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Texas Instruments LM2901PWRG3
- Part No.:
- LM2901PWRG3
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LM2901PWRG3.pdf
- Description:
- IC COMPARATOR 4 DIFF 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:5,388
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Product details
Overview
LM2901PWRG3 from Texas Instruments is a quad differential comparator IC designed for single-supply operation across 2 V to 36 V, featuring ±0.37 mV typical input offset voltage, 3.5 nA typical input bias current, 1 µs propagation delay, and operation over –40°C to +125°C - used in server PSU overvoltage detection, motor drive fault monitoring, and industrial sensor thresholding.
For engineers reviewing the LM2901PWRG3 datasheet, LM2901PWRG3 pinout, LM2901PWRG3 application, or LM2901PWRG3 equivalent, key selection criteria include guaranteed wide common-mode range (to VCC – 2 V), rail-to-rail input capability, open-collector TTL/MOS/CMOS-compatible outputs, and B-version ESD robustness (2 kV HBM) for harsh industrial environments.
Technical Context
The LM2901PWRG3 implements four independent comparators with internal ESD clamps enabling 2 kV HBM rating, and supports single-supply operation where inputs can swing from ground to within 2 V of VCC. Its open-collector outputs require external pull-up resistors and sink up to 21 mA per channel at 5 V supply.
It uses bipolar input stages delivering low offset drift over temperature and supply voltage, with quiescent current stable at 0.8–1.2 mA (all four comparators) from 5 V to 36 V - independent of output state or load - making it suitable for always-on monitoring circuits in automotive and industrial control systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 36 V - enables direct interface with 3.3 V, 5 V, 12 V, and 24 V industrial rails without level-shifting. |
| Input Offset Voltage (max) | ±5.5 mV over –40°C to +125°C - ensures reliable threshold detection under full automotive/industrial temperature stress. |
| Propagation Delay | 1 µs typical (100 mV step, 5 mV overdrive) - supports fast response in overcurrent and fault-safety circuits. |
| Input Bias Current (typ) | 3.5 nA - minimizes voltage error across high-impedance sensor dividers (e.g., thermistor or RTD interfaces). |
| Output Sink Current | 21 mA per channel at VOL = 1.5 V - drives standard LED indicators, optocouplers, or logic-level MOSFET gates directly. |
| ESD Rating (HBM) | 2000 V - meets IEC 61000-4-2 Level 2 requirements for board-level handling in manufacturing and field service. |
| Common-Mode Input Range | Ground to VCC – 2 V - allows direct sensing of signals referenced to system ground, including battery voltage monitoring. |
Pinout & Package
TSSOP-14 package (5.00 mm × 4.40 mm body size) with exposed thermal pad connected to GND for improved power dissipation in continuous-duty applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT1) | Comparator 1 output | Open-collector output requiring external pull-up; sinks up to 21 mA for driving LEDs or logic inputs. |
| 2 (IN1−) | Comparator 1 inverting input | Accepts voltages from ground to VCC – 2 V; compatible with grounded-referenced sensors. |
| 3 (IN1+) | Comparator 1 non-inverting input | Same voltage range as IN1−; differential pair enables precise threshold comparison. |
| 4 (OUT2) | Comparator 2 output | Independent open-collector output; electrically isolated from OUT1 for multi-channel monitoring. |
| 5 (IN2−) | Comparator 2 inverting input | Supports rail-to-rail common-mode input; no phase inversion relative to IN1−. |
| 6 (IN2+) | Comparator 2 non-inverting input | Enables dual-threshold or window-comparator configurations when paired with IN2−. |
| 7 (VCC) | Positive supply | Single supply input; powers all four comparators; decoupling capacitor required near pin. |
| 8 (IN3−) | Comparator 3 inverting input | Third independent input pair; identical specs to IN1−/IN1+ for scalable analog monitoring. |
| 9 (IN3+) | Comparator 3 non-inverting input | Supports redundant or cascaded comparisons without signal degradation. |
