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Texas Instruments TLV9021QDBVRQ1
- Part No.:
- TLV9021QDBVRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TLV9021QDBVRQ1.pdf
- Description:
- AUTOMOTIVE SINGLE LOW-VOLTAGE CO
- Quantity:
- Payment:
- Shipping:
Inventory:2,570
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Product details
Overview
TLV9021QDBVRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive precision comparator with open-drain output, 300 µV max input offset voltage, 100 ns propagation delay, 16 µA per-channel quiescent current, and rail-to-rail input operation from 1.65 V to 5.5 V supply - deployed in HEV/EV battery monitoring and body control module voltage supervision.
For engineers reviewing the TLV9021QDBVRQ1 datasheet, TLV9021QDBVRQ1 pinout, TLV9021QDBVRQ1 application, or TLV9021QDBVRQ1 equivalent, this page delivers verified technical context, package-specific pin functions, automotive-grade reliability data, and real-world use-value for low-power, fault-tolerant voltage comparison in harsh environments.
Technical Context
The TLV9021QDBVRQ1 implements a high-speed, low-power comparator core with Power-On Reset (POR) ensuring known output state during power ramp-up/down, preventing transients in safety-critical systems. Its fault-tolerant inputs withstand up to 6 V beyond rails without phase inversion or damage.
This single-channel open-drain device supports logic-level translation via external pull-up, operates across –40°C to +125°C ambient, and features 2 kV HBM ESD protection - optimized for automotive voltage monitoring where input overvoltage resilience and startup predictability are mandatory.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.65 V to 5.5 V - enables direct interface with 1.8 V, 3.3 V, and 5 V microcontrollers and sensors without level-shifting. |
| Input Offset Voltage | ±0.3 mV (typ), ≤2 mV (max over –40°C to +125°C) - ensures accurate threshold detection in battery cell voltage and rail monitoring. |
| Propagation Delay | 100 ns (high-to-low, typical at 5 V) - supports fast response in overvoltage/undervoltage lockout (OVLO/UVLO) circuits. |
| Quiescent Current | 16 µA per channel (typ at 25°C) - enables always-on monitoring in low-power automotive subsystems with minimal battery drain. |
| Input Common-Mode Range | (V–) – 0.2 V to (V+) + 0.2 V - allows input signals to exceed supply rails, critical for fault detection in noisy power domains. |
| ESD Protection | 2 kV HBM, CDM Class C6 - meets AEC-Q100 stress requirements for robustness in automotive assembly and field operation. |
| Output Type | Open-drain - permits flexible pull-up to voltages below or above V+, enabling bidirectional logic translation and wired-OR bus configurations. |
Pinout & Package
TLV9021QDBVRQ1 is packaged in a 5-pin SOT-23 (DBV) with 1.60 mm × 2.90 mm body size, lead-free and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT | Open-drain output | Active-low output requiring external pull-up; sinks up to 4 mA at 175 mV drop over temperature. |
| 2 - V– | Negative supply | Ground reference pin; thermal pad (if present) must be connected directly to this pin for WSON variants - not applicable to DBV. |
| 3 - IN– | Inverting input | Accepts input signals up to 6 V beyond V– without damage or output inversion - fault-tolerant design. |
| 4 - IN+ | Non-inverting input | Same fault tolerance as IN–; differential input voltage range supports precise window or threshold comparisons. |
| 5 - V+ | Positive supply | Supplies internal bias and POR circuitry; minimum operating voltage is 1.65 V for guaranteed functionality. |
Key Features
| Feature | Design Value |
|---|---|
| Power-On Reset (POR) | Guarantees defined output state until V+ reaches minimum operating voltage - eliminates spurious wakeups during cold cranking. |
| Fault-Tolerant Inputs | Withstand 6 V input voltage regardless of supply - enables direct connection to unregulated battery rails or CAN transceiver supplies. |
| Rail-to-Rail Input Operation | Operates with common-mode inputs extending 0.2 V beyond both supply rails - simplifies sensor interface without external clamping. |
