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STMicroelectronics LMV331ICT
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- Part No.:
- LMV331ICT
- Manufacturer:
- STMicroelectronics
- Category:
- Comparators
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
LMV331ICT.pdf
- Description:
- IC COMPARATOR 1 GEN PUR SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:20,600
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Product details
Overview
LMV331ICT from STMicroelectronics is a single-channel, low-voltage, open-drain comparator with 2.7–5 V supply operation, 20 µA typical supply current, 200 ns propagation delay (at 100 mV overdrive), -40°C to +125°C operating temperature range, and input common-mode range extending to ground - used for battery-supplied voltage monitoring in portable electronics.
For engineers reviewing the LMV331ICT datasheet, LMV331ICT pinout, LMV331ICT application, or LMV331ICT equivalent, key selection considerations include its rail-to-rail input capability, ultra-low quiescent current, open-drain output compatibility with mixed-voltage logic, and SOT323-5 (SC70-5) footprint for space-constrained PCB layouts.
Technical Context
The LMV331ICT operates as a precision voltage comparator with internal offset voltage trimmed to ≤7 mV at 25°C and drift of only 5 µV/°C across -40°C to +125°C. Its input stage supports common-mode voltages from -0.1 V to VCC–0.3 V, enabling direct ground-referenced sensing.
It features an open-drain NMOS output stage capable of sinking up to 47 mA at 2.7 V and 93 mA at 5 V, with VOL ≤20 mV at ISINK = 1 mA (2.7 V) and ≤700 mV at ISINK = 4 mA (-40°C to +125°C). Propagation delay is asymmetric: TPHL = 200 ns / TPLH = 400 ns (100 mV overdrive, 5.1 kΩ load, 50 pF).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.7 V to 5.0 V - enables direct integration into 3.3 V and 2.8 V battery-powered systems without level-shifting. |
| Supply Current | 20 µA typical at 25°C - reduces standby power draw in always-on detection circuits (e.g., lid-open sensors, low-battery alerts). |
| Propagation Delay | 200 ns (TPHL), 400 ns (TPLH) at 100 mV overdrive - supports fast threshold detection in real-time power sequencing and fault response. |
| Input Offset Voltage | 1–7 mV (25°C), 1–9 mV (-40°C to +125°C) - ensures reliable decision margins for ±10 mV window comparators in precision sensing. |
| Output Type | Open-drain NMOS - allows wired-OR logic, I²C-compatible pull-up flexibility, and interface with 1.8 V, 3.3 V, or 5 V logic domains. |
| Input Common-Mode Range | -0.1 V to VCC–0.3 V - permits direct connection to ground-referenced signals (e.g., battery cell voltage, thermistor dividers) without biasing resistors. |
| ESD Rating | 2 kV HBM, 200 V MM - meets industrial handling requirements for assembly in non-ESD-controlled environments. |
Pinout & Package
LMV331ICT is packaged in SC70-5 (SOT323-5), a 1.8 mm × 2.1 mm surface-mount package with 0.65 mm lead pitch, optimized for high-density portable PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - IN− | Inverting input | Accepts reference or feedback signal; differential input pair enables hysteresis implementation via external resistor network. |
| 2 - IN+ | Non-inverting input | Receives sensed signal (e.g., battery voltage); supports rail-to-rail common-mode range down to -0.1 V. |
| 3 - VCC+ | Positive supply | Connects to main system rail (2.7–5 V); no separate ground pin - VCC− is implicit system ground (pin 5). |
| 4 - OUT | Open-drain output | Sinks current only; requires external pull-up to define logic-high level and voltage domain (e.g., 1.8 V for MCU GPIO). |
| 5 - VCC− | Negative supply / Ground | System ground reference; all input/output specifications referenced to this node. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input common-mode range | Extends 0.1 V below ground and to within 0.3 V of VCC+, eliminating need for input bias networks in single-supply designs. |
| Ultra-low quiescent current | 20 µA typical at 25°C - extends battery life in always-active monitoring circuits (e.g., >1-year runtime on CR2032 for low-duty-cycle wake-up). |
| High-temperature operation | Guaranteed performance from -40°C to +125°C - suitable for under-hood automotive modules and industrial edge controllers. |
| Fast propagation with low overdrive sensitivity | 200 ns TPHL at 10 mV overdrive - enables accurate timing in narrow-pulse detection (e.g., zero-crossing in brushless motor commutation). |
| Robust ESD protection | 2 kV HBM rating - reduces field failure risk during manual handling and board-level rework without additional protection components. |
Applications
| Battery Voltage Monitor | Power Sequencing Supervisor |
|---|---|
|
Use Scenario: Detecting when a Li-ion cell drops below 3.0 V to trigger low-power mode or shutdown in wearables. IC Role / Device Role: Single-threshold comparator comparing cell voltage against a precision reference (e.g., TLV431). Use Value: 20 µA supply current minimizes self-discharge impact; open-drain output interfaces directly with 1.8 V microcontroller interrupt pin. |
Use Scenario: Validating correct ramp-up order of 1.2 V, 1.8 V, and 3.3 V rails before releasing reset in FPGA-based edge AI modules. IC Role / Device Role: Three independent LMV331ICTs configured as window comparators per rail, feeding AND-gated enable signal. Use Value: 200 ns propagation delay ensures sub-microsecond response to out-of-spec rail deviation, preventing configuration corruption. |
| USB-C Port Detection | Thermal Trip Circuit |
|
