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Texas Instruments TLV1811QDBVRQ1
- Part No.:
- TLV1811QDBVRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TLV1811QDBVRQ1.pdf
- Description:
- AUTOMOTIVE, SINGLE-CHANNEL MICRO
- Quantity:
- Payment:
- Shipping:
Inventory:3,109
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Product details
Overview
TLV1811QDBVRQ1 from Texas Instruments is an automotive-grade single-channel rail-to-rail input comparator with push-pull output, qualified per AEC-Q100 Grade 1 (–40°C to +125°C), operating from 2.4V to 40V supply, consuming only 5μA per channel, and delivering 420ns typical propagation delay. It integrates Power-On Reset (POR) for deterministic startup and is used in HEV/EV powertrain voltage monitoring circuits.
For engineers reviewing the TLV1811QDBVRQ1 datasheet, TLV1811QDBVRQ1 pinout, TLV1811QDBVRQ1 application, or TLV1811QDBVRQ1 equivalent, key selection considerations include its 40V absolute max supply rating, rail-to-rail input range extending 200mV beyond rails, push-pull output capable of sourcing/sinking ≥4mA, and functional safety documentation support for ISO 26262-compliant systems.
Technical Context
The TLV1811QDBVRQ1 implements a precision comparator core with internal biasing and POR circuitry that holds output in a known state until V+ reaches ≥1.7V, preventing false triggering during power ramp-up or brownout. Its rail-to-rail input stage uses ESD-protected diode clamps referenced to V− and V+, limiting valid common-mode range to (V−) − 0.2V to (V+) + 0.2V.
As a push-pull output device, it drives high/low actively without external pull-ups-supporting direct LED indication or MOSFET gate control-and features output short-circuit current limiting (<35mA) with internal clamping to both supply rails. Input offset voltage is ±0.5mV typ at 25°C and ±4mV over full temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.4V to 40V - supports direct connection to 12V/24V/42V automotive battery rails without regulation. |
| Quiescent Current | 5μA per channel - enables always-on monitoring in low-power vehicle subsystems like body control modules. |
| Propagation Delay | 420ns at 100mV overdrive, CL = 50pF - provides fast response for overvoltage/undervoltage fault detection in powertrain systems. |
| Input Offset Voltage | ±0.5mV (typ), ±4mV (max, –40°C to +125°C) - ensures accurate threshold comparison across automotive temperature extremes. |
| Rail-to-Rail Input Range | (V−) − 0.2V to (V+) + 0.2V - allows direct sensing of signals near supply rails, e.g., battery voltage monitoring down to ground. |
| Output Type | Push-pull - eliminates need for external pull-up resistors and supports bidirectional drive (e.g., driving logic inputs or LEDs). |
| Power-On Reset Threshold | 1.7V - guarantees defined output state during cold-cranking or low-battery conditions before full system power-up. |
Pinout & Package
SOT-23-5 package (DBV), 1.60mm × 2.90mm body size, with standard "North West" pinout. Thermal pad not present in DBV variant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT | Output | Push-pull output node; actively drives high (to V+) or low (to V−); no external pull-up required. |
| 2 - V− | Negative Supply | Ground or low-side supply reference; all internal biasing and ESD clamps referenced to this pin. |
| 3 - IN+ | Non-Inverting Input | High-impedance analog input (150fA bias current); accepts signals within rail-to-rail common-mode range. |
| 4 - IN− | Inverting Input | High-impedance analog input; differential input voltage up to ±40V allowed, but common-mode limited to (V−) − 0.2V to (V+) + 0.2V. |
| 5 - V+ | Positive Supply | Main supply input; supports up to 40V; powers internal bias, POR, and output stage. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation - suitable for under-hood and powertrain applications without derating. |
| Power-On Reset (POR) | Guarantees known output state until V+ ≥ 1.7V - prevents spurious faults during engine start or battery recovery. |
| 40V Absolute Maximum Supply Rating | Withstands load-dump transients up to 42V - eliminates need for external TVS or regulator in 24V commercial vehicle designs. |
