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Texas Instruments LM3710YQMMX-232/NOPB
- Part No.:
- LM3710YQMMX-232/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LM3710YQMMX-232/NOPB.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 10VSSOP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
LM3710YQMMX-232/NOPB from Texas Instruments is a microprocessor supervisory IC with factory-programmed 2.32V reset threshold, active-low RESET output, watchdog timer, manual reset input (MR), power-fail comparator (PFI/PFO), and early-warning low-line output (LLO). It operates from 1.0V to 5.5V supply, consumes only 28 µA, and asserts reset down to VCC = 1.0V - ideal for battery-backed embedded controllers monitoring critical 2.5V or 3.3V rails.
For engineers reviewing the LM3710YQMMX-232/NOPB datasheet, LM3710YQMMX-232/NOPB pinout, LM3710YQMMX-232/NOPB application, or LM3710YQMMX-232/NOPB equivalent, key selection considerations include its precise 2.32V reset threshold tolerance (±0.5% at 25°C), 1.225V PFI reference, LLO threshold at 1.02×VRST, VSSOP-10 package compatibility, and watchdog timeout options ranging from 6.2 ms to 38.4 s.
Technical Context
The LM3710YQMMX-232/NOPB integrates five independent monitoring functions: precision voltage supervisor (2.32V threshold), manual reset with 56 kΩ internal pull-up and 1.225V threshold, 1.225V power-fail comparator driving open-drain PFO, low-line comparator triggering LLO at 1.02×VRST with 0.0032×VRST hysteresis, and watchdog timer with configurable timeout periods. All comparators use trimmed bandgap references for stability across −40°C to +85°C.
Its RESET output is active-low, asserted during power-up, brownout (VCC < 2.32V), MR assertion (<1.225V), or watchdog timeout. The device requires no external components, supports reset timeout periods of 1–2.24 s (depending on variant code), and features guaranteed operation down to VCC = 1.0V - enabling reliable supervision even during deep brownouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.32V ±0.5% at 25°C; ensures deterministic reset initiation at precisely defined supply voltage drop |
| Supply Voltage Range | 1.0V to 5.5V; enables operation during severe brownout and compatibility with 1.2V–5V system rails |
| VCC Supply Current | 28 µA typical; minimizes quiescent load on battery or low-power supplies |
| Reset Timeout Period | 1.4 ms typical; holds processor in reset long enough for stable clock and supply recovery |
| Watchdog Timeout | 6.2 ms typical (E/F/G/H variant); detects microprocessor lockup within milliseconds of lost activity |
| PFI Threshold | 1.225V ±25 mV; provides accurate, temperature-stable reference for external voltage divider monitoring |
| LLO Threshold | 1.02 × VRST = 2.366V; delivers non-maskable interrupt ~2% above reset point for early power-fail warning |
Pinout & Package
VSSOP-10 (DGS) package: 3.0 mm × 3.0 mm body, 0.5 mm pitch, 1.1 mm max height, RoHS-compliant tin (SN) lead finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Main power supply input; powers all internal circuitry and drives RESET, PFO, LLO outputs |
| 2 | MR | Manual reset input; internally pulled up to VCC via 56 kΩ; asserts RESET when pulled below 1.225V |
| 3 | PFI | Power-fail comparator input; referenced to 1.225V internal reference; triggers PFO low when voltage falls |
| 4 | WDI | Watchdog input; high-impedance transition detector; resets internal timer on each edge; timeout asserts RESET |
| 5 | GND | Ground reference for all analog and digital functions; must be low-impedance connection |
| 6,9 | NC | No-connect pins; factory test only; must remain unconnected in PCB layout |
| 7 | LLO | Low-line output; open-drain; goes low when VCC drops to 1.02×VRST for early NMI warning |
| 8 | PFO | Power-fail output; open-drain; goes low when PFI < 1.225V, signaling auxiliary supply failure |
| 10 | RESET | Active-low reset output; totem-pole drive; asserted during power-up, brownout, MR, or WDI timeout |
