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Texas Instruments LM3704YAMM-308/NOPB
- Part No.:
- LM3704YAMM-308/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LM3704YAMM-308/NOPB.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 10VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,308
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Product details
Overview
LM3704YAMM-308/NOPB from Texas Instruments is a microprocessor supervisory IC in MSOP-10 package, providing 3.08V reset threshold, 1.4ms reset timeout, open-drain RESET output, and integrated power-fail (PFI), manual-reset (MR), and low-line (LLO) comparators - used to ensure reliable boot-up and brownout protection in embedded controllers.
For engineers reviewing the LM3704YAMM-308/NOPB datasheet, LM3704YAMM-308/NOPB pinout, LM3704YAMM-308/NOPB application, or LM3704YAMM-308/NOPB equivalent, key selection criteria include reset accuracy (±0.5% at 25°C), VCC operation down to 1.0V, 28 µA supply current, and dual-voltage monitoring capability via PFI and LLO for early warning of supply collapse.
Technical Context
The LM3704YAMM-308/NOPB integrates three independent voltage comparators: one for VCC reset detection (3.08V threshold with ±2% over temperature), one for external power-fail monitoring (1.225V PFI threshold), and one for early low-line warning (VLLOT = 1.02 × VRST). All comparators feature hysteresis (0.0032 × VRST) and sub-µs propagation delay.
Its open-drain RESET output supports wired-OR configurations and interfaces directly with µP reset inputs requiring active-low assertion. The internal MR input includes a 56 kΩ pull-up and 1.225V threshold, enabling direct connection to logic or external voltage dividers without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.08V ±0.5% at 25°C; ensures precise power-on reset initiation at nominal 3.3V rail |
| Reset Timeout Period | 1.4ms; guarantees minimum reset pulse width for reliable µP initialization |
| VCC Operating Range | 1.0V to 5.5V; enables supervision of ultra-low-voltage systems and brownout recovery down to 1V |
| Supply Current | 28 µA typical; minimizes quiescent load on battery-backed or energy-constrained systems |
| PFO/LLO Output Type | Open-drain; allows level-shifting, wired-OR, and flexible pull-up configuration for system-level interrupt routing |
| Power-Fail Input Threshold | 1.225V ±25mV; provides stable reference for monitoring auxiliary supplies or unregulated rails |
| Low-Line Output Threshold | 1.02 × VRST (≈3.14V); triggers non-maskable interrupt ~2% before reset activation for graceful shutdown |
Pinout & Package
LM3704YAMM-308/NOPB uses the MSOP-10 (MUB10A) package: 3.0 mm × 3.0 mm × 1.0 mm body, 0.5 mm pitch, exposed pad optional. Pin 1 marked by dot; pins numbered counter-clockwise.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Main power supply input; powers all internal comparators and logic; valid from 1.0V |
| 2 | MR | Manual-reset input; asserts RESET when pulled below 1.225V; includes internal 56 kΩ pull-up |
| 3 | PFI | Power-fail comparator input; referenced to 1.225V internal bandgap; monitors secondary supply |
| 4, 6 | NC | No-connect; must be left floating per datasheet; not internally bonded |
| 5 | GND | Analog/digital ground reference; common return for all comparators and outputs |
| 7 | LLO | Low-line output; open-drain; goes low when VCC falls to 1.02 × VRST for early warning |
| 8 | PFO | Power-fail output; open-drain; goes low when PFI < 1.225V for auxiliary supply fault signaling |
| 9 | NC | No-connect; factory test pin; must be left floating |
| 10 | RESET | Open-drain reset output; actively pulled low during power-up, brownout, or MR assertion |
Key Features
| Feature | Design Value |
|---|---|
| Factory-programmed 3.08V reset threshold | Eliminates external resistor divider; reduces BOM count and layout area in space-constrained designs |
| 1.4ms fixed reset timeout | Guarantees sufficient reset hold time for ARM Cortex-M and similar µPs without external timing components |
| Three independent comparators (VCC, PFI, LLO) | Enables simultaneous monitoring of main rail, backup supply, and early-warning threshold in single chip |
| ±0.5% reset accuracy at room temperature | Reduces margining requirements in 3.3V systems, improving design headroom versus ±2% alternatives |
| 28 µA supply current | Extends battery life in portable instrumentation and remote sensors where standby current is critical |
Applications
| Industrial PLC Controller | Medical Infusion Pump |
|---|---|
Use Scenario: Monitors 3.3V logic rail and 5V pump motor driver supply in a Class II medical device with battery backup. IC Role / Device Role / Timing Role: LM3704YAMM-308/NOPB asserts RESET on VCC brownout and generates NMI via LLO to trigger safe motor stop before undervoltage lockout. Use Value: Dual-threshold detection prevents spurious resets while ensuring deterministic shutdown within 1.4ms of supply collapse. |
Use Scenario: Supervises microcontroller and analog front-end in a battery-powered infusion pump operating across −20°C to +70°C. IC Role / Device Role / Timing Role: LM3704YAMM-308/NOPB provides 3.08V reset with ±2% accuracy over temperature and uses PFI to monitor battery voltage divider. Use Value: Enables accurate end-of-life battery detection and controlled shutdown without adding discrete comparators or ADC overhead. |
| Automotive Body Control Module | Smart Energy Meter |
Use Scenario: Installed in a 12V-to-3.3V converted subsystem for door lock control, exposed to load dump and cold crank conditions. IC Role / Device Role / Timing Role: LM3704YAMM-308/NOPB monitors post-regulator rail and uses MR input for service-mode reset via CAN diagnostic command. Use Value: Open-drain RESET supports shared reset bus; 1V operation ensures functionality during cold-crank dips to 6V input. |
