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Texas Instruments LM3710XQMM-308/NOPB
- Part No.:
- LM3710XQMM-308/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LM3710XQMM-308/NOPB.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 10VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,174
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Product details
Overview
LM3710XQMM-308/NOPB from Texas Instruments is a microprocessor supervisory IC in VSSOP-10 package, providing 3.08V reset threshold, power-fail detection (1.225V PFI threshold), low-line output (1.02×VRST), manual reset input, and watchdog timer with factory-programmable timeout. It ensures reset assertion down to 1.0V VCC and supports critical µP power monitoring in automotive and embedded systems.
For engineers reviewing the LM3710XQMM-308/NOPB datasheet, LM3710XQMM-308/NOPB pinout, LM3710XQMM-308/NOPB application, or LM3710XQMM-308/NOPB equivalent, key selection considerations include its fixed 3.08V reset voltage, dual open-drain outputs (RESET and PFO), integrated 56 kΩ MR pull-up, and VSSOP-10 footprint compatibility with industrial temperature range (−40°C to +85°C).
Technical Context
The LM3710XQMM-308/NOPB integrates five independent monitoring functions: precision reset comparator (3.08V ±0.5% at 25°C), separate 1.225V power-fail comparator (PFI/PFO), early-warning low-line comparator (LLO at 1.02×VRST), debounced manual reset input (MR with 1.225V threshold and 56 kΩ internal pull-up), and watchdog timer with factory-set timeout (E/J/N/S option codes per datasheet). All comparators feature 0.0032×VRST hysteresis.
It uses totem-pole RESET output (active-low) and open-drain PFO/LLO outputs, operates from 1.0V to 5.5V VCC, draws only 28 µA typical supply current, and maintains functional reset assertion down to VCC = 1.0V - enabling reliable brownout detection in battery-backed and low-voltage systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.08V ±0.5% at 25°C; ensures deterministic power-on reset for 3.3V systems without external resistor divider. |
| VCC Operating Range | 1.0V to 5.5V; supports operation during deep brownout and enables use with Li-ion, coin-cell, or wide-input DC/DC supplies. |
| Supply Current | 28 µA typical; minimizes quiescent load on backup rails and extends battery life in always-on monitoring applications. |
| Power-Fail Input Threshold | 1.225V fixed; allows direct connection of external voltage divider to monitor unregulated supplies or secondary rails. |
| Low-Line Output Threshold | 1.02 × VRST (≈3.14V); triggers NMI interrupt ~2% above reset point, providing programmable early warning before system reset. |
| Reset Timeout Period | 1–2 ms (E-code variant); guarantees minimum reset pulse width sufficient to initialize most ARM Cortex-M and legacy µPs. |
| Watchdog Timeout | 6.2 ms (E-code); provides fast lockup detection for real-time firmware with tight timing constraints. |
Pinout & Package
VSSOP-10 package (DGS), 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 comparators, timer, and outputs; valid from 1.0V to 5.5V. |
| 2 | MR | Manual reset input; internally pulled up to VCC via 56 kΩ; asserts RESET when pulled below 1.225V for >25 µs. |
| 3 | PFI | Power-fail comparator input; referenced to 1.225V internal bandgap; used to monitor auxiliary supplies or raw battery voltage. |
| 4 | WDI | Watchdog input; high-impedance transition detector; resets internal timer on each edge; timeout triggers RESET if idle >6.2 ms. |
| 5 | GND | Analog/digital ground reference for all comparators, outputs, and internal circuitry; must be low-impedance connection. |
| 6,9 | NC | No-connect pins; factory test pads only; must remain unconnected and floating in PCB layout. |
| 7 | LLO | Open-drain low-line output; goes low when VCC falls below 1.02×VRST; typically wired to µP NMI pin for early brownout alert. |
| 8 | PFO | Open-drain power-fail output; goes low when PFI < 1.225V; used for system-level power sequencing or backup enable control. |
| 10 | RESET | Active-low totem-pole reset output; drives low during power-up, brownout, MR assertion, or watchdog timeout; holds for 1–2 ms. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-programmed reset threshold | Fixed 3.08V with ±0.5% accuracy at 25°C eliminates need for external resistor network and reduces BOM count. |
| Dual independent comparators | Separate 3.08V reset and 1.225V PFI inputs allow simultaneous monitoring of main VCC and auxiliary supply (e.g., battery or 5V rail). |
| Early-warning LLO output | Asserts at 1.02×VRST with 0.0032×VRST hysteresis, enabling deterministic NMI generation 20–50 ms before system reset. |
| Integrated MR pull-up | 56 kΩ internal pull-up on MR pin simplifies pushbutton interface - only requires momentary switch to GND, no external resistor needed. |
| Low-power watchdog timer | 6.2 ms timeout (E-code) consumes zero additional current beyond 28 µA baseline, suitable for energy-constrained IoT endpoints. |
Applications
| Automotive Body Control Module | Industrial PLC I/O Card |
|---|---|
|
Use Scenario: Monitoring 3.3V microcontroller supply in door module with battery backup and CAN communication. IC Role / Device Role / Timing Role: Supervisory IC asserting RESET during ignition cycling, generating NMI via LLO on battery sag, and detecting alternator failure via PFI. Use Value: Prevents firmware corruption during 12V battery dip to 9V by holding RESET until VCC recovers above 3.08V for ≥1.4 ms. |
Use Scenario: Power supervision for ARM-based controller on modular I/O carrier board with multiple isolated DC/DC rails. IC Role / Device Role / Timing Role: Primary VCC supervisor with secondary PFI monitoring of 24V field power; LLO tied to µP NMI for predictive shutdown before brownout. Use Value: Enables graceful I/O state freeze and EEPROM save sequence triggered by LLO 30 ms before RESET activation. |
| Medical Infusion Pump Controller | Smart Energy Meter MCU |
|
