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Texas Instruments LM3710YQMM-232
- Part No.:
- LM3710YQMM-232
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LM3710YQMM-232.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 10VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,570
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Product details
Overview
LM3710YQMM-232 from Texas Instruments is a microprocessor supervisory IC in VSSOP-10 package, providing precision 3.08V reset threshold, power-fail detection (1.225V PFI threshold), low-line warning output (1.02×VRST), manual reset input with 56 kΩ internal pull-up, and watchdog timer with factory-programmable timeout. It operates from 1.0V to 5.5V VCC and supports critical µP power monitoring in automotive and industrial embedded systems.
For engineers reviewing the LM3710YQMM-232 datasheet, LM3710YQMM-232 pinout, LM3710YQMM-232 application, or LM3710YQMM-232 equivalent, key selection considerations include its active-low RESET output, ±0.5% reset threshold accuracy at room temperature, 28 µA supply current, VSSOP-10 footprint compatibility, and integrated early-warning LLO functionality for non-maskable interrupt generation.
Technical Context
The LM3710YQMM-232 integrates five independent monitoring functions: a precision voltage supervisor with 3.08V reset threshold and hysteresis (0.0032×VRST), a dedicated 1.225V power-fail comparator (PFI/PFO), a low-line output (LLO) triggered at 1.02×VRST, a debounced manual reset input (MR) with 1.225V threshold and 25 µs minimum pulse width, and a watchdog timer (WDI) with factory-configured timeout periods ranging from 6.2 ms to 38.4 s.
Its architecture separates critical paths: the reset logic ensures valid operation down to VCC = 1.0V; the PFI comparator operates independently of VCC monitoring; the LLO provides early brownout warning before reset assertion; and the WDI input features high-impedance sensing with no external components required. All outputs are open-drain or totem-pole configurable per variant, with LM3710YQMM-232 delivering active-low RESET.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.08V ±0.5% at 25°C; ensures reliable system initialization during 3.3V rail brownout |
| VCC Operating Range | 1.0V to 5.5V; supports operation through deep brownout and battery-backed scenarios |
| Supply Current | 28 µA typical; enables ultra-low-power supervision in always-on subsystems |
| Power-Fail Threshold | 1.225V fixed; allows external resistor divider to monitor auxiliary supplies or raw battery voltage |
| LLO Threshold | 1.02×VRST (≈3.14V); triggers NMI 2% above reset point for preemptive firmware response |
| Watchdog Timeout | Factory-programmed; LM3710YQMM-232 uses "E" code = 6.2 ms nominal timeout |
| Reset Timeout Period | 1–2240 ms selectable; "E" code = 1.4 ms typical duration after VCC rise or MR release |
Pinout & Package
VSSOP-10 (DGS) package, 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 |
|---|---|---|
| 1 | VIN1 / MR | Manual reset input with 56 kΩ internal pull-up; asserts reset when pulled below 1.225V |
| 2 | GND | Ground reference for all analog and digital circuitry |
| 3 | GND | Second ground terminal for noise isolation and thermal dissipation |
| 4 | NMI | Low-line output (LLO) signal; open-drain, sinks current when VCC drops below 1.02×VRST |
| 5 | VCC | Main power supply input; powers internal comparators, timer, and output drivers |
| 6 | PFI | Power-fail comparator input; referenced to internal 1.225V bandgap, accepts external voltage divider |
| 7 | MR | Redundant MR input pin (same node as Pin 1); supports dual-point connection for noise immunity |
| 8 | VCC | Second VCC terminal for improved supply decoupling and reduced IR drop |
| 9 | PP | Power-fail output (PFO); open-drain, goes low when PFI < 1.225V |
| 10 | PFO | Reset output (RESET); active-low totem-pole, asserted during power-up, brownout, or MR activation |
Key Features
| Feature | Design Value |
|---|---|
| No external components required | Integrated 56 kΩ MR pull-up, 1.225V PFI reference, and factory-programmed timing eliminate discrete R/C networks |
| Early power-fail warning | LLO output triggers at 1.02×VRST - 20 mV above reset threshold - enabling firmware recovery before reset assertion |
| Reset validity down to 1.0V VCC | Guaranteed RESET assertion and timing integrity even during severe brownout conditions |
| Independent PFI comparator | Dedicated 1.225V reference path allows monitoring of secondary supplies (e.g., battery, 5V rail) without affecting main VCC supervision |
| Factory-programmable timeouts | WDI and RESET timeout periods set at wafer test; LM3710YQMM-232 uses E-code (6.2 ms WDI, 1.4 ms tRP) |
Applications
| Industrial PLC Power Monitoring | Automotive Body Control Module |
|---|---|
Use Scenario: Supervises 3.3V microcontroller supply in programmable logic controller with backup battery and CAN interface. IC Role / Device Role / Timing Role: Monitors VCC for brownout, asserts RESET to halt execution, triggers LLO to initiate graceful shutdown sequence, and watches WDI for firmware lockup detection. Use Value: Prevents corrupted I/O state during undervoltage by ensuring deterministic reset before VCC falls below 3.08V, while LLO provides 20 mV headroom for firmware-controlled save operations. | Use Scenario: Embedded in body control unit managing door locks, lighting, and sensor interfaces powered from vehicle battery (9–16V) via local 3.3V LDO. IC Role / Device Role / Timing Role: Uses PFI to monitor raw battery voltage via resistor divider, generating PFO warning before main 3.3V rail collapses; RESET holds MCU in safe state during cranking dips. Use Value: Enables predictive fault logging via PFO edge detection 10–15 ms before brownout, improving diagnostic coverage without adding external comparators or timers. |
| Medical Infusion Pump Controller | Smart Energy Meter MCU Supervision |
