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Texas Instruments TLV1824QDRQ1
- Part No.:
- TLV1824QDRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLV1824QDRQ1.pdf
- Description:
- AUTOMOTIVE, QUAD, MICROPOWER HIG
- Quantity:
- Payment:
- Shipping:
Inventory:2,819
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Product details
Overview
TLV1824QDRQ1 from Texas Instruments is an automotive-grade quad-channel comparator with open-drain output, rail-to-rail input (–0.2 V to V+ + 0.2 V), 40 V supply range (2.4 V to 40 V), 5 µA per channel quiescent current, and 420 ns typical propagation delay at 12 V. It operates in HEV/EV powertrain monitoring circuits where high-voltage tolerance and low-power wake-up detection are required.
For engineers reviewing the TLV1824QDRQ1 datasheet, TLV1824QDRQ1 pinout, TLV1824QDRQ1 application, or TLV1824QDRQ1 equivalent, key selection criteria include its AEC-Q100 Grade 1 qualification (–40°C to +125°C), open-drain output capable of 40 V pull-up independent of supply, Power-On Reset (1.7 V POR threshold), and rail-to-rail input with ±500 µV max offset voltage.
Technical Context
The TLV1824QDRQ1 implements a dedicated open-drain output stage with no internal pull-up, enabling logic-level translation and wired-OR bus configurations. Its rail-to-rail input stage uses ESD clamps referenced to V− and a soft upper clamp to V+ with 5 kΩ series resistance, requiring external current limiting if inputs exceed supply rails.
Power-On Reset ensures output remains in a known state until V+ reaches ≥1.7 V, preventing false triggering during system power-up/down. The device supports 40 V absolute maximum output voltage (open-drain), with leakage <0.1 nA at –40°C to +125°C and sinking capability up to 30 mA short-circuit current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.4 V to 40 V - enables direct connection to 12 V, 24 V, and 42 V automotive battery rails without regulation |
| Quiescent Current | 5 µA per channel - supports always-on battery monitoring with minimal standby drain |
| Propagation Delay | 420 ns typical at 100 mV overdrive, 12 V supply - provides fast response for overvoltage/undervoltage fault detection |
| Input Offset Voltage | ±0.5 mV typical, ±4 mV max over –40°C to +125°C - ensures accurate threshold sensing across temperature |
| Output Configuration | Open-drain - allows pull-up to 40 V independent of V+, enabling interface with higher-voltage logic or sensors |
| Power-On Reset Threshold | 1.7 V - guarantees defined output state during cold-cranking (low-battery) conditions |
| ESD Rating | HBM ±2000 V, CDM ±1000 V - meets AEC-Q100 stress requirements for automotive assembly environments |
Pinout & Package
TLV1824QDRQ1 is packaged in a 14-pin SOIC (D package) with nominal body size 3.91 mm × 8.65 mm. The exposed thermal pad must be connected directly to V− for thermal and ESD performance.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | IN1− | Inverting input of comparator 1 - accepts signals down to 0.2 V below V−, critical for ground-referenced sensing |
| 2 | IN1+ | Non-inverting input of comparator 1 - used for precision threshold comparison with rail-to-rail common-mode range |
| 3 | IN2− | Inverting input of comparator 2 - supports dual-sensor monitoring (e.g., high-side and low-side current sense) |
| 4 | IN2+ | Non-inverting input of comparator 2 - enables differential or single-ended signal routing across channels |
| 5 | V+ | Positive supply pin - powers all four comparators; accepts up to 40 V DC |
| 6 | OUT1 | Open-drain output of comparator 1 - requires external pull-up; sinks current only, supports 40 V max pull-up |
| 7 | OUT2 | Open-drain output of comparator 2 - electrically isolated from OUT1; enables independent fault signaling |
| 8 | IN3− | Inverting input of comparator 3 - used for third monitoring channel (e.g., auxiliary battery voltage) |
| 9 | IN3+ | Non-inverting input of comparator 3 - configurable as reference or signal input depending on application |
| 10 | IN4− | Inverting input of comparator 4 - supports fourth independent sensing node (e.g., precharge circuit status) |
| 11 | IN4+ | Non-inverting input of comparator 4 - completes full quad-channel analog monitoring capability |
| 12 | V− | Negative supply pin - common return for all channels and thermal pad connection point |
