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Analog Devices Inc./Maxim Integrated MAX6377XR23
- Part No.:
- MAX6377XR23
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6377XR23.pdf
- Description:
- IC SUPERVISOR UL LO PWR VOLT DET
- Quantity:
- Payment:
- Shipping:
Inventory:617
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Product details
Overview
MAX6377XR23 from Maxim Integrated is an ultra-low-power, open-drain, active-low voltage detector designed for precision supply monitoring in battery-powered systems. It features a factory-trimmed 2.32V threshold (±2.5% over temperature), 500nA supply current, and operates from 1.2V to 5.5V VCC. It asserts OUT low when VCC falls below VTH and is used in portable equipment power sequencing and Li+-battery undervoltage lockout.
For engineers reviewing the MAX6377XR23 datasheet, MAX6377XR23 pinout, MAX6377XR23 application, or MAX6377XR23 equivalent, this page delivers verified electrical parameters, SC70-3 package details, real-world use cases in battery management and power sequencing, and two validated alternative parts with documented functional and interface differences.
Technical Context
The MAX6377XR23 implements a precision bandgap reference and comparator with internally trimmed resistors to set its 2.32V trip point. Its open-drain output requires an external pull-up and sinks up to 100µA while asserted, enabling flexible logic-level interfacing across supply domains.
It ignores fast VCC transients - rejecting negative glitches up to 200µs at 20mV overdrive - and guarantees correct output state down to VCC = 1V. Propagation delay is 6.3µs (typ) for falling edge, with ±2.5% threshold accuracy over –40°C to +85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.32V (factory-trimmed, ±2.5% over –40°C to +85°C) |
| Supply Current | 500nA (enables >10-year battery life in coin-cell applications) |
| Output Type | Active-low open-drain (requires external pull-up; compatible with 1.8V–5.5V logic) |
| VCC Operating Range | 1.2V to 5.5V (ensures valid reset assertion even during deep brownout) |
| Propagation Delay | 6.3µs (typ, falling edge; enables fast system response to supply collapse) |
| Threshold Hysteresis | 100mV (prevents chatter during slow VCC recovery near trip point) |
| Tempco | 40ppm/°C (low drift supports stable operation across industrial temperature range) |
Pinout & Package
MAX6377XR23 is housed in a 3-pin SC70-3 package (2.0mm × 2.1mm × 0.95mm), optimized for space-constrained portable designs. The package is RoHS-compliant and available in lead-free variant (replace "-T" with "+T" in order code).
| 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 open-drain output; sinks current when VCC < VTH; requires external pull-up resistor to host logic rail |
| 3 | VCC | Supply input (1.2V–5.5V); powers internal circuitry and defines detection domain; decoupling capacitor recommended |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low ICC | 500nA typical - extends shelf life and runtime in energy-harvesting and IoT sensor nodes |
| Factory-trimmed VTH | 2.32V with ±2.5% tolerance over full temperature range - eliminates calibration and external resistor networks |
| Open-drain output | Supports wired-OR reset buses and mixed-voltage system interfacing (e.g., 3.3V detector driving 1.8V microcontroller) |
| Transient immunity | Rejects VCC glitches ≤200µs at 20mV overdrive - prevents false resets in noisy DC/DC environments |
| No external components | Self-contained detection function - reduces BOM count, PCB area, and qualification effort |
Applications
| Battery Undervoltage Lockout | Power Sequencing Control |
|---|---|
|
Use Scenario: Monitors Li+ cell voltage during discharge to prevent deep depletion and irreversible capacity loss. IC Role / Device Role / Timing Role: Voltage detector asserting active-low reset signal to disable load switch or halt MCU execution before cell drops below 2.32V. Use Value: Enables precise 2.32V cutoff without trimming, preserving battery health and extending usable cycle count. |
Use Scenario: Coordinates startup sequence of multi-rail power supplies (e.g., 3.3V and 1.2V rails) in FPGA or SoC systems. IC Role / Device Role / Timing Role: Detects stabilization of primary rail and triggers enable signal for secondary regulator via open-drain wired-OR bus. Use Value: Guarantees clean, glitch-free power-up timing with 6.3µs propagation delay and no external RC timing components. |
| Portable Equipment Supervision | Low-Power Microcontroller Reset |
|
Use Scenario: Provides reliable reset supervision for wearables and medical sensors powered by CR2032 coin cells. IC Role / Device Role / Timing Role: Active-low open-drain output pulls microcontroller RESET# low during brownout; pulled up to same rail as MCU I/O. Use Value: 500nA quiescent current minimizes standby drain, supporting >10-year shelf life with minimal voltage droop on small batteries. |
Use Scenario: Ensures deterministic reset of ARM Cortex-M0+ MCUs during cold start or battery insertion in handheld tools. IC Role / Device Role / Timing Role: Voltage detector with guaranteed output state down to VCC = 1V - maintains valid reset assertion even under weak battery conditions. Use Value: Prevents MCU runaway or undefined state during marginal supply conditions, improving field reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803EB23DBZR | 2.32V threshold, push-pull active-low output, 350nA ICC, SOT23-3 only | Requires no pull-up but cannot share reset bus; incompatible with wired-OR topologies | Select when board layout prohibits external pull-up or when driving single-load reset lines |
| APX803S-23SA-7 | 2.32V threshold, open-drain active-low, 600nA ICC, SOT23-3 only | Same interface behavior but higher supply current; slightly lower tempco (30ppm/°C) | Select when SOT23-3 footprint is fixed and minor ICC increase is acceptable |
Compared with TLV803EB23DBZR and APX803S-23SA-7, the MAX6377XR23 uniquely combines SC70-3 packaging, 500nA ICC, and guaranteed 1V operation - making it optimal for ultra-compact, long-life battery systems requiring shared reset busing.
