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Analog Devices Inc./Maxim Integrated MAX6375UR26+
- Part No.:
- MAX6375UR26+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MAX6375UR26+.pdf
- Description:
- MAX6375 3-PIN, ULTRA-LOW-POWER V
- Quantity:
- Payment:
- Shipping:
Inventory:2,047
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Product details
Overview
MAX6375UR26+ from Maxim Integrated is an ultra-low-power, 3-pin SOT23-3 voltage detector IC designed for precision supply monitoring in battery-powered systems. It features a factory-trimmed 2.63V threshold (±2.5% over temperature), active-low push-pull output, 500nA supply current, and guaranteed operation down to 1V VCC - ideal for Li-ion battery undervoltage lockout in portable medical devices.
For engineers reviewing the MAX6375UR26+ datasheet, MAX6375UR26+ pinout, MAX6375UR26+ application, or MAX6375UR26+ equivalent, key selection criteria include reset threshold accuracy, ultra-low ICC, transient immunity, and compatibility with 1.2–5.5V supply rails in space-constrained designs.
Technical Context
The MAX6375UR26+ integrates a precision bandgap reference, comparator, and laser-trimmed resistive divider to deliver fixed 2.63V detection without external components. Its internal hysteresis (100mV) prevents chatter during slow VCC decay, and it ignores transients ≤20µs at 200mV overdrive.
This device operates as a single-function supervisor: asserting OUT low when VCC falls below 2.63V, holding that state until VCC rises above (2.63V + 100mV), with propagation delay of 6.3µs (typ) and guaranteed logic state integrity down to 1V VCC.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.63V ±2.5% over -40°C to +85°C - ensures reliable battery cutoff before deep discharge in 3.0V nominal systems. |
| Supply Current | 500nA typical - enables multi-year operation on coin-cell batteries in always-on IoT sensors. |
| Output Type | Active-low push-pull - drives MCU RESET pin directly without pull-up resistor, reducing BOM count. |
| VCC Operating Range | 1.2V to 5.5V - supports operation during brown-out and across multiple rail voltages (e.g., 1.8V, 3.3V, 5V). |
| Hysteresis | 100mV - prevents false resets during noisy or slowly recovering power rails. |
| Propagation Delay | 6.3µs typical (falling edge) - provides fast response to critical undervoltage events without excessive sensitivity. |
| Tempco | 40ppm/°C - maintains threshold stability across industrial temperature range without calibration. |
Pinout & Package
Package: 3-pin SOT23-3 (lead-free, RoHS-compliant, tape-and-reel). Compact 2.92mm × 1.3mm footprint with 0.95mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal bandgap and comparator - must be connected to system ground plane for accurate threshold. |
| 2 | OUT | Active-low push-pull output - sinks up to 1.2mA or sources 500µA; asserts low during undervoltage, high otherwise. |
| 3 | VCC | Supply input - powers internal circuitry; also the monitored voltage rail; accepts 1.2V–5.5V. |
Key Features
| Feature | Design Value |
|---|---|
| No external components required | Factory-trimmed threshold and internal reference eliminate need for resistors or capacitors - reduces PCB area and assembly cost. |
| Ultra-low 500nA supply current | Enables >10-year battery life in low-duty-cycle applications like wireless sensor nodes using CR2032 cells. |
| Transient immunity | Rejects VCC glitches ≤20µs wide - prevents spurious resets during switching noise or load dump events. |
| Guaranteed operation down to 1V | Ensures valid output state even during deep brown-out or battery depletion - critical for safe shutdown sequencing. |
| ±2.5% threshold accuracy over temp | Meets tight system-level reset margin requirements without derating or guard-banding in industrial environments. |
Applications
| Portable ECG Monitor | Smart Wearable Tracker |
|---|---|
Use Scenario: Monitors 3.0V Li-ion battery voltage to prevent operation below 2.6V, avoiding data corruption and electrode damage. IC Role / Device Role / Timing Role: Voltage supervisor providing clean, glitch-free reset signal to ARM Cortex-M0+ microcontroller upon undervoltage. Use Value: 500nA ICC extends battery runtime by >18 months versus µA-class supervisors; 2.63V threshold aligns precisely with battery discharge knee. | Use Scenario: Detects voltage sag during BLE radio transmission bursts to trigger low-power mode entry before brown-out. IC Role / Device Role / Timing Role: Single-event reset generator with 6.3µs response - fast enough to halt CPU before register corruption occurs. Use Value: Push-pull output eliminates external pull-up, saving 0.25mm² PCB area and enabling 3.2mm × 3.2mm wearable form factor. |
| Industrial Wireless Sensor Node | Handheld Barcode Scanner |
Use Scenario: Supervises 3.3V DC/DC output powering LoRa transceiver and MCU in remote metering units. IC Role / Device Role / Timing Role: System-level power monitor asserting reset when input drops below 2.63V due to aging primary battery or cold-temperature derating. Use Value: 40ppm/°C tempco ensures consistent trip point across -40°C to +85°C operating range - no field recalibration needed. | Use Scenario: Protects flash memory and display driver ICs from write errors during rapid battery drain under scanner motor load. IC Role / Device Role / Timing Role: Undervoltage lockout (UVLO) device generating hardware reset pulse to halt firmware execution before voltage collapse. Use Value: 100mV hysteresis prevents oscillation during marginal battery conditions - eliminates intermittent boot failures in field use. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803EB26DBZR | 2.63V threshold, 350nA ICC, open-drain output, SOT23-3 | Requires external pull-up; lower ICC but no push-pull drive capability | Select when interfacing to mixed-voltage logic (e.g., 1.8V I/O) or when lowest possible ICC is critical |
| APX803S-26SA-7 | 2.63V threshold, 800nA ICC, push-pull output, SOT23-3 | Higher supply current; wider tempco (100ppm/°C); same pinout | Select when cost sensitivity outweighs ultra-low-power requirement and tighter tempco is not needed |
Compared with TLV803EB26DBZR and APX803S-26SA-7, the MAX6375UR26+ uniquely balances 500nA ICC, push-pull output, ±2.5% threshold accuracy, and 40ppm/°C tempco - making it optimal for compact, long-life, high-reliability battery systems where board space and precision are constrained.