| 13 | OUT4 | Open-drain output of comparator 4 - supports discrete fault flag generation without shared bus contention |
| 14 | OUT3 | Open-drain output of comparator 3 - provides dedicated output for third fault condition (e.g., thermal shutdown) |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation, meeting automotive powertrain and body control module requirements |
| Rail-to-rail input with ±200 mV overvoltage tolerance | Accepts input signals from V− – 0.2 V to V+ + 0.2 V, eliminating need for level-shifting in 12 V/24 V systems |
| Open-drain output with 40 V absolute max rating | Enables direct interface to 3.3 V, 5 V, 12 V, or 24 V logic buses without external level translators |
| Internal Power-On Reset (POR) | Guarantees stable output until V+ ≥ 1.7 V, preventing spurious faults during engine cranking or battery recovery |
| 420 ns propagation delay at 12 V | Supports real-time overvoltage detection in <500 ns window, critical for IGBT/MOSFET gate protection circuits |
| 5 µA per channel quiescent current | Allows continuous monitoring in always-on domains (e.g., battery disconnect supervision) with <20 µA total system draw |
Applications
| HEV/EV Battery Management | Automotive Body Control Module |
|---|---|
|
Use Scenario: Monitoring cell voltage imbalance and pack overvoltage in 400 V traction battery systems using resistor-divider networks. IC Role / Device Role / Timing Role: Quad comparator performs simultaneous high-accuracy threshold comparisons on four independent voltage nodes. Use Value: 420 ns propagation delay enables rapid isolation of faulty cells before thermal runaway initiates; open-drain outputs interface directly with 40 V-rated fault latches. |
Use Scenario: Detecting door ajar, hood open, and trunk latch status via mechanical switches tied to 12 V battery rail. IC Role / Device Role / Timing Role: TLV1824QDRQ1 acts as voltage presence detector with rail-to-rail input accepting switch-open (12 V) and switch-closed (0 V) states. Use Value: 2.4 V minimum supply allows operation during cold-cranking; 5 µA quiescent current prevents parasitic drain on vehicle battery during sleep mode. |
| Infotainment System Power Sequencing | Power Train Control Unit Supervision |
|
Use Scenario: Validating correct power-up sequence of display backlight, audio amplifier, and MCU rails in dashboard cluster. IC Role / Device Role / Timing Role: Each comparator monitors one rail's voltage against a precision reference; outputs drive enable lines or microcontroller GPIOs. Use Value: Power-On Reset ensures all four outputs remain high-Z until all supplies stabilize, preventing premature initialization of downstream ICs. |
Use Scenario: Supervising gate driver supply voltages and motor phase current feedback in inverter control modules. IC Role / Device Role / Timing Role: TLV1824QDRQ1 compares sensed currents and voltages against safety thresholds to trigger hardware fault interrupts. Use Value: 40 V output rating allows direct connection to 24 V diagnostic bus; ±4 mV offset ensures <1% error in 5 V reference-based overcurrent detection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad open-drain comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV1824QDR | Non-automotive grade; lacks AEC-Q100 qualification and Grade 1 temperature rating | Restricted to industrial or consumer applications; not suitable for under-hood or safety-critical use | Select TLV1824QDRQ1 when automotive qualification, –40°C to +125°C operation, or functional safety documentation is required |
| LM339QDRQ1 | Higher 1.1 mA quiescent current per channel; 300 ns propagation delay; no Power-On Reset; 36 V max supply | Less suitable for ultra-low-power always-on monitoring; lacks guaranteed startup behavior during brownout | Choose TLV1824QDRQ1 for battery-sensitive designs needing <5 µA/channel and deterministic POR behavior |
Compared with TLV1824QDR and LM339QDRQ1, the TLV1824QDRQ1 delivers 220× lower quiescent current than LM339QDRQ1 and adds AEC-Q100 qualification and POR-making it uniquely suited for modern automotive domain controllers requiring both low power and functional safety compliance.
Availability
TLV1824QDRQ1 is available at Aetrix Electronics and suitable for HEV/EV battery management, automotive body control modules, infotainment power sequencing, and power train control unit supervision requiring stable component supply across extended temperature and automotive lifecycle requirements.
