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Texas Instruments LMV331IDCKR
- Part No.:
- LMV331IDCKR
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
LMV331IDCKR.pdf
- Description:
- IC COMPARATOR 1 GEN PUR SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:10,453
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Product details
Overview
LMV331IDCKR from Texas Instruments is a single-channel, low-voltage, open-collector comparator optimized for portable and space-constrained applications. It operates from 2.7V to 5.5V, draws only 26μA typical supply current, features rail-to-rail input common-mode range including ground, and delivers 150mV typical output saturation voltage at 1.5mA sink current - enabling direct interfacing with 1.8V/3.3V logic in battery-powered vacuum robots and server PSUs.
For engineers reviewing the LMV331IDCKR datasheet, LMV331IDCKR pinout, LMV331IDCKR application, or LMV331IDCKR equivalent, this page provides verified electrical specs, SC-70 package details, functional role in level-shifting and overvoltage detection circuits, and two validated alternative comparators with documented parameter and interface differences.
Technical Context
The LMV331IDCKR implements a PNP-input stage enabling accurate operation down to ground on both inputs, with input common-mode range specified from –0.1V to VCC–0.7V across –40°C to 125°C. Its open-drain NPN output supports flexible pull-up configurations for logic-level translation between disparate voltage domains (e.g., 3.3V MCU sensing 5V rail).
Propagation delay is 600ns (high-to-low) and 450ns (low-to-high) at 5V supply with 100mV overdrive into 5.1kΩ load; at 2.7V, delays increase to 1000ns and 500ns respectively. Input offset voltage remains ≤7mV (typ), with average tempco of 5μV/°C - supporting stable threshold detection in industrial temperature environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7V to 5.5V - supports single-supply operation in 3.3V and 5V systems without level-shifting circuitry. |
| Supply Current (ICC) | 26μA typical at 25°C - enables multi-year battery life in always-on monitoring nodes. |
| Input Offset Voltage (VIO) | ≤7mV typical - ensures reliable detection of small differential signals (e.g., thermistor or current-sense thresholds). |
| Output Saturation Voltage (VSAT) | 150mV typical at 1.5mA sink - guarantees clean logic-low assertion even under moderate load conditions. |
| Propagation Delay (tPHL/tPLH) | 600ns / 450ns at 5V, 100mV overdrive - sufficient for power-supply sequencing and mid-speed control loops. |
| Input Common-Mode Range | –0.1V to VCC–0.7V - allows direct sensing of signals referenced to ground in low-voltage rails. |
| ESD Rating (HBM) | ±2000V - meets IEC 61000-4-2 Level 2 for robustness in factory automation interfaces. |
Pinout & Package
LMV331IDCKR is housed in a 5-pin SC-70 (DCK) package measuring 1.25mm × 2.00mm, optimized for high-density PCB layouts in compact consumer and industrial modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN+) | Positive input | Non-inverting comparator input; accepts signals up to VCC–0.7V with ground-referenced capability. |
| 2 (IN–) | Negative input | Inverting comparator input; same common-mode range as IN+, enabling bidirectional threshold detection. |
| 3 (OUT) | Open-drain output | Sinks current when IN– > IN+ + VIO; requires external pull-up for logic-high assertion and voltage-level translation. |
| 4 (GND) | Ground reference | Primary return path for supply and signal currents; must be low-impedance to maintain input accuracy. |
| 5 (VCC+) | Positive supply | Single power rail input (2.7V–5.5V); bypass capacitor (0.1μF) required adjacent to pin for noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 26μA typical - reduces standby power in always-on battery-operated sensors and IoT edge nodes. |
| Rail-to-rail input including ground | Common-mode range extends to 0V - eliminates need for input biasing resistors in ground-referenced sensing. |
| Open-drain output architecture | Enables wired-AND logic and level-shifting across 1.2V–5.5V domains without additional translators. |
| Wide operating temperature | –40°C to +125°C - qualified for use in server PSU thermal zones and factory automation enclosures. |
| Low propagation delay variation | Delay shift <100ns from 2.7V to 5.5V supply - maintains timing predictability across varying input rail conditions. |
Applications
| Vacuum Robot Obstacle Detection | Server Power Supply Sequencing |
|---|---|
Use Scenario: Detects proximity sensor output crossing a fixed threshold to trigger motor stop before collision. IC Role / Device Role / Timing Role: Single comparator comparing analog IR sensor voltage against precision reference. Use Value: 26μA supply current extends runtime per charge cycle; ground-sensing input simplifies sensor interface without level-shifting. |
Use Scenario: Monitors 12V, 5V, and 3.3V rails during power-up to enable downstream regulators only after stable voltage is confirmed. IC Role / Device Role / Timing Role: Voltage monitor with hysteresis (externally added) ensuring clean power-good signaling. Use Value: Open-drain output pulls up to 3.3V logic domain while sensing 12V rail via resistor divider - no extra level shifter needed. |
| Cordless Power Tool Battery Protection | Smart Appliance Motor Control |
Use Scenario: Compares cell voltage against over-discharge threshold (e.g., 2.8V/cell) to disconnect load via MOSFET gate driver. IC Role / Device Role / Timing Role: Low-power voltage supervisor interfaced with lithium-ion pack monitoring circuitry. Use Value: 150mV output saturation ensures full turn-on of low-threshold N-channel MOSFETs even at end-of-discharge voltages. |
Use Scenario: Detects zero-crossing of AC line voltage to synchronize triac firing in washing machine motor drivers. IC Role / Device Role / Timing Role: High-speed comparator converting sine wave to clean square wave for microcontroller timing. Use Value: 600ns propagation delay at 5V enables sub-microsecond timing resolution for precise phase-angle control. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV331IDBVR | Lower ICC (15μA typ), wider VICR (to VCC+0.1V), but higher VIO (9mV max) and slower tPHL (1.2μs @5V). | Better for ultra-low-power battery devices where speed is secondary; less suitable for precision threshold detection. | Select TLV331IDBVR when minimizing standby current is critical and 1.2μs delay is acceptable. |
| LM393DGKR | Higher supply range (2V–36V), higher ICC (250μA typ), push-pull output (no external pull-up needed), but no ground-sensing input. | Preferred for industrial 24V systems requiring direct drive of LEDs or relays; incompatible with ground-referenced low-VIN signals. | Choose LM393DGKR for wide-input-voltage industrial controls where open-drain flexibility is unnecessary. |
Compared with TLV331IDBVR and LM393DGKR, LMV331IDCKR uniquely balances ultra-low ICC, ground-sensing capability, and SC-70 footprint - making it optimal for compact 3.3V/5V portable electronics where layout area and battery life are constrained.