Availability
MAX6375UR26+ is available at Aetrix Electronics and suitable for portable medical devices, smart wearables, industrial wireless sensors, and handheld scanners requiring stable component supply and long-term manufacturability.
Supply support for MAX6375UR26+ 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, automotive, and computing applications.
The MAX6375–MAX6380 family delivers ultra-low-power, factory-trimmed voltage supervision for battery-critical systems - targeting applications where size, current budget, and threshold accuracy are non-negotiable.
FAQ
What is the exact reset threshold voltage of the MAX6375UR26+?
The MAX6375UR26+ has a factory-trimmed nominal reset threshold of 2.63V, with ±2.5% accuracy over the full -40°C to +85°C temperature range. This value is laser-trimmed during production and specified in Table 1 of the datasheet under suffix "R26". The MAX6375UR26+ does not require external calibration or adjustment to achieve this performance.
Does the MAX6375UR26+ require any external components to operate?
No, the MAX6375UR26+ requires zero external components. It integrates a precision bandgap reference, comparator, and trimmed resistor network internally. Unlike adjustable supervisors, the MAX6375UR26+ functions as a complete, self-contained voltage detector - eliminating resistors, capacitors, and layout complexity while ensuring repeatable 2.63V trip points across production lots.
What is the output configuration of the MAX6375UR26+ and how does it interface with an MCU?
The MAX6375UR26+ features an active-low push-pull output. When VCC ≥ 2.63V + hysteresis, OUT is driven high (~VCC); when VCC falls below 2.63V, OUT is actively pulled low. This allows direct connection to standard CMOS RESET inputs (e.g., STM32 NRST, nRF52840 RESETN) without external pull-up resistors - simplifying design and improving noise immunity compared to open-drain alternatives.
How does the MAX6375UR26+ handle power supply transients?
The MAX6375UR26+ incorporates built-in transient immunity: it ignores negative-going VCC glitches ≤20µs wide when the overdrive (VTH – VCC) is 200mV. This is confirmed in Figure MAX6375-04 of the datasheet. As overdrive increases, the maximum tolerable transient duration decreases - ensuring robust operation in noisy environments like motor-driven or RF-intensive systems without false resets.
Is the MAX6375UR26+ compatible with both SC70-3 and SOT23-3 footprints?
No - the MAX6375UR26+ is specifically packaged in 3-pin SOT23-3 (top mark FZHC), not SC70-3. The "UR" suffix denotes SOT23-3; "XR" would indicate SC70-3. While both packages have identical pinouts (GND, OUT, VCC), their physical dimensions differ: SOT23-3 measures 2.92mm × 1.3mm, SC70-3 is smaller at 2.0mm × 2.1mm. Using the wrong footprint risks solder joint reliability and thermal performance issues.
MAX6375UR26+ 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:
- 2.63V
- 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
MAX6375UR26+ FAQ
1.How can I place an order for MAX6375UR26+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6375UR26+ 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 MAX6375UR26+ reliable?
The price and inventory of MAX6375UR26+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6375UR26+ is usually 5 days.
3.What payment methods are accepted for MAX6375UR26+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6375UR26+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6375UR26+?
MAX6375UR26+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6375UR26+ 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 MAX6375UR26+?
For technical support, including MAX6375UR26+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6375UR26+ requirements.
6.How does Aetrix verify that MAX6375UR26+ is sourced from the original manufacturer or authorized distributors?
All MAX6375UR26+ 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 MAX6375UR26+ meets industry standards.
7.What is the process for return or replacement of MAX6375UR26+?
All MAX6375UR26+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6375UR26+, 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 MAX6375UR26+ part is unused and in its original packaging.
Return procedure for MAX6375UR26+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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