| 10 (IN4−) | Comparator 4 inverting input | Fourth channel enables full-system status aggregation (e.g., temp, voltage, current, fan speed). |
| 11 (IN4+) | Comparator 4 non-inverting input | Allows simultaneous evaluation of four independent analog conditions in one IC. |
| 12 (GND) | Ground reference | Return path for supply and inputs; must be tied to PCB ground plane and thermal pad. |
| 13 (OUT4) | Comparator 4 output | Final open-collector output; routed separately to avoid crosstalk in noise-sensitive designs. |
| 14 (OUT3) | Comparator 3 output | Provides fourth independent alert signal; shares same electrical characteristics as OUT1. |
Key Features
| Feature | Design Value |
|---|---|
| Drop-in B-version upgrade | Replaces legacy LM2901/LM339 with no layout change - same pinout, enhanced specs, and extended temp range. |
| Rail-to-rail input capability | Inputs operate from ground to VCC – 2 V, enabling direct connection to 0 V–referenced sensors without level shifters. |
| Low quiescent current | 1.2 mA max at 36 V - reduces standby power in always-on industrial controllers and battery-backed systems. |
| Robust ESD protection | Dedicated on-die clamps provide 2 kV HBM rating - eliminates need for external TVS diodes in many board-level ESD zones. |
| Wide supply voltage range | 2 V to 36 V operation supports 3.3 V microcontrollers, 5 V logic, and 24 V PLC backplanes in one design. |
Applications
| Overvoltage Protection in Server PSUs | Fault Detection in Motor Drives |
|---|---|
Use Scenario: Monitors DC bus voltage in 48 V server power supplies and triggers shutdown if >52 V. IC Role / Device Role / Timing Role: Quad comparator compares scaled bus voltage against four precision references to detect overvoltage, undervoltage, and transient spikes. Use Value: 1 µs response time enables sub-millisecond fault reaction, meeting IEC 62368-1 safety timing requirements. | Use Scenario: Detects phase current imbalance and short-circuit faults in 3-phase BLDC motor inverters. IC Role / Device Role / Timing Role: Each comparator monitors shunt voltage across one leg; outputs feed FPGA interrupt lines for real-time action. Use Value: ±5.5 mV max offset ensures <±0.5% current threshold accuracy across –40°C to +125°C ambient. |
| Temperature Threshold Monitoring in Building Automation | Vacuum Robot Safety Interlock |
Use Scenario: Reads thermistor network in HVAC duct sensors and asserts alarm at 60°C, 75°C, 90°C, and 105°C thresholds. IC Role / Device Role / Timing Role: Four independent comparators each configured with unique resistor-divider reference, sharing one VCC and GND. Use Value: 3.5 nA input bias current prevents loading errors in high-resistance thermistor strings (>100 kΩ). | Use Scenario: Validates vacuum pressure, motor encoder sync, emergency stop status, and door latch position before robot motion. IC Role / Device Role / Timing Role: One comparator per safety-critical input; all four outputs wired to AND gate for hardware-enforced interlock. Use Value: Guaranteed operation to +125°C supports placement near motors and power electronics without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2901DR | SOIC-14 package; identical electrical specs but larger footprint (8.70 mm × 3.90 mm) and higher RθJA (111.2°C/W). | Suitable for prototyping or space-tolerant designs; not optimal for thermally constrained PCBs. | Select LM2901DR only when SOIC hand-soldering or legacy board compatibility is required. |
| LM2901BQDRQ1 | Automotive AEC-Q100 Grade 1 qualified; same TSSOP-14 package and B-version specs, plus extended reliability testing. | Required for automotive ADAS, infotainment, or body control modules needing qualification evidence. | Choose LM2901BQDRQ1 for automotive production programs; LM2901PWRG3 is for industrial/commercial use. |
Compared with LM2901DR and LM2901BQDRQ1, the LM2901PWRG3 delivers identical performance in a thermally optimized TSSOP-14 package, offering lower RθJA (136.6°C/W) than SOIC and avoiding automotive qualification overhead where unnecessary - ideal for cost-sensitive, high-volume industrial equipment.
