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Texas Instruments TLV1811LQDBVRQ1
- Part No.:
- TLV1811LQDBVRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TLV1811LQDBVRQ1.pdf
- Description:
- AUTOMOTIVE, SINGLE-CHANNEL MICRO
- Quantity:
- Payment:
- Shipping:
Inventory:2,749
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Product details
Overview
TLV1811LQDBVRQ1 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), 2.4V–40V supply range, 5μA quiescent current per channel, and 420ns typical propagation delay. It integrates Power-On Reset (POR) for deterministic startup and is used in HEV/EV powertrain voltage monitoring and body control module overvoltage detection circuits.
For engineers reviewing the TLV1811LQDBVRQ1 datasheet, TLV1811LQDBVRQ1 pinout, TLV1811LQDBVRQ1 application, or TLV1811LQDBVRQ1 equivalent, key selection criteria include its 40V absolute max supply rating, rail-to-rail input stage extending 200mV beyond rails, push-pull output capable of sourcing/sinking 4mA, POR threshold at 1.7V, and SOT-23-5 "LMC72x1/TLV72x1-type" pinout compatibility.
Technical Context
The TLV1811LQDBVRQ1 implements a precision comparator core with internal biasing and a dedicated Power-On Reset circuit that holds the output in a known state until V+ reaches ≥1.7V, preventing false triggering during system power-up/down transients. Its rail-to-rail input stage uses ESD clamps referenced to V− and V+, limiting valid common-mode range to (V−) − 0.2V to (V+) + 0.2V.
This device belongs to the TLV181x-Q1 family featuring push-pull outputs-unlike the open-drain TLV182x-Q1 variants-and shares identical electrical specs including 500μV max input offset voltage, ±1.2μV/°C offset drift, and 100dB PSRR across 2.4V–40V supply. It is not functionally interchangeable with TLV1811-Q1 due to reversed supply pin assignment (V− on Pin 5, V+ on Pin 2).
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 external regulation |
| Quiescent Current | 7.5μA typical at 25°C - enables always-on monitoring in low-power vehicle subsystems |
| Propagation Delay | 420ns at 100mV overdrive, CL = 50pF - provides fast response for fault detection in safety-critical powertrain circuits |
| Input Offset Voltage | ±0.5mV typical, ±4mV max over –40°C to +125°C - ensures accurate threshold detection across full automotive temperature range |
| Power-On Reset Threshold | 1.7V - guarantees stable output state until MCU or host controller supply is fully established |
| Rail-to-Rail Input Range | (V−) − 0.2V to (V+) + 0.2V - allows direct sensing of signals near supply rails, e.g., battery voltage or sensor outputs |
| Output Drive Capability | Sinks/sources 4mA at VOL/VOH ≤ 250mV - drives LEDs directly or switches MOSFET gates without external buffers |
Pinout & Package
SOT-23-5 package (1.60mm × 2.90mm body), "LMC72x1/TLV72x1-type" pinout (TLV1811L-Q1 variant), with exposed pad thermally connected to V−.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: OUT | Push-pull output | Active-high/low digital output; sinks/source current up to 4mA; must not be shorted to V+ or V− |
| 2: V+ | Positive supply | Primary supply input; accepts 2.4V–40V; connects to automotive battery or regulated rail |
| 3: IN+ | Non-inverting input | Differential input terminal; valid common-mode range extends 200mV beyond V− and V+ |
| 4: IN− | Inverting input | Differential input terminal; same CMR as IN+; unused inputs must be biased with ≥50mV differential |
| 5: V− | Negative supply | Ground or low-side reference; thermal pad must be soldered to PCB ground plane for thermal stability |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation, meeting automotive reliability and lifetime requirements |
| Integrated Power-On Reset (POR) | Ensures output remains in defined logic state until V+ ≥ 1.7V, eliminating spurious outputs during cold cranking |
| Rail-to-rail input stage | Enables direct interface with sensors, battery monitors, or reference voltages operating near supply rails |
| 40V absolute maximum supply rating | Withstands load-dump transients up to 42V without damage, reducing need for external protection circuitry |
| 5kΩ input ESD clamp to V+ | Provides soft-clamp protection for inputs; requires external current limiting if VIN exceeds V+ by >200mV |
Applications
| HEV/EV Battery Monitoring | Body Control Module (BCM) Overvoltage Protection |
|---|---|
|
Use Scenario: Detecting cell imbalance or pack overvoltage in 400V traction battery systems using resistor-divider feedback. IC Role / Device Role / Timing Role: Precision comparator comparing scaled battery voltage against reference; triggers isolation relay shutdown within 420ns. Use Value: Enables compliance with ISO 26262 ASIL-B functional safety requirements via deterministic POR behavior and wide supply tolerance. |
Use Scenario: Monitoring 12V auxiliary battery voltage to prevent damage from alternator overvoltage events (>18V). IC Role / Device Role / Timing Role: High-speed comparator detecting overvoltage condition and asserting fault signal to BCM microcontroller. Use Value: 40V absolute max rating eliminates need for external TVS, while 5μA quiescent current preserves battery life during sleep mode. |
| Infotainment System Power Sequencing | Automotive Lighting Control |
|
Use Scenario: Validating stable 3.3V/5V rail presence before enabling display backlight or audio amplifier ICs. IC Role / Device Role / Timing Role: Supply supervisor comparator with POR ensuring clean enable signal generation during cold-start ramp-up. Use Value: 1.7V POR threshold aligns with typical LDO dropout voltages, guaranteeing reliable sequencing without external reset IC. |
Use Scenario: Driving high-brightness LED strings in adaptive front lighting systems using PWM-controlled MOSFET gate drive. IC Role / Device Role / Timing Role: Comparator converting analog current-sense signal into fast-switching gate control signal for N-channel MOSFET. Use Value: Push-pull output sources/sinks 4mA directly, eliminating pull-up resistors and reducing BOM count and board space. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV1811QDBVRQ1 | Standard "North West" pinout: V+ on Pin 5, V− on Pin 2 - incompatible PCB layout | Same electrical specs but requires different footprint; no POR timing difference | Select TLV1811QDBVRQ1 only when redesigning for legacy TLV1811-Q1 compatibility |
| TLV1821LQDBVRQ1 | Open-drain output; supports 40V pull-up independent of supply; no sourcing capability | Required for wired-OR bus interfaces or level-shifting where output must exceed V+ | Choose TLV1821LQDBVRQ1 when interfacing with 24V logic or implementing fault-bus arbitration |
Compared with TLV1811LQDBVRQ1, TLV1811QDBVRQ1 demands PCB rework due to inverted supply pins, while TLV1821LQDBVRQ1 trades push-pull drive for open-drain flexibility-neither is pin-compatible, but both share identical thermal, offset, and speed performance.
