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Texas Instruments LP2901IDRQ1
- Part No.:
- LP2901IDRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LP2901IDRQ1.pdf
- Description:
- IC COMPARATOR 4 GEN PUR 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:8,719
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Product details
Overview
LP2901IDRQ1 from Texas Instruments is a low-power quad differential comparator qualified for automotive applications, operating from 3 V to 30 V single supply, drawing only 60 µA typical supply current, with ±2 mV input offset voltage and 3 nA input bias current. It interfaces directly with CMOS logic and drives loads up to 30 mA at VO = 2 V in Darlington mode.
For engineers reviewing the LP2901IDRQ1 datasheet, LP2901IDRQ1 pinout, LP2901IDRQ1 application, or LP2901IDRQ1 equivalent, key selection considerations include ultra-low quiescent current for battery-powered systems, rail-to-rail common-mode input range including ground, bimodal output sink capability (700 µA at 0.4 V / 30 mA at 2 V), and AEC-Q100 qualification for automotive use.
Technical Context
The LP2901IDRQ1 integrates four independent comparators with p-n-p input stages enabling ultra-low input bias current (3 nA) and common-mode input range extending to ground. Its output stage uses a dual-mode Darlington/ground-emitter configuration to deliver high sink current (30 mA) at higher output voltages while maintaining 700 µA capability near ground - critical for driving LEDs, relays, or logic gates without external buffers.
It supports single-supply operation across 3 V–30 V with reverse-voltage protection on VCC, and features input overvoltage tolerance up to ±36 V differential. The device is characterized from –40°C to +85°C and meets AEC-Q100 Grade 2 requirements for automotive electronics reliability and thermal stability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3 V to 30 V single supply - enables direct integration into 5 V, 12 V, and 24 V automotive power domains without level-shifting. |
| Quiescent Current | 60 µA typical - allows continuous operation in always-on vehicle subsystems (e.g., door latch monitoring, battery management) with negligible battery drain. |
| Input Offset Voltage | ±2 mV max at 25°C - ensures accurate threshold detection in precision window comparators or battery voltage monitors. |
| Input Bias Current | 3 nA max - minimizes loading error on high-impedance sensor inputs (e.g., thermistors, photodiodes). |
| Output Sink Current | 30 mA at VO = 2 V - directly drives LEDs, small solenoids, or TTL/CMOS inputs without external transistor stages. |
| Common-Mode Input Range | 0 V to VCC − 2 V - supports ground-referenced sensing (e.g., current shunt monitoring) without input translation circuitry. |
| Operating Temperature | –40°C to +85°C - validated for under-hood and cabin-mounted automotive ECUs per AEC-Q100 Grade 2. |
Pinout & Package
LP2901IDRQ1 is housed in a 14-pin SOIC (D package), 3.9 mm width, 1.75 mm max height, with standard JEDEC MS-012AB footprint. Pin 1 marked by notch or beveled corner; pin numbering follows counterclockwise convention from top-left.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT, 2OUT, 3OUT, 4OUT | Open-collector output | Uncommitted collector outputs - require external pull-up to any compatible voltage (≤36 V); support wired-AND logic and mixed-voltage interfacing. |
| 1IN+, 1IN−, 2IN+, 2IN−, 3IN+, 3IN−, 4IN+, 4IN− | Differential input pairs | Four independent comparator inputs - p-n-p input stage enables ground-sensing capability and low bias current. |
| VCC | Positive supply | Single power rail input - reverse-voltage protected; accepts 3 V–30 V with no polarity-sensitive external diode required. |
| GND | Ground reference | Common return path for all comparators and internal bias network - establishes stable reference for single-supply operation. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Qualified | Grade 2 (–40°C to +105°C ambient, tested to +85°C junction) - certified for automotive safety-critical and infotainment subsystems. |
| Bimodal Output Stage | Darlington mode (30 mA @ 2 V) + ground-emitter mode (700 µA @ 0.4 V) - eliminates need for external driver transistors in mixed-load applications. |
| Input Overvoltage Tolerance | ±36 V differential input rating - withstands load-dump transients and ESD events without clamping diodes or external protection. |
| CMOS/TTL-Compatible Output | Output sinks current into any logic family's input - simplifies interface to microcontrollers, FPGAs, and discrete logic without level translators. |
| Ultra-Low Power Operation | 60 µA ICC independent of supply voltage - enables multi-comparator designs in energy-constrained modules (e.g., tire pressure sensors, smart switches). |
Applications
| Automotive Door Module | Battery Management System |
|---|---|
Use Scenario: Monitoring door latch position, window anti-pinch status, and mirror fold/unfold signals using resistive divider thresholds. IC Role / Device Role / Timing Role: Quad comparator provides independent voltage window detection for four mechanical sensors - each channel compares sensor output against upper/lower reference rails. Use Value: Single LP2901IDRQ1 replaces four discrete comparators, reducing BOM count and PCB area while maintaining AEC-Q100 compliance and <60 µA total system standby current. | Use Scenario: Detecting overvoltage, undervoltage, and cell imbalance in 12 V lead-acid or 4S Li-ion battery packs used in start-stop systems. IC Role / Device Role / Timing Role: Configured as precision window comparator and threshold detector - one channel monitors pack voltage, others monitor individual cell voltages via resistor dividers. Use Value: ±2 mV offset and 3 nA bias current ensure accurate 10 mV-level fault detection without calibration drift over temperature and lifetime. |
| Industrial PLC Input Module | Smart Lighting Control |