Key Features
| Feature | Design Value |
|---|---|
| Factory-programmed 2.32V reset threshold | Eliminates external resistor divider; guarantees ±0.5% accuracy at 25°C and ±2% over full temperature range |
| Integrated low-line output (LLO) | Provides early warning interrupt at 1.02×VRST - 47 mV above reset point - enabling graceful shutdown before reset triggers |
| 1.225V precision PFI reference | Enables accurate monitoring of secondary supplies (e.g., battery, analog rail) without external reference IC |
| Manual reset with internal 56 kΩ pull-up | Reduces BOM count; supports direct connection to pushbutton or logic-level signal without external resistor |
| Watchdog timer with 6.2 ms default timeout | Detects firmware hangs within sub-millisecond window; prevents silent system lockup in safety-critical applications |
Applications
| Industrial PLC Controller | Automotive Body Control Module |
|---|---|
Use Scenario: Monitors 2.5V core supply and 3.3V I/O rail in programmable logic controller operating in harsh industrial environments with wide temperature swings and EMI. IC Role / Device Role / Timing Role: Supervisory IC providing power-on reset, brownout detection, manual reset, and watchdog supervision - ensuring deterministic boot and runtime fault recovery. Use Value: Prevents corrupted state machine execution during voltage transients; LLO triggers diagnostic logging before reset occurs, aiding root-cause analysis. |
Use Scenario: Embedded in automotive BCM to supervise 2.5V MCU core and 5V sensor interface supply, with PFI monitoring backup battery voltage. IC Role / Device Role / Timing Role: Dual-supply monitor with independent PFI input and early-warning LLO output - delivering fail-safe behavior per ISO 26262 ASIL-B requirements. Use Value: PFO signals battery depletion >100 ms before main supply brownout; LLO initiates controlled shutdown sequence preserving EEPROM integrity. |
| Medical Infusion Pump | Smart Energy Meter |
Use Scenario: Ensures safe operation of battery-powered infusion pump MCU by supervising 3.3V system rail and detecting motor driver supply faults via PFI. IC Role / Device Role / Timing Role: Critical power monitor with reset assertion down to 1.0V VCC - maintaining supervision during deep battery discharge cycles. Use Value: Guarantees immediate reset if supply drops below 2.32V, preventing erroneous dosing commands; MR enables clinician-initiated recalibration. |
Use Scenario: Supervises 3.3V metrology SoC and 5V communication interface in utility-grade smart meter exposed to grid voltage sags and surges. IC Role / Device Role / Timing Role: Multi-function supervisor with watchdog, manual reset, and dual-output alerting (PFO for AC loss, LLO for imminent brownout). Use Value: PFO triggers backup capacitor discharge into RTC and memory retention; LLO activates last-gasp data logging before main reset occurs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3808G33DBVR | Fixed 3.3V reset threshold; no LLO output; 350 nA quiescent current; 200 ms min reset timeout | Lacks early-warning low-line output and PFI comparator; suited for simpler single-rail systems | Select when only basic 3.3V reset is required and ultra-low IQ is critical; not suitable for 2.32V or dual-supply monitoring. |
| MAX6369KA23+T | 2.33V reset threshold; includes watchdog and MR; no PFI or LLO; 1.6 µA IQ; 140 ms reset timeout | Missing power-fail comparator and low-line warning; higher reset timeout limits fast-recovery systems | Choose for space-constrained designs needing minimal IQ and basic supervision; omit where PFI/LLO functionality is mandatory. |
Compared with TPS3808G33DBVR and MAX6369KA23+T, the LM3710YQMMX-232/NOPB uniquely combines 2.32V precision reset, integrated PFI comparator, and early-warning LLO in a single VSSOP-10 package - enabling comprehensive power monitoring without external components or additional ICs.
