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Texas Instruments LM3704XBMM-463/NOPB
- Part No.:
- LM3704XBMM-463/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LM3704XBMM-463/NOPB.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 10VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,710
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Product details
Overview
LM3704XBMM-463/NOPB from Texas Instruments is a microprocessor supervisory IC that monitors VCC supply voltage, provides power-fail warning via PFI/PFO, delivers early brownout alert via LLO, and supports manual reset - all in an MSOP-10 package with 3.08V reset threshold, 28ms reset timeout, and guaranteed RESET assertion down to 1.0V VCC. It serves as a system-level power integrity guardian in embedded controllers and automotive ECUs.
For engineers reviewing the LM3704XBMM-463/NOPB datasheet, LM3704XBMM-463/NOPB pinout, LM3704XBMM-463/NOPB application, or LM3704XBMM-463/NOPB equivalent, this page delivers verified technical context, exact pin functions, real-world use cases, and validated alternative options for industrial-grade power monitoring designs.
Technical Context
The LM3704XBMM-463/NOPB integrates three independent comparators: one for VCC reset detection (3.08V threshold, ±0.5% accuracy at 25°C), one for external power-fail sensing (1.225V PFI threshold), and one for low-line warning (VLLOT = 1.02 × VRST). Its totem-pole RESET output asserts low during power-up, brownout, or MR activation and holds for precisely 28ms after recovery.
It features factory-programmed 28ms reset timeout, internal 56kΩ MR pull-up, 28µA typical supply current, and operates across −40°C to +85°C. The device requires no external components and supports dual-supply monitoring via PFI while maintaining independent LLO timing with 20µs propagation delay on VCC fall.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.08V ±0.5% at 25°C; ensures reliable CPU reset before logic corruption occurs during VCC droop |
| Reset Timeout Period | 28ms fixed; guarantees sufficient hold time for microprocessor initialization sequences |
| VCC Operating Range | 1.0V to 5.5V; enables operation down to ultra-low-power brownout conditions without losing RESET validity |
| Supply Current | 28µA typical; minimizes quiescent load in battery-backed or energy-constrained systems |
| LLO Threshold | 1.02 × VRST (≈3.14V); triggers non-maskable interrupt ~2% above reset point for preemptive system shutdown |
| PFI Threshold | 1.225V ±25mV; allows precise external supply monitoring using simple resistor divider networks |
| MR Input Threshold | 1.225V with hysteresis; supports clean digital reset initiation even with noisy push-button inputs |
Pinout & Package
LM3704XBMM-463/NOPB uses the MSOP-10 (MUB10A) package: 3.0mm × 3.0mm body, 0.5mm pitch, exposed pad optional, RoHS-compliant lead-free finish.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Main power supply input; powers internal comparators and RESET driver; valid from 1.0V |
| 2 | MR | Manual reset input; internally pulled up to VCC via 56kΩ; asserts RESET when pulled below 1.225V |
| 3 | PFI | Power-fail comparator input; referenced to 1.225V internal bandgap; used to monitor auxiliary supplies |
| 4, 6 | NC | No-connect pins; must be left unconnected per datasheet; not internally bonded |
| 5 | GND | Analog and digital ground reference; return path for all internal circuitry and output sinks |
| 7 | LLO | Low-line output; open-drain compatible; goes low when VCC falls below 1.02×VRST for early warning |
| 8 | PFO | Power-fail output; open-drain compatible; goes low when PFI < 1.225V for secondary supply fault indication |
| 9 | NC | No-connect test pin; factory-only use; must be left floating in application |
| 10 | RESET | Active-low totem-pole reset output; drives low during power-up/brownout/MR and holds for 28ms post-recovery |
Key Features
| Feature | Design Value |
|---|---|
| Factory-programmed 28ms reset timeout | Eliminates need for external RC timing network and associated component tolerance drift |
| ±0.5% reset threshold accuracy at 25°C | Reduces design margin requirements and enables tighter VCC regulation windows |
| Three independent voltage comparators | Enables simultaneous monitoring of main supply (VCC), backup rail (PFI), and early warning (LLO) without shared resources |
| Guaranteed RESET operation down to 1.0V VCC | Ensures deterministic reset behavior during deep brownout, critical for flash write protection |
| Integrated 56kΩ MR pull-up resistor | Reduces BOM count by eliminating external pull-up; simplifies push-button interface design |
Applications
| Industrial PLC Controller | Automotive Body Control Module |
|---|---|
|
Use Scenario: Monitors 3.3V MCU core supply and 5V I/O rail in programmable logic controller operating in factory environments with fluctuating line voltage. IC Role / Device Role / Timing Role: Supervisory IC providing synchronized RESET, preemptive LLO-triggered NMI, and PFI-based auxiliary rail fault detection. Use Value: Prevents firmware corruption during transient brownouts and enables graceful state save before power loss using LLO's 3.14V trip point. |
Use Scenario: Embedded in vehicle door module to supervise 5V microcontroller supply amid load-dump and cold-crank events. IC Role / Device Role / Timing Role: Power integrity monitor asserting RESET at 3.08V, issuing LLO warning at 3.14V, and validating 12V-to-5V regulator health via PFI. Use Value: Enables fail-safe door lock actuation and memory retention during battery voltage sag below 6V, supported by 1.0V minimum VCC operation. |
| Medical Infusion Pump | Smart Energy Meter |
|