Use Scenario: Embedded in a DIN-rail meter with isolated RS-485 and real-time clock, powered by supercapacitor during AC loss. IC Role / Device Role / Timing Role: LM3704YAMM-308/NOPB detects AC dropout via PFI, triggers LLO for RTC save, then asserts RESET after 1.4ms to halt firmware execution. Use Value: Eliminates need for separate supervisor + interrupt controller; reduces component count and PCB area in certified meter designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3808G33DBVR | Totem-pole RESET, 3.3V threshold, 200ms timeout, 1.8–6V VCC range | Lacks PFI and LLO outputs; only VCC monitoring with no auxiliary supply warning capability | Choose if only basic reset is needed and open-drain output is unnecessary |
| MAX6369KA29+T | 3.08V threshold, 140ms timeout, push-pull RESET, −40°C to +125°C rating | Higher temperature grade but no PFI/LLO; requires external capacitor for timeout adjustment | Prefer for extended-temp automotive under-hood use where auxiliary monitoring is omitted |
Compared with TPS3808G33DBVR and MAX6369KA29+T, LM3704YAMM-308/NOPB uniquely delivers triple-comparator supervision (VCC/PFI/LLO) in a single MSOP-10 package with 1.4ms fixed timeout and 1V operation - making it optimal for compact, multi-rail systems requiring early warning and deterministic reset behavior.
Availability
LM3704YAMM-308/NOPB is available at Aetrix Electronics and suitable for industrial PLC controllers, medical infusion pumps, automotive body control modules, and smart energy meters requiring stable component supply, long-term lifecycle support, and guaranteed traceability.
Supply support for LM3704YAMM-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 specializing in analog and embedded processing technologies, with leadership in power management, signal chain, and microcontrollers.
The LM3704 series belongs to TI's precision supervisory IC portfolio, designed specifically for high-reliability embedded systems needing multi-threshold voltage monitoring, low-power operation, and minimal external components.
FAQ
What is the reset timeout period of LM3704YAMM-308/NOPB?
The LM3704YAMM-308/NOPB has a factory-programmed reset timeout period of 1.4ms. This fixed duration ensures the RESET signal remains asserted long enough for microprocessors such as ARM Cortex-M0/M3 to complete power-on initialization reliably. The timeout begins when VCC rises above the 3.08V threshold or when the MR input releases, and is independent of external components.
Does LM3704YAMM-308/NOPB support operation below 2.0V VCC?
Yes, LM3704YAMM-308/NOPB operates down to 1.0V VCC and guarantees RESET assertion validity across this full range. Its internal comparators and logic remain functional even during deep brownout conditions, enabling robust supervision in ultra-low-voltage applications like coin-cell-powered sensors or energy-harvesting systems where supply may dip below 1.8V.
What is the function of the LLO pin on LM3704YAMM-308/NOPB?
The LLO (Low-Line Output) pin on LM3704YAMM-308/NOPB is an open-drain output that goes low when VCC falls to 1.02 × VRST (≈3.14V for 3.08V threshold), providing early warning of imminent power failure. It is commonly connected to a µP's NMI input to initiate controlled data save or state preservation before RESET activates - giving designers ~2% voltage margin for graceful shutdown.
Can LM3704YAMM-308/NOPB monitor a second supply voltage?
Yes, LM3704YAMM-308/NOPB includes a dedicated PFI (Power-Fail Input) pin with a precise 1.225V internal reference. By connecting an external resistor divider from a secondary supply (e.g., 5V or 12V rail) to PFI, the device asserts PFO low when that supply drops below the threshold - enabling independent monitoring of multiple rails without additional ICs.
Is LM3704YAMM-308/NOPB pin-compatible with other LM3704 variants?
Yes, all LM3704 variants in the MSOP-10 package - including LM3704YAMM-308/NOPB - share identical pinout and footprint. Differences are limited to reset threshold voltage, timeout period, and output type (open-drain vs. totem-pole), allowing drop-in replacement within the same package family when those parameters align with system requirements.
LM3704YAMM-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:
- Obsolete
- 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:
- 1ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-VSSOP
LM3704YAMM-308/NOPB FAQ
1.How can I place an order for LM3704YAMM-308/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3704YAMM-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 LM3704YAMM-308/NOPB reliable?
The price and inventory of LM3704YAMM-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 LM3704YAMM-308/NOPB is usually 5 days.
3.What payment methods are accepted for LM3704YAMM-308/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3704YAMM-308/NOPB transactions.
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LM3704YAMM-308/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3704YAMM-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 LM3704YAMM-308/NOPB?
For technical support, including LM3704YAMM-308/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3704YAMM-308/NOPB requirements.
6.How does Aetrix verify that LM3704YAMM-308/NOPB is sourced from the original manufacturer or authorized distributors?
All LM3704YAMM-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 LM3704YAMM-308/NOPB meets industry standards.
7.What is the process for return or replacement of LM3704YAMM-308/NOPB?
All LM3704YAMM-308/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM3704YAMM-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 LM3704YAMM-308/NOPB part is unused and in its original packaging.
Return procedure for LM3704YAMM-308/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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