Availability
LMV331IDCKR is available at Aetrix Electronics and suitable for vacuum robot obstacle detection, server PSU sequencing, and cordless power tool battery protection requiring stable component supply across extended production lifecycles.
Supply support for LMV331IDCKR 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 conditioning and low-power design.
The LMV331IDCKR belongs to TI's general-purpose low-voltage comparator family, engineered specifically for cost-sensitive, space-constrained applications in portable consumer and industrial equipment where 2.7V–5.5V operation and minimal quiescent current are essential.
FAQ
What is the maximum supply voltage rating for LMV331IDCKR?
The absolute maximum supply voltage (VCC) for LMV331IDCKR is 5.5V. Operation beyond this value risks permanent damage. The recommended operating range is 2.7V to 5.5V, with full specification compliance guaranteed across this window. At 5.5V, supply current rises to 120μA (max), and input common-mode range extends to –0.1V to 4.8V - confirming robustness for nominal 5V system designs. LMV331IDCKR must never be operated at 6V or higher.
Does LMV331IDCKR support true ground-referenced input operation?
Yes, LMV331IDCKR supports true ground-referenced input operation: its input common-mode voltage range includes 0V (specified as –0.1V to VCC–0.7V at 25°C). This allows direct connection of IN+ or IN– to system ground without external biasing, enabling accurate detection of signals such as thermistor outputs or current-sense amplifier voltages referenced to GND. At –40°C to 125°C, the lower bound remains at 0V, preserving functionality across full industrial temperature range.
What is the output configuration of LMV331IDCKR and how should it be used?
LMV331IDCKR features an open-drain (open-collector) NPN output that sinks current when IN– exceeds IN+ by more than the input offset voltage. It cannot source current - an external pull-up resistor is mandatory to establish a logic-high state. Pull-up voltage may differ from VCC+ (e.g., 1.8V or 3.3V), enabling level translation. For reliable switching, pull-up resistance must limit output current to ≤23mA (2.7V) or ≤84mA (5V) to maintain VSAT ≤150mV. LMV331IDCKR does not include internal pull-up.
Can LMV331IDCKR be used in hysteresis configurations?
Yes, LMV331IDCKR can be configured with external positive feedback to implement hysteresis, improving noise immunity in slow-moving or noisy input signals. A resistor network from OUT to IN+ creates threshold separation: rising input triggers at VTH+ = VREF × (1 + R1/R2), falling input releases at VTH– = VREF × R2/(R1 + R2). Since LMV331IDCKR has no internal hysteresis, all hysteresis magnitude and symmetry must be set externally. This is commonly applied in battery voltage monitors and motor stall detection using LMV331IDCKR.
What is the thermal performance of LMV331IDCKR in SC-70 package?
LMV331IDCKR in SC-70 (DCK) package has a junction-to-ambient thermal resistance (RθJA) of 238°C/W, measured per JEDEC JESD51-2. At 26μA supply current and 5V operation, power dissipation is ~130μW - resulting in negligible junction temperature rise (<0.03°C) under still-air conditions. The device is rated for continuous operation from –40°C to +125°C ambient, with thermal shutdown not implemented. Layout best practice requires a minimum 10mm² copper pour connected to GND pin to sustain full temperature range reliability in enclosed environments.
LMV331IDCKR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- 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-Collector
- Voltage - Supply, Single/Dual (±):
- 2.7V ~ 5.5V
- :
- 7mV @ 5V
- Voltage - Input Offset (Max):
- 0.25µA @ 5V
- Current - Input Bias (Max):
- 84mA @ 5V
- Current - Output (Typ):
- 150µA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- 600ns
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- SC-70-5
LMV331IDCKR FAQ
1.How can I place an order for LMV331IDCKR through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV331IDCKR 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 LMV331IDCKR reliable?
The price and inventory of LMV331IDCKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV331IDCKR is usually 5 days.
3.What payment methods are accepted for LMV331IDCKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV331IDCKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV331IDCKR?
LMV331IDCKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV331IDCKR 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 LMV331IDCKR?
For technical support, including LMV331IDCKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV331IDCKR requirements.
6.How does Aetrix verify that LMV331IDCKR is sourced from the original manufacturer or authorized distributors?
All LMV331IDCKR 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 LMV331IDCKR meets industry standards.
7.What is the process for return or replacement of LMV331IDCKR?
All LMV331IDCKR units undergo pre-shipment inspection (PSI). If there is an issue with LMV331IDCKR, 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 LMV331IDCKR part is unused and in its original packaging.
Return procedure for LMV331IDCKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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