (L/H). |
| RESET2_UV## | Channel 2 reset output | Open-drain or push-pull output asserting on SENSE2 undervoltage; topology matches RESET1 configuration. |
| CTS1 / CTS2 | Capacitor-programmed sense delay | Connect to ground-referenced capacitor to set channel-specific assertion delay (1.28 ms–1.28 s). |
| CTR1/MR / CTR2/MR | Capacitor-programmed reset delay & manual reset | Capacitor sets deassertion delay; driving low forces immediate reset assertion on respective channel. |
| NC (PAD) | No internal connection | Non-conductive thermal pad - may be connected to GND or left floating per layout requirements. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent OV/UV monitoring | Enables simultaneous battery rail supervision and system-level fault isolation in single IC. |
| 65 V-rated SENSE pins | Eliminates need for external voltage clamping circuitry when monitoring 24 V or 48 V automotive subsystems. |
| Programmable timing via capacitors | CTS/CTR pins allow precise, board-level tuning of glitch immunity and reset hold time without firmware changes. |
| Integrated resistor divider | Reduces BOM count and leakage error vs. discrete dividers; supports 800 mV fixed threshold with 1% accuracy. |
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C operation with HBM ±2 kV and CDM ±750 V ESD robustness. |
Applications
| Telematics Control Unit | Emergency Call System |
|---|---|
Use Scenario: Continuous monitoring of 12 V battery voltage during vehicle ignition cycles and GPS/data transmission bursts. IC Role / Device Role / Timing Role: Dual-channel supervisor detecting cold-crank undervoltage (SENSE2) and alternator overvoltage (SENSE1) to trigger controlled MCU reset. Use Value: Prevents data corruption during power transients using 10 µs detection speed and 1.28 ms–1.28 s programmable sense delay. | Use Scenario: Ensuring reliable eCall activation after crash-induced power disruption in ADAS domain controllers. IC Role / Device Role / Timing Role: Generates clean reset pulse to baseband processor upon battery recovery, with hysteresis preventing chatter during marginal voltage recovery. Use Value: Guarantees system restart only after stable supply is restored, using 2.5 V fixed hysteresis option and 12.8 ms–12.8 s reset delay. |
| Audio Amplifier | Head Unit and Cluster |
Use Scenario: Protecting Class-D amplifier ICs from damage due to overvoltage during load dump events in infotainment systems. IC Role / Device Role / Timing Role: OV detector (SENSE1) triggers immediate shutdown signal to amplifier enable pin before voltage exceeds safe operating limits. Use Value: Achieves 65 V SENSE pin rating and 10 µs response to intercept transient spikes before they reach downstream components. | Use Scenario: Managing power sequencing between display controller, touch processor, and CAN interface in digital instrument clusters. IC Role / Device Role / Timing Role: Dual-reset generator providing independent reset signals to multiple SoCs based on distinct voltage thresholds and timing profiles. Use Value: Enables staggered startup via separate CTS/CTR capacitors, reducing inrush current and avoiding bus contention during boot. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS38903AQDBVRQ1 | Single-channel, 65 V SENSE, 1.5% accuracy, no programmable delay; smaller SOT-23-6 package. | Lacks dual OV/UV capability and timing adjustability; suitable only for simpler single-rail monitoring. | Select when space-constrained designs require basic 65 V supervision without dual-channel or delay programming. |
| TLV809E27DBZR | Single-channel, 2.7 V fixed threshold, 3.6 V max VDD, 1.5 µA IQ, SOT-23-3 package. | Not automotive-qualified; limited to low-voltage rails; no hysteresis programming or 65 V tolerance. | Choose only for non-automotive, low-voltage (<6 V) applications where AEC-Q100 compliance is unnecessary. |
Compared with TPS38903AQDBVRQ1 and TLV809E27DBZR, the TPS37AB7806FDSKRQ1 uniquely delivers dual independent OV/UV detection with capacitor-programmable timing and full 65 V SENSE tolerance - essential for robust automotive battery rail supervision where fault isolation and transient immunity are mandatory.
Availability
TPS37AB7806FDSKRQ1 is available at Aetrix Electronics and suitable for telematics control units, emergency call systems, and head unit and cluster applications requiring stable component supply across automotive production lifecycles.
Supply support for TPS37AB7806FDSKRQ1 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 power management and signal conditioning ICs.
