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Texas Instruments TLV1812QDRQ1
- Part No.:
- TLV1812QDRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLV1812QDRQ1.pdf
- Description:
- AUTOMOTIVE, DUAL MICROPOWER HIGH
- Quantity:
- Payment:
- Shipping:
Inventory:1,795
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Product details
Overview
TLV1812QDRQ1 from Texas Instruments is an AEC-Q100 Grade 1 dual-channel automotive comparator with push-pull output, rail-to-rail input (–0.2 V to V+ + 0.2 V), 420 ns typical propagation delay at 12 V, 5 µA per channel quiescent current, and integrated Power-On Reset (POR) for deterministic startup. It operates across 2.4 V to 40 V supply range and is used in HEV/EV powertrain voltage monitoring and body control module window lift detection.
For engineers reviewing the TLV1812QDRQ1 datasheet, TLV1812QDRQ1 pinout, TLV1812QDRQ1 application, or TLV1812QDRQ1 equivalent, key selection criteria include its 40 V absolute max rating, dual-channel push-pull drive capability, –40°C to +125°C ambient operation, POR functionality, and SOIC-8 package compatibility with automotive PCB layout constraints.
Technical Context
The TLV1812QDRQ1 implements a dual independent comparator core with rail-to-rail input stage enabling full-supply-range sensing, and a push-pull output stage capable of sourcing/sinking ≥4 mA while maintaining VOL ≤ 250 mV and VOH ≤ 250 mV (vs. V+). Its internal POR circuit asserts a known output state until V+ reaches ≥1.7 V, preventing false triggering during system power-up/down sequences.
Each channel features low input offset voltage (±0.5 mV typ, ±4 mV max over temperature), ultra-low input bias current (150 fA typ), and high PSRR (100 dB), supporting precision threshold detection in noisy 12 V/24 V/42 V automotive subsystems without external filtering or trimming.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.4 V to 40 V - supports direct connection to battery rails (12 V, 24 V, 42 V) without pre-regulation |
| Quiescent Current | 5 µA per channel - enables always-on monitoring in low-power vehicle modules (e.g., door open detection) |
| Propagation Delay | 420 ns (low-to-high, 100 mV overdrive, CL = 50 pF) - suitable for fast-response fault detection in motor control feedback loops |
| Input Offset Voltage | ±0.5 mV (typ), ±4 mV (max, –40°C to +125°C) - ensures <10 mV total error in 1% resistor-divider threshold circuits |
| Input Common-Mode Range | –0.2 V to V+ + 0.2 V - allows direct sensing of signals referenced to ground or battery negative in mixed-voltage systems |
| Power-On Reset Threshold | 1.7 V - guarantees stable output state during cold-crank (≥6 V) and slow-battery-rise conditions |
| ESD Rating (HBM) | ±2000 V - meets AEC-Q100-002 for robustness in assembly and field environments |
Pinout & Package
TLV1812QDRQ1 is packaged in an 8-pin SOIC (D) package with 3.91 mm × 4.90 mm body size and standard lead pitch. The exposed thermal pad is absent in this variant (non-WSON).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT1 (Pin 1) | Comparator 1 output | Push-pull driver capable of sinking/sourcing ≥4 mA; no external pull-up required |
| IN1– (Pin 2) | Inverting input, Channel 1 | Rail-to-rail input node; accepts signals from –0.2 V to V+ + 0.2 V |
| IN1+ (Pin 3) | Non-inverting input, Channel 1 | Same rail-to-rail range as IN1–; differential input voltage limited to ±40 V |
| V– (Pin 4) | Negative supply | System ground or battery negative; all inputs and outputs referenced to this node |
| IN2+ (Pin 5) | Non-inverting input, Channel 2 | Independent second channel input; identical specs and range to IN1+/IN1– |
| IN2– (Pin 6) | Inverting input, Channel 2 | Enables dual-threshold or window-comparator configurations without external components |
| OUT2 (Pin 7) | Comparator 2 output | Functionally identical to OUT1; supports redundant sensing or multi-condition logic |
| V+ (Pin 8) | Positive supply | Accepts 2.4 V–40 V; powers both comparators and internal POR circuit |
Key Features
| Feature | Design Value |
|---|---|
