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Texas Instruments LM2901BQPWRQ1
- Part No.:
- LM2901BQPWRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LM2901BQPWRQ1.pdf
- Description:
- AUTOMOTIVE, QUAD DIFFERENTIAL CO
- Quantity:
- Payment:
- Shipping:
Inventory:1,609
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Product details
Overview
LM2901BQPWRQ1 from Texas Instruments is an AEC-Q100 Grade 1 qualified quad open-drain automotive comparator 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 as a precision voltage comparison engine in HEV/EV powertrain monitoring and body control modules.
For engineers reviewing the LM2901BQPWRQ1 datasheet, LM2901BQPWRQ1 pinout, LM2901BQPWRQ1 application, or LM2901BQPWRQ1 equivalent, this page delivers verified technical context, package-specific pin functions, automotive-grade reliability data, and functional alternatives for safety-critical design validation.
Technical Context
The LM2901BQPWRQ1 implements four independent PNP Darlington-pair input comparators, enabling high-gain, low-input-bias operation with common-mode range extending from ground to VCC – 2.0 V across –40°C to +125°C. Its open-drain NPN output stage supports wired-AND logic and flexible level-shifting via external pull-up.
It features dedicated ESD protection on all pins (2 kV HBM), improved negative input voltage tolerance versus legacy versions, and operates with single or dual supplies-provided VCC exceeds input common-mode voltage by ≥1.5 V and supply differential stays within 2 V to 36 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 36 V - supports direct battery-sensing in 12 V/24 V/48 V automotive systems without level-shifting circuitry |
| Input Offset Voltage (typ) | ±0.37 mV - enables accurate threshold detection in low-voltage sensor interfaces (e.g., coolant temp, brake fluid level) |
| Input Bias Current (typ) | 3.5 nA - minimizes loading error on high-impedance voltage dividers used in battery monitoring circuits |
| Propagation Delay (typ) | 1 µs at 5 V - sufficient for real-time overvoltage/undervoltage fault response in powertrain control units |
| ESD Rating (HBM) | ±2000 V - meets AEC-Q100 Class 2 requirement for robustness in assembly and field environments |
| Operating Temperature | –40°C to +125°C ambient - validated for under-hood and cabin-mounted automotive ECUs per Grade 1 |
| Output Type | Open-drain - allows interface to mixed-voltage logic (e.g., 3.3 V MCU I/O) using external pull-up resistor |
Pinout & Package
TSSOP-14 package (4.40 mm × 5.00 mm), lead pitch 0.65 mm, exposed pad not present. Pin numbering follows JEDEC MS-012 standard with top-side marking orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (2IN–) | Negative input of Comparator 2 | Accepts signal below reference; common-mode range includes ground for direct sensor grounding |
| 2 (2IN+) | Positive input of Comparator 2 | Accepts reference or monitored signal; supports rail-to-rail input up to VCC – 2.0 V |
| 3 (1IN–) | Negative input of Comparator 1 | Dedicated channel for primary fault detection (e.g., battery disconnect sensing) |
| 4 (1IN+) | Positive input of Comparator 1 | Configurable as threshold reference or secondary sensor input |
| 5 (VCC) | Positive supply | Must exceed common-mode voltage by ≥1.5 V; supports 36 V max for 48 V system compatibility |
| 6 (2OUT) | Open-drain output of Comparator 2 | Sinks current when 2IN– > 2IN+ + VIO; requires external pull-up for logic-high state |
| 7 (1OUT) | Open-drain output of Comparator 1 | Wired-AND capable - multiple outputs can share one pull-up for fault-bus signaling |
| 8 (4IN–) | Negative input of Comparator 4 | Used for redundant or auxiliary monitoring (e.g., HVAC blower overcurrent) |
| 9 (3IN+) | Positive input of Comparator 3 | Supports differential or single-ended configuration depending on PCB routing |
| 10 (3IN–) | Negative input of Comparator 3 | Enables window-comparator topology when paired with Comparator 4 |
| 11 (GND) | Ground reference | Return path for all comparators and internal bias; must be low-impedance for noise immunity |
| 12 (4OUT) | Open-drain output of Comparator 4 | Provides fourth independent fault flag; compatible with 1.8 V–5 V logic families |
