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Texas Instruments LM3710XNMMX-470
- Part No.:
- LM3710XNMMX-470
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LM3710XNMMX-470.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 10VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,801
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Product details
Overview
LM3710XNMMX-470 from Texas Instruments is a microprocessor supervisory IC with 3.08V reset threshold, active-low RESET output, manual reset input (MR), power-fail comparator (PFI/PFO), low-line warning output (LLO), and watchdog timer (WDI). It operates from 1.0V to 5.5V VCC, asserts reset down to 1.0V, and draws only 28 µA supply current - used for reliable power monitoring in embedded controllers and automotive systems.
For engineers reviewing the LM3710XNMMX-470 datasheet, LM3710XNMMX-470 pinout, LM3710XNMMX-470 application, or LM3710XNMMX-470 equivalent, key selection criteria include its factory-programmed 3.08V reset threshold, VSSOP-10 package, ±0.5% room-temperature accuracy, 1.225V PFI reference, and LLO threshold at 1.02×VRST for early brownout detection.
Technical Context
The LM3710XNMMX-470 integrates five independent monitoring functions: precision voltage supervisor (3.08V threshold), manual reset with 1.225V threshold and internal 56 kΩ pull-up, separate 1.225V power-fail comparator, low-line output triggered at 1.02×VRST with 0.0032×VRST hysteresis, and watchdog timer with programmable timeout periods (e.g., 6.2 ms, 102 ms, 1600 ms).
Its RESET output remains valid down to VCC = 1.0V and holds for a factory-configured timeout period (tRP) after VCC rises above threshold or MR releases; the LLO output provides non-maskable interrupt capability during early supply droop, while PFO enables external supply monitoring via resistor divider.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.08V ±0.5% at 25°C; ensures deterministic reset assertion during 3.3V system brownout. |
| VCC Operating Range | 1.0V to 5.5V; supports operation through deep brownout and full 3.3V/5V supply range. |
| Supply Current | 28 µA typical; enables battery-backed or ultra-low-power embedded supervision. |
| Reset Timeout Period | Factory-programmed; LM3710XNMMX-470 uses 6.2 ms (code "E"), ensuring sufficient processor initialization time. |
| PFI Threshold | 1.225V ±25 mV; allows precise external supply monitoring using standard resistor dividers. |
| LLO Threshold | 1.02 × VRST (≈3.14V at 3.08V); triggers early warning ~60 mV above reset point for NMI generation. |
| Watchdog Timeout | 6.2 ms (code "E"); matches short-cycle firmware watchdog requirements without external timing components. |
Pinout & Package
VSSOP-10 package (DGS), 3.0 mm × 3.0 mm × 1.1 mm height, moisture sensitivity level 1, lead-free (Sn) finish, tape-and-reel packaging (1000 pcs/reel).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Power supply input | Primary supply rail (1.0–5.5V); powers all internal comparators and logic. |
| GND | Ground reference | Common return for all analog and digital circuitry; two pins ensure low-impedance path. |
| RESET | Active-low reset output | Open-drain/totem-pole configurable; drives µP reset pin low during fault conditions. |
| MR | Manual reset input | Debounced input with 1.225V threshold and internal 56 kΩ pull-up; initiates reset when pulled low ≥25 µs. |
| PFI | Power-fail comparator input | Monitors external supply via resistor divider; asserts PFO when input falls below 1.225V. |
| PFO | Power-fail logic output | Active-low open-drain output signaling external supply failure prior to main VCC brownout. |
| LLO | Low-line logic output | Active-low output asserting ~60 mV before reset threshold; used for NMI or system alert. |
| WDI | Watchdog input | High-impedance transition monitor; resets internal timer on each edge; timeout triggers RESET. |
| NC | No-connect | Pin 6 and Pin 9 are factory test-only; must be left floating in application circuits. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-programmed reset threshold | 3.08V with ±0.5% accuracy at 25°C eliminates external resistor network and calibration effort. |
| Integrated low-line output (LLO) | Triggers at 1.02×VRST with built-in hysteresis, enabling early brownout warning without extra comparator. |
| Dual independent comparators | Separate PFI (1.225V reference) and VCC monitor allow concurrent tracking of main and auxiliary supplies. |
| Manual reset with internal pull-up | 56 kΩ internal MR pull-up and 1.225V threshold simplify pushbutton interface and reduce BOM count. |
| Watchdog timer with fixed timeout | 6.2 ms watchdog period (code "E") provides deterministic firmware lockup detection without external RC. |
Applications
| Industrial PLC Controller | Automotive Body Control Module |
|---|---|
|
Use Scenario: Monitors 3.3V microcontroller supply and 12V battery-derived 5V rail in harsh temperature environments. IC Role / Device Role / Timing Role: Supervisory IC providing power-on reset, brownout detection, and early low-line warning to prevent corrupted EEPROM writes. Use Value: LLO output triggers NMI to save critical state before VCC drops below 3.08V; PFO monitors backup supply independently. |
Use Scenario: Ensures safe shutdown and diagnostic logging during vehicle ignition cycle transitions and battery voltage sag. IC Role / Device Role / Timing Role: Dual-supply supervisor asserting RESET on main MCU and generating PFO-based fault flag for CAN gateway. Use Value: MR input accepts vehicle ignition switch signal; watchdog guards against firmware hang during CAN message processing. |
| Medical Infusion Pump | Smart Energy Meter |
|
Use Scenario: Maintains fail-safe operation during AC/DC adapter dropout or Li-ion battery discharge below 3.2V. IC Role / Device Role / Timing Role: Power integrity guardian enabling controlled motor stop, valve closure, and data flush before power loss. Use Value: RESET asserted down to 1.0V VCC ensures reset validity even during rapid battery collapse; 28 µA quiescent current extends backup runtime. |
Use Scenario: Supervises metrology SoC and isolated RS-485 transceiver rails in utility-grade metering hardware. IC Role / Device Role / Timing Role: Dual-threshold supervisor delivering both immediate reset (3.08V) and predictive alert (LLO at 3.14V) for firmware recovery. Use Value: Factory-programmed 6.2 ms tRP aligns with metrology ASIC boot sequence; PFI monitors auxiliary 3.3V rail for communication subsystem. |
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 fixed reset threshold; 350 ms default timeout; no LLO output; requires external capacitor for adjustable delay. | Lacks low-line warning and dual-comparator architecture; suited for simpler single-rail reset-only use cases. | Select when only basic 3.3V reset is required and early warning functionality is unnecessary. |
| MAX6326UT31D3+ | 3.08V threshold; 140 ms reset timeout; no watchdog or PFI; SOT-23-5 package; higher 12 µA ICC. | Missing PFI, WDI, and LLO functions; limited to basic reset generation without auxiliary monitoring. | Choose for space-constrained designs where only reset assertion is needed and multi-function integration is not required. |
Compared with TPS3808G33DBVR and MAX6326UT31D3+, the LM3710XNMMX-470 delivers integrated early-warning (LLO), external-supply monitoring (PFI/PFO), and watchdog (WDI) in a single VSSOP-10 device - reducing component count and PCB area versus discrete solutions.