Availability
TLV1811LQDBVRQ1 is available at Aetrix Electronics and suitable for HEV/EV battery management, automotive body control modules, and infotainment power sequencing requiring stable component supply under AEC-Q100 Grade 1 conditions.
Supply support for TLV1811LQDBVRQ1 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 electronics and functional safety design.
The TLV181x-Q1 product line delivers ultra-low-power, high-voltage comparators optimized for automotive subsystems requiring robust operation across extended temperature ranges and harsh electrical environments.
FAQ
What is the pinout configuration of TLV1811LQDBVRQ1?
The TLV1811LQDBVRQ1 uses the "LMC72x1/TLV72x1-type" SOT-23-5 pinout: Pin 1 = OUT, Pin 2 = V+, Pin 3 = IN+, Pin 4 = IN−, Pin 5 = V−. This differs from the standard TLV1811-Q1 pinout where V+ and V− are swapped. Always verify layout against TI's SLVSCE7B datasheet revision to avoid misconnection.
Does TLV1811LQDBVRQ1 support 42V load-dump transients?
Yes, TLV1811LQDBVRQ1 has an absolute maximum supply rating of 42V, making it suitable for automotive applications subject to ISO 7637-2 load-dump pulses. Its 40V recommended operating range and internal protection allow direct connection to unregulated battery rails without external clamping diodes in most cases.
How does the Power-On Reset (POR) function in TLV1811LQDBVRQ1?
The TLV1811LQDBVRQ1 incorporates an internal POR circuit that holds the output in a known logic state until the V+ supply reaches ≥1.7V. This prevents metastability or false triggering during slow power ramps, such as those seen in automotive cold-cranking scenarios, ensuring deterministic startup behavior critical for safety systems.
Can TLV1811LQDBVRQ1 drive a MOSFET gate directly?
Yes, TLV1811LQDBVRQ1's push-pull output can source and sink up to 4mA with VOL/VOH ≤ 250mV, enabling direct drive of small-signal MOSFET gates (e.g., SiC or low-threshold Si FETs). For larger gate capacitances, add a series resistor to limit peak current and prevent ringing, per TI's application guidance in SNOSDC9D Section 7.4.2.1.
What is the input common-mode voltage range for TLV1811LQDBVRQ1?
The TLV1811LQDBVRQ1 supports a rail-to-rail input common-mode range from (V−) − 0.2V to (V+) + 0.2V across –40°C to +125°C. This allows direct sensing of signals at or slightly beyond supply rails-such as battery voltage or sensor outputs-without level-shifting circuitry, provided input current is limited to <1mA when exceeding rails.
TLV1811LQDBVRQ1 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
TLV1811LQDBVRQ1 FAQ
1.How can I place an order for TLV1811LQDBVRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV1811LQDBVRQ1 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 TLV1811LQDBVRQ1 reliable?
The price and inventory of TLV1811LQDBVRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV1811LQDBVRQ1 is usually 5 days.
3.What payment methods are accepted for TLV1811LQDBVRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV1811LQDBVRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV1811LQDBVRQ1?
TLV1811LQDBVRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV1811LQDBVRQ1 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 TLV1811LQDBVRQ1?
For technical support, including TLV1811LQDBVRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV1811LQDBVRQ1 requirements.
6.How does Aetrix verify that TLV1811LQDBVRQ1 is sourced from the original manufacturer or authorized distributors?
All TLV1811LQDBVRQ1 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 TLV1811LQDBVRQ1 meets industry standards.
7.What is the process for return or replacement of TLV1811LQDBVRQ1?
All TLV1811LQDBVRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TLV1811LQDBVRQ1, 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 TLV1811LQDBVRQ1 part is unused and in its original packaging.
Return procedure for TLV1811LQDBVRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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