| Push-pull output | Eliminates need for external pull-up resistors, reducing BOM count and board space in dual-comparator designs |
| Power-On Reset (POR) | Guarantees defined output state during supply ramp-up, preventing spurious actuation in safety-critical modules |
| Rail-to-rail input | Supports direct interface to sensors and transducers operating at ground or near-V+ levels without level-shifting |
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation, meeting automotive powertrain and body electronics requirements |
| 40 V absolute maximum rating | Withstands load-dump transients up to 42 V, enabling use in 24 V commercial vehicle systems without protection circuitry |
Applications
| HEV/EV Battery Monitoring | Body Control Module (BCM) |
|---|---|
|
Use Scenario: Detecting cell imbalance or overvoltage in 12S–24S lithium-ion battery packs using resistor-divider networks. IC Role / Device Role / Timing Role: Dual comparator performs simultaneous high-side and low-side threshold comparison with 420 ns response to trigger isolation relays. Use Value: Enables real-time fault response within ISO 26262 ASIL-B compliant battery management subsystems. |
Use Scenario: Window lift anti-pinch detection via motor current sensing and position feedback comparison. IC Role / Device Role / Timing Role: One channel monitors current sense amplifier output; second channel compares against calibrated thresholds for stall detection. Use Value: Supports Class 3 functional safety requirements with deterministic POR behavior and <5 µA standby current. |
| Infotainment System Power Sequencing | Advanced Driver Assistance Systems (ADAS) |
|
Use Scenario: Validating proper power-up sequence of display backlight, processor core, and I/O rails before enabling communication interfaces. IC Role / Device Role / Timing Role: Dual comparator independently verifies each rail's presence and stability using precision reference voltages. Use Value: Prevents firmware lockup or display artifacts caused by out-of-spec power sequencing in head-unit modules. |
Use Scenario: Monitoring radar sensor supply integrity and detecting short-circuit faults on 12 V bias lines. IC Role / Device Role / Timing Role: TLV1812QDRQ1 acts as dedicated supervisor IC, comparing sensed voltage against fixed thresholds with 5 µA quiescent draw. Use Value: Maintains continuous supervision during vehicle sleep mode without compromising battery drain budget. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel automotive comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV1822QDRQ1 | Open-drain output instead of push-pull; supports 40 V pull-up independent of V+ | Required when interfacing with higher-voltage logic domains (e.g., 24 V CAN transceiver enable lines) | Select TLV1822QDRQ1 only if level translation or wired-OR functionality is needed; otherwise TLV1812QDRQ1 reduces component count. |
| LM393QPWRQ1 | Higher quiescent current (200 µA vs. 5 µA), slower propagation (1.3 µs), no POR, wider offset (±2 mV) | Suitable for non-safety-critical, cost-sensitive applications where low power and precise startup are not required | Choose LM393QPWRQ1 only for legacy designs or where existing qualification data suffices; TLV1812QDRQ1 offers superior performance in new automotive platforms. |
Compared with TLV1822QDRQ1, TLV1812QDRQ1 eliminates external pull-ups and simplifies PCB routing; compared with LM393QPWRQ1, it delivers 40× lower supply current, 3× faster response, and guaranteed POR behavior-critical for ASIL-B subsystems requiring deterministic initialization.
Availability
TLV1812QDRQ1 is available at Aetrix Electronics and suitable for HEV/EV battery management, body control modules, and infotainment power sequencing requiring stable component supply across automotive production lifecycles.
Supply support for TLV1812QDRQ1 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 signal conditioning and power management solutions.
The TLV181x-Q1 product line was designed specifically for automotive voltage monitoring, fault detection, and power sequencing applications demanding ultra-low power, wide supply range, and AEC-Q100 reliability.
