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Analog Devices Inc./Maxim Integrated MAX6375UR29
- Part No.:
- MAX6375UR29
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MAX6375UR29.pdf
- Description:
- IC SUPERVISOR UL LO PWR VOLT DET
- Quantity:
- Payment:
- Shipping:
Inventory:1,377
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Product details
Overview
MAX6375UR29 from Maxim Integrated is an ultra-low-power, active-low voltage detector in SOT23-3 package, with factory-trimmed 2.93V threshold (±2.5% over temperature), 500nA supply current, and push-pull output. It monitors VCC in battery-powered systems and asserts OUT low when supply drops below threshold-used for reset generation in portable microcontroller applications.
For engineers reviewing the MAX6375UR29 datasheet, MAX6375UR29 pinout, MAX6375UR29 application, or MAX6375UR29 equivalent, this page delivers verified threshold accuracy, transient immunity specs, SOT23-3 footprint compatibility, and direct replacement guidance for precision brown-out detection in space-constrained designs.
Technical Context
The MAX6375UR29 integrates a precision bandgap reference, comparator, and laser-trimmed resistive divider to set its 2.93V trip point without external components. Its internal hysteresis of 100mV prevents chatter during slow VCC decay.
Designed for single-function voltage monitoring, it guarantees correct logic state down to 1V VCC and rejects transients ≤20µs at 100mV overdrive. Output propagation delay is 6.3µs (falling) and 9.5µs (rising) across -40°C to +85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Threshold Voltage | 2.93V ±2.5% over -40°C to +85°C - ensures reliable reset assertion across industrial temperature range |
| Supply Current | 500nA typical - enables multi-year operation on coin-cell batteries in always-on monitoring |
| Output Type | Active-low push-pull - drives logic inputs directly without pull-up resistor, reducing BOM count |
| VCC Operating Range | 1.2V to 5.5V - supports monitoring of Li+ cells, 3.3V/5V rails, and post-regulator supplies |
| Hysteresis | 100mV - prevents oscillation during gradual undervoltage conditions |
| Propagation Delay | 6.3µs (falling), 9.5µs (rising) - fast enough for MCU reset timing compliance in real-time systems |
| Package | SOT23-3 - 2.92mm × 1.3mm footprint compatible with high-density PCB layouts |
Pinout & Package
SOT23-3 package: 2.92mm × 1.3mm × 1.02mm body, gull-wing leads, lead-free (RoHS-compliant) option available as MAX6375UR29+T.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal bandgap and comparator - must be low-impedance connection to system ground plane |
| 2 | OUT | Active-low push-pull output - sinks current when asserted; drives CMOS/TTL inputs directly; no external pull-up required |
| 3 | VCC | Supply input - powers internal circuitry and sets monitored rail; operates down to 1.2V while maintaining valid output state |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low 500nA supply current | Extends battery life in wearables and IoT sensors by minimizing quiescent drain during sleep mode |
| ±2.5% threshold accuracy over temperature | Eliminates need for field calibration or margining in automotive and industrial environments |
| Factory-trimmed 2.93V threshold | Reduces design cycle time-no external resistor selection or trimming required for nominal 3.0V system monitoring |
| 100mV built-in hysteresis | Prevents false resets during noisy or slowly decaying power rails without external RC networks |
| Transient immunity up to 20µs | Rejects common switching noise and ESD-induced dips, improving system robustness without added filtering |
Applications
| Battery-Powered Microcontroller Reset | Li+ Cell Voltage Monitoring |
|---|---|
|
Use Scenario: A portable medical sensor uses a CR2032 coin cell to power an ARM Cortex-M0+ MCU; VCC drops during battery depletion. IC Role / Device Role / Timing Role: MAX6375UR29 acts as dedicated brown-out detector, asserting active-low reset to hold MCU in reset until VCC recovers above 2.93V. Use Value: Prevents erratic MCU behavior or flash corruption during low-battery operation with zero external components. |
Use Scenario: A Bluetooth tracker monitors a single-cell Li+ battery (nominal 3.7V, cutoff ~2.8V) to trigger low-battery alert before shutdown. IC Role / Device Role / Timing Role: MAX6375UR29 compares battery voltage against 2.93V threshold and drives an interrupt pin on the BLE SoC. Use Value: Enables precise end-of-life detection within ±73mV tolerance, extending usable battery capacity versus generic 3.0V detectors. |
| Power Sequencing in Wearables | Industrial Sensor Node Supervision |
|
Use Scenario: A smartwatch powers multiple subsystems (display, radio, sensor hub); main 3.3V regulator must stabilize before enabling peripherals. IC Role / Device Role / Timing Role: MAX6375UR29 monitors 3.3V rail and releases reset signal only after stable 2.93V is confirmed, coordinating power-up sequence. Use Value: Ensures deterministic startup order without FPGA or discrete logic, reducing firmware complexity and BOM cost. |
Use Scenario: A wireless vibration sensor in a factory environment runs off a 3.6V supercapacitor backup; voltage sags during peak transmission. IC Role / Device Role / Timing Role: MAX6375UR29 supervises the 3.6V rail and forces safe shutdown via microcontroller reset when voltage falls below 2.93V. Use Value: Guarantees data integrity during brown-out events with 6.3µs response-fast enough to halt ADC sampling before corruption occurs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803EB29DBZR | 2.93V threshold, 350nA supply current, open-drain output, SOT23-3 | Requires external pull-up resistor; lower ICC benefits ultra-long-life designs but adds component count | Select when lowest possible quiescent current is critical and board space allows pull-up resistor |
| TPS3808G33DBVR | 3.3V threshold, 1.1µA supply current, push-pull output, SOT23-6 | Higher threshold and 3-pin vs. 6-pin package - not drop-in; requires layout change and firmware adjustment | Choose only if system requires 3.3V reset level and higher drive strength justifies larger footprint |
Compared with TLV803EB29DBZR and TPS3808G33DBVR, the MAX6375UR29 uniquely combines 2.93V precision, push-pull output, and 500nA ICC in a 3-pin SOT23-enabling component-count reduction and exact match for 3.0V nominal rail supervision without redesign.