Availability
MAX6377XR23 is available at Aetrix Electronics and suitable for portable equipment supervision, battery undervoltage lockout, and power sequencing control requiring stable component supply, tape-and-reel delivery, and long-term lifecycle support.
Supply support for MAX6377XR23 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 and mixed-signal ICs for power, sensing, and interface applications in industrial, automotive, and consumer markets.
The MAX6375–MAX6380 family was engineered specifically for ultra-low-power supply monitoring in space- and energy-constrained portable electronics, delivering precision thresholds and nanoscale current draw in minimal footprints.
FAQ
What is the exact reset threshold voltage of the MAX6377XR23?
The MAX6377XR23 has a factory-trimmed nominal reset threshold of 2.32V, with guaranteed tolerance of ±2.5% over the full operating temperature range (–40°C to +85°C). At +25°C, the typical threshold is 2.320V, and the min/max limits are 2.262V and 2.375V respectively per Table 1 in the datasheet. This value is laser-trimmed during production and requires no external adjustment.
Does the MAX6377XR23 require an external pull-up resistor on its OUT pin?
Yes, the MAX6377XR23 features an open-drain output and requires an external pull-up resistor connected between the OUT pin and the target logic rail (up to 5.5V). The resistor value must be selected to ensure VOL ≤ 0.4V at ISINK = 100µA while providing sufficient drive for connected inputs - typically 10kΩ to 100kΩ depending on bus capacitance and logic family.
What package type is used for the MAX6377XR23, and what are its dimensions?
The MAX6377XR23 uses the SC70-3 package: a 3-pin surface-mount outline measuring 2.0mm × 2.1mm × 0.95mm (L × W × H). Pin 1 is GND, Pin 2 is OUT, and Pin 3 is VCC. The SC70-3 footprint is smaller than SOT23-3 and supports high-density PCB layouts common in wearables and hearing aids.
Can the MAX6377XR23 operate reliably at VCC = 1.2V?
Yes, the MAX6377XR23 is fully specified to operate and assert a valid output state down to VCC = 1.2V, and its output remains correctly defined even as low as VCC = 1.0V. This ensures robust reset generation during deep brownout conditions - critical for maintaining system integrity in battery-powered devices nearing end-of-discharge.
How does the MAX6377XR23 handle short voltage transients on the VCC line?
The MAX6377XR23 incorporates built-in transient immunity: it ignores negative-going VCC glitches shorter than ~200µs at 20mV overdrive (i.e., VCC dips to VTH − 20mV). This rejection window scales inversely with overdrive amplitude - larger dips are rejected for shorter durations - preventing false resets caused by switching noise or load transients in DC/DC converter outputs.
MAX6377XR23 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:
- 2.32V
- 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
MAX6377XR23 FAQ
1.How can I place an order for MAX6377XR23 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6377XR23 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 MAX6377XR23 reliable?
The price and inventory of MAX6377XR23 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6377XR23 is usually 5 days.
3.What payment methods are accepted for MAX6377XR23?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6377XR23 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6377XR23?
MAX6377XR23 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6377XR23 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 MAX6377XR23?
For technical support, including MAX6377XR23 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6377XR23 requirements.
6.How does Aetrix verify that MAX6377XR23 is sourced from the original manufacturer or authorized distributors?
All MAX6377XR23 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 MAX6377XR23 meets industry standards.
7.What is the process for return or replacement of MAX6377XR23?
All MAX6377XR23 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6377XR23, 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 MAX6377XR23 part is unused and in its original packaging.
Return procedure for MAX6377XR23:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6377XR23 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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