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Texas Instruments LM3704YCMM-308/NOPB
- Part No.:
- LM3704YCMM-308/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LM3704YCMM-308/NOPB.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 10VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,147
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Product details
Overview
LM3704YCMM-308/NOPB from Texas Instruments is a voltage supervisor IC with 3.08 V reset threshold, ±0.5% accuracy at 25°C, 200 ms reset timeout, open-drain RESET output, and integrated power-fail (PFI/PFO) and low-line (LLO) comparators. It monitors VCC in embedded microprocessor systems to prevent code execution errors during brownout or power-up.
For engineers reviewing the LM3704YCMM-308/NOPB datasheet, LM3704YCMM-308/NOPB pinout, LM3704YCMM-308/NOPB application, or LM3704YCMM-308/NOPB equivalent, key selection criteria include its 3.08 V fixed reset threshold, dual independent comparator inputs (PFI and MR), LLO early-warning interrupt capability, and VSSOP-10 package compatibility with space-constrained industrial and automotive control boards.
Technical Context
The LM3704YCMM-308/NOPB integrates three independent comparators: a precision reset comparator (3.08 V threshold, ±2% over –40°C to +85°C), a manual-reset input comparator (1.225 V threshold), and a power-fail input comparator (1.225 V reference). Its open-drain RESET output asserts low for 200 ms after VCC recovery or MR release.
It features a dedicated low-line output (LLO) that triggers at 1.02 × VRST (≈3.14 V) with 0.0032 × VRST hysteresis, enabling non-maskable interrupt generation before full reset activation. All comparators operate with 28 µA typical supply current and require no external components for basic supervision.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.08 V ±0.5% at 25°C; ensures reliable µP reset initiation when main supply falls below nominal 3.3 V rail. |
| Reset Timeout Period | 200 ms typ.; guarantees sufficient hold time for processor initialization after power recovery. |
| Supply Current | 28 µA typ. at 25°C; enables long battery life in always-on monitoring applications. |
| PFI Threshold | 1.225 V ±0.025 V; supports configurable upstream supply monitoring via external resistor divider. |
| LLO Threshold | 1.02 × VRST (≈3.14 V); provides early warning interrupt 50–100 mV above reset point for graceful shutdown. |
| MR Input Threshold | 1.225 V with 56 kΩ internal pullup; allows direct connection to logic-level pushbutton or digital signal without external bias. |
| Output Type | Open-drain RESET; enables wired-OR configuration and flexible voltage-level translation in mixed-rail systems. |
Pinout & Package
VSSOP-10 (DGS) package, 3.00 mm × 3.00 mm body size, 0.5 mm pitch, moisture sensitivity level 1 (260°C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VCC | Power supply input | Primary supply rail (1 V to 5.5 V); powers all internal comparators and logic. |
| 2 MR | Manual-reset input | Active-low trigger; asserts RESET when pulled below 1.225 V for >25 µs. |
| 3 PFI | Power-fail comparator input | Monitors secondary supply via external divider; drives PFO low when input <1.225 V. |
| 4 NC | No connection | Unbonded pad; must be left floating per TI design. |
| 5 GND | Ground reference | Common return path for all analog and digital functions; requires low-impedance PCB connection. |
| 6 NC | No connection | Unbonded pad; must be left floating per TI design. |
| 7 LLO | Low-line logic output | Open-drain early-warning output; goes low when VCC falls below 1.02 × VRST. |
| 8 PFO | Power-fail logic output | Open-drain output reflecting PFI comparator state; independent of RESET timing. |
| 9 NC | No connection | Test-only pin; factory use only; must remain unconnected in application. |
| 10 RESET | Reset logic output | Open-drain active-low reset signal; pulses low for 200 ms after VCC recovery or MR release. |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 3.08 V reset threshold | Eliminates external resistor network for standard 3.3 V system monitoring; reduces BOM count and layout area. |
| Integrated PFI comparator with 1.225 V reference | Enables monitoring of auxiliary rails (e.g., battery backup, analog supply) without external reference IC. |
| LLO output at 1.02 × VRST | Provides deterministic early-interrupt window for firmware-controlled save/hibernate before hard reset occurs. |
| 28 µA supply current | Supports continuous supervision in energy-sensitive applications such as remote sensors and portable instrumentation. |
| Internal 56 kΩ MR pullup | Permits direct switch-to-ground interface without external resistor; simplifies mechanical reset button implementation. |
Applications
| Industrial PLC I/O Module | Automotive Body Control Unit |
|---|---|
Use Scenario: Monitors 3.3 V microcontroller supply and 5 V CAN transceiver rail in harsh temperature environments. IC Role / Device Role / Timing Role: Voltage supervisor providing primary reset assertion and secondary PFI-based fault detection on auxiliary rail. Use Value: Prevents spurious MCU operation during cold-cranking voltage dip; PFO signals upstream regulator failure before VCC collapse. |
Use Scenario: Supervises power to infotainment SoC and memory subsystem during ignition cycling and load-dump events. IC Role / Device Role / Timing Role: Dual-threshold monitor generating early LLO interrupt for DRAM retention and hard RESET for full system recovery. Use Value: Enables 100+ ms of controlled data save before power loss; meets ISO 16750-2 transient immunity requirements. |
| Medical Patient Monitor | Smart Energy Meter |