| Rail-to-Rail Input with 200mV Overvoltage Margin | Enables direct sensing of battery voltage, sensor outputs, or regulated supplies without level-shifting circuitry. |
| Push-Pull Output with 4mA Drive Capability | Drives logic inputs, LEDs, or MOSFET gates directly - reduces BOM count and PCB area vs. open-drain + pull-up solutions. |
| Functional Safety Documentation Support | Includes FIT rate, failure mode analysis, and diagnostic coverage guidance - accelerates ASIL-B/C system certification. |
Applications
| HEV/EV Battery Monitoring | Automotive Body Control Module |
|---|---|
Use Scenario: Real-time detection of cell overvoltage or pack undervoltage in 400V traction battery systems using resistor-divider feedback. IC Role / Device Role / Timing Role: Precision voltage comparator with POR ensures reliable fault flag assertion during power-up and transient events. Use Value: 420ns propagation delay enables sub-millisecond response to critical battery faults, supporting ISO 26262 ASIL-C timing requirements. |
Use Scenario: Window lift motor stall detection by comparing current-sense amplifier output against fixed threshold. IC Role / Device Role / Timing Role: Low-quiescent-current comparator interfaces directly with 12V battery-supplied current sense circuitry. Use Value: 5μA supply current minimizes parasitic drain on vehicle battery during sleep mode, extending off-state duration. |
| Infotainment System Power Sequencing | ADAS Camera Power Supervision |
Use Scenario: Validating proper ramp-up sequence of multiple DC/DC rails (e.g., 5V, 3.3V, 1.8V) before enabling processor reset. IC Role / Device Role / Timing Role: Multi-threshold monitoring via resistor networks; push-pull output drives enable lines directly. Use Value: Rail-to-rail input allows accurate sensing of each rail's final value without signal conditioning, reducing component count. |
Use Scenario: Monitoring 12V camera supply for brownout or reverse-polarity conditions prior to image sensor activation. IC Role / Device Role / Timing Role: High-voltage tolerant comparator detects supply faults before powering sensitive CMOS image sensors. Use Value: 40V absolute max rating permits direct connection to unregulated camera harness voltage, eliminating protection diodes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV1821QDBVRQ1 | Open-drain output; supports 40V pull-up independent of supply; no sourcing capability. | Required where wired-OR logic, level translation, or higher-voltage interface (e.g., CAN bus wake-up) is needed. | Select TLV1821QDBVRQ1 when output must interface with >V+ logic domains or share a common bus line. |
| LM393QPWRQ1 | Higher quiescent current (200μA), slower propagation (1.3μs), no POR, wider offset (±2mV), open-drain only. | Suitable for cost-sensitive, non-safety-critical functions where speed and ultra-low power are not required. | Choose LM393QPWRQ1 only for legacy-compatible, low-performance monitoring where BOM cost dominates design priorities. |
Compared with TLV1811QDBVRQ1, TLV1821QDBVRQ1 offers voltage-level flexibility at the expense of active high drive, while LM393QPWRQ1 trades performance and safety features for lower unit cost in non-critical subsystems.
Availability
TLV1811QDBVRQ1 is available at Aetrix Electronics and suitable for HEV/EV battery management, automotive body control modules, and infotainment power sequencing requiring stable component supply across extended temperature and long product lifecycles.
Supply support for TLV1811QDBVRQ1 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 compliance.
The TLV181x-Q1 family was engineered specifically for automotive voltage monitoring and fault detection applications demanding wide supply range, ultra-low power, and AEC-Q100 reliability - targeting powertrain, chassis, and ADAS subsystems.
FAQ
What is the maximum supply voltage rating for TLV1811QDBVRQ1?
The TLV1811QDBVRQ1 has an absolute maximum supply voltage (V+ to V−) of 42V, with recommended operation up to 40V. This rating allows direct integration into 24V commercial vehicle systems and tolerance of ISO 7637-2 load-dump transients without external protection components. The device remains fully functional and protected within this limit when used per datasheet guidelines.