| Low Quiescent Current | 16 µA per channel at 25°C, ≤35 µA over full temperature range - extends battery life in always-on vehicle modules. |
| AEC-Q100 Grade 1 Qualification | Validated for –40°C to +125°C ambient operation with HBM Class 2 and CDM Class C6 - certified for powertrain and body electronics. |
Applications
| HEV/EV Battery Supervision | Body Control Module (BCM) Voltage Monitoring |
|---|---|
|
Use Scenario: Real-time monitoring of individual Li-ion cell voltages during charging/discharging to prevent overvoltage and thermal runaway. IC Role / Device Role / Timing Role: Precision comparator detecting cell voltage crossing programmable thresholds with <100 ns response. Use Value: ±0.3 mV offset and fault-tolerant inputs enable reliable detection even under load dump or jump-start transients. |
Use Scenario: Supervising 12 V and 5 V rails in BCMs for microcontroller reset generation and LED driver enable/disable control. IC Role / Device Role / Timing Role: Open-drain output drives reset line or MOSFET gate with configurable pull-up voltage. Use Value: 16 µA quiescent current and POR ensure deterministic behavior during ignition cycling and sleep mode. |
| Infotainment System Power Sequencing | Automotive HVAC Fan Speed Control |
|
Use Scenario: Enforcing strict power-up sequence between SoC, display driver, and audio codec by comparing reference voltages. IC Role / Device Role / Timing Role: Single comparator providing enable signal only after all rails stabilize within tolerance. Use Value: Rail-to-rail input range accepts references from multiple LDO outputs; 100 ns delay ensures tight timing margins. |
Use Scenario: Comparing PWM-derived analog fan speed feedback against target voltage to trigger overcurrent shutdown. IC Role / Device Role / Timing Role: Fault-tolerant input accepts noisy tachometer signals; open-drain output interfaces with discrete N-channel MOSFET. Use Value: 6 V input tolerance handles back-EMF spikes; 2 kV ESD rating survives HVAC motor switching noise. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV9021QDRVRQ1 | Same electrical specs; packaged in 5-pin SC-70 (DCK) with smaller 1.25 mm × 2.00 mm footprint. | Better suited for space-constrained PCB layouts where board area is critical. | Select TLV9021QDRVRQ1 when minimizing footprint is prioritized over thermal performance - DCK has higher RθJA (238.5°C/W vs. 223.7°C/W). |
| LM7321QMA/NOPB | Higher quiescent current (1.15 mA), push-pull output, no POR, wider supply range (2.7 V to 36 V), no AEC-Q100 Grade 1 certification. | Applicable in non-safety-critical industrial monitoring but not qualified for automotive powertrain or BCM. | Choose LM7321QMA/NOPB only for cost-sensitive, non-automotive designs requiring high-voltage operation - not a drop-in replacement. |
Compared with TLV9021QDBVRQ1, TLV9021QDRVRQ1 offers identical performance in a smaller package for area-limited designs, while LM7321QMA/NOPB trades automotive qualification and ultra-low power for wider voltage range and higher drive strength - neither is pin-compatible.
Availability
TLV9021QDBVRQ1 is available at Aetrix Electronics and suitable for HEV/EV battery management, body control modules, and infotainment power sequencing requiring stable component supply across extended automotive lifecycles.
Supply support for TLV9021QDBVRQ1 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, embedded processing, and connectivity solutions with deep automotive system expertise.
The TLV902x-Q1 family was designed specifically for precision voltage monitoring in automotive subsystems - emphasizing low power, fault tolerance, and AEC-Q100 compliance for powertrain, body, and infotainment applications.
FAQ
What is the maximum input voltage the TLV9021QDBVRQ1 can tolerate relative to its supply rails?
The TLV9021QDBVRQ1 features fault-tolerant inputs rated for up to 6 V referenced to V–, regardless of supply voltage. This means IN+ and IN– can safely accept signals 6 V above V– - for example, 18 V when V– = 12 V - without damage or output phase inversion, making it ideal for direct battery rail monitoring in automotive systems.