Supply support for TLV1824QDRQ1 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 company specializing in analog and embedded processing technologies, with leadership in automotive, industrial, and power management solutions.
The TLV182x-Q1 product line was designed specifically for automotive voltage monitoring and fault detection applications requiring wide supply range, ultra-low power, and AEC-Q100 compliance-targeting powertrain, body, and infotainment subsystems.
FAQ
What is the maximum allowable output voltage on the open-drain pins of TLV1824QDRQ1?
The TLV1824QDRQ1 open-drain outputs support up to 40 V when pulled up externally, independent of the comparator's V+ supply voltage. This is specified in the Absolute Maximum Ratings table and validated per AEC-Q100 test conditions. Exceeding 40 V risks permanent damage. The 40 V rating applies only to the output pin relative to V−; the output must never be shorted directly to V+ at high supply voltages without current limiting.
Does TLV1824QDRQ1 include Power-On Reset, and what is its activation threshold?
Yes, TLV1824QDRQ1 includes an integrated Power-On Reset (POR) circuit that holds outputs in a known state until V+ reaches ≥1.7 V. This threshold is tested and guaranteed across temperature (–40°C to +125°C) and process variation. POR prevents false triggering during cold-cranking or battery recovery events, ensuring reliable startup behavior in automotive applications.
Can TLV1824QDRQ1 operate from a 2.4 V supply, and what is its quiescent current at that voltage?
Yes, TLV1824QDRQ1 is fully specified down to 2.4 V supply. At 2.4 V and 25°C, quiescent current is 6–7.5 µA per channel with output low, rising to ≤8.5 µA over –40°C to +125°C. This enables operation in low-voltage subsystems such as accessory power domains while maintaining rail-to-rail input functionality and 420 ns propagation delay.
How does the rail-to-rail input stage of TLV1824QDRQ1 handle input voltages exceeding the supply rails?
The TLV1824QDRQ1 rail-to-rail input stage includes a low-side ESD clamp to V− and a soft upper clamp to V+ with ~5 kΩ effective resistance. Inputs must not exceed V+ by more than 0.2 V during normal operation. If overvoltage is possible (e.g., sensor transients), TI recommends adding a series current-limiting resistor to restrict clamp current to ≤1 mA - otherwise, reliability and accuracy may degrade.
What package type and thermal considerations apply to TLV1824QDRQ1?
TLV1824QDRQ1 is supplied in a 14-pin SOIC (D package) with an exposed thermal pad on the underside. The pad must be soldered directly to the PCB's V− copper pour to achieve specified thermal resistance (RθJA = 104.2°C/W). Failure to connect the pad degrades power dissipation capability and may cause thermal shutdown under sustained 30 mA sink conditions.
TLV1824QDRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 4
- Output Type:
- Open-Drain, Rail-to-Rail
- Voltage - Supply, Single/Dual (±):
- 2.4V ~ 40V
- :
- 3mV @ 12V
- Voltage - Input Offset (Max):
- 0.15pA @ 12V
- Current - Input Bias (Max):
- 30mA @ 12V
- Current - Output (Typ):
- 6.5µA, 9µA
- Current - Quiescent (Max):
- 100dB PSRR
- CMRR, PSRR (Typ):
- 900ns (Typ)
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 125°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 14-SOIC
TLV1824QDRQ1 FAQ
1.How can I place an order for TLV1824QDRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV1824QDRQ1 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 TLV1824QDRQ1 reliable?
The price and inventory of TLV1824QDRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV1824QDRQ1 is usually 5 days.
3.What payment methods are accepted for TLV1824QDRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV1824QDRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV1824QDRQ1?
TLV1824QDRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV1824QDRQ1 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 TLV1824QDRQ1?
For technical support, including TLV1824QDRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV1824QDRQ1 requirements.
6.How does Aetrix verify that TLV1824QDRQ1 is sourced from the original manufacturer or authorized distributors?
All TLV1824QDRQ1 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 TLV1824QDRQ1 meets industry standards.
7.What is the process for return or replacement of TLV1824QDRQ1?
All TLV1824QDRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TLV1824QDRQ1, 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 TLV1824QDRQ1 part is unused and in its original packaging.
Return procedure for TLV1824QDRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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