| 13 (3OUT) | Open-drain output of Comparator 3 | Supports daisy-chained diagnostics via shared pull-up and RC filter for glitch rejection |
| 14 (4IN+) | Positive input of Comparator 4 | Completes quad-channel set for multi-threshold applications like battery cell balancing supervision |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for continuous operation from –40°C to +125°C ambient in automotive powertrain and body systems |
| 2 kV HBM ESD protection (B version) | Enhanced manufacturing yield and field reliability in unshielded harness environments |
| Low 0.8 mA total quiescent current (at 5 V) | Reduces standby power draw in always-on modules such as telematics gateways |
| Common-mode input range includes ground | Eliminates need for level-shifting op-amps when interfacing with grounded sensors (e.g., thermistors) |
| Differential input voltage range ±36 V | Withstands load-dump transients without latch-up or damage in 24 V commercial vehicle systems |
| Open-drain outputs with TTL/MOS/CMOS compatibility | Enables direct connection to microcontroller GPIOs and programmable logic without interface buffers |
Applications
| HEV/EV Battery Management | Automotive Body Control Module |
|---|---|
|
Use Scenario: Monitoring individual cell voltages against upper/lower thresholds in 400 V traction battery packs. IC Role / Device Role / Timing Role: Quad comparator performing simultaneous overvoltage, undervoltage, thermal fault, and isolation monitor comparisons. Use Value: Enables fast (<1 µs) fault flag generation for immediate contactor disengagement, meeting ASIL-B diagnostic coverage requirements. |
Use Scenario: Detecting door-open, hood-open, and trunk-open states using grounded mechanical switches. IC Role / Device Role / Timing Role: Four independent comparators acting as digital input conditioners with hysteresis-capable inputs. Use Value: Eliminates external Schmitt triggers and reduces BOM count while supporting direct 12 V switch sensing without voltage dividers. |
| Infotainment System Power Sequencing | Engine Control Unit Sensor Supervision |
|
Use Scenario: Validating proper ramp-up sequence of 5 V, 3.3 V, and 1.8 V rails before enabling display controller and audio codec. IC Role / Device Role / Timing Role: Comparator array generating synchronized enable signals based on precise voltage thresholds. Use Value: Ensures deterministic power-up order to prevent latch-up in multi-rail SoCs, reducing field return rates. |
Use Scenario: Supervising oxygen sensor heater supply, MAP sensor output, crankshaft position signal integrity, and knock sensor bias. IC Role / Device Role / Timing Role: Fault-detection front-end converting analog anomalies into discrete logic-level alerts for MCU interrupt handling. Use Value: Provides hardware-level fail-safe response independent of software execution, improving ISO 26262 ASIL-C readiness. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2901QPWRQ1 | Higher ±15 mV max offset voltage, 25 nA typical input bias current, 1.3 µs typical propagation delay | Limited to non-safety-critical body electronics where tighter offset isn't required | Select when cost sensitivity outweighs precision timing or low-offset needs in cabin modules |
| TL331QDBVRQ1 | Single-channel, SOT-23-5, ±1.5 mV max offset, 1.2 µs propagation delay, 36 V supply | Requires four devices to match LM2901BQPWRQ1 channel count; higher board area and assembly cost | Choose for space-constrained designs needing only one comparator channel with identical automotive qualification |
Compared with LM2901QPWRQ1, LM2901BQPWRQ1 delivers 4× lower offset drift and 23% faster response-critical for battery fault detection. Versus TL331QDBVRQ1, it integrates four channels in one TSSOP-14 footprint, cutting PCB area by ~60% and reducing test points and solder joints in production.
Availability
LM2901BQPWRQ1 is available at Aetrix Electronics and suitable for HEV/EV battery management, automotive body control modules, and infotainment power sequencing requiring stable component supply across extended temperature and long product lifecycles.
