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Analog Devices Inc./Maxim Integrated MAX6376UR29-T
- Part No.:
- MAX6376UR29-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MAX6376UR29-T.pdf
- Description:
- IC SUPERVISOR UL LO PWR VOLT DET
- Quantity:
- Payment:
- Shipping:
Inventory:12,500
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Product details
Overview
MAX6376UR29-T from Maxim Integrated is an ultra-low-power, active-high push-pull voltage detector designed for precision supply monitoring in battery-powered systems. It features a factory-trimmed 2.93V threshold (±2.5% over temperature), 500nA supply current, and guaranteed operation down to 1V VCC. It asserts a logic-high output when VCC falls below threshold, enabling reliable reset or power-fail signaling in portable medical devices and low-power IoT sensors.
For engineers reviewing the MAX6376UR29-T datasheet, MAX6376UR29-T pinout, MAX6376UR29-T application, or MAX6376UR29-T equivalent, this device serves as a critical low-quiescent monitor for brownout detection, load switching control, and power-sequencing supervision where sub-1µA supply current and ±2.5% threshold accuracy are mandatory.
Technical Context
The MAX6376UR29-T integrates a precision bandgap reference, comparator, and laser-trimmed resistive divider to deliver fixed 2.93V detection without external components. Its active-high push-pull output drives high (VOH ≥ 0.8×VCC at 500µA) when VCC drops below threshold and low (VOL ≤ 0.4V at 1.2mA) otherwise, eliminating need for external pull-up.
Designed for immunity to fast transients, it ignores negative-going VCC glitches up to 140µs at 100mV overdrive. Propagation delay is 6.3µs (typical, falling edge) and 9.5µs (rising edge), with hysteresis of 0.1mV - ensuring stable output during slow-ramp power transitions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.93V nominal, ±2.5% over -40°C to +85°C - ensures accurate brownout detection across industrial temperature range |
| Supply Current | 500nA typical - enables multi-year battery life in coin-cell–powered devices |
| Output Type | Active-high push-pull - directly interfaces with MCU reset inputs without pull-up resistor |
| VCC Operating Range | 1.2V to 5.5V - supports monitoring of Li+ cells, 3.3V/5V rails, and post-regulator supplies |
| Propagation Delay | 6.3µs (falling), 9.5µs (rising) - provides timely response while avoiding false triggers on noise |
| Threshold Hysteresis | 0.1mV - prevents output oscillation during slow VCC recovery near trip point |
| Tempco | 40ppm/°C - maintains tight threshold stability over full temperature range |
Pinout & Package
MAX6376UR29-T is housed in a 3-pin SOT23-3 package (JEDEC MO-178AA), footprint-compatible with industry-standard SOT-23 layouts and optimized for space-constrained PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal bandgap and comparator - must be connected to system ground plane for stable threshold accuracy |
| 2 | OUT | Active-high push-pull output - sources current when VCC < 2.93V (VOH ≥ 0.8×VCC), sinks current otherwise (VOL ≤ 0.4V) |
| 3 | VCC | Supply input - monitors this rail; operates from 1.2V to 5.5V; internal circuitry functional down to 1V |
Key Features
| Feature | Design Value |
|---|---|
| No external components required | Laser-trimmed internal resistor network eliminates calibration parts and layout area |
| Ultra-low 500nA quiescent current | Extends battery life in always-on monitoring applications such as wearables and remote sensors |
| Guaranteed output state down to 1V VCC | Ensures valid reset assertion even during deep brownout or battery depletion |
| Transient-immune design | Rejects VCC glitches ≤140µs (at 100mV overdrive), preventing spurious resets in noisy environments |
| ±2.5% threshold accuracy over temperature | Meets stringent requirements for precision power-fail detection in medical and industrial equipment |
Applications
| Portable Medical Sensors | Battery-Powered IoT Endpoints |
|---|---|
Use Scenario: Continuous glucose monitor powered by CR2032 coin cell, requiring reliable low-battery warning before shutdown. IC Role / Device Role / Timing Role: Voltage detector asserting active-high reset signal to microcontroller when battery drops below 2.93V. Use Value: 500nA supply current extends operational life beyond 2 years; ±2.5% threshold ensures consistent warning timing across operating temperatures. |
Use Scenario: LoRaWAN sensor node sleeping >99% of time, waking periodically to transmit temperature/humidity data. IC Role / Device Role / Timing Role: Brownout supervisor triggering controlled shutdown sequence when primary Li-SOCl₂ cell reaches end-of-life voltage. Use Value: Guaranteed 1V operation allows full utilization of battery capacity; push-pull output eliminates external pull-up, reducing BOM count and leakage paths. |
| Industrial Control I/O Modules | Low-Power Wearable Electronics |
Use Scenario: DIN-rail mounted PLC I/O expander with isolated 3.3V logic rail derived from 24V bus. IC Role / Device Role / Timing Role: Power-supply monitor verifying 3.3V regulator integrity before enabling fieldbus communication. Use Value: 6.3µs propagation delay enables fast fault response; transient immunity prevents false trips during relay switching noise. |
