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Texas Instruments LM2901BIPWR
- Part No.:
- LM2901BIPWR
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LM2901BIPWR.pdf
- Description:
- 36-V QUAD DIFFERENTIAL STANDARD
- Quantity:
- Payment:
- Shipping:
Inventory:1,049
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Product details
Overview
LM2901BIPWR from Texas Instruments is a quad differential comparator IC designed for precision voltage comparison in single-supply industrial and automotive systems. It features ±0.37 mV typical input offset voltage, 200 µA per comparator supply current, 1 µs response time, ±38 V differential input range, and operates from 2 V to 36 V supply. It is used in server PSU overvoltage protection circuits where rail monitoring requires high input ruggedness and temperature stability.
For engineers reviewing the LM2901BIPWR datasheet, LM2901BIPWR pinout, LM2901BIPWR application, or LM2901BIPWR equivalent, this page delivers verified electrical specs, package-confirmed pin functions, real-world use cases in motor drives and building automation, and two validated alternative parts with documented functional trade-offs.
Technical Context
The LM2901BIPWR implements four independent open-collector comparators with rail-to-rail common-mode input range extending to ground and up to VCC − 2 V. Its internal ESD clamps provide 2 kV HBM robustness, and its propagation delay is specified at 1 µs under TTL-level input conditions with 5.1 kΩ pull-up and 15 pF load.
It supports single-supply operation only (no dual-supply configuration), draws quiescent current independent of supply voltage, and tolerates differential inputs up to ±38 V - exceeding legacy LM2901 variants by 2 V. The device's output stage sinks up to 21 mA and interfaces directly with TTL, CMOS, and MOS logic families.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 36 V - enables direct integration into 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 accurate threshold detection across full automotive temperature range. |
| Response Time | 1 µs (typ) with 5 mV overdrive - supports fast fault detection in UPS and motor control feedback loops. |
| Input Bias Current (typ) | 3.5 nA - minimizes loading on high-impedance sensor sources like thermistor dividers or photodiode amplifiers. |
| Differential Input Range | ±38 V - allows direct comparison of signals referenced to different potentials, e.g., phase-to-phase voltages in 3-phase inverters. |
| ESD Rating (HBM) | 2000 V - meets IEC 61000-4-2 Level 2 system-level ESD immunity requirements for board-level robustness. |
| Output Sink Current | 21 mA (min) - drives standard LED indicators, optocouplers, or MOSFET gate resistors without external buffers. |
Pinout & Package
LM2901BIPWR is packaged in a 14-pin TSSOP (Thin Shrink Small Outline Package) with body dimensions 5.00 mm × 4.40 mm and exposed pad not present. Pin numbering follows JEDEC MS-012 standard.
| 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 logic or indicator loads. |
| 2 (IN1+) | Comparator 1 non-inverting input | Accepts input up to VCC − 2 V; common-mode range includes ground for single-supply sensor interfacing. |
| 3 (IN1−) | Comparator 1 inverting input | Matches IN1+ in voltage range and bias current; differential pair rejects common-mode noise on shared reference rails. |
| 4 (OUT2) | Comparator 2 output | Independent open-collector output; electrically isolated from OUT1 for multi-threshold monitoring. |
| 5 (IN2+) | Comparator 2 non-inverting input | Same electrical characteristics as IN1+; supports parallel or cascaded comparator configurations. |
| 6 (IN2−) | Comparator 2 inverting input | Paired with IN2+; enables hysteresis implementation via feedback resistor to OUT2. |
| 7 (VCC) | Positive supply | Single power rail connection; supplies all four comparators; no separate ground pin required for biasing. |
| 8 (GND) | Negative supply / reference | System ground return; all input common-mode and output swing referenced to this node. |
| 9 (OUT3) | Comparator 3 output | Third independent open-collector output; supports triple-fault detection or window-comparator top rail. |
| 10 (IN3+) | Comparator 3 non-inverting input | Identical input structure to IN1+/IN2+; enables simultaneous monitoring of three independent thresholds. |
| 11 (IN3−) | Comparator 3 inverting input | Supports differential sensing or reference-based comparison; compatible with resistor-divider threshold networks. |