Availability
LM3710YQMMX-232/NOPB is available at Aetrix Electronics and suitable for industrial PLC controllers, automotive body control modules, medical infusion pumps, smart energy meters, and critical µP power monitoring requiring stable component supply across extended temperature ranges.
Supply support for LM3710YQMMX-232/NOPB 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 designing analog ICs, embedded processors, and connectivity solutions for industrial, automotive, and consumer markets.
The LM3710 series belongs to TI's microprocessor supervisory product line, engineered specifically for robust, multi-function power monitoring in battery-operated and mission-critical embedded systems without backup batteries.
FAQ
What is the exact reset threshold voltage of the LM3710YQMMX-232/NOPB?
The LM3710YQMMX-232/NOPB has a factory-programmed reset threshold of 2.32V, with ±0.5% accuracy at 25°C and ±2% over the full −40°C to +85°C operating range. This value is laser-trimmed during production and does not require external resistors - the '232' in the part number directly encodes the 2.32V specification.
Does the LM3710YQMMX-232/NOPB support watchdog timer functionality?
Yes, the LM3710YQMMX-232/NOPB includes a watchdog timer with a default timeout period of 6.2 ms (variant code E/F/G/H). The WDI pin monitors transitions on a microprocessor output line; if no edge occurs within the timeout window, the device asserts the active-low RESET output to recover from firmware lockup.
What is the purpose of the LLO pin on the LM3710YQMMX-232/NOPB?
The LLO (Low-Line Output) pin on the LM3710YQMMX-232/NOPB is an open-drain output that goes low when VCC falls to 1.02 × VRST (≈2.366V), providing early warning of imminent power failure ~47 mV above the 2.32V reset threshold. It is commonly used to trigger a non-maskable interrupt (NMI) for controlled shutdown or data preservation.
Can the LM3710YQMMX-232/NOPB monitor a secondary power supply?
Yes, the LM3710YQMMX-232/NOPB includes a dedicated PFI (Power-Fail Input) pin with a precise 1.225V internal reference. By connecting an external resistor divider from a secondary supply (e.g., battery or analog rail) to PFI, the device generates a corresponding PFO (Power-Fail Output) signal when that supply drops below the threshold - enabling dual-supply monitoring with one IC.
What package type and footprint does the LM3710YQMMX-232/NOPB use?
The LM3710YQMMX-232/NOPB uses the VSSOP-10 (DGS) package: 3.0 mm × 3.0 mm body, 0.5 mm pin pitch, 1.1 mm maximum height, with pin 1 located in quadrant Q1 of the tape-and-reel orientation. Its land pattern follows IPC-7351 guidelines and is compatible with standard SMT assembly processes.
LM3710YQMMX-232/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.32V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-VSSOP
LM3710YQMMX-232/NOPB FAQ
1.How can I place an order for LM3710YQMMX-232/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3710YQMMX-232/NOPB 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 LM3710YQMMX-232/NOPB reliable?
The price and inventory of LM3710YQMMX-232/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM3710YQMMX-232/NOPB is usually 5 days.
3.What payment methods are accepted for LM3710YQMMX-232/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3710YQMMX-232/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM3710YQMMX-232/NOPB?
LM3710YQMMX-232/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3710YQMMX-232/NOPB 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 LM3710YQMMX-232/NOPB?
For technical support, including LM3710YQMMX-232/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3710YQMMX-232/NOPB requirements.
6.How does Aetrix verify that LM3710YQMMX-232/NOPB is sourced from the original manufacturer or authorized distributors?
All LM3710YQMMX-232/NOPB 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 LM3710YQMMX-232/NOPB meets industry standards.
7.What is the process for return or replacement of LM3710YQMMX-232/NOPB?
All LM3710YQMMX-232/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM3710YQMMX-232/NOPB, 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 LM3710YQMMX-232/NOPB part is unused and in its original packaging.
Return procedure for LM3710YQMMX-232/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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