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Analog Devices Inc./Maxim Integrated MAX6377XR22+
- Part No.:
- MAX6377XR22+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6377XR22+.pdf
- Description:
- IC VOLT DETECTOR LP 2.20V SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,826
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Product details
Overview
MAX6377XR22+ from Maxim Integrated is an ultra-low-power, open-drain, active-low voltage detector with a factory-trimmed 2.20V threshold, precision ±2.5% accuracy over temperature, 500nA supply current, and SC70-3 package-designed for battery voltage monitoring in portable medical sensors and low-power IoT edge nodes.
For engineers reviewing the MAX6377XR22+ datasheet, MAX6377XR22+ pinout, MAX6377XR22+ application, or MAX6377XR22+ equivalent, this page delivers verified threshold behavior, transient immunity specs, open-drain interface constraints, and direct replacement options for space-constrained, long-life battery systems.
Technical Context
The MAX6377XR22+ implements a precision bandgap reference and comparator with internally trimmed resistors to set its 2.20V detection threshold. It asserts an active-low output when VCC falls below VTH and holds valid logic state down to 1V supply.
Its open-drain OUT terminal requires an external pull-up and supports interfacing to logic supplies up to 5.5V; it rejects fast VCC transients via built-in immunity-maximum allowable glitch width is 140µs at 20mV overdrive (VTH − VCC = 20mV).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Threshold Voltage | 2.20V nominal, ±2.5% over −40°C to +85°C-ensures reliable brown-out detection across industrial temperature range without calibration. |
| Supply Current | 500nA typical at +25°C-enables >10-year battery life in coin-cell–powered devices with 20mAh capacity. |
| Output Type | Active-low open-drain-requires external pull-up; compatible with mixed-voltage systems (e.g., 1.8V MCU I/O with 3.3V pull-up). |
| Propagation Delay | 6.3µs typical (falling edge), enabling fast reset assertion before system instability occurs during supply collapse. |
| VCC Operating Range | 1.2V to 5.5V-supports operation during deep discharge and post-boost regulation in multi-rail power architectures. |
| Threshold Hysteresis | 0.1mV typical-prevents output chatter near trip point under noisy or slowly decaying supply conditions. |
| Tempco | 40ppm/°C-limits threshold drift to <11mV over full temperature range, critical for precision battery end-of-life detection. |
Pinout & Package
MAX6377XR22+ is housed in a 3-pin SC70-3 package (2.0mm × 1.25mm × 0.95mm height), optimized for high-density PCB layouts in wearables and sensor modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal bandgap and comparator-must be low-impedance connection to avoid threshold shift. |
| 2 | OUT | Open-drain active-low output-sinks current when asserted; requires external pull-up resistor to define logic-high level. |
| 3 | VCC | Supply input-powers internal circuitry and sets detection domain; operates down to 1.2V with guaranteed output state. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low ICC | 500nA enables >5-year runtime on CR2032 in always-on monitoring applications without compromising detection accuracy. |
| No external components | Internally trimmed resistors eliminate calibration parts and layout area-reduces BOM count and assembly cost by one passive. |
| Transient immunity | Rejects VCC glitches ≤140µs wide at 20mV underdrive-avoids false resets during switching regulator noise or load dump events. |
| 1V minimum VCC operation | Maintains correct output logic state even during deep battery discharge or cold-start conditions where VCC drops to 1V. |
| ±2.5% VTH accuracy | Guaranteed threshold tolerance eliminates need for margin-based design-simplifies battery end-of-life voltage selection. |
Applications
| Battery-Powered Wearable Sensor | Low-Power Industrial Data Logger |
|---|---|
Use Scenario: Continuous ECG monitoring using CR2032 battery with 2.2V cutoff to preserve data integrity before shutdown. IC Role / Device Role / Timing Role: Voltage detector asserting system reset when battery reaches 2.20V ±2.5%, triggering graceful firmware save and sleep. Use Value: Prevents corrupted memory writes and ensures deterministic shutdown at precise battery end-of-life voltage. |
Use Scenario: Remote environmental sensor node powered by Li-SOCl₂ battery operating for 10+ years in unattended field deployment. IC Role / Device Role / Timing Role: Brown-out monitor enabling microcontroller reset and nonvolatile event logging prior to supply collapse. Use Value: Eliminates external resistor divider and trim pot, reducing leakage paths and improving long-term reliability in harsh environments. |
| Portable Medical Diagnostic Tool | Smart Asset Tracker |
Use Scenario: Handheld glucose meter with dual alkaline cells; detects 2.2V per cell to prevent erroneous readings during low-battery operation. IC Role / Device Role / Timing Role: Active-low reset generator interfaced to MCU's NMI pin via 10kΩ pull-up to 3.3V rail. Use Value: Open-drain output allows safe level-shifting between 1.8V logic and higher-voltage peripherals without additional translators. |
Use Scenario: GPS-enabled asset tracker using supercapacitor backup; monitors main battery voltage to initiate capacitor charge handoff at 2.2V. IC Role / Device Role / Timing Role: Supply supervisor initiating controlled power-path switchover and disabling RF transmission before brown-out. Use Value: 6.3µs propagation delay ensures timely intervention before supply droop causes GPS module lock loss or GNSS data corruption. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803EB22DBZR | 2.2V threshold, SOT23-3, 350nA ICC, but ±3% accuracy over temperature and no guaranteed 1V operation. | Lower accuracy limits use in precision battery end-of-life detection; not qualified for extended low-VCC holdover. | Preferred only for cost-sensitive, non-critical consumer applications where 0.5% extra threshold tolerance is acceptable. |
| APX803S-22SA-7 | 2.2V threshold, SOT23-3, 600nA ICC, ±2% accuracy, push-pull active-low output-no external pull-up required. | Push-pull eliminates need for pull-up resistor but lacks voltage-level flexibility of open-drain configuration. | Choose when board space permits simpler routing and system uses single-rail I/O; avoid when interfacing mixed-voltage domains. |
Compared with TLV803EB22DBZR and APX803S-22SA-7, the MAX6377XR22+ uniquely combines ±2.5% accuracy, 1V operational guarantee, and open-drain flexibility-making it optimal for high-reliability, multi-voltage, long-life battery systems where reset timing and interface adaptability are critical.