Use Scenario: Converting 0–10 V analog sensor signals (temperature, pressure) into digital ON/OFF states for programmable logic controller inputs. IC Role / Device Role / Timing Role: Comparator acts as analog-to-digital front-end - each channel digitizes one sensor channel with hysteresis added externally via feedback resistors. Use Value: 30 mA sink capability directly drives PLC optocoupler inputs without buffer transistors, improving noise immunity and reducing component count. | Use Scenario: Adaptive streetlight dimming based on ambient light (LDR), motion (PIR), and time-of-day (RTC) inputs in municipal LED lighting nodes. IC Role / Device Role / Timing Role: Quad comparator implements multi-input decision logic - e.g., AND of dusk detection and motion presence, OR of scheduled on-time and manual override. Use Value: Ultra-low 60 µA quiescent current extends solar-charged battery life in off-grid installations while supporting fast response (<1.3 µs) to motion triggers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2901DR | Non-automotive grade; same pinout and electrical specs but not AEC-Q100 qualified; wider temp range (–40°C to +125°C). | Suitable for industrial or consumer applications where automotive qualification is unnecessary. | Select LM2901DR for cost-sensitive non-automotive designs requiring identical functionality without qualification overhead. |
| TLV3704IPW | Rail-to-rail input/output; lower supply current (35 µA); smaller 14-pin TSSOP package; not AEC-Q100 qualified. | Better suited for space-constrained, low-voltage (1.8–5.5 V) portable devices - lacks 30 V tolerance and automotive validation. | Choose TLV3704IPW when operating below 5.5 V and board space is limited, but avoid in 12/24 V automotive environments. |
Compared with LM2901DR and TLV3704IPW, the LP2901IDRQ1 uniquely combines AEC-Q100 Grade 2 qualification, 30 V supply tolerance, and 30 mA output drive in a standard SOIC-14 - making it the only option among the three validated for under-hood automotive use with high-side switching and transient resilience.
Availability
LP2901IDRQ1 is available at Aetrix Electronics and suitable for automotive body control modules, battery management systems, and industrial PLC input conditioning requiring stable component supply, long-term lifecycle assurance, and AEC-Q100 compliance.
Supply support for LP2901IDRQ1 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, embedded processing, and automotive-grade ICs, with decades of experience in high-reliability power management and signal conditioning solutions.
The LP2901-Q1 belongs to TI's automotive-qualified analog comparators product line, designed specifically for robust, low-power voltage threshold detection in harsh-temperature and high-transient automotive environments.
FAQ
What is the maximum supply voltage for LP2901IDRQ1?
The LP2901IDRQ1 supports a maximum supply voltage of 36 V, as specified in its Absolute Maximum Ratings. However, its recommended operating range is 3 V to 30 V. This 36 V rating provides margin against automotive load-dump transients and ensures safe operation during voltage spikes without external protection circuitry.
Does LP2901IDRQ1 support rail-to-rail input operation?
The LP2901IDRQ1 does not support full rail-to-rail input - its common-mode input voltage range extends from 0 V (ground) to VCC − 2 V. This allows ground-referenced sensing but excludes the top 2 V of the supply rail. For true rail-to-rail input, consider alternatives like TLV3704IPW, though it lacks AEC-Q100 qualification and 30 V tolerance.
Can unused comparators in LP2901IDRQ1 be left floating?
No - all pins of unused comparators in LP2901IDRQ1 must be grounded, as explicitly stated in the Application Information section. Leaving inputs floating risks unpredictable output states and increased supply current due to internal bias network instability. Grounding both inputs and the output ensures minimal power consumption and prevents oscillation or false triggering.
Is LP2901IDRQ1 pin-compatible with LM339?
Yes, LP2901IDRQ1 is pin-for-pin compatible with LM339, LM239, and LM2901, as confirmed in the device description. All share identical SOIC-14 pinout, terminal functions, and output configuration (open-collector). This allows drop-in replacement in legacy designs - provided the AEC-Q100 qualification and tighter offset voltage (±2 mV vs. ±5 mV for LM339) meet system requirements.
What is the output configuration of LP2901IDRQ1 and how should it be used?
LP2901IDRQ1 features open-collector outputs requiring external pull-up resistors. Each output can sink up to 30 mA at VO = 2 V and remains compatible with CMOS, TTL, and microcontroller GPIO inputs. Pull-up voltage may differ from VCC (e.g., 3.3 V logic pulled up to 5 V), enabling flexible voltage-domain interfacing without level shifters.
LP2901IDRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 4
- Output Type:
- CMOS, MOS, Open-Collector
- Voltage - Supply, Single/Dual (±):
- 3V ~ 30V
- :
- 5mV @ 30V
- Voltage - Input Offset (Max):
- 0.025µA @ 5V
- Current - Input Bias (Max):
- 30mA @ 5V
- Current - Output (Typ):
- 100µA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- Automotive
- Grade:
- AEC-Q100
- Qualification:
- Surface Mount
- :
- 14-SOIC
LP2901IDRQ1 FAQ
1.How can I place an order for LP2901IDRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LP2901IDRQ1 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 LP2901IDRQ1 reliable?
The price and inventory of LP2901IDRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP2901IDRQ1 is usually 5 days.
3.What payment methods are accepted for LP2901IDRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP2901IDRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP2901IDRQ1?
LP2901IDRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP2901IDRQ1 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 LP2901IDRQ1?
For technical support, including LP2901IDRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP2901IDRQ1 requirements.
6.How does Aetrix verify that LP2901IDRQ1 is sourced from the original manufacturer or authorized distributors?
All LP2901IDRQ1 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 LP2901IDRQ1 meets industry standards.
7.What is the process for return or replacement of LP2901IDRQ1?
All LP2901IDRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LP2901IDRQ1, 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 LP2901IDRQ1 part is unused and in its original packaging.
Return procedure for LP2901IDRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LP2901IDRQ1 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
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