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Texas Instruments LM2901QDRDL
- Part No.:
- LM2901QDRDL
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM2901QDRDL.pdf
- Description:
- PROTOTYPE
- Quantity:
- Payment:
- Shipping:
Inventory:1,572
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Product details
Overview
LM2901QDRDL from Texas Instruments is an AEC-Q100 Grade 1 qualified quad open-drain comparator for automotive systems, operating from 2 V to 36 V supply, with ±0.37 mV typical input offset voltage, 3.5 nA typical input bias current, and 1 µs typical propagation delay at 5 V. It serves in HEV/EV powertrain voltage monitoring and body control module threshold detection.
For engineers reviewing the LM2901QDRDL datasheet, LM2901QDRDL pinout, LM2901QDRDL application, or LM2901QDRDL equivalent, this page delivers verified technical context, pin-level design meaning, automotive-grade reliability data, and functional alternatives for safety-critical sensor interface and level-shifting circuits.
Technical Context
The LM2901QDRDL implements four independent PNP Darlington-pair input comparators with open-drain NPN outputs, enabling wired-AND logic and flexible pull-up configuration. Its input stage supports common-mode voltage from ground to VCC − 2 V over temperature, and differential input range extends to ±36 V.
It features dedicated ESD protection on all pins (2 kV HBM), operates across −40°C to +125°C ambient, and maintains stable quiescent current (0.8–1.6 mA total) regardless of supply voltage from 5 V to 36 V - critical for battery-supplied automotive subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 36 V - enables direct connection to 12 V/24 V automotive batteries and compatibility with wide-input power rails |
| Input Offset Voltage (max) | ±5.5 mV over temp - ensures accurate threshold detection in temperature-varying engine bay environments |
| Input Bias Current (typ) | 3.5 nA - minimizes loading on high-impedance sensor sources like thermistors or potentiometers |
| Propagation Delay (typ) | 1 µs at 5 V - supports fast response in overvoltage/undervoltage fault detection loops |
| Output Type | Open-drain NPN - allows level shifting to MCU I/O voltages (e.g., 3.3 V or 5 V) via external pull-up resistor |
| ESD Rating (HBM) | ±2000 V - meets AEC-Q100 Class 2 requirement for robustness in manufacturing and vehicle assembly |
| Operating Temperature | −40°C to +125°C ambient - certified for under-hood and powertrain applications per Grade 1 specification |
Pinout & Package
TSSOP-14 package (4.40 mm × 5.00 mm), surface-mount, lead-free, RoHS-compliant, with exposed thermal pad connected directly to GND for improved thermal performance in high-reliability automotive PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT2) | Comparator 1 output | Open-drain NPN sink - requires external pull-up; drives low when IN2− > IN2+ + VIO |
| 2 (OUT1) | Comparator 2 output | Open-drain NPN sink - independently configurable for multi-threshold detection |
| 3 (VCC) | Positive supply | Accepts 2–36 V; powers all four comparators; decoupling capacitor required near pin |
| 4 (IN2−) | Comparator 1 inverting input | High-impedance PNP Darlington node; common-mode range includes ground |
| 5 (IN2+) | Comparator 1 non-inverting input | Same input structure as IN2−; differential input voltage up to ±36 V tolerated |
| 6 (IN1−) | Comparator 2 inverting input | Electrically identical to IN2−; channel naming follows TI's standard convention |
| 7 (IN1+) | Comparator 2 non-inverting input | Supports rail-to-rail input swing relative to VCC and GND |
| 8 (IN3−) | Comparator 3 inverting input | Enables third independent comparison path without additional ICs |
| 9 (IN3+) | Comparator 3 non-inverting input | Valid for use with reference voltages generated by internal LDOs or external dividers |
| 10 (IN4−) | Comparator 4 inverting input | Allows full quad functionality in compact TSSOP footprint |
| 11 (IN4+) | Comparator 4 non-inverting input | Compatible with single-ended or differential sensor interfaces |
| 12 (GND) | Negative supply / reference | Return path for all comparators; connects to thermal pad for thermal management |
| 13 (OUT4) | Comparator 4 output | Open-drain output; shares no internal connection with other outputs |
| 14 (OUT3) | Comparator 3 output | Independent sinking capability; supports parallel-wired logic or separate signal routing |
Key Features
| Feature | Design Value |
|---|---|
| Quad independent comparators | Reduces board space and BOM count vs. discrete dual or single comparators in multi-sensor systems |
| AEC-Q100 Grade 1 qualification | Validated for automotive ambient operation from −40°C to +125°C - eliminates need for derating in engine control units |
| 2 kV HBM ESD rating | Enhanced pin-level robustness during handling and assembly, reducing field failure risk in production lines |
| Open-drain outputs with TTL/MOS/CMOS compatibility | Enables direct interfacing to diverse logic families and mixed-voltage microcontrollers without level translators |
| Common-mode input range includes ground | Supports direct sensing of signals referenced to chassis ground - essential for battery voltage and current shunt monitoring |
Applications
| HEV/EV Battery Monitoring | Body Control Module (BCM) |
|---|---|
Use Scenario: Detecting cell imbalance or pack overvoltage in 400 V traction battery systems using resistive divider networks. IC Role / Device Role / Timing Role: Quad comparator performs simultaneous high-side and low-side voltage window comparisons with <1 µs response. Use Value: Enables real-time fault flagging to battery management system (BMS) controller before thermal runaway initiates. | Use Scenario: Monitoring door lock actuator current to detect jamming or motor stall in centralized BCM designs. IC Role / Device Role / Timing Role: LM2901QDRDL compares shunt voltage against programmable thresholds to trigger PWM shutdown within 2 µs. Use Value: Prevents coil burnout and improves system MTBF by eliminating reliance on slower microcontroller ADC polling. |
