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Analog Devices Inc./Maxim Integrated MAX6375UR23
- Part No.:
- MAX6375UR23
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MAX6375UR23.pdf
- Description:
- IC SUPERVISOR UL LO PWR VOLT DET
- Quantity:
- Payment:
- Shipping:
Inventory:1,937
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Product details
Overview
MAX6375UR23 from Maxim Integrated is an ultra-low-power, active-low voltage detector in SOT23-3 package, with factory-trimmed 2.32V threshold (±2.5% over temperature), 500nA supply current, and push-pull output. It monitors VCC in portable battery-powered systems and asserts OUT low when supply drops below threshold-used for precision brownout detection in Li+-powered microcontroller reset circuits.
For engineers reviewing the MAX6375UR23 datasheet, MAX6375UR23 pinout, MAX6375UR23 application, or MAX6375UR23 equivalent, key selection criteria include its 2.32V trip point, guaranteed logic state down to 1V VCC, immunity to fast transients, and compatibility with 1.2–5.5V operating range in space-constrained designs.
Technical Context
The MAX6375UR23 implements a precision bandgap reference and comparator with internally trimmed resistors to set a fixed 2.32V detection threshold. Its push-pull output drives low actively during undervoltage conditions without requiring external pull-up components.
Designed for single-function monitoring, it ignores transients ≤200µs at 10mV overdrive and guarantees correct output logic state across -40°C to +85°C while consuming only 500nA typical supply current-enabling multi-year operation on coin-cell batteries.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Threshold Voltage | 2.32V ±2.5% over -40°C to +85°C - ensures reliable brownout detection across industrial temperature range |
| Supply Current | 500nA typical - enables >10-year battery life in always-on monitoring applications |
| Output Type | Active-low push-pull - eliminates need for external pull-up resistor and supports direct MCU reset input |
| VCC Operating Range | 1.2V to 5.5V - functions correctly even as battery discharges to 1.2V, maintaining valid logic state |
| Propagation Delay | 6.3µs typical (falling edge) - provides fast response to supply collapse without false triggering |
| Threshold Hysteresis | 100mV - prevents output oscillation during slow VCC recovery near trip point |
| Tempco | 40ppm/°C - ensures stable threshold drift over temperature for precision monitoring |
Pinout & Package
MAX6375UR23 is housed in a 3-pin SOT23-3 package (JEDEC MO-178AA), footprint-compatible with SC70-3 but with higher power dissipation rating (320mW at +70°C).
| 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 VCC < 2.32V; drives high impedance when VCC ≥ threshold |
| 3 | VCC | Supply input - powers internal circuitry; operates from 1.2V to 5.5V with full functionality down to 1V |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 500nA enables multi-year operation on CR2032 coin cells in always-on monitoring |
| No external components required | Internally trimmed resistors and bandgap eliminate calibration parts and PCB area |
| Transient immunity | Rejects negative VCC glitches ≤200µs (at 10mV overdrive), preventing false resets |
| Guaranteed logic state down to 1V | Ensures deterministic reset behavior even during deep battery discharge |
| Factory-trimmed accuracy | ±2.5% threshold tolerance over full temperature range reduces design margin requirements |
Applications
| Portable Medical Sensors | IoT Edge Node Power Management |
|---|---|
Use Scenario: Continuous glucose monitor powered by CR2032 battery, requiring reliable low-voltage shutdown before sensor data corruption. IC Role / Device Role / Timing Role: Brownout detector asserting MCU reset when battery falls below 2.32V to prevent firmware execution errors. Use Value: 500nA supply current extends usable battery life by >30% versus µA-class alternatives; 100mV hysteresis avoids chatter during gradual discharge. |
Use Scenario: LPWAN node using buck converter and BLE SoC, where supply collapse must trigger controlled sleep entry before memory loss. IC Role / Device Role / Timing Role: Primary VCC supervisor feeding into SoC's POR circuit, with propagation delay <7µs ensuring timely intervention. Use Value: Push-pull output directly interfaces with SoC reset pin without pull-up resistor, saving BOM cost and board space in 2-layer PCB designs. |
| Industrial Handheld Terminals | Smart Meter Battery Backup |
Use Scenario: Ruggedized barcode scanner with alkaline AA pack, needing robust reset under cold-temperature battery sag (-20°C). IC Role / Device Role / Timing Role: System-level voltage monitor enabling graceful shutdown when main supply dips below 2.32V during motor startup load. Use Value: ±2.5% threshold accuracy over -40°C to +85°C eliminates need for temperature compensation circuitry in wide-temperature deployments. |
Use Scenario: Electricity meter with supercapacitor backup, requiring precise 2.32V switchover point to preserve real-time clock and tamper logs. IC Role / Device Role / Timing Role: Critical backup-supply supervisor that triggers nonvolatile storage write before capacitor voltage collapses. Use Value: Guaranteed logic state down to 1V VCC ensures reset assertion remains valid even as supercapacitor discharges to endpoint. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803EB23DBZR | 2.33V threshold, 350nA supply current, open-drain output, SOT23-3 | Requires external pull-up resistor; lower ICC but no push-pull drive capability | Select when system already uses open-drain reset buses or needs sub-500nA current |
| APX803S-23SA-7 | 2.32V threshold, 800nA supply current, push-pull output, SOT23-3 | Higher ICC reduces battery lifetime; same pinout but wider tempco (60ppm/°C) | Select when Maxim supply chain constraints exist and 800nA ICC is acceptable |
Compared with MAX6375UR23, TLV803EB23DBZR offers lower current but requires external biasing, while APX803S-23SA-7 matches threshold and package but trades 300nA extra current for broader supplier availability-making MAX6375UR23 optimal for long-life, component-minimized designs.
