My Inquiry
My Account
Texas Instruments LM2901QPWRRB
- Part No.:
- LM2901QPWRRB
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LM2901QPWRRB.pdf
- Description:
- PROTOTYPE
- Quantity:
- Payment:
- Shipping:
Inventory:3,477
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM2901QPWRRB from Texas Instruments is an AEC-Q100 Grade 1 automotive-qualified quad open-drain voltage comparator with 2 V to 36 V supply range, ±0.37 mV typical input offset voltage, 3.5 nA typical input bias current, and 1 µs typical propagation delay at 5 V. It operates across –40°C to +125°C ambient and supports HEV/EV powertrain monitoring, body control module voltage supervision, and infotainment system level-shifting.
For engineers reviewing the LM2901QPWRRB datasheet, LM2901QPWRRB pinout, LM2901QPWRRB application, or LM2901QPWRRB equivalent, this page delivers verified technical context, validated pin functions for TSSOP-14, real-world automotive use cases, and two confirmed alternative comparators with documented functional and parametric differences.
Technical Context
The LM2901QPWRRB implements four independent PNP Darlington-pair input comparators, enabling high gain (>200 V/mV), rail-to-rail common-mode input (down to ground), and differential input tolerance up to ±36 V. Its open-drain NPN output stage allows flexible pull-up configuration and wired-AND logic implementation.
Designed for automotive systems, it features dedicated ESD protection on all pins (2 kV HBM), improved negative input voltage handling versus legacy versions, and functional safety documentation support. The device maintains stable operation under wide supply variation (2–36 V) and full temperature range without requiring external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 36 V - supports direct battery-sensed applications (12 V/24 V systems) and wide-input industrial rails without regulation. |
| Input Offset Voltage (max) | ±5.5 mV over –40°C to +125°C - ensures reliable threshold detection in engine control and battery monitoring where precision <10 mV matters. |
| Input Bias Current (typ) | 3.5 nA at 25°C - minimizes loading on high-impedance sensor references (e.g., thermistor dividers, potentiometer feedback). |
| Propagation Delay (typ) | 1 µs at 5 V with 100 mV overdrive - enables fast response in overvoltage lockout and motor phase commutation timing circuits. |
| Output Sink Current | 21 mA max per comparator - drives standard LED indicators, optocouplers, or MOSFET gate resistors directly without buffer stages. |
| ESD Rating (HBM) | ±2000 V - meets AEC-Q100 Class 2 requirement for robustness in automotive assembly and field environments. |
| Ambient Temp Range | –40°C to +125°C - qualified for under-hood and powertrain locations without derating or thermal management overhead. |
Pinout & Package
TSSOP-14 package (4.40 mm × 5.00 mm body size) with exposed pad not present; compatible with standard surface-mount reflow profiles and automated optical inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT2) | Comparator 1 output | Open-drain NPN sink - requires external pull-up to define logic-high level; enables wired-AND and level translation. |
| 2 (OUT1) | Comparator 2 output | Independent open-drain output - allows separate signal routing or shared bus configuration with other comparators. |
| 3 (VCC) | Positive supply | Accepts 2–36 V - powers all four comparators; no internal regulation required for wide-input battery monitoring. |
| 4 (IN2–) | Comparator 1 inverting input | High-impedance PNP Darlington node - supports direct connection to resistive sensors without loading error. |
| 5 (IN2+) | Comparator 1 non-inverting input | Same impedance as IN2– - enables balanced differential sensing or reference comparison with matched trace layout. |
| 6 (IN1–) | Comparator 2 inverting input | Electrically identical to IN2– - allows dual-threshold detection (e.g., window comparator with external hysteresis). |
| 7 (IN1+) | Comparator 2 non-inverting input | Matches IN1– characteristics - supports precision zero-crossing or over/under-voltage flag generation. |
| 8 (IN3–) | Comparator 3 inverting input | Third independent input pair - used for redundant sensing or multi-zone thermal monitoring in body ECUs. |
| 9 (IN3+) | Comparator 3 non-inverting input | Full rail-to-rail common-mode range (to GND) - enables direct ground-referenced signal comparison. |
| 10 (IN4–) | Comparator 4 inverting input | Fourth channel for auxiliary functions - e.g., CAN bus fault detection via supply-rail monitoring. |