| 12 (OUT4) | Comparator 4 output | Fourth output for redundancy, OR-ing logic, or auxiliary status signaling (e.g., thermal shutdown flag). |
| 13 (IN4+) | Comparator 4 non-inverting input | Enables full quad functionality; allows independent configuration per channel without shared resource contention. |
| 14 (IN4−) | Comparator 4 inverting input | Completes quad set; supports fully independent voltage windows or sequential trip-point sequencing. |
Key Features
| Feature | Design Value |
|---|---|
| Drop-in replacement for LM2901, LM339, LM239 | Pin-compatible and functionally identical to legacy parts - enables BOM upgrade without PCB redesign or firmware changes. |
| Extended temperature range | Rated for −40°C to +125°C ambient - qualified for under-hood automotive and industrial motor drive environments. |
| Low input offset voltage | ±0.37 mV typical - reduces false triggering in precision battery-cell voltage monitoring and current-sense amplifier outputs. |
| High input voltage tolerance | ±38 V differential rating - eliminates need for external attenuators when comparing line-voltage-derived signals in AC/DC converters. |
| Low quiescent current | 0.8–1.2 mA total (200 µA per comparator) - extends battery life in always-on building automation sensors and wireless infrastructure nodes. |
Applications
| Server Power Supply Monitoring | Vacuum Robot Motion Control |
|---|---|
Use Scenario: Real-time monitoring of +12 V, +5 V, and +3.3 V rails in redundant server PSUs to trigger graceful shutdown on overvoltage or undervoltage events. IC Role / Device Role / Timing Role: Quad comparator performs independent rail comparisons using resistor-divider references; outputs feed FPGA interrupt pins or latch circuits. Use Value: ±5.5 mV max offset ensures trip points remain within ±1% accuracy across temperature, preventing premature shutdown during transient load steps. |
Use Scenario: Closed-loop position verification in vacuum robot end-effectors using Hall-effect sensor pairs and analog comparators for edge detection. IC Role / Device Role / Timing Role: LM2901BIPWR compares differential Hall outputs against fixed thresholds to generate direction and stop signals for stepper drivers. Use Value: 1 µs response time enables sub-millisecond motion validation, critical for maintaining vacuum integrity during rapid actuator retraction. |
| Factory Automation Safety Interlock | Cordless Power Tool Battery Management |
Use Scenario: Dual-channel redundant safety interlock in PLC-controlled conveyor systems, where two independent comparators verify emergency stop button state before enabling motor drive. IC Role / Device Role / Timing Role: Comparator channels monitor normally closed contacts; open-circuit detection triggers immediate hardware disable via optocoupler interface. Use Value: 2 kV HBM ESD rating prevents field failures from operator handling or static discharge in ungrounded factory environments. |
Use Scenario: Cell-balancing enable/disable logic in 10S Li-ion battery packs for cordless drills, where comparators monitor individual cell voltages against upper/lower limits. IC Role / Device Role / Timing Role: Four comparators implement per-cell overvoltage, undervoltage, and thermal cutoff thresholds; outputs drive MOSFET gate drivers for passive balancing. Use Value: 3.5 nA input bias current avoids measurement error in high-resistance voltage divider networks used for 10S pack scaling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad differential comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2901QPWRQ1 | Automotive AEC-Q100 Grade 1 qualified (−40°C to +125°C); identical electrical specs but enhanced process control and traceability. | Required for automotive OEM designs; supports PPAP documentation and zero-defect manufacturing requirements. | Select LM2901QPWRQ1 when qualifying for automotive production; LM2901BIPWR remains optimal for industrial and commercial programs. |
| LM339BIPWR | Same B-version silicon, but rated for −40°C to +85°C ambient; otherwise identical offset, speed, and supply specs. | Suitable for cost-sensitive consumer or telecom infrastructure where extended temperature is unnecessary. | Choose LM339BIPWR for non-automotive applications with lower thermal stress; LM2901BIPWR provides guaranteed performance at +125°C. |
Compared with LM2901QPWRQ1, LM2901BIPWR lacks AEC-Q100 certification but offers identical parametric performance at lower cost; compared with LM339BIPWR, it adds 40°C higher maximum operating temperature - critical for under-hood or enclosed motor drive enclosures.
