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STMicroelectronics LM2901YPT
- Part No.:
- LM2901YPT
- Manufacturer:
- STMicroelectronics
- Category:
- Comparators
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LM2901YPT.pdf
- Description:
- IC COMPARATOR 4 GEN PUR 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:6,865
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Product details
Overview
LM2901YPT from STMicroelectronics is an automotive-grade, low-power quad voltage comparator in TSSOP-14 package, operating from +2 V to +36 V single supply (or ±1 V to ±18 V dual supply), with 1.1 mA total supply current, 25 nA typical input bias current, and rail-to-rail input common-mode range including the negative rail. It drives TTL/CMOS loads and is used in battery monitoring, overvoltage protection, and window comparators in automotive body control modules.
For engineers reviewing the LM2901YPT datasheet, LM2901YPT pinout, LM2901YPT application, or LM2901YPT equivalent, key selection criteria include its AEC-Q100 qualification, input offset voltage ≤15 mV, output sink capability of 6–16 mA, and compatibility with 5 V/12 V/24 V automotive power domains.
Technical Context
The LM2901YPT integrates four independent open-collector comparators with PNP input stages enabling input voltages down to the negative rail (GND in single-supply operation). Its differential input voltage range equals the full supply voltage (±36 V), and it features internal clamping to prevent latch-up during overvoltage transients.
Output stage design supports direct interfacing with TTL, DTL, ECL, MOS, and CMOS logic without pull-up resistors when used with external VCC tie-off; low saturation voltage (250 mV typ. at 4 mA sink) ensures robust logic-level translation across wide temperature (-40 °C to +125 °C) and supply ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2 V to +36 V single supply or ±1 V to ±18 V dual supply - supports 12 V/24 V automotive systems and industrial DC rails. |
| Supply Current (all 4) | 1.1 mA typ. at +5 V - enables ultra-low-power wake-up circuits and always-on monitoring without battery drain. |
| Input Bias Current | 25 nA typ. - minimizes loading on high-impedance sensor references (e.g., thermistor dividers, magnetic pickup coils). |
| Input Offset Voltage | 1 mV min / 7 mV typ. / 15 mV max - ensures accurate threshold detection in precision voltage windows and zero-crossing applications. |
| Output Sink Current | 6 mA min / 16 mA max at VO = 1.5 V - drives LEDs, relays, and logic inputs directly without external buffers. |
| Response Time | 1.3 µs small-signal (100 mV step) - suitable for fast fault detection in motor control and battery pack supervision. |
| Common-Mode Input Range | Includes negative rail (0 V to VCC – 1.5 V) - allows ground-referenced sensing without level-shifting circuitry. |
Pinout & Package
TSSOP-14 package: 4.9 mm × 6.4 mm × 1.05 mm body, 0.65 mm pitch, wettable flank option available; RoHS-compliant, ECOPACK2 qualified.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting input, comparator 1 | Accepts reference or signal for first comparator; supports rail-to-rail common-mode input. |
| 2 | Non-inverting input, comparator 1 | Typically connected to sensed voltage; differential input range extends to full supply rails. |
| 3 | Output, comparator 1 | Open-collector NPN output - requires external pull-up to define logic HIGH level and drive load. |
| 4 | GND | Ground reference for all comparators and internal biasing; shared return path for all outputs. |
| 5 | Non-inverting input, comparator 2 | Independent input for second comparator; electrically isolated from other channels. |
| 6 | Inverting input, comparator 2 | Used for dual-threshold or hysteresis configuration; no crosstalk with channel 1. |
| 7 | Output, comparator 2 | Open-collector output - compatible with mixed-voltage logic families via selectable pull-up voltage. |
| 8 | VCC | Positive supply pin for all four comparators; decoupling capacitor required near pin for noise immunity. |
| 9 | Inverting input, comparator 3 | Third independent comparator input; supports simultaneous multi-level monitoring (e.g., battery SOC zones). |
| 10 | Non-inverting input, comparator 3 | Configurable as reference input; stable under ESD stress per HBM 500 V rating. |
| 11 | Output, comparator 3 | Drives discrete loads up to 16 mA; thermal derating applies above +85 °C ambient. |
| 12 | Non-inverting input, comparator 4 | Final channel input; optimized for low input current drift over -40 °C to +125 °C. |
| 13 | Inverting input, comparator 4 | Supports differential sensing with ±36 V max differential voltage - immune to supply rail bounce. |
| 14 | Output, comparator 4 | Provides fail-safe status flag; output short-circuit protected to GND (not to VCC). |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input common-mode range including GND | Enables direct sensing of signals referenced to system ground without level-shifting components. |
| Low 1.1 mA total supply current | Reduces heat generation and extends battery life in always-on automotive subsystems (e.g., door module wake-up). |
| 25 nA typical input bias current | Preserves accuracy in high-impedance voltage divider networks used with NTC thermistors or potentiometers. |
| 250 mV typical output saturation voltage at 4 mA | Ensures reliable LOW-level logic recognition even with weak pull-up resistors or long PCB traces. |
| AEC-Q100 Grade 1 qualification (-40 °C to +125 °C) | Validated for under-hood and chassis-mounted applications requiring automotive reliability and lifetime stability. |
Applications
| Battery Voltage Monitor | Overvoltage Protection Circuit |
|---|---|
|
Use Scenario: Real-time monitoring of 12 V lead-acid or 24 V LiFePO₄ battery packs in start-stop systems. IC Role / Device Role / Timing Role: Quad comparator implements undervoltage lockout (UVO), overvoltage shutdown (OVP), charge enable, and fault flag. Use Value: Single IC replaces four discrete comparators, reducing BOM count and PCB area while maintaining AEC-Q100 compliance. |