Availability
LM3710XNMMX-470 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 LM3710XNMMX-470 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 specializing in analog, embedded processing, and high-reliability silicon for industrial, automotive, and communications markets.
The LM3710XNMMX-470 belongs to TI's microprocessor supervisory circuit family, designed specifically for robust power monitoring in battery-backed and automotive systems where deterministic reset behavior and early fault detection are essential.
FAQ
What is the reset threshold voltage of the LM3710XNMMX-470?
The LM3710XNMMX-470 has a factory-programmed reset threshold of 3.08V with ±0.5% accuracy at room temperature and ±2% over −40°C to +85°C. This value is laser-trimmed during production and does not require external components. The LM3710XNMMX-470 maintains valid reset assertion down to VCC = 1.0V, ensuring reliability during severe brownout events.
Does the LM3710XNMMX-470 support watchdog timer functionality?
Yes, the LM3710XNMMX-470 includes a watchdog timer with WDI input that monitors microprocessor output transitions. Its timeout period is factory-programmed to 6.2 ms (code "E"). If no edge is detected on WDI within this interval, the device asserts RESET. The LM3710XNMMX-470 requires no external timing components and supports seamless integration into firmware watchdog routines.
How does the low-line output (LLO) function in the LM3710XNMMX-470?
The LLO output of the LM3710XNMMX-470 goes low when VCC falls below 1.02 × VRST (≈3.14V for 3.08V threshold), providing early warning ~60 mV before reset activation. It features 0.0032 × VRST hysteresis to prevent chatter. In practice, the LM3710XNMMX-470 uses LLO to generate a non-maskable interrupt (NMI) for last-chance data save or controlled shutdown before full reset occurs.
What is the purpose of the PFI and PFO pins on the LM3710XNMMX-470?
The PFI pin on the LM3710XNMMX-470 accepts an external voltage (e.g., from a resistor divider on a 12V rail) and compares it to an internal 1.225V reference. When PFI drops below this threshold, the PFO pin pulls low - enabling independent monitoring of auxiliary supplies. Unlike the main VCC supervisor, the LM3710XNMMX-470's PFI/PFO path is fully isolated and can trigger alerts before the primary supply fails.
Is the LM3710XNMMX-470 pin-compatible with other devices in the LM3710/LM3711 family?
Yes, the LM3710XNMMX-470 shares identical VSSOP-10 pinout and footprint with all LM3710 variants (e.g., LM3710XKMM-463, LM3710XQMM-308) and LM3711 devices. All share the same pin assignments for VCC, GND, RESET/RESET, MR, PFI, PFO, LLO, WDI, and NC. However, functional differences exist - the LM3710XNMMX-470 provides active-low RESET and 6.2 ms tRP, whereas LM3711 offers active-high RESET and different timeout options.
LM3710XNMMX-470 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:
- 4.7V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 1ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-VSSOP
LM3710XNMMX-470 FAQ
1.How can I place an order for LM3710XNMMX-470 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3710XNMMX-470 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 LM3710XNMMX-470 reliable?
The price and inventory of LM3710XNMMX-470 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM3710XNMMX-470 is usually 5 days.
3.What payment methods are accepted for LM3710XNMMX-470?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3710XNMMX-470 transactions.
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4.How is shipping managed for LM3710XNMMX-470?
LM3710XNMMX-470 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3710XNMMX-470 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 LM3710XNMMX-470?
For technical support, including LM3710XNMMX-470 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3710XNMMX-470 requirements.
6.How does Aetrix verify that LM3710XNMMX-470 is sourced from the original manufacturer or authorized distributors?
All LM3710XNMMX-470 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 LM3710XNMMX-470 meets industry standards.
7.What is the process for return or replacement of LM3710XNMMX-470?
All LM3710XNMMX-470 units undergo pre-shipment inspection (PSI). If there is an issue with LM3710XNMMX-470, 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 LM3710XNMMX-470 part is unused and in its original packaging.
Return procedure for LM3710XNMMX-470:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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