Availability
LM2901BIPWR is available at Aetrix Electronics and suitable for server PSU monitoring, vacuum robot motion control, and factory automation safety interlocks requiring stable component supply across long production lifecycles.
Supply support for LM2901BIPWR 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 expertise in precision signal chain components.
The LM2901BIPWR belongs to TI's industry-standard quad comparator family, engineered for high-reliability voltage monitoring in automotive, industrial, and computing power systems where accuracy, speed, and ruggedness are essential.
FAQ
What is the maximum supply voltage for LM2901BIPWR?
The LM2901BIPWR supports an absolute maximum supply voltage of 38 V, with recommended operation from 2 V to 36 V. This 36 V upper limit enables direct use in 24 V industrial systems and 32 V battery-powered tools without regulation. Exceeding 38 V risks permanent damage per Absolute Maximum Ratings in the official datasheet.
Does LM2901BIPWR support dual-supply operation?
No, LM2901BIPWR is designed exclusively for single-supply operation. Its input common-mode range includes ground and extends to VCC − 2 V, but it does not support split-rail (±V) configurations. For dual-supply applications, engineers must select purpose-built comparators such as TLV3701 or LM311.
Is LM2901BIPWR pin-compatible with legacy LM2901 variants?
Yes, LM2901BIPWR is a drop-in replacement for LM2901, LM339, and LM239 in TSSOP-14 packaging. Pin assignments, electrical behavior, and footprint match exactly - allowing direct substitution without layout changes or schematic updates in existing designs.
What is the input bias current specification for LM2901BIPWR?
The LM2901BIPWR has a typical input bias current of 3.5 nA and a maximum of 25 nA over −40°C to +125°C. This ultra-low bias enables accurate sensing from high-impedance sources like thermistors, RTDs, or photodiodes without significant voltage error due to leakage.
Can LM2901BIPWR drive LEDs directly?
Yes, LM2901BIPWR outputs can sink up to 21 mA per channel, sufficient to drive standard 5 mm LEDs with appropriate series resistors. For example, with a 5 V supply and 2 V LED forward voltage, a 150 Ω resistor limits current to ~20 mA - well within the device's rated sink capability.
LM2901BIPWR 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:
- Differential
- Number of Elements:
- 4
- Output Type:
- Open-Collector
- Voltage - Supply, Single/Dual (±):
- 2V ~ 36V, ±1V ~ 18V
- :
- 3.5mV @ 5V
- Voltage - Input Offset (Max):
- 0.025µA @ 5V
- Current - Input Bias (Max):
- 21mA
- Current - Output (Typ):
- 1.2mA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- 1µs (Typ)
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 125°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 14-TSSOP
LM2901BIPWR FAQ
1.How can I place an order for LM2901BIPWR through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2901BIPWR 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 LM2901BIPWR reliable?
The price and inventory of LM2901BIPWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2901BIPWR is usually 5 days.
3.What payment methods are accepted for LM2901BIPWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2901BIPWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2901BIPWR?
LM2901BIPWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2901BIPWR 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 LM2901BIPWR?
For technical support, including LM2901BIPWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2901BIPWR requirements.
6.How does Aetrix verify that LM2901BIPWR is sourced from the original manufacturer or authorized distributors?
All LM2901BIPWR 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 LM2901BIPWR meets industry standards.
7.What is the process for return or replacement of LM2901BIPWR?
All LM2901BIPWR units undergo pre-shipment inspection (PSI). If there is an issue with LM2901BIPWR, 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 LM2901BIPWR part is unused and in its original packaging.
Return procedure for LM2901BIPWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM2901BIPWR Tags
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