Availability
LM2901PWRG3 is available at Aetrix Electronics and suitable for server PSU monitoring, motor drive fault detection, and building automation temperature thresholding requiring stable component supply across multi-year production cycles.
Supply support for LM2901PWRG3 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 decades of experience in precision analog ICs and industrial-grade components.
The LM2901B family - including LM2901PWRG3 - was engineered for high-reliability industrial monitoring, delivering improved offset, speed, and ruggedness over legacy LM2901 while maintaining full pin and functional compatibility.
FAQ
What is the maximum supply voltage rating for LM2901PWRG3?
The LM2901PWRG3 has an absolute maximum supply voltage of 38 V, with recommended operating range from 2 V to 36 V. This allows direct use with 24 V industrial rails and 36 V battery systems without external regulation, while maintaining guaranteed performance across the full range.
Does LM2901PWRG3 support rail-to-rail input operation?
Yes, the LM2901PWRG3 supports common-mode input voltages from ground to VCC – 2 V. Either input can extend to VCC without damage, and proper output state is maintained as long as at least one input remains within the valid common-mode range - enabling true rail-to-rail sensing in single-supply systems.
What is the output configuration of LM2901PWRG3 and how should it be interfaced?
The LM2901PWRG3 features open-collector outputs requiring external pull-up resistors. Each output sinks up to 21 mA at VOL = 1.5 V. Pull-up values are selected based on speed and power trade-offs: 10 kΩ for low-power status indication, 1 kΩ for faster rise times in digital interface applications.
How does LM2901PWRG3 differ from the original LM2901 in terms of performance?
The LM2901PWRG3 is the B-version upgrade: it improves input offset voltage (±0.37 mV typ vs. ±15 mV typ), reduces input bias current (3.5 nA vs. 25 nA), cuts propagation delay (1 µs vs. 1.3 µs), increases ESD rating (2 kV HBM), and extends temperature range to +125°C - all while maintaining pin compatibility with the legacy LM2901.
Is LM2901PWRG3 suitable for automotive applications?
The LM2901PWRG3 is qualified for industrial temperature range (–40°C to +125°C) but is not AEC-Q100 certified. For automotive use, TI offers the pin-compatible LM2901BQDRQ1 variant, which adds automotive qualification, enhanced reliability testing, and PPAP documentation support - LM2901PWRG3 is intended for commercial and industrial systems.
LM2901PWRG3 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
- Voltage - Supply, Single/Dual (±):
- 2V ~ 30V, ±1V ~ 15V
- :
- 7mV @ 30V
- Voltage - Input Offset (Max):
- 0.25µA @ 5V
- Current - Input Bias (Max):
- 20mA
- Current - Output (Typ):
- 2.5mA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 125°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 14-TSSOP
LM2901PWRG3 FAQ
1.How can I place an order for LM2901PWRG3 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2901PWRG3 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 LM2901PWRG3 reliable?
The price and inventory of LM2901PWRG3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2901PWRG3 is usually 5 days.
3.What payment methods are accepted for LM2901PWRG3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2901PWRG3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2901PWRG3?
LM2901PWRG3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2901PWRG3 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 LM2901PWRG3?
For technical support, including LM2901PWRG3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2901PWRG3 requirements.
6.How does Aetrix verify that LM2901PWRG3 is sourced from the original manufacturer or authorized distributors?
All LM2901PWRG3 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 LM2901PWRG3 meets industry standards.
7.What is the process for return or replacement of LM2901PWRG3?
All LM2901PWRG3 units undergo pre-shipment inspection (PSI). If there is an issue with LM2901PWRG3, 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 LM2901PWRG3 part is unused and in its original packaging.
Return procedure for LM2901PWRG3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM2901PWRG3 Tags
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LM2903DR
Texas Instruments
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LM339DR
Texas Instruments
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LM339PWR
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LM393DT
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LM2901PWR
Texas Instruments
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LM2903DT
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LM393DR
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LM239DR
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LM339APWR
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LM2903P
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LM393ADR
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NCX2200GMAZ
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