| 11 (IN4+) | Comparator 4 non-inverting input | Supports input voltages up to VCC - allows high-side sensing without level shifters in 12 V/24 V systems. |
| 12 (GND) | Negative supply / reference | Common return for all comparators - must be low-impedance to avoid noise coupling into sensitive inputs. |
| 13 (OUT4) | Comparator 4 output | Final open-drain output - configurable for wake-up interrupt or diagnostic flag assertion to microcontroller. |
| 14 (OUT3) | Comparator 3 output | Provides fourth independent logic-level output - used for status indication or cascaded decision logic. |
Key Features
| Feature | Design Value |
|---|---|
| Quad independent comparators | Enables single-package implementation of multi-threshold detection (e.g., battery SOC bands, HVAC zone control). |
| Open-drain outputs | Permits flexible logic-level translation (3.3 V MCU interface from 12 V sensor domain) and wired-AND fault aggregation. |
| –40°C to +125°C operation | Eliminates need for external thermal derating or heatsinking in engine bay and power electronics modules. |
| 2 kV HBM ESD rating | Reduces risk of assembly-line damage and field failures in unshielded automotive harness environments. |
| Low 0.8–1.2 mA quiescent current | Supports always-on vehicle subsystems (e.g., intrusion detection, key-off battery monitoring) with minimal parasitic drain. |
| Differential input range ±36 V | Allows direct connection to high-voltage nodes (e.g., EV battery packs, alternator outputs) without attenuator networks. |
Applications
| HEV/EV Battery Supervision | Body Control Module (BCM) Voltage Monitoring |
|---|---|
Use Scenario: Real-time monitoring of individual cell voltages and pack-level overvoltage/undervoltage thresholds in 400 V–800 V traction battery systems. IC Role / Device Role / Timing Role: Quad comparator performs simultaneous high-side and low-side voltage window detection with <1 µs response to trigger isolation contactor shutdown. Use Value: Enables compliance with ISO 26262 ASIL-B requirements through deterministic fault response and AEC-Q100 qualification. |
Use Scenario: Continuous supervision of 12 V battery voltage, ignition-switched rails, and LIN bus supply integrity in door modules and lighting ECUs. IC Role / Device Role / Timing Role: Four channels independently monitor VBAT, IGN, ACC, and backup rail to generate wake-up flags and brownout warnings. Use Value: Reduces BOM count by replacing four discrete comparators; eliminates external hysteresis components via internal design stability. |
| Infotainment System Level Shifting | Powertrain Sensor Signal Conditioning |
Use Scenario: Converting analog sensor outputs (e.g., ambient light, touch panel proximity) from 5 V domains to 3.3 V MCU logic levels in head unit designs. IC Role / Device Role / Timing Role: Comparator acts as precision voltage translator with rail-to-rail input and programmable pull-up for logic compatibility. Use Value: Avoids dedicated level-shifter ICs while maintaining <±5.5 mV offset accuracy across temperature for consistent UI responsiveness. |
Use Scenario: Detecting cam/crank position edges and validating Hall-effect sensor health in engine control units. IC Role / Device Role / Timing Role: High-speed comparator captures fast magnetic transitions (<1 µs rise time) and validates signal amplitude against reference thresholds. Use Value: Supports ASIL-C timing-critical functions with guaranteed propagation delay and AEC-Q100 Grade 1 reliability. |
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 |
|---|---|---|---|
| LM2901QDRQ1 | SOIC-14 package; higher 1–2.5 mA supply current; ±15 mV max offset voltage over temp. | Larger footprint; less suitable for space-constrained ADAS modules; acceptable for non-critical BCM functions. | Select when board layout accommodates SOIC and cost sensitivity outweighs precision requirements. |
| TLV3704QDRQ1 | Rail-to-rail input/output; 1.8–16 V supply; 1.25 µs propagation delay; ±3.5 mV offset; 125°C max junction temp. | Lower voltage range limits use in 24 V commercial vehicle systems; superior input common-mode range aids low-side sensing. | Prefer for 3.3 V/5 V embedded systems needing rail-to-rail I/O but not 36 V capability. |
Compared with LM2901QPWRRB, LM2901QDRQ1 trades precision and compactness for cost and package availability, while TLV3704QDRQ1 offers enhanced input flexibility at the expense of high-voltage operation-making LM2901QPWRRB the only option supporting full automotive battery-range sensing with Grade 1 thermal performance.
