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Texas Instruments LM3710XQTP-308/NOPB
- Part No.:
- LM3710XQTP-308/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- 9-VFBGA
- Datasheet:
-
LM3710XQTP-308/NOPB.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 9USMD
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
LM3710XQTP-308/NOPB from Texas Instruments is a microprocessor supervisory IC with 3.08V factory-programmed reset threshold, active-low RESET output, power-fail comparator (PFI/PFO), low-line warning (LLO), manual reset (MR), and watchdog timer (WDI). It operates from 1.0V to 5.5V VCC, asserts reset down to 1.0V, and draws only 28 µA typical supply current. It is used in embedded controllers and automotive systems for reliable power-up/down and brownout protection.
For engineers reviewing the LM3710XQTP-308/NOPB datasheet, LM3710XQTP-308/NOPB pinout, LM3710XQTP-308/NOPB application, or LM3710XQTP-308/NOPB equivalent, key selection considerations include its fixed 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 power-fail interrupt generation.
Technical Context
The LM3710XQTP-308/NOPB integrates five independent monitoring functions: precision reset detection (3.08V ±0.5% at 25°C), separate 1.225V power-fail comparator, low-line output triggered at 1.02×VRST with 0.0032×VRST hysteresis, debounced manual reset input with 56 kΩ internal pull-up, and watchdog timer with programmable timeout periods (e.g., 6.2 ms, 102 ms, 1600 ms, or 25.6 s).
Its architecture features dual open-drain outputs (PFO, LLO) and one totem-pole or open-drain RESET (LM3710 variant uses active-low RESET), all guaranteed functional down to VCC = 1.0V. The device requires no external components for basic operation and supports system-level fault handling via NMI generation from LLO and external fault injection via PFI.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.08V ±0.5% at 25°C; ensures deterministic reset assertion during 3.3V supply brownout |
| VCC Operating Range | 1.0V to 5.5V; enables operation during deep brownout and compatibility with 1.2V–5V logic domains |
| Supply Current | 28 µA typical; minimizes quiescent load on battery-backed or energy-constrained systems |
| PFI Threshold | 1.225V ±25 mV; provides stable reference for external voltage divider monitoring unregulated supplies |
| LLO Threshold | 1.02 × VRST (≈3.14V at 3.08V); triggers non-maskable interrupt 2% above reset point for early warning |
| Reset Timeout Period | Programmable: 1.4 ms / 28 ms / 200 ms / 1600 ms; prevents premature release during slow-rising VCC |
| Watchdog Timeout | Programmable: 6.2 ms / 102 ms / 1600 ms / 25.6 s; supports short-cycle firmware lockup detection or long-duration supervision |
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) | Power supply input | Primary supply rail connection; powers internal comparators, timer, and outputs |
| 2 (MR) | Manual reset input | Active-low input with 1.225V threshold and 56 kΩ internal pull-up; initiates reset when pulled below VMRT |
| 3 (PFI) | Power-fail comparator input | Monitors external voltage divider; asserts PFO low when input falls below 1.225V |
| 4 (WDI) | Watchdog input | High-impedance transition detector; resets internal timer on each edge; timeout triggers RESET |
| 5 (GND) | Ground reference | Common return path for all analog and digital circuitry; must be low-impedance |
| 6,9 (NC) | No-connect terminals | Factory test pins; must remain unconnected in application circuit |
| 7 (LLO) | Low-line output | Open-drain early-warning signal; goes low when VCC drops to 1.02×VRST for NMI generation |
| 8 (PFO) | Power-fail output | Open-drain flag; indicates PFI < 1.225V; used for backup supply enable or system shutdown sequencing |
| 10 (RESET) | Reset logic output | Active-low totem-pole output; held low during power-up, brownout, MR assertion, or WDI timeout |
Key Features
| Feature | Design Value |
|---|---|
| Factory-programmed 3.08V reset threshold | Eliminates external resistor network; guarantees ±0.5% accuracy at 25°C for 3.3V systems |
| Separate 1.225V PFI comparator | Enables independent monitoring of raw battery or unregulated supply without loading main VCC rail |
| LLO output at 1.02×VRST | Provides 2% headroom before reset activation, allowing time for controlled software response to impending failure |
| Debounced MR input with internal 56 kΩ pull-up | Supports direct push-button interface without external RC network; reduces BOM count and layout area |
| Watchdog timeout programmability | Four factory-set periods (6.2 ms to 25.6 s) allow matching to specific firmware execution cycles or safety timing requirements |
Applications
| Industrial PLC Controller | Automotive Body Control Module |
|---|---|
Use Scenario: Monitors 3.3V microcontroller supply and 12V battery-derived 5V rail in a temperature-variable under-hood environment. IC Role / Device Role / Timing Role: Supervisory IC providing power-on reset, brownout detection, and early low-line warning to trigger graceful shutdown before VCC collapse. Use Value: Prevents corrupted EEPROM writes and undefined MCU state during engine cranking-induced voltage sag using guaranteed reset assertion down to 1.0V VCC. | Use Scenario: Embedded in door module controlling window lift, mirror adjustment, and lighting functions powered by vehicle battery. IC Role / Device Role / Timing Role: Dual-supply monitor (VCC + PFI) with LLO-driven NMI for real-time response to battery voltage drop below 11.5V. Use Value: Enables immediate firmware save-to-EEPROM and safe actuator de-energization before loss of control, meeting ISO 16750-2 transient immunity requirements. |
| Medical Infusion Pump | Smart Energy Meter |
