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Texas Instruments LM3710YQMM-232/NOPB
- Part No.:
- LM3710YQMM-232/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LM3710YQMM-232/NOPB.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 10VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,435
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Product details
Overview
LM3710YQMM-232/NOPB from Texas Instruments is a microprocessor supervisory circuit in VSSOP-10 package, providing precision 3.08V reset threshold, 28 µA supply current, and integrated watchdog timer with factory-programmable timeout. It monitors VCC for power-up/brownout conditions, supports manual reset via MR input, and delivers early warning via LLO output at 1.02×VRST - used in automotive ECUs and industrial controllers requiring reliable power sequencing.
For engineers reviewing the LM3710YQMM-232/NOPB datasheet, LM3710YQMM-232/NOPB pinout, LM3710YQMM-232/NOPB application, or LM3710YQMM-232/NOPB equivalent, key selection criteria include its ±0.5% reset threshold accuracy at room temperature, reset assertion down to 1.0V VCC, PFI comparator with 1.225V internal reference, and compatibility with dual-supply monitoring architectures using external voltage dividers.
Technical Context
The LM3710YQMM-232/NOPB implements a dedicated analog reset comparator with hysteresis (0.0032×VRST), independent PFI comparator referenced to 1.225V, and low-line comparator triggering at 1.02×VRST. Its watchdog timer uses WDI edge detection with four factory-programmable timeout options (6.2 ms typical for this variant).
It features an open-drain RESET output with guaranteed operation down to VCC = 1.0V, internal 56 kΩ MR pull-up, and separate logic-level outputs: PFO (power-fail), LLO (early warning), and INT (non-maskable interrupt capability). All comparators operate over −40°C to +85°C with ±2% threshold accuracy across temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.08V ±0.5% at 25°C; ensures deterministic reset initiation during VCC brownout |
| Supply Current | 28 µA typical; enables long battery life in always-on monitoring applications |
| Reset Timeout Period | 1.4 ms typical; holds processor in reset long enough for stable clock and supply settling |
| Watchdog Timeout | 6.2 ms typical; detects microprocessor lockup on critical data lines without external timing components |
| LLO Threshold | 1.02×VRST (≈3.14V); provides non-maskable interrupt 2% above reset point for graceful shutdown |
| PFI Threshold | 1.225V fixed; allows monitoring of secondary supplies (e.g., raw battery) via external resistor divider |
| Operating Temp | −40°C to +85°C; qualified for under-hood automotive and industrial control environments |
Pinout & Package
VSSOP-10 (DGS) package: 3.0 mm × 3.0 mm body, 0.5 mm pitch, 1.1 mm max height, RoHS-compliant Sn lead finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Main power supply input (1.0–5.5V); powers all internal comparators and logic |
| 2 | MR | Manual reset input with 1.225V threshold and internal 56 kΩ pull-up; debounced for noise immunity |
| 3 | PFI | Power-fail comparator input; compared to 1.225V reference to monitor auxiliary supplies |
| 4 | WDI | Watchdog input; edge-triggered to reset counter on µP data line transitions |
| 5 | GND | Analog/digital ground reference for all comparators and outputs |
| 6,9 | NC | No-connect pins; factory test only; must be left floating |
| 7 | LLO | Low-line output; active-low open-drain signal asserting at 1.02×VRST for NMI generation |
| 8 | PFO | Power-fail output; active-low open-drain signal when PFI < 1.225V |
| 10 | RESET | Active-low open-drain reset output; asserted during power-up, brownout, or MR/WDT event |
Key Features
| Feature | Design Value |
|---|---|
| Factory-programmable watchdog timeout | Four standard options (6.2/102/1600/25600 ms); eliminates external RC timing components |
| Separate PFI comparator | Dedicated 1.225V reference enables independent monitoring of unregulated or backup supplies |
| Low-line output (LLO) | Triggers 2% above reset threshold to provide early warning before system failure |
| Reset valid down to 1.0V VCC | Ensures controlled shutdown even during deep brownout conditions |
| No external components required | Internal pull-up on MR, precision references, and hysteresis eliminate discrete BOM items |
Applications
| Automotive Engine Control Unit (ECU) | Industrial PLC I/O Module |
|---|---|
Use Scenario: Monitors 5V system rail and 12V battery supply in engine management systems where voltage transients occur during cranking or load dump. IC Role / Device Role / Timing Role: Supervisory circuit asserting RESET during VCC brownout and generating LLO-based NMI for firmware-initiated safe state entry before full power loss. Use Value: Prevents erratic ECU behavior during cold-cranking (VCC dip to 2.8V) by holding reset until stable 3.08V is restored, while LLO triggers diagnostic logging at 3.14V. | Use Scenario: Embedded controller powering isolated digital I/O banks with separate 3.3V logic and 24V field-side supplies. IC Role / Device Role / Timing Role: Dual-supply monitor using PFI to track 24V rail via resistor divider and VCC for 3.3V logic; asserts PFO to disable outputs before 3.3V drops below 3.08V. Use Value: Enables predictive fault handling: PFO goes low 15 ms before RESET, allowing PLC firmware to de-energize solenoids and save state before hard reset. |
| Medical Infusion Pump Controller | Smart Energy Meter MCU |