Does TLV1811QDBVRQ1 support rail-to-rail input operation?
Yes, TLV1811QDBVRQ1 supports rail-to-rail input operation with a common-mode range from (V−) − 0.2V to (V+) + 0.2V. This enables accurate sensing of signals at or near the supply rails - such as battery voltage or regulated reference levels - without external level-shifting circuitry. Input phase inversion is avoided within this specified range.
What is the purpose of the Power-On Reset (POR) feature in TLV1811QDBVRQ1?
The Power-On Reset (POR) feature in TLV1811QDBVRQ1 holds the output in a known logic state (determined by internal circuitry) until the supply voltage V+ rises above 1.7V. This prevents erratic or undefined output behavior during power-up, cold-cranking, or brownout conditions - critical for reliable fault flagging in automotive safety systems.
Can TLV1811QDBVRQ1 drive a MOSFET gate directly?
Yes, TLV1811QDBVRQ1 can drive a MOSFET gate directly due to its push-pull output stage, which sources and sinks ≥4mA. This allows rapid charging/discharging of typical small-signal MOSFET gate capacitances without external drivers. Ensure gate voltage stays within the device's output swing limits: VOL ≤ 250mV (sinking) and VOH ≤ (V+) − 250mV (sourcing) at 4mA load.
Is TLV1811QDBVRQ1 qualified for automotive applications?
Yes, TLV1811QDBVRQ1 is AEC-Q100 qualified for automotive applications, with Device Temperature Grade 1 (–40°C to +125°C ambient), HBM ESD classification Level 2 (±2kV), and CDM Level C3 (±1kV). It is designed and tested for use in safety-critical systems including HEV/EV powertrain, body control, and ADAS modules.
TLV1811QDBVRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- SC-74A, SOT-753
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 1
- Output Type:
- Push-Pull, Rail-to-Rail
- Voltage - Supply, Single/Dual (±):
- 2.4V ~ 40V
- :
- 3mV @ 12V
- Voltage - Input Offset (Max):
- 0.15pA (Typ)
- Current - Input Bias (Max):
- 30mA @ 12V
- Current - Output (Typ):
- 10µA
- Current - Quiescent (Max):
- 100dB PSRR
- CMRR, PSRR (Typ):
- 900ns (Typ)
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 125°C
- Operating Temperature:
- Automotive
- Grade:
- AEC-Q100
- Qualification:
- Surface Mount
- :
- SOT-23-5
TLV1811QDBVRQ1 FAQ
1.How can I place an order for TLV1811QDBVRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV1811QDBVRQ1 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 TLV1811QDBVRQ1 reliable?
The price and inventory of TLV1811QDBVRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV1811QDBVRQ1 is usually 5 days.
3.What payment methods are accepted for TLV1811QDBVRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV1811QDBVRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV1811QDBVRQ1?
TLV1811QDBVRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV1811QDBVRQ1 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 TLV1811QDBVRQ1?
For technical support, including TLV1811QDBVRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV1811QDBVRQ1 requirements.
6.How does Aetrix verify that TLV1811QDBVRQ1 is sourced from the original manufacturer or authorized distributors?
All TLV1811QDBVRQ1 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 TLV1811QDBVRQ1 meets industry standards.
7.What is the process for return or replacement of TLV1811QDBVRQ1?
All TLV1811QDBVRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TLV1811QDBVRQ1, 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 TLV1811QDBVRQ1 part is unused and in its original packaging.
Return procedure for TLV1811QDBVRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLV1811QDBVRQ1 Tags
-
LM2903DR
Texas Instruments
-
LM339DR
Texas Instruments
-
LM339PWR
Texas Instruments
-
LM393DT
STMicroelectronics
-
LM2901PWR
Texas Instruments
-
LM2903DT
STMicroelectronics
-
LM393DR
Texas Instruments
-
LM239DR
Texas Instruments
-
LM339APWR
Texas Instruments
-
LM2903P
Texas Instruments
-
LM393ADR
Texas Instruments
-
NCX2200GMAZ
NXP Semiconductors
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