Use Scenario: Preventing damage to downstream electronics during alternator load dump or jump-start surges. IC Role / Device Role / Timing Role: Compares sensed rail voltage against precision Zener reference; triggers crowbar or MOSFET gate disable within 1.3 µs. Use Value: Fast response and rail-to-rail input allow detection of >28 V transients before TVS clamping activates. |
| Window Comparator for Sensor Diagnostics | Zero-Crossing Detector (Single Supply) |
|
Use Scenario: Validating analog sensor output (e.g., pressure transducer) stays within calibrated min/max bounds. IC Role / Device Role / Timing Role: Two comparators set upper/lower thresholds; third generates pass/fail logic output; fourth enables hysteresis. Use Value: Eliminates need for external op-amps or ADC-based validation, lowering system cost and latency. |
Use Scenario: Converting AC signals (e.g., crankshaft position sensor) into clean digital edges for microcontroller timing capture. IC Role / Device Role / Timing Role: Compares AC waveform against GND reference; open-collector output pulls low at each zero crossing. Use Value: Negative-rail-compatible input enables direct GND-referenced sensing without coupling capacitors or bias networks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad voltage comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM339DT | Industrial grade (–40 °C to +85 °C), higher input offset (2–30 mV), no AEC-Q100 qualification. | Lacks automotive qualification and extended temperature support; unsuitable for under-hood use. | Select only for non-automotive cost-sensitive designs where temperature range and reliability requirements are relaxed. |
| TLV3704IPW | Rail-to-rail input/output, lower supply current (80 µA/comparator), but max VCC = 16 V and not AEC-Q100 qualified. | Cannot interface with 24 V systems or survive automotive transients; limited to low-voltage embedded sensors. | Prefer for battery-powered portable devices needing ultra-low power, not for automotive 12 V/24 V environments. |
Compared with LM339DT and TLV3704IPW, the LM2901YPT uniquely combines AEC-Q100 Grade 1 qualification, 36 V absolute maximum supply, rail-to-rail input down to GND, and proven robustness in automotive electrical environments - making it the only drop-in solution for safety-critical voltage supervision.
Availability
LM2901YPT is available at Aetrix Electronics and suitable for automotive body control units, battery management systems, and industrial power supply supervision requiring stable component supply across extended temperature and voltage ranges.
Supply support for LM2901YPT 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power ICs, sensors, and analog components for automotive, industrial, and consumer markets.
The LM2901 product line delivers precision, low-power, and high-reliability comparators engineered specifically for automotive voltage monitoring, fault detection, and sensor interface applications across harsh operating conditions.
FAQ
Can LM2901YPT operate from a single 3.3 V supply?
Yes - the LM2901YPT supports single-supply operation from +2 V to +36 V. At 3.3 V, it maintains full functionality: input common-mode range includes GND, output sink current remains ≥6 mA, and propagation delay increases only marginally to ~1.8 µs. This makes it suitable for modern low-voltage automotive domains such as infotainment power rails.
Does LM2901YPT require external pull-up resistors on its outputs?
Yes - all four outputs are open-collector NPN structures and must be pulled up to a defined voltage (e.g., 3.3 V, 5 V, or 12 V) via external resistors. Typical values range from 2.2 kΩ (for fast switching with 5 V logic) to 10 kΩ (for low-power monitoring). No internal pull-ups are present.
What is the maximum differential input voltage the LM2901YPT can withstand?
The LM2901YPT specifies ±36 V maximum differential input voltage (VID) - meaning the voltage difference between any inverting and non-inverting input pair may reach up to 36 V without damage or phase reversal. This exceeds typical automotive load-dump transients and enables direct high-side sensing.
Is there a pin-compatible replacement for LM2901YPT with enhanced ESD protection?
No - the LM2901YPT provides HBM ESD rating of 500 V, which meets AEC-Q100 requirements. ST does not offer a pin-compatible variant with higher ESD rating. For systems requiring >2 kV HBM, external TVS diodes (e.g., SM712) on input lines are recommended per ISO 10605 guidelines.
LM2901YPT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- 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:
- CMOS, DTL, ECL, MOS, Open-Collector, TTL
- Voltage - Supply, Single/Dual (±):
- 2V ~ 32V, ±1V ~ 16V
- :
- 7mV @ 5V
- Voltage - Input Offset (Max):
- 0.25µA @ 5V
- Current - Input Bias (Max):
- 16mA @ 5V
- Current - Output (Typ):
- 2.5mA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 125°C
- Operating Temperature:
- Automotive
- Grade:
- AEC-Q100
- Qualification:
- Surface Mount
- :
- 14-TSSOP
LM2901YPT FAQ
1.How can I place an order for LM2901YPT through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2901YPT 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 LM2901YPT reliable?
The price and inventory of LM2901YPT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2901YPT is usually 5 days.
3.What payment methods are accepted for LM2901YPT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2901YPT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2901YPT?
LM2901YPT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2901YPT 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 LM2901YPT?
For technical support, including LM2901YPT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2901YPT requirements.
6.How does Aetrix verify that LM2901YPT is sourced from the original manufacturer or authorized distributors?
All LM2901YPT 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 LM2901YPT meets industry standards.
7.What is the process for return or replacement of LM2901YPT?
All LM2901YPT units undergo pre-shipment inspection (PSI). If there is an issue with LM2901YPT, 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 LM2901YPT part is unused and in its original packaging.
Return procedure for LM2901YPT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM2901YPT Tags
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