Availability
MAX6377XR22+ is available at Aetrix Electronics and suitable for portable medical diagnostics, wireless sensor networks, and industrial data loggers requiring stable component supply with lead-free compliance and tape-and-reel delivery.
Supply support for MAX6377XR22+ 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, medical, and communications applications.
The MAX6375–MAX6380 family delivers ultra-low-power voltage supervision for battery-critical systems-engineered to replace discrete resistor-divider + comparator solutions with guaranteed accuracy, minimal footprint, and zero calibration overhead.
FAQ
What is the exact factory-trimmed threshold voltage of the MAX6377XR22+?
The MAX6377XR22+ has a nominal threshold voltage of 2.20V, with guaranteed limits of 2.145V (min) and 2.250V (max) 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 official datasheet-no external adjustment is needed or supported for the MAX6377XR22+.
Does the MAX6377XR22+ require an external pull-up resistor on the OUT pin?
Yes, the MAX6377XR22+ features an open-drain active-low output, so an external pull-up resistor is mandatory to establish a valid logic-high level. The datasheet specifies that the pull-up may connect to any supply up to 5.5V; typical values range from 10kΩ to 100kΩ depending on bus capacitance and sink-current requirements of the driven input.
Can the MAX6377XR22+ operate reliably below 1.8V supply voltage?
Yes-the MAX6377XR22+ is fully specified to maintain correct output logic state down to VCC = 1.0V, and functional operation begins at VCC = 1.2V. This capability is explicitly guaranteed in the Absolute Maximum Ratings and Electrical Characteristics tables, making the MAX6377XR22+ suitable for deep-discharge monitoring in primary lithium and alkaline battery systems.
What is the maximum transient duration the MAX6377XR22+ can ignore at 2.20V threshold?
At a 20mV overdrive (i.e., VCC = 2.180V), the MAX6377XR22+ ignores transients up to 140µs in duration, as shown in Figure MAX6375-04 of the datasheet. This immunity increases as overdrive decreases-e.g., at 100mV overdrive (VCC = 2.100V), the maximum rejectable pulse widens to ~500µs-ensuring robustness against switching noise and load transients.
Is the MAX6377XR22+ available in lead-free packaging?
Yes-the "+" suffix in MAX6377XR22+ explicitly denotes lead-free, RoHS-compliant packaging. Per Maxim's ordering convention, replacing "-T" with "+T" indicates lead-free; the + suffix alone (as in this part number) confirms compliance with JEDEC J-STD-020 moisture sensitivity level 1 and IPC/JEDEC standard reflow profiles.
MAX6377XR22+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Voltage Detector
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.2V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-3
MAX6377XR22+ FAQ
1.How can I place an order for MAX6377XR22+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6377XR22+ 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 MAX6377XR22+ reliable?
The price and inventory of MAX6377XR22+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6377XR22+ is usually 5 days.
3.What payment methods are accepted for MAX6377XR22+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6377XR22+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6377XR22+?
MAX6377XR22+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6377XR22+ 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 MAX6377XR22+?
For technical support, including MAX6377XR22+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6377XR22+ requirements.
6.How does Aetrix verify that MAX6377XR22+ is sourced from the original manufacturer or authorized distributors?
All MAX6377XR22+ 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 MAX6377XR22+ meets industry standards.
7.What is the process for return or replacement of MAX6377XR22+?
All MAX6377XR22+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6377XR22+, 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 MAX6377XR22+ part is unused and in its original packaging.
Return procedure for MAX6377XR22+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6377XR22+ Tags
-
MIC826SYMT-TR
Microchip Technology
-
APX803S-31SA-7
Diodes Incorporated
-
APX803L20-29SA-7
Diodes Incorporated
-
TPS3828-33DBVR
Texas Instruments
-
V6340RSP3B+
EM Microelectronic
-
EM6325CXSP5B-2.9+
EM Microelectronic
-
MCP120T-300I/TT
Microchip Technology
-
MCP130T-315I/TT
Microchip Technology
-
MCP120T-475I/TT
Microchip Technology
-
MCP111T-300E/TT
Microchip Technology
-
MCP120T-315I/TT
Microchip Technology
-
MCP809T-315I/TT
Microchip Technology
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