Use Scenario: Battery-backed microcontroller managing motor control and safety interlocks, requiring fail-safe shutdown on main supply degradation. IC Role / Device Role / Timing Role: Manual reset input (MR) tied to emergency stop button; WDI monitors heartbeat signal from safety co-processor. Use Value: MR initiates immediate reset with 12 µs delay and 25 µs pulse width guarantee; WDI timeout (6.2 ms) detects co-processor freeze without software intervention. | Use Scenario: AMI meter with real-time clock, metrology ASIC, and RF communication module powered from switched-mode supply. IC Role / Device Role / Timing Role: Primary supervisor for 3.3V metrology rail; LLO connected to µP NMI pin to trigger EEPROM save of energy registers during grid sag. Use Value: LLO threshold at 3.14V gives 60 ms warning before 3.08V reset, sufficient to complete 2KB register write to non-volatile memory before power collapse. |
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 PFI input; no LLO output; 1.8 µA quiescent current | Lacks early-warning capability and auxiliary supply monitoring; suited for single-rail systems only | Select when ultra-low power dominates over multi-supply flexibility |
| MAX6369KA29+T | 3.08V reset; includes push-button debounced MR but no watchdog timer; 12 µA supply current | Missing WDI functionality; requires external RC for manual reset timing; no PFI comparator | Select when watchdog supervision is unnecessary and cost-per-function is prioritized |
Compared with TPS3808G33DBVR and MAX6369KA29+T, the LM3710YQMM-232/NOPB uniquely integrates PFI monitoring, LLO early-warning, and programmable watchdog in one VSSOP-10 device - enabling compact, feature-complete supervision for dual-supply embedded systems without compromising on reset accuracy or temperature stability.
Availability
LM3710YQMM-232/NOPB is available at Aetrix Electronics and suitable for automotive engine control units, industrial PLC modules, and medical infusion pump controllers requiring stable component supply, long-term lifecycle support, and AEC-Q100-aligned reliability.
Supply support for LM3710YQMM-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 company designing analog ICs, embedded processors, and connectivity solutions for industrial, automotive, and consumer markets.
The LM3710 series belongs to TI's precision power-supervision product line, engineered specifically for high-reliability microprocessor monitoring in environments demanding accurate voltage thresholds, low-power operation, and multi-rail fault detection.
FAQ
What is the reset threshold voltage of the LM3710YQMM-232/NOPB?
The LM3710YQMM-232/NOPB has a factory-set reset threshold of 3.08V with ±0.5% accuracy at room temperature and ±2% over the full −40°C to +85°C operating range. This value is laser-trimmed during production and applies specifically to the LM3710YQMM-232/NOPB variant, as confirmed in the SNVS150E datasheet revision March 2013.
Does the LM3710YQMM-232/NOPB support watchdog timer functionality?
Yes, the LM3710YQMM-232/NOPB includes a watchdog timer with factory-programmable timeout periods. For this specific part number, the watchdog timeout is 6.2 ms typical (E/F/G/H option code), monitored via the WDI pin. The timer resets on each input transition and asserts RESET if no activity occurs within the timeout window.
What is the purpose of the LLO pin on the LM3710YQMM-232/NOPB?
The LLO (Low-Line Output) pin on the LM3710YQMM-232/NOPB is an open-drain output that goes low when VCC falls to 1.02×VRST (≈3.14V), providing early warning 2% above the 3.08V reset threshold. It is designed to drive a non-maskable interrupt (NMI) input on a microprocessor, enabling firmware to initiate controlled shutdown or data save before reset occurs.
Can the LM3710YQMM-232/NOPB monitor a second power supply besides VCC?
Yes, the LM3710YQMM-232/NOPB can monitor a second supply using the PFI (Power-Fail Input) pin, which compares an external voltage against an internal 1.225V reference. By connecting a resistor divider from the auxiliary supply to PFI, designers can configure early fault detection for rails such as battery voltage or unregulated inputs - independent of the VCC monitoring path.
What package type and footprint does the LM3710YQMM-232/NOPB use?
The LM3710YQMM-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 lead finish Sn and moisture sensitivity level (MSL) Level-1. Its land pattern follows JEDEC MO-187 BA and TI's DGS0010A outline, requiring NSMD pads and 0.125 mm stencil thickness for optimal solder paste release.
LM3710YQMM-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:
- Active
- 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
LM3710YQMM-232/NOPB FAQ
1.How can I place an order for LM3710YQMM-232/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3710YQMM-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 LM3710YQMM-232/NOPB reliable?
The price and inventory of LM3710YQMM-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 LM3710YQMM-232/NOPB is usually 5 days.
3.What payment methods are accepted for LM3710YQMM-232/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3710YQMM-232/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM3710YQMM-232/NOPB?
LM3710YQMM-232/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3710YQMM-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 LM3710YQMM-232/NOPB?
For technical support, including LM3710YQMM-232/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3710YQMM-232/NOPB requirements.
6.How does Aetrix verify that LM3710YQMM-232/NOPB is sourced from the original manufacturer or authorized distributors?
All LM3710YQMM-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 LM3710YQMM-232/NOPB meets industry standards.
7.What is the process for return or replacement of LM3710YQMM-232/NOPB?
All LM3710YQMM-232/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM3710YQMM-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 LM3710YQMM-232/NOPB part is unused and in its original packaging.
Return procedure for LM3710YQMM-232/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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