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Analog Devices Inc./Maxim Integrated MAX6378XR35+T
- Part No.:
- MAX6378XR35+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6378XR35+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,060
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Product details
Overview
MAX6378XR35+T from Maxim Integrated is an ultra-low-power, active-low voltage detector IC designed for precision power-supply monitoring in battery-powered systems. It features a factory-trimmed 3.50V threshold (±2.5% over temperature), 500nA supply current, push-pull output, and operates from 1.2V to 5.5V VCC - enabling reliable brownout detection in portable medical sensors and low-power IoT nodes.
For engineers reviewing the MAX6378XR35+T datasheet, MAX6378XR35+T pinout, MAX6378XR35+T application, or MAX6378XR35+T equivalent, key selection criteria include its 3.50V trip point, SC70-3 package footprint, 9.5µs propagation delay, and immunity to sub-200µs VCC transients - critical for stable reset assertion in energy-harvesting microcontrollers.
Technical Context
The MAX6378XR35+T implements a precision bandgap reference and comparator with internally trimmed resistors to set its 3.50V threshold. Its push-pull output asserts logic low when VCC falls below VTH and remains valid down to 1V VCC, ensuring deterministic reset behavior during deep discharge.
Designed for transient immunity, it ignores negative-going VCC glitches shorter than 200µs at 100mV overdrive, and guarantees ±2.5% threshold accuracy across –40°C to +85°C without external calibration components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Threshold Voltage | 3.50V ±2.5% over –40°C to +85°C - ensures accurate brownout detection across industrial temperature range |
| Supply Current | 500nA typical - enables multi-year operation on coin-cell batteries in always-on monitoring applications |
| Propagation Delay | 9.5µs typical - provides fast, deterministic reset assertion for microcontrollers requiring tight timing margins |
| VCC Operating Range | 1.2V to 5.5V - supports operation during battery discharge and across diverse supply rails |
| Output Type | Active-low push-pull - drives logic inputs directly without pull-up resistor, reducing BOM count |
| Threshold Hysteresis | 100mV - prevents chatter during slow VCC recovery near trip point |
| Transient Immunity | Rejects VCC glitches <200µs at 100mV overdrive - eliminates false resets in noisy power environments |
Pinout & Package
MAX6378XR35+T is housed in a 3-pin SC70-3 package (2.0mm × 1.25mm × 0.95mm), optimized for space-constrained portable designs. The package is lead-free and RoHS-compliant.
| 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 (VCC < 3.50V); drives MCU RESET pin directly |
| 3 | VCC | Supply input - powers internal circuitry; accepts 1.2V–5.5V; decoupling capacitor recommended within 1cm |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low 500nA supply current | Extends battery life in maintenance-free sensor nodes by minimizing quiescent drain |
| Factory-trimmed 3.50V threshold | Eliminates need for external resistor dividers or calibration, reducing design complexity and test time |
| Push-pull active-low output | Directly interfaces with standard CMOS/TTL reset inputs without external pull-up, saving board area and cost |
| 1V minimum operating voltage | Ensures valid reset assertion even during deep battery discharge, preventing MCU lockup |
| ±2.5% threshold accuracy over temperature | Guarantees consistent trip point across environmental conditions without software compensation |
Applications
| Wearable Health Monitor | Industrial Sensor Node |
|---|---|
|
Use Scenario: Continuous ECG measurement powered by CR2032 coin cell with DC/DC step-up regulator. IC Role / Device Role / Timing Role: Brownout detector asserting MCU reset when regulated 3.3V rail drops below 3.50V due to battery depletion. Use Value: Prevents data corruption and firmware hang by guaranteeing clean reset before supply collapse, enabled by 500nA current draw and 1V operational floor. |
Use Scenario: Wireless vibration sensor deployed in factory machinery with intermittent solar charging. IC Role / Device Role / Timing Role: Power-fail monitor triggering graceful shutdown and nonvolatile save when 3.6V backup rail sags below 3.50V. Use Value: Ensures data integrity via deterministic 9.5µs reset assertion and immunity to motor-switching transients (<200µs). |
| Smart Meter Battery Backup | Low-Power BLE Beacon |
|
Use Scenario: Electricity meter retaining time/date and tariff data during AC mains failure using supercapacitor backup. IC Role / Device Role / Timing Role: Threshold detector enabling controlled switchover from main supply to backup when VCC falls to 3.50V. Use Value: Reliable transition achieved via ±2.5% threshold stability over –40°C to +85°C and hysteresis preventing oscillation during switchover. |
Use Scenario: Asset tracker reporting location every 5 minutes using AA alkaline cells and boost converter. IC Role / Device Role / Timing Role: System supervisor asserting reset if 3.3V rail collapses during RF transmission surge. Use Value: Maintains functional safety with push-pull output driving nRESET without external components, reducing bill-of-materials. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3123QDBVRQ1 | 3.5V threshold, 1.8µA supply current, SOT23-3 package, automotive-grade (–40°C to +125°C) | Higher supply current reduces battery life; wider temp range suits under-hood use but over-spec for consumer portables | Select when AEC-Q100 qualification and extended temperature operation are required, accepting higher quiescent power |
| APX803SA-35SA-7 | 3.5V threshold, 1.1µA supply current, SOT23-3, ±1.5% initial accuracy (25°C only) | Lower initial accuracy and no guaranteed tempco spec; lacks transient immunity characterization | Choose for cost-sensitive, room-temperature applications where full industrial temp range and glitch rejection are not critical |
Compared with TPS3123QDBVRQ1 and APX803SA-35SA-7, the MAX6378XR35+T delivers superior battery runtime via 500nA current, verified ±2.5% accuracy over full temperature range, and documented transient immunity - making it optimal for long-life, field-deployed portable electronics.