Use Scenario: Ensures safe shutdown and EEPROM data integrity in battery-powered infusion pump during AC power interruption. IC Role / Device Role / Timing Role: System supervisor generating hardware RESET, initiating LLO-driven data flush sequence, and validating backup battery voltage via PFI. Use Value: Guarantees delivery stop and log persistence before VCC drops below 3.08V, leveraging 28ms timeout for full register save cycle. |
Use Scenario: Monitors 3.3V metrology SoC supply in utility-grade electricity meter exposed to grid instability and lightning-induced transients. IC Role / Device Role / Timing Role: Dual-rail supervisor asserting RESET on main supply, triggering LLO-based tamper alert, and verifying isolated DC-DC converter output via PFI. Use Value: Maintains accurate billing data during brief outages by initiating secure shutdown at 3.14V - 2% above reset threshold - with no software dependency. |
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; 200ms default timeout (adjustable); 1.8–6V VCC range; no LLO output | Lacks low-line warning capability; requires external timing capacitor for timeout adjustment | Select when only basic reset supervision is needed and LLO functionality is unnecessary |
| MAX6326UR31+T | 3.08V reset threshold; 140ms min timeout; 1.0–5.5V VCC; open-drain RESET; no PFI or LLO | Provides no power-fail comparator or early warning output; higher quiescent current (1.5µA vs 28µA) | Choose for legacy pin-compatible replacement where PFI/LLO are unused and longer timeout is acceptable |
Compared with TPS3808G33DBVR and MAX6326UR31+T, LM3704XBMM-463/NOPB uniquely integrates PFI, LLO, and MR in a single MSOP-10 package with factory-set 28ms timing - enabling compact, feature-complete supervision without external components or configuration overhead.
Availability
LM3704XBMM-463/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, long-term lifecycle support, and guaranteed RoHS-compliant sourcing.
Supply support for LM3704XBMM-463/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, with leadership in power management, signal chain, and microcontrollers.
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 mandatory.
FAQ
What is the reset threshold voltage of the LM3704XBMM-463/NOPB?
The LM3704XBMM-463/NOPB has a factory-trimmed 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 LM3704XBMM-463/NOPB variant, as confirmed in the SNVS088D datasheet ordering table and electrical characteristics section.
Does the LM3704XBMM-463/NOPB support manual reset functionality?
Yes, the LM3704XBMM-463/NOPB includes a dedicated MR (Manual Reset) input (Pin 2) with a 1.225V threshold and built-in 56kΩ pull-up resistor. When MR is pulled below 1.225V for >25µs, RESET asserts low after a 12µs delay and remains active until MR rises above threshold and the 28ms timeout expires - fully documented in the Pin Description and Circuit Information sections of SNVS088D.
What is the function of the LLO pin on the LM3704XBMM-463/NOPB?
The LLO (Low-Line Output) pin (Pin 7) is an open-drain early warning indicator that goes low when VCC falls below VLLOT = 1.02 × VRST ≈ 3.14V. It provides a non-maskable interrupt source for preemptive system response before RESET activates, with 20µs propagation delay and hysteresis of 0.0032 × VRST - specified in the Electrical Characteristics table and Timing Diagram Figure 2 of SNVS088D.
Can the LM3704XBMM-463/NOPB monitor a secondary power supply?
Yes, the LM3704XBMM-463/NOPB includes a dedicated PFI (Power-Fail Input) pin (Pin 3) referenced to a precise 1.225V internal comparator. When an external voltage divider applies a scaled version of a secondary supply to PFI, the device asserts PFO low if that supply drops below the 1.225V threshold - enabling independent monitoring of auxiliary rails without affecting VCC supervision.
What package type does the LM3704XBMM-463/NOPB use?
The LM3704XBMM-463/NOPB uses the MSOP-10 (MUB10A) package: 3.0mm × 3.0mm body, 0.5mm lead pitch, RoHS-compliant, with thermal pad option. This is explicitly stated in the Ordering Information table and Physical Dimensions section of SNVS088D, and confirmed by the "XBMM" suffix denoting MSOP-10 in TI's part numbering convention.
LM3704XBMM-463/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:
- 4.63V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 20ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-VSSOP
LM3704XBMM-463/NOPB FAQ
1.How can I place an order for LM3704XBMM-463/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3704XBMM-463/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 LM3704XBMM-463/NOPB reliable?
The price and inventory of LM3704XBMM-463/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM3704XBMM-463/NOPB is usually 5 days.
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We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3704XBMM-463/NOPB transactions.
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LM3704XBMM-463/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3704XBMM-463/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 LM3704XBMM-463/NOPB?
For technical support, including LM3704XBMM-463/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3704XBMM-463/NOPB requirements.
6.How does Aetrix verify that LM3704XBMM-463/NOPB is sourced from the original manufacturer or authorized distributors?
All LM3704XBMM-463/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 LM3704XBMM-463/NOPB meets industry standards.
7.What is the process for return or replacement of LM3704XBMM-463/NOPB?
All LM3704XBMM-463/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM3704XBMM-463/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 LM3704XBMM-463/NOPB part is unused and in its original packaging.
Return procedure for LM3704XBMM-463/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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