Use Scenario: Identifying presence of USB-C sink by detecting CC line pull-down in portable docking stations. IC Role / Device Role: Comparator comparing CC pin voltage against 0.4 V threshold to distinguish source vs. sink attachment. Use Value: Input common-mode range including ground allows direct connection to CC line without level-shifting; SC70-5 footprint saves space near connector. |
Use Scenario: Shutting down motor driver when NTC thermistor voltage exceeds safe limit in BLDC fan control. IC Role / Device Role: Hysteresis-enabled comparator using internal 5 µV/°C offset stability to avoid chatter near trip point. Use Value: Guaranteed operation to +125°C ensures reliability in enclosed enclosures; open-drain output drives MOSFET gate directly via pull-up. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar single-channel low-voltage comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV331IDBVR | Lower input offset (0.8 mV max), higher supply current (60 µA), same SC70-5 package. | Better accuracy-critical applications (e.g., precision ADC reference monitoring), but 3× higher quiescent current limits battery life. | Select TLV331IDBVR only when <1 mV offset is mandatory and power budget allows ≥60 µA. |
| NCS2200SN2T1G | Pull-up integrated on-chip, push-pull output, 1.8–5.5 V supply, 12 µA supply current. | Eliminates external pull-up resistor but lacks open-drain flexibility; not compatible with wired-OR bus topologies. | Choose NCS2200SN2T1G for simplified BOM in single-load, fixed-voltage logic interfaces where open-drain is unnecessary. |
Compared with TLV331IDBVR and NCS2200SN2T1G, LMV331ICT uniquely balances ultra-low power (20 µA), open-drain versatility, and wide temperature support (-40°C to +125°C) in a space-efficient SC70-5 package - making it optimal for battery-constrained, multi-rail, or thermally demanding embedded systems.
Availability
LMV331ICT is available at Aetrix Electronics and suitable for battery-powered portable devices, industrial sensor nodes, and automotive body electronics requiring stable component supply and long-term manufacturability.
Supply support for LMV331ICT 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 analog, microcontroller, power, and sensor solutions for industrial, automotive, and consumer markets.
The LMV331ICT belongs to ST's general-purpose low-voltage comparator product line, engineered specifically for energy-efficient, space-constrained applications where supply voltage headroom is limited and thermal robustness is critical.
FAQ
What is the maximum sink current capability of the LMV331ICT output?
The LMV331ICT output can sink up to 47 mA at 2.7 V supply and up to 93 mA at 5 V supply, with guaranteed VOL ≤700 mV at ISINK = 4 mA across the full -40°C to +125°C temperature range. This enables direct driving of LEDs, small relays, or MOSFET gates without external buffers.
Can the LMV331ICT operate with a 1.8 V supply?
No - the LMV331ICT has a minimum specified supply voltage of 2.7 V per its absolute maximum ratings and electrical characteristics tables. Operation below 2.7 V is not characterized or guaranteed, and input common-mode range and propagation delay may degrade unpredictably.
Does the LMV331ICT require an external pull-up resistor on the output?
Yes - the LMV331ICT features an open-drain output that can only pull low. An external pull-up resistor is mandatory to establish a defined logic-high voltage level; value selection depends on required rise time and interfaced logic family (e.g., 10 kΩ for 3.3 V MCU GPIO).
How does the input offset voltage drift affect performance over temperature?
The LMV331ICT exhibits a maximum input offset voltage drift of 5 µV/°C across -40°C to +125°C. Over a 165°C span, this contributes ≤825 µV total drift - negligible for thresholds >10 mV, but relevant in precision window comparators where hysteresis must exceed drift-induced uncertainty.
LMV331ICT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 1
- Output Type:
- Open-Drain
- Voltage - Supply, Single/Dual (±):
- 2.7V ~ 5V
- :
- 7mV @ 5V
- Voltage - Input Offset (Max):
- 0.25µA @ 5V
- Current - Input Bias (Max):
- 93mA @ 5V
- Current - Output (Typ):
- 100µA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- 550ns
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- SC-70-5
LMV331ICT FAQ
1.How can I place an order for LMV331ICT through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV331ICT 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 LMV331ICT reliable?
The price and inventory of LMV331ICT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV331ICT is usually 5 days.
3.What payment methods are accepted for LMV331ICT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV331ICT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV331ICT?
LMV331ICT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV331ICT 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 LMV331ICT?
For technical support, including LMV331ICT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV331ICT requirements.
6.How does Aetrix verify that LMV331ICT is sourced from the original manufacturer or authorized distributors?
All LMV331ICT 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 LMV331ICT meets industry standards.
7.What is the process for return or replacement of LMV331ICT?
All LMV331ICT units undergo pre-shipment inspection (PSI). If there is an issue with LMV331ICT, 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 LMV331ICT part is unused and in its original packaging.
Return procedure for LMV331ICT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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