Use Scenario: Ensures reliable boot sequence for ARM Cortex-M4 processor during battery-switchover in portable diagnostic device. IC Role / Device Role / Timing Role: Primary supervisor with MR input tied to service-mode button and PFI monitoring backup Li-ion cell voltage. Use Value: Guarantees deterministic reset behavior across 0–50°C operating range; ±2% threshold stability avoids false resets during thermal drift. |
Use Scenario: Supervises 3.3 V MCU and 1.8 V metrology ADC in utility-grade meter with tamper-detection circuitry. IC Role / Device Role / Timing Role: Provides synchronized reset and early LLO warning to initiate flash write protection before brownout. Use Value: Meets IEC 62053-21 data integrity requirements by ensuring EEPROM commit completes prior to supply collapse. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3808G33DBVR | 3.3 V reset threshold, push-pull RESET output, 200 ms timeout, 1.6 µA quiescent current. | Lacks PFI and LLO outputs; single-supply monitoring only. | Select when only basic 3.3 V reset is required and ultra-low IQ is critical; not suitable for dual-rail or early-warning use cases. |
| MAX6326UT31D3+ | 3.08 V reset threshold, open-drain RESET, 200 ms timeout, ±2.5% accuracy over temperature, 10 µA IQ. | No PFI or LLO functionality; no manual reset input. | Choose for cost-sensitive designs where only core reset supervision is needed and external MR/PFI circuitry can be added. |
Compared with TPS3808G33DBVR and MAX6326UT31D3+, the LM3704YCMM-308/NOPB uniquely delivers integrated PFI, LLO, and MR in a single VSSOP-10 package-enabling compact, feature-complete supervision without external components or additional ICs.
Availability
LM3704YCMM-308/NOPB is available at Aetrix Electronics and suitable for industrial PLC I/O modules, automotive body control units, medical patient monitors, and smart energy meters requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LM3704YCMM-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 and embedded processing solutions for industrial, automotive, and personal electronics markets.
The LM3704 belongs to TI's precision voltage supervisor product line, engineered specifically for high-reliability power monitoring in systems requiring deterministic reset timing, multi-rail fault detection, and early-warning interrupt capability.
FAQ
What is the reset threshold voltage of the LM3704YCMM-308/NOPB?
The LM3704YCMM-308/NOPB has a fixed reset threshold of 3.08 V with ±0.5% accuracy at 25°C and ±2% accuracy over the full –40°C to +85°C operating range. This value is laser-trimmed at wafer test and applies specifically to the LM3704YCMM-308/NOPB variant, as confirmed in TI's SNVS088F datasheet Section 6.5.
Does the LM3704YCMM-308/NOPB support manual reset functionality?
Yes, the LM3704YCMM-308/NOPB includes a dedicated MR (manual reset) input (Pin 2) with a 1.225 V threshold and internal 56 kΩ pullup resistor. When MR is pulled below this threshold for more than 25 µs, the RESET output asserts low after a 12 µs delay and remains active until MR rises above threshold and the 200 ms timeout expires.
What is the function of the LLO pin on the LM3704YCMM-308/NOPB?
The LLO (low-line output) pin (Pin 7) is an open-drain output that goes low when VCC falls below 1.02 × VRST (≈3.14 V) with 0.0032 × VRST hysteresis. It provides an early-warning interrupt signal-typically used to trigger NMI handling in µPs-before the main RESET activates at 3.08 V, enabling controlled shutdown or data save operations.
Can the LM3704YCMM-308/NOPB monitor a second supply voltage?
Yes, the LM3704YCMM-308/NOPB includes a dedicated PFI (power-fail input) pin (Pin 3) referenced to an internal 1.225 V comparator. By connecting an external resistor divider from a secondary supply (e.g., battery or analog rail) to PFI, the PFO output (Pin 8) indicates when that supply drops below the threshold-providing independent fault detection beyond VCC monitoring.
What package type is used for the LM3704YCMM-308/NOPB?
The LM3704YCMM-308/NOPB is packaged in a 10-pin VSSOP (DGS) package with 3.00 mm × 3.00 mm body size and 0.5 mm pitch. This RoHS-compliant, surface-mount package has moisture sensitivity level 1 and is rated for –40°C to +85°C operation, as specified in TI's orderable addendum and mechanical drawings.
LM3704YCMM-308/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:
- 3.08V
- 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-308/NOPB FAQ
1.How can I place an order for LM3704YCMM-308/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3704YCMM-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 LM3704YCMM-308/NOPB reliable?
The price and inventory of LM3704YCMM-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 LM3704YCMM-308/NOPB is usually 5 days.
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Once your LM3704YCMM-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 LM3704YCMM-308/NOPB?
For technical support, including LM3704YCMM-308/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3704YCMM-308/NOPB requirements.
6.How does Aetrix verify that LM3704YCMM-308/NOPB is sourced from the original manufacturer or authorized distributors?
All LM3704YCMM-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 LM3704YCMM-308/NOPB meets industry standards.
7.What is the process for return or replacement of LM3704YCMM-308/NOPB?
All LM3704YCMM-308/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM3704YCMM-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 LM3704YCMM-308/NOPB part is unused and in its original packaging.
Return procedure for LM3704YCMM-308/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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