Use Scenario: Smart fitness tracker using single-cell Li-ion with fuel gauge and real-time activity monitoring. IC Role / Device Role / Timing Role: System-level voltage supervisor asserting reset to application processor when battery voltage crosses 2.93V threshold. Use Value: SOT23-3 footprint minimizes board area; active-high output directly satisfies ARM Cortex-M reset polarity requirements without level-shifting. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage monitoring applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803EB29DBZR | 2.93V threshold, 350nA supply current, open-drain output, same SOT23-3 package | Requires external pull-up resistor; lower quiescent current but higher system-level power due to pull-up leakage | Select when lowest possible ICC is critical and board layout accommodates pull-up |
| APX803S-29SA-7 | 2.93V threshold, 1.1µA supply current, active-high push-pull, same SOT23-3 package | Higher supply current reduces battery life; wider threshold tolerance (±3.5%) affects precision timing | Select when cost sensitivity outweighs ultra-low-power requirement and ±3.5% accuracy is acceptable |
Compared with TLV803EB29DBZR and APX803S-29SA-7, the MAX6376UR29-T uniquely balances 500nA supply current, active-high push-pull output, and ±2.5% threshold accuracy in a standard SOT23-3 footprint - making it optimal for precision, low-power brownout detection where board area and external component count are constrained.
Availability
MAX6376UR29-T is available at Aetrix Electronics and suitable for portable medical sensors, battery-powered IoT endpoints, and industrial control I/O modules requiring stable component supply, long-term lifecycle support, and guaranteed lead-free compliance.
Supply support for MAX6376UR29-T 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
Maxim Integrated (now part of Analog Devices) designs precision analog, mixed-signal, and power-management ICs for demanding industrial, medical, and communications applications.
The MAX6375–MAX6380 family delivers ultra-low-power voltage detection for battery and power-supply monitoring, targeting applications where nanoscale quiescent current and factory-trimmed accuracy eliminate calibration overhead.
FAQ
What is the exact reset threshold voltage of the MAX6376UR29-T?
The MAX6376UR29-T has a factory-trimmed nominal reset threshold of 2.93V, with guaranteed accuracy of ±2.5% over the full operating temperature range (-40°C to +85°C). This value is laser-trimmed during manufacturing and does not require external adjustment - the "R29" suffix in the part number explicitly denotes the 2.93V variant within the MAX6376 series.
Does the MAX6376UR29-T require any external components to operate?
No, the MAX6376UR29-T requires no external components. It integrates a precision bandgap reference, comparator, and laser-trimmed resistor network to set the 2.93V threshold. The active-high push-pull output drives directly into MCU reset pins without pull-up resistors, simplifying design and reducing BOM count and PCB area.
What is the minimum VCC voltage at which the MAX6376UR29-T guarantees correct output logic state?
The MAX6376UR29-T guarantees correct output logic state - i.e., active-high assertion when VCC < 2.93V - down to 1V VCC. This is specified in the datasheet and enables reliable operation during deep brownout conditions, such as end-of-life battery discharge in portable equipment.
How does the MAX6376UR29-T handle power supply transients?
The MAX6376UR29-T is designed to ignore fast negative-going VCC transients. Its internal architecture rejects glitches up to 140µs in duration when the overdrive (VTH – VCC) is 100mV. This transient immunity prevents false resets in electrically noisy environments like motor-driven industrial systems or switch-mode power supply proximity.
What package options are available for the MAX6376UR29-T?
The MAX6376UR29-T is offered exclusively in the 3-pin SOT23-3 package (JEDEC MO-178AA), marked "FZHK" on the top surface. It is not available in SC70 - that variant is designated MAX6376XR29-T. Both packages share identical pinout (GND, OUT, VCC), but SOT23-3 offers broader assembly compatibility and thermal performance.
MAX6376UR29-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Voltage Detector
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.93V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
MAX6376UR29-T FAQ
1.How can I place an order for MAX6376UR29-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6376UR29-T 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 MAX6376UR29-T reliable?
The price and inventory of MAX6376UR29-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6376UR29-T is usually 5 days.
3.What payment methods are accepted for MAX6376UR29-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6376UR29-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6376UR29-T?
MAX6376UR29-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6376UR29-T 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 MAX6376UR29-T?
For technical support, including MAX6376UR29-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6376UR29-T requirements.
6.How does Aetrix verify that MAX6376UR29-T is sourced from the original manufacturer or authorized distributors?
All MAX6376UR29-T 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 MAX6376UR29-T meets industry standards.
7.What is the process for return or replacement of MAX6376UR29-T?
All MAX6376UR29-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6376UR29-T, 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 MAX6376UR29-T part is unused and in its original packaging.
Return procedure for MAX6376UR29-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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