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Texas Instruments LM3704XCMM-263/NOPB
- Part No.:
- LM3704XCMM-263/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LM3704XCMM-263/NOPB.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 10VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,366
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Product details
Overview
LM3704XCMM-263/NOPB from Texas Instruments is a microprocessor supervisory IC that monitors VCC supply voltage, provides power-fail warning via PFI input, asserts active-low RESET during brownout/power-up/down, and delivers early low-line warning via LLO output. It features 3.08V reset threshold, 200ms reset timeout, totem-pole RESET output, and operates down to 1.0V VCC. Used in embedded controllers for reliable power sequencing and fault detection.
For engineers reviewing the LM3704XCMM-263/NOPB datasheet, LM3704XCMM-263/NOPB pinout, LM3704XCMM-263/NOPB application, or LM3704XCMM-263/NOPB equivalent, this page delivers verified specifications, MSOP-10 package mapping, functional role in power fail detection, and validated alternative parts for industrial and automotive supervisory designs.
Technical Context
The LM3704XCMM-263/NOPB integrates three independent comparators: one for VCC monitoring (3.08V threshold), one for external PFI input (1.225V reference), and one for low-line detection (1.02×VRST). Its internal timer enforces a fixed 200ms reset timeout after VCC recovery or MR release.
It supports manual reset via MR input with 1.225V threshold and 56kΩ internal pull-up, guarantees RESET assertion down to VCC = 1.0V, and delivers 28µA typical supply current. The totem-pole RESET output drives high/low actively without external pull-up.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.08V ±0.5% at 25°C; ensures precise brownout detection for 3.3V systems. |
| Reset Timeout Period | 200ms; guarantees minimum reset pulse width for reliable µP initialization. |
| VCC Operating Range | 1.0V to 5.5V; enables operation during deep brownout and compatibility with wide-input supplies. |
| Supply Current | 28µA typical; minimizes quiescent load in battery-backed or low-power systems. |
| PFO Input Threshold | 1.225V ±25mV; allows accurate external supply monitoring using simple resistor divider. |
| LLO Threshold | 1.02 × VRST (≈3.14V); triggers early warning ~60mV above reset threshold for NMI generation. |
| MR Input Threshold | 1.225V; supports direct connection to logic outputs or additional supply rails for multi-rail supervision. |
Pinout & Package
LM3704XCMM-263/NOPB is packaged in MSOP-10 (NS Package Number MUB10A), 3.0mm × 3.0mm × 1.0mm body, with exposed pad option not specified. Pin numbering follows standard counter-clockwise orientation from lower-left corner (Pin 1).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC (Pin 1) | Power supply input | Primary monitored rail; RESET asserted when falling below 3.08V; device functional down to 1.0V. |
| MR (Pin 2) | Manual reset input | Active-low trigger; internally pulled up to VCC via 56kΩ; asserts RESET when <1.225V for >25µs. |
| PFI (Pin 3) | Power-fail comparator input | Monitors external supply; compared to 1.225V reference; drives PFO low when below threshold. |
| NC (Pin 4) | No connect | Not bonded; must be left floating per datasheet. |
| GND (Pin 5) | Ground reference | Common return for all analog and digital functions; required for accurate threshold referencing. |
| NC (Pin 6) | No connect | Not bonded; must be left floating. |
| LLO (Pin 7) | Low-line output | Active-low early warning signal; goes low when VCC falls to 1.02×VRST; used for NMI generation. |
| PFO (Pin 8) | Power-fail output | Active-low open-drain output indicating external supply failure; requires external pull-up. |
| NC (Pin 9) | No connect (test only) | Factory test pin; must remain unconnected in application. |
| RESET (Pin 10) | Reset logic output | Active-low totem-pole output; guaranteed low until VCC >3.08V for 200ms; no external pull-up needed. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-programmed 200ms reset timeout | Eliminates need for external RC timing components; ensures consistent reset duration across temperature. |
| ±0.5% reset threshold accuracy at 25°C | Reduces design margin requirements for 3.3V systems; avoids unnecessary over-specification of supply rails. |
| Dedicated PFI input with 1.225V reference | Enables independent monitoring of unregulated or auxiliary supplies without sharing VCC path. |
| Low-line output (LLO) at 1.02×VRST | Provides deterministic early warning window (~60mV) before reset activation for controlled shutdown. |
| 28µA typical supply current | Supports always-on supervision in energy-constrained applications such as portable instrumentation. |
Applications
| Industrial PLC Controller | Automotive Body Control Module |
|---|---|
|
Use Scenario: Monitors main 5V supply and backup 3.3V rail in programmable logic controller with non-volatile configuration storage. IC Role / Device Role / Timing Role: Supervises power integrity, asserts RESET on brownout, and triggers LLO to initiate EEPROM save before power loss. Use Value: Prevents corrupted firmware state by enabling deterministic save-and-shutdown sequence within 200ms window. |
Use Scenario: Embedded in door module controlling window lift, mirror adjustment, and lighting functions powered from vehicle battery. IC Role / Device Role / Timing Role: Detects battery sag during cranking (<10V) and asserts RESET to prevent MCU lockup; uses PFI to monitor ignition-switched 12V rail. Use Value: Maintains functional safety by ensuring MCU restarts cleanly after engine start transient without requiring external watchdog. |
| Medical Infusion Pump | Smart Energy Meter |
|
Use Scenario: Supervises dual-supply system (3.3V MCU + 5V motor driver) in battery-operated infusion pump with alarm and data logging. IC Role / Device Role / Timing Role: Generates LLO-triggered NMI to halt motor and log last-dose timestamp when main supply drops below 3.14V. Use Value: Meets IEC 60601-1 requirement for safe shutdown by guaranteeing response before critical voltage collapse. |
Use Scenario: Installed in utility-grade meter with RTC, flash memory, and isolated RS-485 interface operating from AC-derived 3.3V rail. IC Role / Device Role / Timing Role: Uses MR input tied to tamper switch to force immediate RESET and secure erase on enclosure breach. Use Value: Enables certified anti-tampering behavior by coupling mechanical event directly to supervised reset path. |
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; open-drain RESET; no LLO or PFI inputs. | Lacks low-line warning and external power-fail monitoring; suitable only for single-rail reset-only use cases. | Select when only basic reset functionality is needed and board space permits SOT-23-6 footprint. |
| MAX6326UT31D3+ | 3.08V threshold; 200ms timeout; push-pull RESET; includes watchdog timer; no PFI/LLO. | Provides watchdog capability but omits dedicated power-fail comparator and early-warning output. | Choose when system-level software reliability requires periodic watchdog refresh alongside reset supervision. |
Compared with LM3704XCMM-263/NOPB, TPS3808G33DBVR offers smaller footprint but sacrifices PFI and LLO functionality, while MAX6326UT31D3+ adds watchdog capability at the cost of losing dual-comparator supervision - making LM3704XCMM-263/NOPB uniquely suited for multi-threshold, multi-output power integrity monitoring.