Availability
MAX6375UR23 is available at Aetrix Electronics and suitable for portable medical sensors, IoT edge nodes, industrial handheld terminals, and smart meter battery backup systems requiring stable component supply and long-term manufacturability.
Supply support for MAX6375UR23 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, sensing, and interface applications, with emphasis on low-power, high-reliability solutions.
The MAX6375–MAX6380 family was developed specifically for ultra-low-power voltage monitoring in battery-critical systems-prioritizing nanoscale current, factory-trimmed accuracy, and transient-immune operation in minimal 3-pin packages.
FAQ
What is the exact factory-trimmed threshold voltage of MAX6375UR23?
The MAX6375UR23 has a nominal threshold voltage of 2.32V, with ±2.5% tolerance over the full -40°C to +85°C temperature range. This value is laser-trimmed at wafer test and confirmed in Table 1 of the datasheet under suffix "R23". The MAX6375UR23 maintains this accuracy without external calibration components.
Does MAX6375UR23 require an external pull-up resistor on its OUT pin?
No, MAX6375UR23 does not require an external pull-up resistor because it features an active-low push-pull output. The internal driver actively pulls OUT low during undervoltage and releases it to high-impedance when VCC is above threshold-enabling direct connection to standard CMOS reset inputs without additional components.
Can MAX6375UR23 operate reliably at VCC = 1.2V?
Yes, MAX6375UR23 is fully specified to operate and maintain correct output logic state down to VCC = 1.2V, and guaranteed functional down to 1.0V. This allows it to assert reset even during deep battery discharge in systems powered by single-cell Li+, alkaline, or NiMH sources.
What is the maximum transient duration MAX6375UR23 can ignore at 2.32V threshold?
At a 10mV overdrive (i.e., VCC = 2.31V), MAX6375UR23 rejects transients up to 200µs in duration, as shown in Figure MAX6375-04. This immunity prevents false resets caused by brief supply sags during RF transmission bursts or motor commutation spikes in portable equipment.
Is MAX6375UR23 available in lead-free packaging?
Yes, MAX6375UR23 is available in lead-free packaging. To order the RoHS-compliant version, replace the "-T" suffix with "+T" (e.g., MAX6375UR23+T). Both versions use the same SOT23-3 package outline and electrical specifications; only the termination plating differs.
MAX6375UR23 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:
- 2.32V
- 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
MAX6375UR23 FAQ
1.How can I place an order for MAX6375UR23 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6375UR23 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 MAX6375UR23 reliable?
The price and inventory of MAX6375UR23 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6375UR23 is usually 5 days.
3.What payment methods are accepted for MAX6375UR23?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6375UR23 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6375UR23?
MAX6375UR23 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6375UR23 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 MAX6375UR23?
For technical support, including MAX6375UR23 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6375UR23 requirements.
6.How does Aetrix verify that MAX6375UR23 is sourced from the original manufacturer or authorized distributors?
All MAX6375UR23 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 MAX6375UR23 meets industry standards.
7.What is the process for return or replacement of MAX6375UR23?
All MAX6375UR23 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6375UR23, 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 MAX6375UR23 part is unused and in its original packaging.
Return procedure for MAX6375UR23:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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