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Texas Instruments LM3710XQMM-308
- Part No.:
- LM3710XQMM-308
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LM3710XQMM-308.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 10VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,489
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Product details
Overview
LM3710XQMM-308 from Texas Instruments is a microprocessor supervisory IC in VSSOP-10 package, providing 3.08V reset threshold, manual reset input (MR), power-fail comparator (PFI/PFO), low-line output (LLO), and watchdog timer (WDI). It asserts active-low RESET down to 1.0V VCC and supports embedded systems requiring reliable power monitoring and early brownout warning.
For engineers reviewing the LM3710XQMM-308 datasheet, LM3710XQMM-308 pinout, LM3710XQMM-308 application, or LM3710XQMM-308 equivalent, key selection considerations include its factory-programmed 3.08V reset threshold, ±0.5% accuracy at room temperature, 28 µA supply current, VSSOP-10 footprint, and integrated LLO for non-maskable interrupt generation during voltage sag.
Technical Context
The LM3710XQMM-308 integrates five independent monitoring functions: precision reset detection (3.08V threshold with hysteresis), manual reset assertion via MR input (1.225V threshold, 56 kΩ internal pull-up), power-fail warning via PFI comparator (1.225V reference), early low-line warning via LLO (1.02×VRST threshold), and watchdog timeout supervision on WDI transitions.
All outputs-RESET, PFO, and LLO-are open-drain with guaranteed sink capability up to 3.2 mA at 4.5V, and the device operates across −40°C to +85°C with VCC range 1.0V–5.5V. Reset timeout period is factory-programmed; for LM3710XQMM-308, it is the "E" variant: 1–2 ms typical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.08V ±0.5% at 25°C; ensures reliable reset assertion during 3.3V system brownout |
| Supply Current | 28 µA typical; enables ultra-low-power operation in battery-backed or always-on monitoring |
| Reset Timeout Period | 1.4 ms typical (E variant); guarantees minimum reset pulse width for µP initialization |
| LLO Threshold | 1.02 × VRST = 3.14V; triggers early warning ~60 mV above reset threshold for NMI generation |
| PFI Threshold | 1.225V fixed; allows external resistor divider to monitor secondary supply or unregulated rail |
| Operating Voltage Range | 1.0V to 5.5V; supports reset assertion even during deep brownout down to 1.0V VCC |
| Output Type | Open-drain RESET, PFO, LLO; enables wired-OR configuration and flexible pull-up voltage selection |
Pinout & Package
VSSOP-10 package (DGS), 3.0 mm × 3.0 mm × 1.1 mm max height, exposed pad not present, RoHS-compliant tin-silver (SN) finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Main power supply input; powers all internal comparators, timers, and outputs |
| 2 | MR | Manual reset input; active-low, 1.225V threshold, internally pulled up to VCC via 56 kΩ |
| 3 | PFI | Power-fail comparator input; referenced to 1.225V internal bandgap; used for secondary supply monitoring |
| 4 | WDI | Watchdog input; high-impedance transition detector; reset triggered if no edge occurs within timeout period |
| 5 | GND | Analog/digital ground reference for all internal circuitry and output drivers |
| 6,9 | NC | No-connect pins; factory test only; must be left floating in application |
| 7 | LLO | Low-line output; open-drain, active-low signal asserted when VCC falls below 1.02×VRST |
| 8 | PFO | Power-fail output; open-drain, active-low signal asserted when PFI < 1.225V |
| 10 | RESET | Active-low reset output; open-drain, asserted during power-up, brownout, MR activation, or WDI timeout |
Key Features
| Feature | Design Value |
|---|---|
| Factory-programmed 3.08V reset threshold | Eliminates external resistor network; reduces BOM count and layout area for 3.3V systems |
| Integrated low-line output (LLO) | Provides early warning at 3.14V for 3.3V rails, enabling NMI-driven graceful shutdown before reset assertion |
| Internal 56 kΩ MR pull-up | Permits direct connection to pushbutton without external components; simplifies manual reset implementation |
| 28 µA quiescent current | Supports >10-year battery life in coin-cell–powered backup supervisors or IoT endpoint monitors |
| Reset valid down to 1.0V VCC | Ensures deterministic behavior during deep undervoltage events where µP may still retain state |
Applications
| Industrial PLC Controller | Automotive Body Control Module |
|---|---|
Use Scenario: Monitors 3.3V I/O rail in programmable logic controller during mains fluctuation or battery backup switchover. IC Role / Device Role / Timing Role: Supervisory IC asserting RESET to halt CPU execution and LLO to trigger firmware-initiated data save before brownout. Use Value: Prevents corrupted EEPROM writes by initiating controlled shutdown 60 mV before hard reset, using LLO as NMI source. | Use Scenario: Watches main 5V supply in body control unit with secondary monitoring of 12V battery via PFI divider. IC Role / Device Role / Timing Role: Dual-supply supervisor: RESET guards MCU core; PFO signals battery sag to wake CAN transceiver for low-power alert broadcast. Use Value: Enables predictive maintenance alerts by detecting 12V drop 10–15 ms before 5V brownout, using independent PFI comparator. |
| Medical Infusion Pump | Network Edge Router |