Use Scenario: Safety-critical reset management for infusion motor driver MCU operating from Li-ion and USB power paths. IC Role / Device Role / Timing Role: Ensures deterministic reset on power-up and brownout; WDI monitors motor control PWM line to detect firmware hang. Use Value: Watchdog timeout of 6.2 ms detects stuck PWM output within one control loop cycle, forcing safe motor stop. |
Use Scenario: Tamper-resistant metering SoC powered by supercapacitor backup during AC mains loss. IC Role / Device Role / Timing Role: Monitors 3.3V SoC rail (VCC), detects AC dropout via PFI on rectified input, and signals LLO to initiate flash write protection. Use Value: PFO falling edge triggers backup power switchover while LLO initiates secure data commit before VCC drops below 3.08V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3808G33DBVR | 3.3V reset threshold, 350-ms fixed timeout, no LLO or PFI; SOT-23-6 package. | Lacks low-line warning and auxiliary supply monitoring; suited for basic reset-only use cases. | Select when only primary VCC reset is required and board space is constrained (SOT-23 vs VSSOP-10). |
| MAX6816EUT+T | 3.08V reset, 200-ms timeout, no watchdog or PFI; SOT-23-6, ±2% threshold accuracy over temp. | No early-warning output or power-fail comparator; higher threshold tolerance reduces margin in 3.3V systems. | Choose for cost-sensitive designs where LLO/PFI functionality is omitted and extended temperature validation is not required. |
Compared with TPS3808G33DBVR and MAX6816EUT+T, the LM3710XQMM-308/NOPB delivers unique integration of reset, power-fail, low-line, and watchdog functions in a single VSSOP-10 device - reducing component count and enabling predictive fault response not possible with basic supervisors.
Availability
LM3710XQMM-308/NOPB is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC controllers, medical infusion pumps, and smart energy meters requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LM3710XQMM-308/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 specializing in analog, embedded processing, and connectivity technologies, with decades of experience in high-reliability power management and supervisory ICs.
The LM3710XQMM-308/NOPB belongs to TI's microprocessor supervisory product line, designed specifically for deterministic power monitoring in safety-critical embedded systems where coordinated reset, early warning, and fault detection are mandatory.
FAQ
What is the reset threshold voltage of the LM3710XQMM-308/NOPB?
The LM3710XQMM-308/NOPB has a factory-programmed reset threshold of 3.08V with ±0.5% accuracy at 25°C and ±2% over −40°C to +85°C. This precise value targets 3.3V supply rails and eliminates calibration components. The LM3710XQMM-308/NOPB does not support user-adjustable thresholds - it is a fixed-voltage variant in the LM3710 family.
Does the LM3710XQMM-308/NOPB support watchdog timer functionality?
Yes, the LM3710XQMM-308/NOPB includes a factory-programmed watchdog timer with 6.2 ms timeout (E-code variant), monitored via the WDI pin. It resets the internal counter on each logic transition and asserts RESET if no activity occurs for >6.2 ms. The LM3710XQMM-308/NOPB does not allow runtime adjustment of this timeout period.
What is the function of the LLO pin on the LM3710XQMM-308/NOPB?
The LLO (Low-Line Output) pin on the LM3710XQMM-308/NOPB is an open-drain output that goes low when VCC falls below 1.02 × VRST (≈3.14V), providing early warning of imminent power failure. It is intended for connection to a µP's NMI input and features 0.0032 × VRST hysteresis to prevent chatter. This function is exclusive to the LM3710XQMM-308/NOPB and not present in basic reset ICs.
Can the LM3710XQMM-308/NOPB monitor a secondary power supply?
Yes, the LM3710XQMM-308/NOPB includes a dedicated PFI (Power-Fail Input) pin with a fixed 1.225V internal reference. By connecting an external resistor divider from a secondary supply (e.g., 5V or battery rail) to PFI, the LM3710XQMM-308/NOPB generates a corresponding PFO logic-low signal when that supply drops below the threshold - enabling independent monitoring of multiple rails with one IC.
What package type and footprint does the LM3710XQMM-308/NOPB use?
The LM3710XQMM-308/NOPB is supplied in a VSSOP-10 (DGS) package: 3.0 mm × 3.0 mm body, 0.5 mm pin pitch, 1.1 mm maximum height, with pin 1 marked by a dot. Its land pattern follows JEDEC MO-187 BA variation and requires non-solder-mask-defined (NSMD) copper pads per TI design guidelines. This footprint is incompatible with SOIC-8 or DSBGA variants of the LM3710 family.
LM3710XQMM-308/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:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 3.08V
- Output:
- Push-Pull, Totem Pole
- 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
LM3710XQMM-308/NOPB FAQ
1.How can I place an order for LM3710XQMM-308/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3710XQMM-308/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 LM3710XQMM-308/NOPB reliable?
The price and inventory of LM3710XQMM-308/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM3710XQMM-308/NOPB is usually 5 days.
3.What payment methods are accepted for LM3710XQMM-308/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3710XQMM-308/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM3710XQMM-308/NOPB?
LM3710XQMM-308/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3710XQMM-308/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 LM3710XQMM-308/NOPB?
For technical support, including LM3710XQMM-308/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3710XQMM-308/NOPB requirements.
6.How does Aetrix verify that LM3710XQMM-308/NOPB is sourced from the original manufacturer or authorized distributors?
All LM3710XQMM-308/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 LM3710XQMM-308/NOPB meets industry standards.
7.What is the process for return or replacement of LM3710XQMM-308/NOPB?
All LM3710XQMM-308/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM3710XQMM-308/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 LM3710XQMM-308/NOPB part is unused and in its original packaging.
Return procedure for LM3710XQMM-308/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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