Use Scenario: Ensures deterministic restart after AC power interruption or battery switchover in Class II medical device with isolated 3.3V logic rail. IC Role / Device Role / Timing Role: Primary reset supervisor with watchdog timer verifying motor control loop execution every 100 ms. Use Value: Meets IEC 62304 SOUP requirements by detecting firmware hang and forcing hardware reset within defined safety interval. | Use Scenario: Monitors both 3.3V MCU supply and 2.5V RTC/backup supply in utility meter with supercapacitor hold-up. IC Role / Device Role / Timing Role: Power-fail comparator (PFI) triggers data flush to FRAM while LLO warns of imminent VCC dropout. Use Value: Guarantees zero-data-loss during grid outage by initiating critical memory write sequence ≥20 ms before reset activation. |
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; 360 nA quiescent current; no LLO or PFI outputs | Lacks early warning (LLO) and auxiliary supply monitoring (PFI); suited for simpler single-rail systems | Select when ultra-low IQ dominates design priority and dual-supply monitoring is unnecessary |
| MAX6369KA29+T | 3.08V reset; includes push-button debounced MR but no watchdog timer or PFI input | Missing WDI and PFI functionality limits use in systems requiring activity monitoring or secondary supply tracking | Choose when manual reset robustness is critical but watchdog and auxiliary monitoring are omitted |
Compared with TPS3808G33DBVR and MAX6369KA29+T, the LM3710XQTP-308/NOPB uniquely combines 3.08V precision reset, integrated PFI/LLO/WDI functions, and 1.0V operational floor-enabling comprehensive power supervision in space-constrained industrial and automotive nodes where multi-rail awareness and firmware lockup recovery are mandatory.
Availability
LM3710XQTP-308/NOPB is available at Aetrix Electronics and suitable for embedded controllers, automotive body electronics, and medical infusion pumps requiring stable component supply, long-term manufacturability, and AEC-Q200-aligned reliability.
Supply support for LM3710XQTP-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 company designing analog, embedded processing, and connectivity technologies for industrial, automotive, and personal electronics markets.
The LM3710XQTP-308/NOPB belongs to TI's microprocessor supervisory product line, engineered specifically for deterministic power monitoring in battery-backed and multi-rail systems where early fault detection, manual reset, and watchdog supervision must coexist in minimal footprint.
FAQ
What is the reset threshold voltage of the LM3710XQTP-308/NOPB?
The LM3710XQTP-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 value is laser-trimmed during production and applies specifically to the LM3710XQTP-308/NOPB variant, ensuring compatibility with standard 3.3V supply rails without external calibration.
Does the LM3710XQTP-308/NOPB support watchdog timer functionality?
Yes, the LM3710XQTP-308/NOPB includes a watchdog timer with four factory-programmed timeout periods: 6.2 ms, 102 ms, 1600 ms, or 25.6 s. The WDI pin monitors transitions on a microprocessor output line; absence of activity for the selected timeout period triggers the RESET output, providing hardware-level recovery from firmware lockup.
What is the purpose of the LLO pin on the LM3710XQTP-308/NOPB?
The LLO (Low-Line Output) pin on the LM3710XQTP-308/NOPB is an open-drain early warning signal that goes low when VCC falls to 1.02×VRST (≈3.14V for the 3.08V variant). Its design intent is to generate a non-maskable interrupt (NMI) to the microprocessor, enabling preemptive actions such as data save or controlled shutdown before reset assertion occurs.
Can the LM3710XQTP-308/NOPB monitor a secondary supply voltage?
Yes, the LM3710XQTP-308/NOPB can monitor a secondary supply using its dedicated PFI (Power-Fail Input) pin, which compares an external voltage divider output against an internal 1.225V reference. When the divided voltage drops below this threshold, the PFO pin asserts low-enabling independent supervision of battery, unregulated DC, or auxiliary rails without affecting VCC monitoring.
What package type is used for the LM3710XQTP-308/NOPB?
The LM3710XQTP-308/NOPB is supplied in a VSSOP-10 (DGS) package: 3.0 mm × 3.0 mm body size, 0.5 mm pin pitch, 1.1 mm maximum height, with tin (SN) lead finish and Moisture Sensitivity Level 1 rating. This thermally and electrically optimized package supports high-density PCB layouts in automotive and industrial applications.
LM3710XQTP-308/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 9-VFBGA
- 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:
- 9-DSBGA
LM3710XQTP-308/NOPB FAQ
1.How can I place an order for LM3710XQTP-308/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3710XQTP-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 LM3710XQTP-308/NOPB reliable?
The price and inventory of LM3710XQTP-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 LM3710XQTP-308/NOPB is usually 5 days.
3.What payment methods are accepted for LM3710XQTP-308/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3710XQTP-308/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM3710XQTP-308/NOPB?
LM3710XQTP-308/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3710XQTP-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 LM3710XQTP-308/NOPB?
For technical support, including LM3710XQTP-308/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3710XQTP-308/NOPB requirements.
6.How does Aetrix verify that LM3710XQTP-308/NOPB is sourced from the original manufacturer or authorized distributors?
All LM3710XQTP-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 LM3710XQTP-308/NOPB meets industry standards.
7.What is the process for return or replacement of LM3710XQTP-308/NOPB?
All LM3710XQTP-308/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM3710XQTP-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 LM3710XQTP-308/NOPB part is unused and in its original packaging.
Return procedure for LM3710XQTP-308/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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