Does the TLV9021QDBVRQ1 include Power-On Reset (POR), and how does it affect system behavior?
Yes, the TLV9021QDBVRQ1 integrates a dedicated Power-On Reset circuit that holds the output in a known state (high-impedance for open-drain) until V+ reaches the minimum operating voltage (1.65 V). This prevents false triggering during cold cranking or brown-out conditions - a critical feature for reliable reset generation and power sequencing in automotive TLV9021QDBVRQ1 deployments.
What is the typical propagation delay of the TLV9021QDBVRQ1, and under what conditions is it measured?
The TLV9021QDBVRQ1 has a typical propagation delay of 100 ns for high-to-low transitions, measured at VS = 5 V, VCM = VS/2, CL = 15 pF, and VID = –100 mV with a 2.5 kΩ pull-up resistor on the open-drain output. This value remains stable across –40°C to +125°C, supporting fast response in overvoltage lockout and fault-detection circuits using TLV9021QDBVRQ1.
Can the TLV9021QDBVRQ1 operate from a 1.8 V supply, and what performance trade-offs occur?
Yes, the TLV9021QDBVRQ1 is fully specified down to 1.65 V supply, including 1.8 V operation. At 1.8 V, input offset voltage remains ≤2 mV over temperature, quiescent current drops to ~17.1 µA, and propagation delay increases slightly versus 5 V - all parameters remain within automotive Grade 1 limits, enabling low-voltage sensor interface in TLV9021QDBVRQ1-based designs.
Is the TLV9021QDBVRQ1 pin-compatible with other devices in the TLV902x-Q1 family?
The TLV9021QDBVRQ1 uses the "North West" 5-pin SOT-23 pinout (IN–, V+, IN+, OUT, V–), which differs from the "South East" pinout of TLV9020-Q1. It is not pin-compatible with TLV9020-Q1 or TLV9031-Q1 (push-pull version), nor with dual/quad variants. Board layout must match the specific TLV9021QDBVRQ1 pin mapping to ensure correct IN+, IN–, and OUT connections.
TLV9021QDBVRQ1 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:
- Open-Drain, Rail-to-Rail
- Voltage - Supply, Single/Dual (±):
- 1.65V ~ 5.5V
- :
- 1.5mV @ 5V
- Voltage - Input Offset (Max):
- 5pA (Typ)
- Current - Input Bias (Max):
- 100mA @ 5V
- Current - Output (Typ):
- 30µA
- Current - Quiescent (Max):
- 70dB CMRR, 95dB PSRR
- CMRR, PSRR (Typ):
- 100ns (Typ)
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 125°C
- Operating Temperature:
- Automotive
- Grade:
- AEC-Q100
- Qualification:
- Surface Mount
- :
- SOT-23-5
TLV9021QDBVRQ1 FAQ
1.How can I place an order for TLV9021QDBVRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV9021QDBVRQ1 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 TLV9021QDBVRQ1 reliable?
The price and inventory of TLV9021QDBVRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV9021QDBVRQ1 is usually 5 days.
3.What payment methods are accepted for TLV9021QDBVRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV9021QDBVRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV9021QDBVRQ1?
TLV9021QDBVRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV9021QDBVRQ1 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 TLV9021QDBVRQ1?
For technical support, including TLV9021QDBVRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV9021QDBVRQ1 requirements.
6.How does Aetrix verify that TLV9021QDBVRQ1 is sourced from the original manufacturer or authorized distributors?
All TLV9021QDBVRQ1 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 TLV9021QDBVRQ1 meets industry standards.
7.What is the process for return or replacement of TLV9021QDBVRQ1?
All TLV9021QDBVRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TLV9021QDBVRQ1, 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 TLV9021QDBVRQ1 part is unused and in its original packaging.
Return procedure for TLV9021QDBVRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLV9021QDBVRQ1 Tags
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