The TPS37-Q1 product line was designed specifically for high-reliability automotive voltage monitoring, addressing cold-crank immunity, battery transient suppression, and functional safety requirements in ADAS and infotainment domains.
FAQ
What is the maximum continuous voltage rating for SENSE1 and SENSE2 pins on the TPS37AB7806FDSKRQ1?
The TPS37AB7806FDSKRQ1 specifies 65 V as the maximum continuous operating voltage for both SENSE1 and SENSE2 pins, matching its VDD rating. This allows direct connection to 24 V or 48 V automotive subsystems without external clamping diodes or voltage dividers, provided absolute maximum ratings (–0.3 V to 70 V) are not exceeded during transients. The TPS37AB7806FDSKRQ1 datasheet confirms this rating under Absolute Maximum Ratings section 7.1.
Does the TPS37AB7806FDSKRQ1 support both overvoltage and undervoltage detection on the same input pin?
No, the TPS37AB7806FDSKRQ1 uses dedicated inputs: SENSE1 is configured exclusively for overvoltage (OV) detection with RESET1 output, while SENSE2 is dedicated to undervoltage (UV) detection with RESET2 output. This separation enables independent threshold setting, hysteresis selection, and timing control per channel - a core architectural feature confirmed in the Functional Block Diagram and Pin Functions table of the TPS37AB7806FDSKRQ1 datasheet.
How is the reset delay time programmed on the TPS37AB7806FDSKRQ1?
The reset delay time for each channel is programmed by connecting an external capacitor between CTR1/MR (Channel 1) or CTR2/MR (Channel 2) and GND. The internal resistance is 877–1147 kΩ, yielding a nominal delay range of 12.8 ms to 12.8 s with 10 nF to 10 µF capacitors. Leaving the CTR pin floating selects the shortest delay (~100 µs). This behavior is specified in Electrical Characteristics section 7.5 and Timing Requirements section 7.6 of the TPS37AB7806FDSKRQ1 datasheet.
What package type and dimensions does the TPS37AB7806FDSKRQ1 use?
The TPS37AB7806FDSKRQ1 uses the WSON-10 (DSK) package: 2.5 mm × 2.5 mm body size with wettable flanks for automated optical inspection. The thermal pad is non-conductive to meet IEC60664 creepage requirements between VDD and GND. This package variant is explicitly listed in the Device Information table and Mechanical Drawing Addendum of the TPS37AB7806FDSKRQ1 datasheet.
Is the TPS37AB7806FDSKRQ1 qualified for automotive applications?
Yes, the TPS37AB7806FDSKRQ1 is AEC-Q100 qualified as Grade 1, rated for ambient operating temperatures from –40°C to +125°C. It meets HBM ESD classification level 2 (±2 kV) and CDM level C7B (±750 V), and includes functional safety documentation support. These qualifications are stated in the Features section and verified in the AEC-Q100 test report referenced in the TPS37AB7806FDSKRQ1 datasheet revision history.
TPS37AB7806FDSKRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Voltage Detector
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- 8V, 17.2V
- Output:
- Open Drain, Open Drain
- Reset:
- Active Low
- Reset Timeout:
- 100µs Maximum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-WSON (2.5x2.5)
TPS37AB7806FDSKRQ1 FAQ
1.How can I place an order for TPS37AB7806FDSKRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS37AB7806FDSKRQ1 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 TPS37AB7806FDSKRQ1 reliable?
The price and inventory of TPS37AB7806FDSKRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS37AB7806FDSKRQ1 is usually 5 days.
3.What payment methods are accepted for TPS37AB7806FDSKRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS37AB7806FDSKRQ1 transactions.
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4.How is shipping managed for TPS37AB7806FDSKRQ1?
TPS37AB7806FDSKRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS37AB7806FDSKRQ1 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 TPS37AB7806FDSKRQ1?
For technical support, including TPS37AB7806FDSKRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS37AB7806FDSKRQ1 requirements.
6.How does Aetrix verify that TPS37AB7806FDSKRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS37AB7806FDSKRQ1 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 TPS37AB7806FDSKRQ1 meets industry standards.
7.What is the process for return or replacement of TPS37AB7806FDSKRQ1?
All TPS37AB7806FDSKRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS37AB7806FDSKRQ1, 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 TPS37AB7806FDSKRQ1 part is unused and in its original packaging.
Return procedure for TPS37AB7806FDSKRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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