Use Scenario: Ensures fail-safe operation of ARM Cortex-M based pump controller where motor actuation must halt on power anomaly. IC Role / Device Role / Timing Role: Provides MR-initiated emergency stop, monitors VCC for AC/DC adapter dropout, and uses WDI to detect firmware hang during dose calculation loop. Use Value: Guarantees sub-20 µs MR-to-RESET delay and 1.4 ms reset hold time - meeting IEC 62304 Class C timing requirements for safety-critical resets. | Use Scenario: Supervises metrology SoC in ANSI C12.20-compliant electricity meter with tamper-detection circuitry and real-time clock. IC Role / Device Role / Timing Role: Uses dual GND pins and separate VCC terminals to minimize noise coupling into precision ADC reference; LLO feeds NMI to preserve RTC state during brownout. Use Value: Achieves ±0.5% reset threshold accuracy over temperature, eliminating calibration drift that could cause false resets in wide-temperature field deployments. |
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 LLO output; requires external pull-up on MR; 1.8 µA quiescent current | Lacks early-warning capability; suited for simpler reset-only use cases without NMI requirement | Select when lowest power is critical and LLO/NMI functionality is unnecessary |
| MAX6326UT31D3+ | 3.08V reset; no PFI input; no watchdog; push-pull RESET; ±1.5% threshold accuracy over temp | Missing power-fail monitoring and WDI - limited to basic VCC supervision only | Choose for cost-sensitive designs where PFI and watchdog are not required |
Compared with TPS3808G33DBVR and MAX6326UT31D3+, the LM3710YQMM-232 uniquely integrates LLO, PFI, and factory-programmed watchdog in a single VSSOP-10 package - enabling full-featured supervision without external components or accuracy trade-offs.
Availability
LM3710YQMM-232 is available at Aetrix Electronics and suitable for industrial PLC power monitoring, automotive body control modules, medical infusion pump controllers, smart energy meter MCU supervision, and critical µP power monitoring requiring stable component supply across extended temperature ranges.
Supply support for LM3710YQMM-232 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 and embedded processing chips for industrial, automotive, and communications applications.
The LM3710 series belongs to TI's microprocessor supervisory product line, engineered specifically for robust, multi-function power monitoring in safety-critical embedded systems where simultaneous reset, power-fail warning, low-line detection, and watchdog functionality are required in minimal footprint.
FAQ
What is the reset threshold voltage of the LM3710YQMM-232?
The LM3710YQMM-232 has a factory-set reset threshold voltage of 3.08V with ±0.5% accuracy at 25°C and ±2% over the full −40°C to +85°C operating range. This precise threshold ensures reliable reset assertion for 3.3V systems during brownout conditions, and the LM3710YQMM-232 maintains guaranteed operation down to VCC = 1.0V during reset assertion.
Does the LM3710YQMM-232 support manual reset functionality?
Yes, the LM3710YQMM-232 includes a dedicated manual reset (MR) input with a nominal 1.225V threshold and internal 56 kΩ pull-up resistor. When MR is pulled below 1.225V for ≥25 µs, the LM3710YQMM-232 asserts RESET after a 12 µs propagation delay. The LM3710YQMM-232 also provides dual MR pins (Pins 1 and 7) for enhanced noise immunity in electrically noisy environments.
What is the function of the LLO pin on the LM3710YQMM-232?
The LLO (Low-Line Output) pin on the LM3710YQMM-232 is an open-drain output that goes low when VCC falls below 1.02×VRST (≈3.14V for LM3710YQMM-232), providing early power-fail warning 20 mV above the reset threshold. This allows the host µP to execute a non-maskable interrupt (NMI) service routine for data preservation or controlled shutdown before RESET is asserted - a capability unique to the LM3710YQMM-232 among comparable supervisors.
How is the watchdog timeout configured on the LM3710YQMM-232?
The watchdog timeout on the LM3710YQMM-232 is factory-programmed and cannot be modified in-circuit. For LM3710YQMM-232, the WDI timeout period is coded as "E", corresponding to a nominal 6.2 ms timeout (range: 4.3–9.3 ms). This value is laser-trimmed during final test and is permanently fixed - ensuring consistent, predictable watchdog behavior without external timing components.
What package type and dimensions does the LM3710YQMM-232 use?
The LM3710YQMM-232 is packaged in a VSSOP-10 (DGS) outline measuring 3.0 mm × 3.0 mm × 1.1 mm maximum height, with 0.5 mm lead pitch. It features two GND and two VCC pins for improved thermal performance and noise rejection. The LM3710YQMM-232 is supplied in tape-and-reel format (1000 units per reel) with RoHS-compliant matte tin (Sn) lead finish and MSL Level-1 rating for unlimited floor life.
LM3710YQMM-232 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:
- 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 FAQ
1.How can I place an order for LM3710YQMM-232 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3710YQMM-232 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 reliable?
The price and inventory of LM3710YQMM-232 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 is usually 5 days.
3.What payment methods are accepted for LM3710YQMM-232?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3710YQMM-232 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM3710YQMM-232?
LM3710YQMM-232 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3710YQMM-232 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?
For technical support, including LM3710YQMM-232 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3710YQMM-232 requirements.
6.How does Aetrix verify that LM3710YQMM-232 is sourced from the original manufacturer or authorized distributors?
All LM3710YQMM-232 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 meets industry standards.
7.What is the process for return or replacement of LM3710YQMM-232?
All LM3710YQMM-232 units undergo pre-shipment inspection (PSI). If there is an issue with LM3710YQMM-232, 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 part is unused and in its original packaging.
Return procedure for LM3710YQMM-232:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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