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Texas Instruments LM3704YCMM-232/NOPB
- Part No.:
- LM3704YCMM-232/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LM3704YCMM-232/NOPB.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 10VSSOP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
LM3704YCMM-232/NOPB from Texas Instruments is an open-drain microprocessor supervisory IC in MSOP-10 package, providing power-fail detection (1.225V PFI threshold), low-line warning output (VLLOT = 1.02 × VRST), manual reset input, and factory-programmed 200ms reset timeout. It asserts reset down to VCC = 1.0V and supports embedded controllers requiring early brownout warning and reliable power sequencing.
For engineers reviewing the LM3704YCMM-232/NOPB datasheet, LM3704YCMM-232/NOPB pinout, LM3704YCMM-232/NOPB application, or LM3704YCMM-232/NOPB equivalent, this device delivers precision supply monitoring with ±0.5% room-temperature reset threshold accuracy, 28 µA quiescent current, and dual independent comparators for system-level fault prediction and safe shutdown coordination.
Technical Context
The LM3704YCMM-232/NOPB integrates three independent voltage comparators: one for reset (3.08V threshold), one for power-fail warning (1.225V fixed reference on PFI), and one for low-line detection (VLLOT = 1.02 × VRST). Its open-drain RESET output enables wired-OR configuration and level-shifting flexibility across mixed-voltage systems.
Reset assertion is triggered by VCC falling below 3.08V, MR input pulled below 1.225V for >25 µs, or PFI dropping below 1.225V; all conditions guarantee RESET hold-down until VCC rises above threshold and 200ms timeout expires. LLO activates 2% above VRST to provide non-maskable interrupt signaling before reset engages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.08V ±0.5% at 25°C; ensures reliable CPU reset initiation at precise supply voltage drop point |
| Reset Timeout Period | 200ms factory-programmed; guarantees minimum reset pulse width for full microprocessor initialization |
| PFI Threshold | 1.225V ±25mV; enables accurate early warning of auxiliary supply failure via external divider |
| LLO Threshold | 1.02 × VRST (≈3.14V); triggers early non-maskable interrupt 2% above reset threshold for graceful shutdown |
| VCC Supply Current | 28 µA typical; minimizes standby power impact in battery-backed or energy-sensitive systems |
| Operating Voltage Range | 1.0V to 5.5V; supports reset assertion even during deep brownout, enabling fail-safe state capture |
| Output Type | Open-drain RESET; allows flexible pull-up selection, bus sharing, and voltage-level translation |
Pinout & Package
LM3704YCMM-232/NOPB is housed in a 10-pin MSOP package (NS Package Number MUB10A), 3.0mm × 3.0mm × 1.0mm, with exposed pad for thermal performance. Pin 1 is located at lower-left corner; pins numbered counter-clockwise.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Main power supply input; powers internal comparators, timer, and logic; valid from 1.0V |
| 2 | MR | Manual reset input; internally pulled up to ~56 kΩ; asserts reset when pulled below 1.225V |
| 3 | PFI | Power-fail comparator input; referenced to 1.225V internal bandgap; used for secondary supply monitoring |
| 4, 6 | NC | No-connect pins; must be left unconnected per datasheet; no internal connection |
| 5 | GND | Ground reference for all analog and digital circuitry; required for accurate threshold operation |
| 7 | LLO | Low-line output; open-drain active-low signal asserting at 1.02 × VRST for early NMI generation |
| 8 | PFO | Power-fail output; open-drain active-low signal asserting when PFI falls below 1.225V |
| 9 | NC | No-connect test pin; factory use only; must be left floating in application |
| 10 | RESET | Open-drain reset output; asserted low during power-up, brownout, or MR activation; holds for 200ms |
Key Features
| Feature | Design Value |
|---|---|
| Factory-programmed 200ms reset timeout | Eliminates need for external RC timing components and ensures consistent reset duration across production units |
| ±0.5% reset threshold accuracy at 25°C | Reduces margining requirements in precision power-rail monitoring applications such as industrial PLCs |
| Dedicated low-line output (LLO) | Provides deterministic early-warning interrupt 2% above reset threshold, enabling controlled firmware response before lockup |
| Independent power-fail comparator (PFI/PFO) | Allows monitoring of non-VCC rails (e.g., backup battery, analog supply) without affecting primary reset behavior |
| 1.0V minimum VCC operation | Guarantees reset assertion during severe brownout, preserving system state integrity in low-energy scenarios |
Applications
| Industrial PLC Power Monitoring | Medical Diagnostic Equipment |
|---|---|
Use Scenario: Monitoring 3.3V main supply in programmable logic controller with backup battery and isolated I/O. IC Role / Device Role / Timing Role: Supervisory IC providing synchronized reset, early low-line interrupt, and auxiliary supply fault detection. Use Value: Enables deterministic firmware recovery and pre-failure logging via LLO-triggered NMI before VCC drops below 3.08V. |
Use Scenario: Power supervision in portable ultrasound imaging unit with dual regulated supplies and battery backup. IC Role / Device Role / Timing Role: Dual-supply monitor using PFI for battery voltage tracking and LLO for host processor warning. Use Value: Prevents data corruption during battery swap by initiating controlled save-and-hibernate sequence upon LLO assertion. |
| Automotive Body Control Module | Smart Energy Meter |
Use Scenario: 5V rail supervision in CAN-connected body control module exposed to load-dump and cold-crank transients. IC Role / Device Role / Timing Role: Reset generator with manual reset capability and PFI-based alternator voltage monitoring. Use Value: Delivers robust reset under 1.0V cold-crank conditions while using PFO to flag alternator failure before system shutdown. |
Use Scenario: Tamper-resistant meter with real-time clock, EEPROM, and isolated communication interface. IC Role / Device Role / Timing Role: Primary supervisor ensuring RTC and memory integrity during AC mains interruption. Use Value: Uses LLO to trigger capacitor-backed RTC holdover and initiate secure flash write completion before VCC 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; 200ms timeout; push-pull output; no LLO or PFI | Lacks low-line warning and auxiliary supply monitoring; suited for simpler single-rail systems | Select when only basic reset functionality is needed and board space permits SOT-23-6 |
| MAX6369KA29+T | 3.08V reset; 200ms timeout; open-drain RESET; includes watchdog timer; no PFI/LLO | Offers watchdog capability but omits dedicated power-fail and early-warning outputs | Choose when system-level software supervision is required alongside hardware reset |
Compared with LM3704YCMM-232/NOPB, TPS3808G33DBVR simplifies design where auxiliary monitoring is unnecessary, while MAX6369KA29+T adds watchdog coverage at the cost of losing PFI/LLO diagnostics-making LM3704YCMM-232/NOPB uniquely suited for predictive power-failure architectures.