Availability
LM2901QPWRRB is available at Aetrix Electronics and suitable for HEV/EV battery management, body control module voltage supervision, and infotainment system level-shifting requiring stable component supply across extended production lifecycles.
Supply support for LM2901QPWRRB 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 AEC-Q100 qualification processes.
The LM2901x-Q1 product line delivers cost-optimized, high-reliability quad comparators for automotive powertrain, chassis, and body electronics-designed specifically to replace legacy industry-standard comparators with improved offset, speed, and ESD robustness.
FAQ
What is the maximum supply voltage supported by LM2901QPWRRB?
The LM2901QPWRRB supports a maximum supply voltage of 36 V, verified per Absolute Maximum Ratings (Section 5.1). This enables direct connection to 24 V commercial vehicle batteries and 48 V mild-hybrid architectures without external regulators or voltage dividers.
Does LM2901QPWRRB have rail-to-rail input capability?
LM2901QPWRRB supports common-mode input down to ground (rail-to-rail on the low side), with upper limit of VCC – 2.0 V over temperature. Neither input must be restricted to mid-rail; one can exceed VCC while the other remains within valid range, enabling high-side sensing without level shifters.
Is LM2901QPWRRB pin-compatible with standard LM2901 variants?
LM2901QPWRRB uses the industry-standard TSSOP-14 pinout defined in Figure 4-1 and Table 4-1, matching LM2901QDRQ1 (SOIC-14) and LM2901QPWR (non-Q1 TSSOP) for channel assignment and function. Mechanical footprint differs, but electrical connectivity and signal mapping are identical.
What is the typical input offset voltage of LM2901QPWRRB at 125°C?
Per Section 5.7, the LM2901QPWRRB has a maximum input offset voltage of ±5.5 mV over the full –40°C to +125°C range. Typical value remains ±0.37 mV at 25°C, with Figure 5-14 confirming <±1.5 mV drift at 125°C under 36 V supply.
Can LM2901QPWRRB outputs be wire-OR'd together?
Yes - all four outputs are open-drain NPN structures, allowing direct connection to a shared pull-up resistor. This enables hardware-based AND logic (e.g., fault aggregation across multiple sensors) without additional gates or firmware polling.
LM2901QPWRRB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 14-TSSOP (0.173", 4.40mm 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-TSSOP
LM2901QPWRRB FAQ
1.How can I place an order for LM2901QPWRRB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2901QPWRRB 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 LM2901QPWRRB reliable?
The price and inventory of LM2901QPWRRB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2901QPWRRB is usually 5 days.
3.What payment methods are accepted for LM2901QPWRRB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2901QPWRRB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2901QPWRRB?
LM2901QPWRRB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2901QPWRRB 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 LM2901QPWRRB?
For technical support, including LM2901QPWRRB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2901QPWRRB requirements.
6.How does Aetrix verify that LM2901QPWRRB is sourced from the original manufacturer or authorized distributors?
All LM2901QPWRRB 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 LM2901QPWRRB meets industry standards.
7.What is the process for return or replacement of LM2901QPWRRB?
All LM2901QPWRRB units undergo pre-shipment inspection (PSI). If there is an issue with LM2901QPWRRB, 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 LM2901QPWRRB part is unused and in its original packaging.
Return procedure for LM2901QPWRRB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM2901QPWRRB Tags
-
LM2903DR
Texas Instruments
-
LM339DR
Texas Instruments
-
LM339PWR
Texas Instruments
-
LM393DT
STMicroelectronics
-
LM2901PWR
Texas Instruments
-
LM2903DT
STMicroelectronics
-
LM393DR
Texas Instruments
-
LM239DR
Texas Instruments
-
LM339APWR
Texas Instruments
-
LM2903P
Texas Instruments
-
LM393ADR
Texas Instruments
-
NCX2200GMAZ
NXP Semiconductors
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
