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Texas Instruments TLV1812QPWRQ1
- Part No.:
- TLV1812QPWRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TLV1812QPWRQ1.pdf
- Description:
- AUTOMOTIVE, DUAL MICROPOWER HIGH
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
TLV1812QPWRQ1 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 circuits where low-power, high-voltage tolerance, and reliable power-up behavior are critical.
For engineers reviewing the TLV1812QPWRQ1 datasheet, TLV1812QPWRQ1 pinout, TLV1812QPWRQ1 application, or TLV1812QPWRQ1 equivalent, key selection criteria include its dual-channel push-pull architecture, –40°C to +125°C ambient operation, 500 µV max input offset voltage, open-drain compatibility via external pull-up, and functional safety documentation support for ISO 26262 system design.
Technical Context
The TLV1812QPWRQ1 implements a rail-to-rail input stage with internal ESD clamps referenced to V− and V+, enabling operation with input signals extending 200 mV beyond either supply rail. Its push-pull output stage actively sources and sinks current-capable of driving MOSFET gates or LEDs without external pull-ups-while maintaining 250 mV VOL and VOH at 4 mA load over full temperature range.
Power-On Reset ensures the output remains latched in a known state until V+ reaches ≥1.7 V, eliminating false triggering during system ramp-up or brownout conditions. The device's 40 V absolute maximum supply rating and 420 ns propagation delay at 100 mV overdrive are validated across 2.4 V–40 V supply and –40°C to +125°C ambient, with thermal metrics optimized for TSSOP-8 (PW) package (RθJA = 187.5°C/W).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.4 V to 40 V - supports direct connection to 12 V, 24 V, and 42 V automotive battery rails without regulation. |
| Quiescent Current | 5 µA per channel - enables always-on monitoring in low-power vehicle subsystems (e.g., battery disconnect detection). |
| Propagation Delay | 420 ns (typ) at 100 mV overdrive, CL = 50 pF - provides fast response for overvoltage/undervoltage fault detection in powertrain control. |
| Input Offset Voltage | ±0.5 mV (typ), ±4 mV (max, –40°C to +125°C) - ensures accurate threshold comparison in precision sensing applications like cell-balancing monitors. |
| Input Common-Mode Range | –0.2 V to V+ + 0.2 V - allows direct interface with unbuffered battery taps or shunt-based current sense amplifiers. |
| Output Type | Push-pull - eliminates need for external pull-up resistors, reduces board space, and enables direct LED/MOSFET gate drive. |
| POR Threshold | 1.7 V - guarantees stable output assertion only after sufficient supply stabilization, preventing spurious wake-up in start-stop systems. |
Pinout & Package
TSSOP-8 (PW) package: 3.00 mm × 4.40 mm body, exposed thermal pad connected directly to V− pin for improved thermal performance in automotive under-hood environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT1 | Comparator 1 output | Push-pull active driver - sinks/sourses current; must not be wired to another output or shorted to V+ or V−. |
| IN1− | Inverting input, channel 1 | Differential input node - accepts signals down to 0.2 V below V−; clamp-limited to prevent ESD damage if overdriven. |
| IN1+ | Non-inverting input, channel 1 | Differential input node - supports rail-to-rail common-mode range; requires ≥50 mV differential if unused to avoid chatter. |
| V− | Negative supply | Reference return for inputs, outputs, and thermal pad - all internal biasing and ESD protection reference this node. |
| IN2+ | Non-inverting input, channel 2 | Independent comparator input - identical electrical specs to IN1+; usable for redundant sensing or dual-threshold logic. |
| IN2− | Inverting input, channel 2 | Independent comparator input - supports same rail-to-rail range and noise immunity as IN1−. |
| OUT2 | Comparator 2 output | Second independent push-pull output - enables dual-fault detection (e.g., high-side + low-side overvoltage). |
| V+ | Positive supply | Main power rail input - supports up to 40 V; powers internal bias, POR, and output stage; connects to battery or regulated rail. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input with 200 mV overvoltage margin | Enables direct connection to unregulated battery nodes without level-shifting or external clamping diodes. |
| Integrated Power-On Reset (POR) | Guarantees output remains in defined state until V+ ≥ 1.7 V, eliminating false triggers during cold-cranking or ignition cycles. |
| 40 V absolute maximum supply rating | Withstands load-dump transients up to 42 V without damage, meeting ISO 7637-2 Pulse 5a requirements when properly decoupled. |
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation, HBM ±2 kV, CDM ±1 kV - suitable for engine bay and powertrain ECUs. |
| Functional safety documentation support | Includes FIT rate, failure mode analysis, and diagnostic coverage guidance for ASIL-B system integration per ISO 26262. |
Applications
| HEV/EV Battery Management | Automotive Body Control Module |
|---|---|
Use Scenario: Monitoring individual cell voltages in 400 V traction battery packs using resistive dividers. IC Role / Device Role / Timing Role: Dual-channel comparator performing simultaneous overvoltage and undervoltage detection on adjacent cells. Use Value: 420 ns propagation delay enables rapid fault isolation; 5 µA quiescent current minimizes standby drain on auxiliary battery. |
Use Scenario: Detecting door-open status via magnetic reed switch closure in latch assemblies. IC Role / Device Role / Timing Role: Single comparator channel converting mechanical switch closure into clean digital signal for microcontroller GPIO. Use Value: Rail-to-rail input accommodates wide V− variation across vehicle grounds; push-pull output drives MCU input directly without pull-up resistor. |
| Infotainment Display Backlight Control | Powertrain Engine Control Unit |
Use Scenario: Enabling LED backlight drivers based on ambient light sensor output crossing programmable thresholds. IC Role / Device Role / Timing Role: Dual comparator implementing hysteresis window detection for flicker-free dimming transitions. Use Value: 500 µV max input offset ensures consistent turn-on/turn-off points across temperature; 40 V supply range supports direct 12 V rail connection. |
