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Analog Devices Inc./Maxim Integrated MAX6375UR29+T
- Part No.:
- MAX6375UR29+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MAX6375UR29+T.pdf
- Description:
- IC VOLT DETECT LP 2.93V SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,956
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Product details
Overview
MAX6375UR29+T 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 supply voltage in portable battery-powered systems and asserts logic-low OUT when VCC drops below threshold.
For engineers reviewing the MAX6375UR29+T datasheet, MAX6375UR29+T pinout, MAX6375UR29+T application, or MAX6375UR29+T equivalent, this device serves as a precision reset supervisor for microcontrollers and low-voltage power rails where minimal quiescent current and guaranteed operation down to 1V are critical.
Technical Context
The MAX6375UR29+T implements a precision bandgap reference and comparator with internally trimmed resistors to set its 2.93V trip point. It operates across -40°C to +85°C and guarantees correct output state down to VCC = 1V.
It features built-in immunity to fast VCC transients-rejecting negative glitches up to ~200µs depending on overdrive-and delivers propagation delay of 6.3µs (falling) and 9.5µs (rising) at full temperature range.
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 battery life in coin-cell–powered devices |
| Output Type | Active-low push-pull - drives logic-low directly without external pull-up; sinks 100µA at 0.4V VOL |
| VCC Operating Range | 1.2V to 5.5V - supports operation during brown-out and deep sleep, down to 1V for valid output state |
| Propagation Delay | 6.3µs (falling), 9.5µs (rising) - provides deterministic timing for system reset sequencing |
| Threshold Hysteresis | 100mV - prevents chatter during slow VCC recovery near trip point |
| Tempco | 40ppm/°C - maintains tight threshold stability across temperature without calibration |
Pinout & Package
MAX6375UR29+T is housed in a lead-free 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 return path |
| 2 | OUT | Active-low push-pull output; drives logic-low when VCC < 2.93V; no external pull-up required |
| 3 | VCC | Supply input; powers internal circuitry and defines monitored rail; functional down to 1V |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low ICC | 500nA enables >10-year battery life in 20µA-average IoT sensors |
| No external components | Factory-trimmed threshold eliminates resistor dividers and calibration effort |
| Transient immunity | Rejects VCC glitches ≤200µs (at 100mV overdrive), preventing false resets |
| Guaranteed 1V operation | Valid output state maintained even during deep brown-out, supporting graceful shutdown |
| ±2.5% threshold accuracy | Meets stringent reset margin requirements for 3.3V and 2.8V logic rails |
Applications
| Portable Medical Sensors | Industrial Data Loggers |
|---|---|
Use Scenario: Coin-cell–powered wearable ECG sensor operating for 5+ years between battery replacements. IC Role / Device Role / Timing Role: Reset supervisor monitoring 3.0V regulated rail; asserts /RESET to MCU upon battery sag below 2.93V. Use Value: 500nA supply current extends battery life; 2.93V threshold aligns precisely with Li-ion discharge knee. |
Use Scenario: Ruggedized environmental logger deployed in remote locations with intermittent solar charging. IC Role / Device Role / Timing Role: Power-fail detector triggering controlled data save and shutdown before VCC collapse. Use Value: Guaranteed 1V operation ensures valid reset signal even during final battery depletion phase. |
| Smart Meter Battery Backup | Low-Power Wireless Node |
Use Scenario: AMI smart meter retaining real-time clock and memory during main power outage using supercapacitor backup. IC Role / Device Role / Timing Role: Voltage monitor on 3.3V backup rail; initiates RTC freeze and SRAM retention when voltage falls to 2.93V. Use Value: Tight ±2.5% threshold tolerance prevents premature or delayed backup activation. |
Use Scenario: Sub-GHz LPWAN node powered by primary alkaline cells, transmitting hourly sensor readings. IC Role / Device Role / Timing Role: System supervisor asserting /RESET to wake-on-reset-capable MCU when battery reaches end-of-life voltage. Use Value: Push-pull output eliminates need for external pull-up, reducing BOM count and PCB area in space-constrained modules. |
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 ICC, SOT23-3, open-drain output | Requires external pull-up; lower ICC but lacks push-pull drive strength | Select when lowest possible current dominates and system already uses pull-ups |
| APX803S-29SA-7 | 2.93V threshold, 800nA ICC, SOT23-3, push-pull, ±1.5% initial accuracy | Higher accuracy and tighter tempco, but 1.6× higher supply current | Select when higher threshold precision justifies increased ICC in mission-critical reset paths |
Compared with TLV803EB29DBZR and APX803S-29SA-7, the MAX6375UR29+T uniquely balances ultra-low 500nA current, push-pull drive, and ±2.5% industrial-grade accuracy-making it optimal for long-life battery systems requiring self-contained reset assertion without layout overhead.