Availability
LM3704YCMM-232/NOPB is available at Aetrix Electronics and suitable for industrial PLCs, medical diagnostic equipment, automotive body control modules, and smart energy meters requiring stable component supply, long-term lifecycle support, and precision brownout management.
Supply support for LM3704YCMM-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 delivering analog and embedded processing solutions for industrial, automotive, and communications markets.
The LM3704 series belongs to TI's microprocessor supervisory product line, designed specifically for systems needing multi-level power-fail prediction, manual reset integration, and ultra-low-power operation in space-constrained applications.
FAQ
What is the reset threshold voltage of the LM3704YCMM-232/NOPB?
The LM3704YCMM-232/NOPB has a factory-set reset threshold of 3.08V with ±0.5% accuracy at 25°C and ±2% over −40°C to +85°C. This precise threshold ensures consistent reset activation across temperature and process variations, and is confirmed in the SNVS088D datasheet Electrical Characteristics table under VRST parameter.
Does the LM3704YCMM-232/NOPB support manual reset functionality?
Yes, the LM3704YCMM-232/NOPB includes a dedicated MR (Manual Reset) input pin with a nominal 1.225V threshold and internal 56 kΩ pull-up resistor. Pulling MR below 1.225V for longer than 25 µs initiates a full reset cycle, holding RESET low for the programmed 200ms timeout period - identical in behavior to power-loss-induced reset.
What is the function of the LLO pin on the LM3704YCMM-232/NOPB?
The LLO (Low-Line Output) pin on the LM3704YCMM-232/NOPB is an open-drain active-low signal that asserts when VCC falls to 1.02 × VRST (≈3.14V), providing early warning 2% above the reset threshold. It is intended to generate a non-maskable interrupt (NMI) for firmware-controlled shutdown, data save, or state preservation before reset occurs.
Can the LM3704YCMM-232/NOPB monitor a secondary power supply?
Yes, the LM3704YCMM-232/NOPB features a dedicated PFI (Power-Fail Input) pin referenced to a precise 1.225V internal bandgap. When an external voltage divider applies a scaled version of a secondary supply (e.g., battery or analog rail) to PFI, the PFO output goes low if that supply drops below threshold - enabling independent monitoring without affecting VCC reset behavior.
What package type and dimensions does the LM3704YCMM-232/NOPB use?
The LM3704YCMM-232/NOPB uses the MSOP-10 package (NS Package Number MUB10A), measuring 3.0mm × 3.0mm × 1.0mm with gull-wing leads. Pin 1 is at the lower-left corner; pin numbering proceeds counter-clockwise. The package includes an exposed thermal pad and requires standard MSOP reflow profiles per TI application notes.
LM3704YCMM-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
LM3704YCMM-232/NOPB FAQ
1.How can I place an order for LM3704YCMM-232/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3704YCMM-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 LM3704YCMM-232/NOPB reliable?
The price and inventory of LM3704YCMM-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 LM3704YCMM-232/NOPB is usually 5 days.
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We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3704YCMM-232/NOPB transactions.
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LM3704YCMM-232/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3704YCMM-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 LM3704YCMM-232/NOPB?
For technical support, including LM3704YCMM-232/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3704YCMM-232/NOPB requirements.
6.How does Aetrix verify that LM3704YCMM-232/NOPB is sourced from the original manufacturer or authorized distributors?
All LM3704YCMM-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 LM3704YCMM-232/NOPB meets industry standards.
7.What is the process for return or replacement of LM3704YCMM-232/NOPB?
All LM3704YCMM-232/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM3704YCMM-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 LM3704YCMM-232/NOPB part is unused and in its original packaging.
Return procedure for LM3704YCMM-232/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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