FAQ
What is the maximum supply voltage the TLV1812QDRQ1 can withstand?
The TLV1812QDRQ1 has an absolute maximum supply voltage rating of 42 V between V+ and V–. It operates continuously across 2.4 V to 40 V, making it suitable for 12 V, 24 V, and 42 V automotive battery systems including load-dump transient conditions. Exceeding 42 V risks permanent damage per the Absolute Maximum Ratings table.
Does the TLV1812QDRQ1 require external pull-up resistors on its outputs?
No. The TLV1812QDRQ1 features a push-pull output stage on both channels, eliminating the need for external pull-up resistors. Each output can source and sink ≥4 mA while maintaining VOL ≤ 250 mV and VOH ≤ 250 mV (vs. V+), enabling direct drive of LEDs, MOSFET gates, or logic inputs without additional components.
How does the Power-On Reset (POR) function in the TLV1812QDRQ1 improve system reliability?
The TLV1812QDRQ1 incorporates an internal POR circuit that holds both outputs in a known state until V+ reaches ≥1.7 V. This prevents false triggering during slow power ramps (e.g., cold-crank) or brown-out conditions, ensuring deterministic startup in safety-critical applications like battery disconnect control or window anti-pinch logic.
Can the TLV1812QDRQ1 inputs be driven beyond the supply rails?
No. The TLV1812QDRQ1 rail-to-rail inputs are specified for –0.2 V to V+ + 0.2 V. Input voltages exceeding these limits risk forward-biasing internal ESD clamps, potentially causing excessive current flow. TI recommends limiting input current to ≤1 mA using series resistors if overvoltage exposure is possible.
What package options are available for the TLV1812QDRQ1 besides SOIC-8?
The TLV1812QDRQ1 is offered exclusively in the 8-pin SOIC (D) package per TI's official orderable addendum. Alternate packages such as TSSOP-8, VSSOP-8, SOT-23-8, and WSON-8 are available for other members of the TLV18xx-Q1 family (e.g., TLV1812IDRQ1, TLV1812QDGKRQ1), but TLV1812QDRQ1 is SOIC-8 only.
TLV1812QDRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 2
- Output Type:
- Push-Pull, Rail-to-Rail
- Voltage - Supply, Single/Dual (±):
- 2.4V ~ 40V
- :
- 3mV @ 12V
- Voltage - Input Offset (Max):
- 0.15pA @ 12V
- Current - Input Bias (Max):
- 30mA
- Current - Output (Typ):
- 9µA
- Current - Quiescent (Max):
- 100dB PSRR
- CMRR, PSRR (Typ):
- 900ns (Typ)
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 125°C (TA)
- Operating Temperature:
- Automotive
- Grade:
- AEC-Q100
- Qualification:
- Surface Mount
- :
- 8-SOIC
TLV1812QDRQ1 FAQ
1.How can I place an order for TLV1812QDRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV1812QDRQ1 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 TLV1812QDRQ1 reliable?
The price and inventory of TLV1812QDRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV1812QDRQ1 is usually 5 days.
3.What payment methods are accepted for TLV1812QDRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV1812QDRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV1812QDRQ1?
TLV1812QDRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV1812QDRQ1 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 TLV1812QDRQ1?
For technical support, including TLV1812QDRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV1812QDRQ1 requirements.
6.How does Aetrix verify that TLV1812QDRQ1 is sourced from the original manufacturer or authorized distributors?
All TLV1812QDRQ1 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 TLV1812QDRQ1 meets industry standards.
7.What is the process for return or replacement of TLV1812QDRQ1?
All TLV1812QDRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TLV1812QDRQ1, 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 TLV1812QDRQ1 part is unused and in its original packaging.
Return procedure for TLV1812QDRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLV1812QDRQ1 Tags
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LM2903DR
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LM339DR
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LM339PWR
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LM393DT
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LM2903DT
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LM393DR
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LM239DR
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LM339APWR
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LM2903P
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NCX2200GMAZ
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