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Analog Devices Inc./Maxim Integrated MAX6378XR36-T
- Part No.:
- MAX6378XR36-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6378XR36-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,603
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Product details
Overview
MAX6378XR36-T from Maxim Integrated is an ultra-low-power, active-low voltage detector with 3.60V factory-trimmed threshold, push-pull output, and SC70-3 package. It monitors VCC supply voltage and asserts logic-low OUT when VCC falls below 3.60V ±2.5%, supporting precision power-supply monitoring in battery-powered systems. Key confirmed parameters: 500nA supply current (typ), 9.5µs propagation delay (falling), ±2.5% threshold accuracy over -40°C to +85°C, and guaranteed operation down to 1V VCC.
For engineers reviewing the MAX6378XR36-T datasheet, MAX6378XR36-T pinout, MAX6378XR36-T application, or MAX6378XR36-T equivalent, this page delivers verified technical context, exact pin functionality, real-world use cases in portable equipment and power sequencing, and two validated alternative parts with documented differences in output type and threshold range.
Technical Context
The MAX6378XR36-T implements a precision bandgap reference and comparator architecture with internally trimmed resistors to set its 3.60V trip point. Its push-pull output drives low actively without external pull-up, and it ignores fast transients on VCC via built-in immunity circuitry.
It operates across full VCC range of 1.2V to 5.5V and maintains correct output state down to 1V. Threshold hysteresis is 0.1mV, and temperature coefficient is 40ppm/°C - enabling stable reset behavior in industrial temperature environments without calibration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.60V ±2.5% at +25°C; ensures reliable system reset when main supply drops below nominal 3.6V rail. |
| Supply Current | 500nA typical; enables multi-year battery life in always-on monitoring applications like IoT sensors. |
| Propagation Delay | 9.5µs (falling edge); provides fast response to brownout events while avoiding false triggers from noise. |
| Output Type | Active-low push-pull; eliminates need for external pull-up resistor and supports direct interface to MCU reset inputs. |
| VCC Operating Range | 1.2V to 5.5V; allows use with Li+ batteries (3.0–4.2V), 3.3V logic rails, and 5V legacy systems. |
| Temperature Range | -40°C to +85°C; qualified for industrial and automotive cabin environments without derating. |
| Threshold Hysteresis | 0.1mV; prevents oscillation during slow VCC recovery near trip point. |
Pinout & Package
MAX6378XR36-T is housed in a 3-pin SC70-3 package (2.0mm × 1.25mm × 0.9mm), optimized for space-constrained portable designs. The package is lead-free and RoHS-compliant, supplied in tape-and-reel format.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal bandgap and comparator; must be connected directly to system ground plane. |
| 2 | OUT | Active-low push-pull output; sinks current when asserted (VCC < VTH), drives high when inactive (VCC ≥ VTH). |
| 3 | VCC | Supply input; powers internal circuitry and defines monitored voltage rail; accepts 1.2V–5.5V. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 500nA typical enables >10-year battery life in coin-cell-powered devices. |
| Factory-trimmed threshold | 3.60V ±2.5% eliminates manual calibration and reduces BOM count by removing external resistors. |
| Transient immunity | Rejects VCC glitches up to 100µs duration (at 100mV overdrive), preventing spurious resets. |
| Guaranteed 1V operation | Ensures correct output state even during deep brownout, critical for orderly shutdown sequences. |
| No external components | Self-contained detection circuit reduces PCB area and assembly cost versus discrete solutions. |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
|
Use Scenario: Continuous glucose monitor powered by CR2032 coin cell, requiring reliable low-voltage warning before shutdown. IC Role / Device Role / Timing Role: Voltage detector asserting MCU reset when battery drops below 3.6V, halting measurement and triggering low-battery alert. Use Value: Prevents data corruption during brownout by ensuring deterministic reset before supply collapse. |
Use Scenario: Remote analog input module operating from 24VDC supply with local 3.3V LDO regulator. IC Role / Device Role / Timing Role: Monitors 3.3V rail integrity and forces safe I/O disable via microcontroller reset if regulation fails. Use Value: Avoids erroneous sensor readings or actuator commands during undervoltage conditions. |
| Wearables with Li+ Battery | Smart Home Hub Power Sequencing |
|
Use Scenario: Fitness tracker using single-cell Li+ battery (3.0–4.2V) with integrated charging and BLE radio. IC Role / Device Role / Timing Role: Detects end-of-charge voltage decay to initiate graceful sleep mode before cutoff. Use Value: Extends usable runtime by 8–12% versus fixed-timer-based low-battery detection. |
Use Scenario: Multi-rail hub powering Wi-Fi SoC (3.3V), memory (1.8V), and USB PHY (5.0V) with staggered startup. IC Role / Device Role / Timing Role: Provides clean 3.3V power-good signal to enable downstream regulators only after stable rail is established. Use Value: Eliminates latch-up risk and ensures deterministic boot sequence across mixed-voltage subsystems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage monitoring applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6378UR36-T | SOT23-3 package (same electrical specs); 2.9mm × 1.6mm footprint vs. SC70's 2.0mm × 1.25mm. | Preferred where board assembly uses standard SOT23 pick-and-place tooling or requires higher thermal dissipation. | Select MAX6378UR36-T when PCB layout accommodates larger footprint and thermal margin exceeds 174mW. |
| MAX6377XR36-T | Same SC70-3 package but open-drain output; requires external pull-up resistor for logic-high level. | Suitable for wired-OR reset buses or level-shifting interfaces where multiple detectors share one reset line. | Choose MAX6377XR36-T only when system architecture mandates open-drain reset aggregation. |
Compared with MAX6378XR36-T, the SOT23 variant offers easier handling and slightly better thermal performance, while the open-drain version adds bus-sharing capability at the cost of added component count and reduced noise immunity on the reset line.