Supply support for LM2901BQPWRQ1 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 deep expertise in automotive-grade IC design and AEC-Q100 qualification infrastructure.
The LM2901B-Q1 product line was developed specifically for automotive voltage monitoring and fault-detection applications, emphasizing wide supply range, low offset, and robust ESD performance in harsh environments.
FAQ
What is the maximum supply voltage rating for LM2901BQPWRQ1?
The LM2901BQPWRQ1 supports a maximum supply voltage of 36 V, verified per absolute maximum ratings in the TI datasheet SLCS142H. This allows direct integration into 24 V commercial vehicle systems and 48 V mild-hybrid architectures without external regulation. Operation above 36 V risks permanent damage to the internal ESD structures and input transistors.
Does LM2901BQPWRQ1 support dual-supply operation?
Yes, LM2901BQPWRQ1 supports dual-supply operation provided the difference between V+ and V– remains within 2 V to 36 V, and V+ is at least 1.5 V more positive than the input common-mode voltage. This enables use in split-rail sensor signal conditioning where ground-referenced inputs coexist with negative supply domains.
What is the purpose of the NC pins on LM2901BQPWRQ1 in TSSOP-14?
The LM2901BQPWRQ1 in TSSOP-14 has no NC (no-connect) pins - all 14 pins are functionally assigned per Table 4-1 of SLCS142H. The NC designation appears only in WQFN-16 and X2QFN-14 variants. For TSSOP-14, pins 1–14 correspond directly to comparator inputs, outputs, VCC, and GND with no unused terminals.
Can LM2901BQPWRQ1 drive a 5 V logic input directly?
Yes, LM2901BQPWRQ1 can drive a 5 V logic input directly using an external 5 V pull-up resistor on any output pin. Its open-drain NPN output sinks current when active and presents high impedance when inactive, allowing clean interfacing with 5 V CMOS or TTL inputs without level-shifting components.
Is LM2901BQPWRQ1 pin-compatible with LM2901QPWRQ1?
Yes, LM2901BQPWRQ1 is pin-compatible with LM2901QPWRQ1 in the same TSSOP-14 package - both share identical pinout, footprint, and thermal pad absence. This enables drop-in replacement for upgraded offset, speed, and ESD performance without PCB redesign.
LM2901BQPWRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 4
- Output Type:
- Open-Collector, CMOS, MOS, TTL
- Voltage - Supply, Single/Dual (±):
- 2V ~ 30V, ±1V ~ 15V
- :
- 3.5mV @ 5V
- Voltage - Input Offset (Max):
- 0.025µA @ 5V
- Current - Input Bias (Max):
- 21mA @ 5V
- Current - Output (Typ):
- 1.2mA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- 1µs (Typ)
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 125°C
- Operating Temperature:
- Automotive
- Grade:
- AEC-Q100
- Qualification:
- Surface Mount
- :
- 14-TSSOP
LM2901BQPWRQ1 FAQ
1.How can I place an order for LM2901BQPWRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2901BQPWRQ1 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 LM2901BQPWRQ1 reliable?
The price and inventory of LM2901BQPWRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2901BQPWRQ1 is usually 5 days.
3.What payment methods are accepted for LM2901BQPWRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2901BQPWRQ1 transactions.
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4.How is shipping managed for LM2901BQPWRQ1?
LM2901BQPWRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2901BQPWRQ1 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 LM2901BQPWRQ1?
For technical support, including LM2901BQPWRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2901BQPWRQ1 requirements.
6.How does Aetrix verify that LM2901BQPWRQ1 is sourced from the original manufacturer or authorized distributors?
All LM2901BQPWRQ1 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 LM2901BQPWRQ1 meets industry standards.
7.What is the process for return or replacement of LM2901BQPWRQ1?
All LM2901BQPWRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LM2901BQPWRQ1, 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 LM2901BQPWRQ1 part is unused and in its original packaging.
Return procedure for LM2901BQPWRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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