| Infotainment Power Sequencing | Power Train Sensor Interface |
Use Scenario: Validating proper ramp-up sequence of display backlight, audio amplifier, and processor core rails during cold start. IC Role / Device Role / Timing Role: Each comparator monitors a different rail with hysteresis; outputs wire-AND to enable next-stage regulator. Use Value: Ensures deterministic power-up order without firmware dependency - critical for ASIL-B compliance. | Use Scenario: Converting analog camshaft position sensor output into clean digital edges for ECU timing capture. IC Role / Device Role / Timing Role: Comparator conditions noisy sine-wave sensor signal with precise zero-crossing detection and noise immunity. Use Value: Improves ignition timing accuracy by reducing jitter below 100 ns, directly enhancing fuel efficiency and emissions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2901BQDR | Same silicon die, identical electrical specs, SOIC-14 package (3.91 mm × 8.65 mm) | Larger footprint; better thermal dissipation but higher board area cost | Select when legacy layout reuse or manual soldering is prioritized over miniaturization |
| TLV3704QDR | Lower supply current (80 µA/comparator), rail-to-rail inputs, but max supply = 16 V and no AEC-Q100 Grade 1 rating | Not suitable for 24 V commercial vehicle or 48 V mild-hybrid systems | Choose only for non-automotive industrial applications requiring ultra-low power and precision at ≤16 V |
Compared with LM2901BQDR and TLV3704QDR, LM2901QDRDL uniquely combines AEC-Q100 Grade 1 qualification, 36 V operation, and TSSOP-14 miniaturization - making it the only drop-in solution for space-constrained, high-voltage automotive modules requiring functional safety support documentation.
Availability
LM2901QDRDL 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 product lifecycles.
Supply support for LM2901QDRDL 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 for automotive, industrial, and personal electronics markets.
The LM2901x-Q1 product line was designed specifically for automotive voltage monitoring, fault detection, and level-shifting applications where AEC-Q100 qualification, wide supply range, and long-term supply assurance are mandatory.
FAQ
What is the maximum supply voltage supported by LM2901QDRDL?
The LM2901QDRDL supports a maximum supply voltage of 36 V, validated per AEC-Q100 stress testing. This allows direct integration into 24 V commercial vehicle systems and 48 V mild-hybrid architectures without external regulators. Operation above 36 V risks permanent damage, as specified in Absolute Maximum Ratings.
Does LM2901QDRDL require external pull-up resistors on its outputs?
Yes, LM2901QDRDL has open-drain NPN outputs and requires external pull-up resistors to define the logic-high voltage level. Typical values range from 2.2 kΩ to 10 kΩ depending on rise time and bus capacitance. Pull-up to 3.3 V or 5 V is supported, enabling interoperability with mixed-voltage MCUs.
Is LM2901QDRDL pin-compatible with standard LM2901-Q1 variants?
Yes, LM2901QDRDL is pin-compatible with other LM2901x-Q1 devices in TSSOP-14 packages, including LM2901-Q1 and LM2901A-Q1. Pin functions, spacing, and thermal pad layout match TI's standardized TSSOP-14 footprint, allowing direct substitution in existing designs without PCB revision.
What is the input common-mode voltage range of LM2901QDRDL?
The input common-mode voltage range of LM2901QDRDL extends from ground (V−) to VCC − 2.0 V across −40°C to +125°C. This allows direct sensing of signals referenced to chassis ground while maintaining accuracy - critical for battery voltage monitoring and current shunt amplification stages.
How does LM2901QDRDL handle negative input voltages below ground?
LM2901QDRDL tolerates input voltages down to −0.3 V relative to GND. Voltages more negative than −0.3 V may cause incorrect output states and excessive input current flow. For applications requiring extended negative swing, external clamping diodes or level-shifting circuitry must be added.
LM2901QDRDL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 4
- Output Type:
- Open-Collector
- Voltage - Supply, Single/Dual (±):
- 2V ~ 30V, ±1V ~ 15V
- :
- 7mV @ 5V
- Voltage - Input Offset (Max):
- 0.25µA @ 5V
- Current - Input Bias (Max):
- 16mA
- Current - Output (Typ):
- 2.5mA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 125°C (TJ)
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 14-SOIC
LM2901QDRDL FAQ
1.How can I place an order for LM2901QDRDL through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2901QDRDL 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 LM2901QDRDL reliable?
The price and inventory of LM2901QDRDL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2901QDRDL is usually 5 days.
3.What payment methods are accepted for LM2901QDRDL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2901QDRDL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2901QDRDL?
LM2901QDRDL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2901QDRDL 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 LM2901QDRDL?
For technical support, including LM2901QDRDL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2901QDRDL requirements.
6.How does Aetrix verify that LM2901QDRDL is sourced from the original manufacturer or authorized distributors?
All LM2901QDRDL 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 LM2901QDRDL meets industry standards.
7.What is the process for return or replacement of LM2901QDRDL?
All LM2901QDRDL units undergo pre-shipment inspection (PSI). If there is an issue with LM2901QDRDL, 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 LM2901QDRDL part is unused and in its original packaging.
Return procedure for LM2901QDRDL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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