Availability
MAX6378XR35+T is available at Aetrix Electronics and suitable for wearable health monitors, industrial sensor nodes, smart meter battery backup systems, and low-power BLE beacons requiring stable component supply and long-term obsolescence management.
Supply support for MAX6378XR35+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) is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and consumer applications.
The MAX6375–MAX6380 family was engineered specifically for ultra-low-power voltage monitoring in battery-critical systems, prioritizing nanoscale quiescent current, factory-trimmed accuracy, and robust transient rejection without external components.
FAQ
What is the exact factory-trimmed threshold voltage of MAX6378XR35+T?
The MAX6378XR35+T has a nominal threshold voltage of 3.50V, with ±2.5% tolerance guaranteed over the full –40°C to +85°C operating temperature range. This value is laser-trimmed at wafer sort and confirmed per Electrical Characteristics table in the datasheet; no external adjustment is needed for MAX6378XR35+T to achieve this specification.
Does MAX6378XR35+T require external components to operate?
No, MAX6378XR35+T requires no external components for basic operation. Its precision bandgap reference, comparator, and threshold-setting resistors are fully integrated. A 0.1µF ceramic decoupling capacitor on VCC is recommended but not mandatory for most applications; no pull-up resistor is needed due to its push-pull output architecture.
What package type and dimensions does MAX6378XR35+T use?
MAX6378XR35+T uses the SC70-3 package: 2.0mm × 1.25mm × 0.95mm body size with gull-wing leads. Pin 1 is GND, Pin 2 is OUT, and Pin 3 is VCC. The device is lead-free and RoHS-compliant, marked with top-side code "ADS" per Maxim's marking table for R35 variants in SC70.
How does MAX6378XR35+T handle power supply transients?
MAX6378XR35+T rejects short negative-going VCC transients: it will not assert output for glitches shorter than 200µs when VCC dips 100mV below the 3.50V threshold. This immunity is characterized in the Typical Operating Characteristics graph "Maximum Transient Duration vs. Threshold Overdrive" and ensures reliable reset behavior in electrically noisy environments.
Is MAX6378XR35+T compatible with 1.8V or 2.5V logic systems?
Yes, MAX6378XR35+T is compatible with 1.8V and 2.5V logic systems because its push-pull output drives to within 0.4V of GND (VOL) and to 0.8×VCC (VOH) under load, meeting standard CMOS input thresholds. When VCC ≥ 2.1V, VOL ≤ 0.4V satisfies 1.8V logic low requirement; VOH remains valid across its 1.2V–5.5V supply range.
MAX6378XR35+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Voltage Detector
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 3.5V
- 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:
- SC-70-3
MAX6378XR35+T FAQ
1.How can I place an order for MAX6378XR35+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6378XR35+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 MAX6378XR35+T reliable?
The price and inventory of MAX6378XR35+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6378XR35+T is usually 5 days.
3.What payment methods are accepted for MAX6378XR35+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6378XR35+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6378XR35+T?
MAX6378XR35+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6378XR35+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 MAX6378XR35+T?
For technical support, including MAX6378XR35+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6378XR35+T requirements.
6.How does Aetrix verify that MAX6378XR35+T is sourced from the original manufacturer or authorized distributors?
All MAX6378XR35+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 MAX6378XR35+T meets industry standards.
7.What is the process for return or replacement of MAX6378XR35+T?
All MAX6378XR35+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6378XR35+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 MAX6378XR35+T part is unused and in its original packaging.
Return procedure for MAX6378XR35+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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