Availability
MAX6375UR29+T is available at Aetrix Electronics and suitable for portable medical sensors, industrial data loggers, smart meter battery backup, and low-power wireless nodes requiring stable component supply and long-term manufacturability.
Supply support for MAX6375UR29+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 high-performance analog, mixed-signal, and power management ICs for demanding industrial, automotive, and communications applications.
The MAX6375–MAX6380 family was engineered specifically for ultra-low-power voltage monitoring in battery-critical systems-delivering precision thresholds, nanoscale current, and robust transient immunity in minimal 3-pin packages.
FAQ
What is the exact reset threshold voltage of MAX6375UR29+T and how stable is it over temperature?
The MAX6375UR29+T has a factory-trimmed nominal threshold of 2.93V, with ±2.5% accuracy guaranteed over -40°C to +85°C. Its 40ppm/°C tempco ensures minimal drift across operating conditions, making it suitable for applications where reset margin must remain consistent despite ambient changes. This specification is verified per Maxim's Electrical Characteristics table.
Does MAX6375UR29+T require any external components to function?
No, MAX6375UR29+T requires no external components. Its precision bandgap reference, comparator, and threshold-setting resistors are fully integrated and factory-trimmed. The device operates with only VCC, GND, and OUT connections-eliminating resistor dividers, capacitors, or calibration circuitry typically needed in discrete supervisor solutions.
Can MAX6375UR29+T operate reliably when the supply voltage drops below 2.0V?
Yes, MAX6375UR29+T guarantees correct output logic state down to VCC = 1V. While its specified operating range starts at 1.2V, the device continues asserting the active-low output correctly even as VCC collapses further-enabling controlled shutdown sequences in deeply browned-out conditions where other supervisors may fail.
What is the output configuration of MAX6375UR29+T and how does it interface with common MCUs?
MAX6375UR29+T features an active-low push-pull output, meaning it actively drives OUT low when VCC falls below 2.93V and high-impedance (not actively high) otherwise. This allows direct connection to standard CMOS /RESET inputs without pull-up resistors-simplifying layout and reducing leakage paths compared to open-drain alternatives.
How does MAX6375UR29+T handle short voltage transients on the VCC line?
MAX6375UR29+T incorporates inherent immunity to fast VCC transients: it ignores negative-going glitches up to ~200µs duration (depending on overdrive magnitude), as confirmed by the "Maximum Transient Duration vs. Threshold Overdrive" graph in the datasheet. This prevents false resets during switching noise or load dump events in battery-powered systems.
MAX6375UR29+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- 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+T FAQ
1.How can I place an order for MAX6375UR29+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6375UR29+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 MAX6375UR29+T reliable?
The price and inventory of MAX6375UR29+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6375UR29+T is usually 5 days.
3.What payment methods are accepted for MAX6375UR29+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6375UR29+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6375UR29+T?
MAX6375UR29+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6375UR29+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 MAX6375UR29+T?
For technical support, including MAX6375UR29+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6375UR29+T requirements.
6.How does Aetrix verify that MAX6375UR29+T is sourced from the original manufacturer or authorized distributors?
All MAX6375UR29+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 MAX6375UR29+T meets industry standards.
7.What is the process for return or replacement of MAX6375UR29+T?
All MAX6375UR29+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6375UR29+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 MAX6375UR29+T part is unused and in its original packaging.
Return procedure for MAX6375UR29+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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