Use Scenario: Validating crankshaft position sensor signal integrity before enabling fuel injection timing. IC Role / Device Role / Timing Role: Comparator conditioning analog Hall-effect sensor output into clean square wave for ECU timing logic. Use Value: POR prevents erroneous crank signal during engine cranking; 2.4 V minimum supply allows operation during low-battery cranking events. |
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 |
|---|---|---|---|
| TLV1822QPWRQ1 | Open-drain output instead of push-pull; identical supply range, quiescent current, and propagation delay. | Requires external pull-up for logic-high assertion; supports voltage-level translation up to 40 V independent of V+. | Select when interfacing with higher-voltage logic domains or implementing wired-OR fault buses. |
| LM393QPWRQ1 | Higher quiescent current (200 µA vs. 5 µA), slower propagation (1.3 µs), no POR, and no rail-to-rail input. | Limited to lower-speed, non-critical monitoring; unsuitable for battery-sensitive or fast-fault applications. | Choose only for legacy cost-sensitive designs where power and speed are secondary to part familiarity. |
Compared with TLV1812QPWRQ1, TLV1822QPWRQ1 offers output flexibility at the cost of external component dependency, while LM393QPWRQ1 trades significant power and speed penalties for broader legacy availability-neither is pin-compatible, requiring PCB layout changes.
Availability
TLV1812QPWRQ1 is available at Aetrix Electronics and suitable for HEV/EV battery management, automotive body control modules, and infotainment display systems requiring stable component supply, AEC-Q100 compliance, and long-term automotive lifecycle support.
Supply support for TLV1812QPWRQ1 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 certification.
The TLV181x-Q1 product line delivers ultra-low-power, high-voltage comparators engineered specifically for automotive powertrain, chassis, and body electronics where reliability, wide supply range, and deterministic startup are mandatory.
FAQ
What is the maximum supply voltage the TLV1812QPWRQ1 can withstand?
The TLV1812QPWRQ1 has an absolute maximum supply voltage (V+ to V−) of 42 V. It is rated for continuous operation up to 40 V and designed to survive automotive load-dump transients per ISO 7637-2 when properly decoupled. Exceeding 42 V risks permanent damage to internal ESD structures and output transistors.
Does the TLV1812QPWRQ1 require external pull-up resistors on its outputs?
No, the TLV1812QPWRQ1 features a push-pull output stage that actively sources and sinks current, eliminating the need for external pull-up resistors. This reduces component count and board space-especially valuable in compact automotive modules-while enabling direct drive of LEDs or MOSFET gates without additional passive components.
How does the Power-On Reset (POR) function in the TLV1812QPWRQ1 improve system reliability?
The TLV1812QPWRQ1's POR circuit holds both outputs in a known state until V+ reaches ≥1.7 V, preventing false logic transitions during power-up, cold cranking, or brownout conditions. This ensures deterministic behavior in safety-critical automotive functions such as battery disconnect control or engine start validation-where spurious outputs could trigger unintended actions.
Can the TLV1812QPWRQ1 interface directly with a 48 V battery system?
No-the TLV1812QPWRQ1's absolute maximum supply rating is 42 V, and recommended operating range is 2.4 V to 40 V. Direct connection to a nominal 48 V system exceeds these limits and risks device failure. For 48 V architectures, use a pre-regulator or select a higher-voltage comparator such as the TLV1812QPWRQ1's successor family with 65 V rating.
Is the TLV1812QPWRQ1 pin-compatible with standard industry dual comparators like LM393?
No, the TLV1812QPWRQ1 uses a proprietary TSSOP-8 pinout optimized for automotive thermal and noise performance-not pin-compatible with LM393 or other legacy dual comparators. Its pin mapping (e.g., V− on Pin 4, OUT1 on Pin 1) differs fundamentally, requiring dedicated PCB layout and cannot serve as a drop-in replacement without redesign.
TLV1812QPWRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-TSSOP (0.173", 4.40mm 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 @ 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:
- Automotive
- Grade:
- AEC-Q100
- Qualification:
- Surface Mount
- :
- 8-TSSOP
TLV1812QPWRQ1 FAQ
1.How can I place an order for TLV1812QPWRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV1812QPWRQ1 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 TLV1812QPWRQ1 reliable?
The price and inventory of TLV1812QPWRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV1812QPWRQ1 is usually 5 days.
3.What payment methods are accepted for TLV1812QPWRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV1812QPWRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV1812QPWRQ1?
TLV1812QPWRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV1812QPWRQ1 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 TLV1812QPWRQ1?
For technical support, including TLV1812QPWRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV1812QPWRQ1 requirements.
6.How does Aetrix verify that TLV1812QPWRQ1 is sourced from the original manufacturer or authorized distributors?
All TLV1812QPWRQ1 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 TLV1812QPWRQ1 meets industry standards.
7.What is the process for return or replacement of TLV1812QPWRQ1?
All TLV1812QPWRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TLV1812QPWRQ1, 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 TLV1812QPWRQ1 part is unused and in its original packaging.
Return procedure for TLV1812QPWRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLV1812QPWRQ1 Tags
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LM2903DR
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LM393DT
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LM239DR
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NCX2200GMAZ
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