Availability
MAX6375UR29 is available at Aetrix Electronics and suitable for battery-powered microcontrollers, wearable health monitors, industrial sensor nodes, and portable instrumentation requiring stable component supply with guaranteed long-term availability.
Supply support for MAX6375UR29 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 and mixed-signal ICs for power management, sensing, and interface applications in industrial, automotive, and consumer markets.
The MAX6375–MAX6380 family was engineered specifically for ultra-low-power voltage monitoring in space-constrained portable equipment-delivering factory-trimmed thresholds, sub-µA operation, and minimal external component requirements.
FAQ
What is the exact threshold voltage of the MAX6375UR29 and how accurate is it over temperature?
The MAX6375UR29 has a factory-trimmed nominal threshold voltage of 2.93V, with guaranteed accuracy of ±2.5% over the full operating temperature range of -40°C to +85°C. This specification is validated by design and production-tested at +25°C, with overtemperature limits ensured through characterization-not just simulation. The MAX6375UR29 maintains this tolerance without requiring external calibration or compensation circuits.
Does the MAX6375UR29 require any external components to function?
No, the MAX6375UR29 requires zero external components. Its precision bandgap reference, comparator, and laser-trimmed resistor network are fully integrated. Unlike adjustable supervisors, the MAX6375UR29 needs only VCC, GND, and the load connected to OUT-making it ideal for minimalist BOMs in compact devices where every component counts.
What is the output configuration of the MAX6375UR29 and how does it interface with common logic families?
The MAX6375UR29 features an active-low push-pull output, meaning OUT drives low when VCC falls below 2.93V and high otherwise. It directly interfaces with standard CMOS and TTL inputs without pull-up resistors-VOH is ≥0.8×VCC at 500µA source current, and VOL is ≤0.4V at 100µA sink current. This eliminates external biasing and simplifies integration into microcontroller reset circuits.
How does the MAX6375UR29 handle power supply transients, and what is its maximum tolerable glitch duration?
The MAX6375UR29 is designed to ignore fast negative-going VCC transients. At 100mV overdrive (i.e., VCC = VTH − 100mV), it tolerates glitches up to 20µs without asserting OUT. This transient immunity is characterized across temperature and ensures reliable operation in electrically noisy environments like motor-driven or RF-intensive systems-without needing additional RC filtering.
Is the MAX6375UR29 available in lead-free packaging, and what is its RoHS status?
Yes, the MAX6375UR29 is available in lead-free packaging. To order the RoHS-compliant version, replace the "-T" suffix with "+T", resulting in MAX6375UR29+T. This variant meets JEDEC J-STD-020 moisture sensitivity level 1 (MSL-1) and complies with EU RoHS Directive 2011/65/EU and China RoHS GB/T 26572-2011 standards.
MAX6375UR29 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:
- Active
- Programmable:
- Not Verified
- Type:
- Voltage Detector
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.93V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
MAX6375UR29 FAQ
1.How can I place an order for MAX6375UR29 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6375UR29 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 MAX6375UR29 reliable?
The price and inventory of MAX6375UR29 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6375UR29 is usually 5 days.
3.What payment methods are accepted for MAX6375UR29?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6375UR29 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6375UR29?
MAX6375UR29 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6375UR29 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 MAX6375UR29?
For technical support, including MAX6375UR29 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6375UR29 requirements.
6.How does Aetrix verify that MAX6375UR29 is sourced from the original manufacturer or authorized distributors?
All MAX6375UR29 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 MAX6375UR29 meets industry standards.
7.What is the process for return or replacement of MAX6375UR29?
All MAX6375UR29 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6375UR29, 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 MAX6375UR29 part is unused and in its original packaging.
Return procedure for MAX6375UR29:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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