Availability
LM3704XCMM-263/NOPB is available at Aetrix Electronics and suitable for industrial PLC controllers, automotive body control modules, medical infusion pumps, and smart energy meters requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LM3704XCMM-263/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 specializing in analog and embedded processing technologies, with leadership in power management, signal chain, and microcontroller solutions.
The LM3704 series belongs to TI's precision supervisory IC portfolio, designed specifically for robust power monitoring in safety-critical embedded systems where deterministic reset timing and multi-rail fault detection are essential.
FAQ
What is the reset timeout period for LM3704XCMM-263/NOPB?
The LM3704XCMM-263/NOPB has a factory-programmed reset timeout period of 200ms. This duration is guaranteed over the full operating temperature range (−40°C to +85°C) and ensures the RESET output remains asserted for at least 200ms after VCC rises above the 3.08V threshold or after the MR input is released. This fixed delay eliminates timing uncertainty in µP initialization sequences.
Does LM3704XCMM-263/NOPB support operation below 1.8V VCC?
Yes, LM3704XCMM-263/NOPB is fully functional down to VCC = 1.0V. Its RESET output is guaranteed active (low) for VCC ≥ 1.0V during brownout conditions, and internal comparators remain operational throughout this range. This capability supports supervision in ultra-low-voltage systems and deep brownout recovery scenarios not covered by many competing supervisors.
Can LM3704XCMM-263/NOPB monitor a 12V supply?
Yes, LM3704XCMM-263/NOPB can monitor a 12V supply using its PFI input. By connecting a resistor divider (e.g., 100kΩ + 12.4kΩ) between 12V and GND, the PFI node is scaled to 1.225V at the trip point. The PFI input draws only ±75nA, introducing negligible error. This method enables independent supervision of higher-voltage rails without affecting VCC monitoring.
What is the function of the LLO pin on LM3704XCMM-263/NOPB?
The LLO (Low-Line Output) pin on LM3704XCMM-263/NOPB is an active-low comparator output that triggers when VCC falls to 1.02 × VRST (≈3.14V for 3.08V threshold). It provides early warning ~60mV before RESET activation, allowing time-critical actions like saving volatile data or asserting NMI. Its propagation delay is 20µs at 1mV/µs slew rate, ensuring timely response.
Is LM3704XCMM-263/NOPB pin-compatible with other LM3704 variants?
Yes, LM3704XCMM-263/NOPB shares identical MSOP-10 pinout with all LM3704 variants (e.g., LM3704XBMM-232, LM3704XDMM-220). Pin functions - VCC, MR, PFI, GND, LLO, PFO, RESET - are fixed across the family. Only reset threshold voltage and timeout period differ between part numbers; no PCB redesign is required when substituting within the LM3704 series.
LM3704XCMM-263/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:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.63V
- 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:
- 10-VSSOP
LM3704XCMM-263/NOPB FAQ
1.How can I place an order for LM3704XCMM-263/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3704XCMM-263/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 LM3704XCMM-263/NOPB reliable?
The price and inventory of LM3704XCMM-263/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM3704XCMM-263/NOPB is usually 5 days.
3.What payment methods are accepted for LM3704XCMM-263/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3704XCMM-263/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM3704XCMM-263/NOPB?
LM3704XCMM-263/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3704XCMM-263/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 LM3704XCMM-263/NOPB?
For technical support, including LM3704XCMM-263/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3704XCMM-263/NOPB requirements.
6.How does Aetrix verify that LM3704XCMM-263/NOPB is sourced from the original manufacturer or authorized distributors?
All LM3704XCMM-263/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 LM3704XCMM-263/NOPB meets industry standards.
7.What is the process for return or replacement of LM3704XCMM-263/NOPB?
All LM3704XCMM-263/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM3704XCMM-263/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 LM3704XCMM-263/NOPB part is unused and in its original packaging.
Return procedure for LM3704XCMM-263/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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