Use Scenario: Ensures safe shutdown during AC/DC adapter failure or depleted backup battery in Class II medical device. IC Role / Device Role / Timing Role: Safety-critical supervisor asserting RESET and disabling motor drivers while LLO triggers audio alarm and display freeze. Use Value: Meets IEC 62304 SOUP requirements by guaranteeing reset assertion down to 1.0V VCC and providing redundant voltage monitoring paths. | Use Scenario: Monitors 3.3V PHY and 1.8V core rails in fanless enterprise switch operating 24/7 in temperature-variable environments. IC Role / Device Role / Timing Role: Dual-rail supervisor: RESET holds CPU during 3.3V sag; WDI detects PHY lockup and forces recovery without host intervention. Use Value: Reduces unplanned downtime by auto-recovering from PHY firmware hangs via WDI-triggered reset, independent of host software stack. |
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; higher ICC (1.3 µA) | Lacks low-line warning and secondary supply monitoring; suitable only for basic reset-only use cases | Select when only reset functionality is needed and 3.3V threshold suffices; not interchangeable due to missing LLO/PFI |
| MAX6326UR31D3+T | 3.08V reset, 140-ms min timeout, no WDI or PFI; push-pull RESET output | Missing watchdog and power-fail inputs; requires external components for early warning or dual-supply monitoring | Choose for cost-sensitive designs where watchdog and PFI are unnecessary; incompatible pinout and feature set |
Compared with TPS3808G33DBVR and MAX6326UR31D3+T, the LM3710XQMM-308 uniquely integrates LLO, PFI, and WDI in a single VSSOP-10 package with 3.08V threshold-enabling full-featured supervision without external components or layout compromise.
Availability
LM3710XQMM-308 is available at Aetrix Electronics and suitable for industrial PLC controllers, automotive body control modules, medical infusion pumps, and network edge routers requiring stable component supply, long-term lifecycle support, and guaranteed RoHS compliance.
Supply support for LM3710XQMM-308 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 company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The LM3710 series belongs to TI's microprocessor supervisory product line, designed specifically for systems requiring multi-function voltage monitoring-including reset, manual reset, power-fail warning, early low-line detection, and watchdog supervision-in minimal footprint.
FAQ
What is the reset threshold voltage of the LM3710XQMM-308?
The LM3710XQMM-308 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 threshold ensures reliable reset assertion for standard 3.3V digital systems during power-up, brownout, or undervoltage conditions, and is laser-trimmed at wafer test to meet specification without external components.
Does the LM3710XQMM-308 support watchdog timer functionality?
Yes, the LM3710XQMM-308 includes a watchdog timer function monitored via the WDI pin. When no transition is detected on WDI for the programmed timeout period (1.4 ms for the "E" variant), the device asserts RESET. WDI is a high-impedance input compatible with CMOS logic levels, and the timeout is factory-set-no external capacitor or resistor is required to configure the watchdog interval in the LM3710XQMM-308.
What is the purpose of the LLO pin on the LM3710XQMM-308?
The LLO (Low-Line Output) pin on the LM3710XQMM-308 is an open-drain output that goes low when VCC falls below 1.02 × VRST (≈3.14V for this part), providing early power-fail warning 60 mV above the reset threshold. This enables the host µP to execute critical tasks-such as saving state or signaling upstream systems-before RESET is asserted, and is commonly connected to a non-maskable interrupt (NMI) input.
Can the LM3710XQMM-308 monitor a secondary power supply?
Yes, the LM3710XQMM-308 can monitor a secondary supply using the PFI (Power-Fail Input) pin, which compares an external voltage against a precise 1.225V internal reference. By connecting a resistor divider from the secondary rail to PFI, designers can configure early warning for any supply-such as a 12V battery or 5V analog rail-without affecting the primary VCC monitoring path or reset behavior of the LM3710XQMM-308.
What package type and footprint does the LM3710XQMM-308 use?
The LM3710XQMM-308 uses the VSSOP-10 (DGS) package: 3.0 mm × 3.0 mm × 1.1 mm max height, 0.5 mm lead pitch, with pin 1 marked in quadrant Q1 on tape-and-reel. It is RoHS-compliant with tin-silver (SN) lead finish and MSL Level-1 rating, supporting standard reflow profiles. The package drawing is TI's DGS0010A, and land pattern follows IPC-7351 recommendations for small-outline packages.
LM3710XQMM-308 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:
- Obsolete
- 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 FAQ
1.How can I place an order for LM3710XQMM-308 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3710XQMM-308 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 reliable?
The price and inventory of LM3710XQMM-308 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 is usually 5 days.
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LM3710XQMM-308 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3710XQMM-308 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?
For technical support, including LM3710XQMM-308 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3710XQMM-308 requirements.
6.How does Aetrix verify that LM3710XQMM-308 is sourced from the original manufacturer or authorized distributors?
All LM3710XQMM-308 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 meets industry standards.
7.What is the process for return or replacement of LM3710XQMM-308?
All LM3710XQMM-308 units undergo pre-shipment inspection (PSI). If there is an issue with LM3710XQMM-308, 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 part is unused and in its original packaging.
Return procedure for LM3710XQMM-308:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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