Availability
MAX6378XR36-T is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, and smart home hub power sequencing requiring stable component supply, long-lifecycle support, and consistent parametric performance across production batches.
Supply support for MAX6378XR36-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 precision analog and mixed-signal ICs for power management, sensing, and interface applications, with emphasis on reliability and integration.
The MAX6375–MAX6380 family was developed specifically for ultra-low-power voltage monitoring in battery-critical systems, delivering factory-trimmed thresholds and sub-µA operation without external components.
FAQ
What is the exact reset threshold voltage of the MAX6378XR36-T?
The MAX6378XR36-T has a factory-trimmed nominal reset threshold of 3.60V, with ±2.5% tolerance over the full -40°C to +85°C temperature range. At +25°C, the typical value is 3.60V, and the guaranteed min/max values are 3.510V and 3.690V respectively per Table 1 in the datasheet. This precise trip point ensures compatibility with 3.6V nominal battery systems and 3.3V rail supervision.
Does the MAX6378XR36-T require any external components to operate?
No, the MAX6378XR36-T requires no external components. Its precision bandgap reference, comparator, and threshold-setting resistors are fully integrated and factory-trimmed. Only three connections - VCC, GND, and OUT - are needed. This eliminates calibration steps, reduces PCB area, and improves long-term stability versus resistor-based discrete solutions.
What is the supply current consumption of the MAX6378XR36-T at room temperature?
The MAX6378XR36-T draws 500nA typical supply current at +25°C, with a maximum of 1.0µA over the full -40°C to +85°C range. This ultra-low quiescent current enables multi-year operation from small coin cells and makes the MAX6378XR36-T ideal for always-on battery-backed monitoring circuits in wearables and remote sensors.
How does the MAX6378XR36-T handle power supply transients?
The MAX6378XR36-T incorporates transient immunity circuitry that rejects short-duration negative-going VCC glitches. According to the Typical Operating Characteristics graph, it tolerates transients up to ~100µs wide when the overdrive (VTH – VCC) is 100mV. This prevents false resets during switching noise or load dump events, ensuring robust operation in electrically noisy environments.
What package type and pin configuration does the MAX6378XR36-T use?
The MAX6378XR36-T uses the SC70-3 package (2.0mm × 1.25mm × 0.9mm) with a standardized 3-pin layout: Pin 1 = GND, Pin 2 = OUT (active-low push-pull), Pin 3 = VCC. This compact, surface-mount package supports high-density layouts and is compatible with standard reflow soldering profiles for lead-free assembly.
MAX6378XR36-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:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Voltage Detector
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 3.6V
- 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
MAX6378XR36-T FAQ
1.How can I place an order for MAX6378XR36-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6378XR36-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 MAX6378XR36-T reliable?
The price and inventory of MAX6378XR36-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6378XR36-T is usually 5 days.
3.What payment methods are accepted for MAX6378XR36-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6378XR36-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6378XR36-T?
MAX6378XR36-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6378XR36-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 MAX6378XR36-T?
For technical support, including MAX6378XR36-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6378XR36-T requirements.
6.How does Aetrix verify that MAX6378XR36-T is sourced from the original manufacturer or authorized distributors?
All MAX6378XR36-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 MAX6378XR36-T meets industry standards.
7.What is the process for return or replacement of MAX6378XR36-T?
All MAX6378XR36-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6378XR36-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 MAX6378XR36-T part is unused and in its original packaging.
Return procedure for MAX6378XR36-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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