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Analog Devices Inc./Maxim Integrated MAX6377UR30
- Part No.:
- MAX6377UR30
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MAX6377UR30.pdf
- Description:
- IC SUPERVISOR UL LO PWR VOLT DET
- Quantity:
- Payment:
- Shipping:
Inventory:3,806
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Product details
Overview
MAX6377UR30 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 3.00V threshold (±2.5% over temperature), 500nA supply current, and operates down to 1V VCC. It asserts OUT low when VCC falls below threshold and is used in portable equipment power sequencing and microcontroller reset supervision.
For engineers reviewing the MAX6377UR30 datasheet, MAX6377UR30 pinout, MAX6377UR30 application, or MAX6377UR30 equivalent, this device delivers verified threshold accuracy, transient-immune reset generation, and SOT23-3 compatibility for space-constrained embedded designs requiring reliable brownout detection with minimal quiescent power.
Technical Context
The MAX6377UR30 integrates a precision bandgap reference, comparator, and laser-trimmed resistive divider to set its 3.00V detection threshold without external components. Its internal hysteresis of 100mV prevents output chatter during slow VCC recovery.
As an open-drain active-low detector, it requires an external pull-up resistor to interface with logic inputs across varying voltage domains (up to 5.5V). It ignores transients ≤20µs at 100mV overdrive, ensuring immunity to typical supply noise.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.00V ±2.5% over -40°C to +85°C - ensures consistent brownout detection across industrial temperature range |
| Supply Current | 500nA typical at +25°C - enables multi-year operation on coin-cell batteries |
| Output Type | Active-low open-drain - supports flexible logic-level interfacing via external pull-up |
| VCC Operating Range | 1.2V to 5.5V - functions reliably during deep brownout and full-system power-up |
| Hysteresis | 100mV - prevents false resets during marginal supply recovery |
| Propagation Delay | 6.3µs typical (falling edge) - provides fast response to supply faults without excessive sensitivity |
| Threshold Tempco | 40ppm/°C - maintains tight voltage accuracy across temperature without calibration |
Pinout & Package
MAX6377UR30 is housed in a 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 connection to system ground plane |
| 2 | OUT | Open-drain active-low output - sinks up to 100µA at 0.4V (VCC ≥1.2V); requires external pull-up for logic-high state |
| 3 | VCC | Supply input - powers internal circuitry; valid from 1.2V to 5.5V; monitors itself for undervoltage condition |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low 500nA supply current | Extends battery life in always-on monitoring applications such as IoT sensors and wearables |
| Factory-trimmed 3.00V threshold | Eliminates need for external resistor networks or calibration, reducing BOM count and assembly cost |
| 100mV built-in hysteresis | Guarantees clean, chatter-free reset assertion during supply recovery without external components |
| Open-drain output with 5.5V tolerance | Enables direct interfacing to 1.8V, 3.3V, or 5V logic domains using a single pull-up resistor |
| Transient immunity (≤20µs at 100mV overdrive) | Rejects common switching noise and ESD-induced supply dips without false triggering |
Applications
| Battery-Powered Microcontroller Reset | DC-DC Converter Undervoltage Lockout |
|---|---|
Use Scenario: Supervising Li-ion battery voltage in a handheld medical device to prevent unsafe operation below 3.0V. IC Role / Device Role / Timing Role: Voltage detector asserting active-low reset to MCU upon VBAT drop below 3.00V threshold. Use Value: Prevents data corruption and flash write errors by guaranteeing clean reset before supply collapses below MCU operational minimum. |
Use Scenario: Enabling/disabling a buck converter based on input rail stability in a dual-battery backup system. IC Role / Device Role / Timing Role: Open-drain output drives enable pin of DC-DC controller; asserted low disables converter during undervoltage. Use Value: Eliminates need for discrete transistor stage - direct interface reduces component count and improves reliability. |
| Portable Equipment Power Sequencing | Low-Power Sensor Node Brownout Detection |
Use Scenario: Coordinating startup order between RF transceiver and baseband processor in a Bluetooth LE module. IC Role / Device Role / Timing Role: Generates timed reset pulse after main supply stabilizes above 3.00V, enabling controlled subsystem activation. Use Value: Ensures transceiver remains held in reset until power rails settle, avoiding spurious RF emissions during boot. |
Use Scenario: Monitoring supercapacitor charge level in an energy-harvesting environmental sensor node. IC Role / Device Role / Timing Role: Detects capacitor voltage decay below 3.00V and triggers graceful shutdown sequence via GPIO interrupt. Use Value: Enables deterministic low-power shutdown before supply drops below ADC or radio operating minimum (1.8V). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803EB30DBZR | 3.0V threshold, 350nA supply current, push-pull active-low output, SOT23-3 | Push-pull eliminates need for external pull-up; lower ICC but no open-drain flexibility | Select when system logic inputs require driven high/low without external components |
| APX803S-30SA-7 | 3.0V threshold, 800nA supply current, open-drain active-low, SOT23-3, ±2% accuracy | Slightly higher ICC and tighter threshold tolerance; same pinout and functional behavior | Select when tighter initial accuracy (±2% vs ±2.5%) is prioritized over ultra-low ICC |
Compared with TLV803EB30DBZR and APX803S-30SA-7, the MAX6377UR30 offers the lowest supply current (500nA) among SOT23-3 3.0V detectors while retaining open-drain flexibility - ideal for battery lifetime-critical designs where external pull-up is acceptable.
Availability
MAX6377UR30 is available at Aetrix Electronics and suitable for portable electronics, battery management systems, and industrial sensor nodes requiring stable component supply with guaranteed long-term availability and lead-free compliance.
Supply support for MAX6377UR30 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, sensing, and connectivity applications in industrial, automotive, and consumer markets.
The MAX6375–MAX6380 family was engineered specifically for ultra-low-power voltage monitoring in space- and energy-constrained portable systems, emphasizing sub-µA quiescent current and factory-trimmed accuracy without external components.
FAQ
What is the exact reset threshold voltage of the MAX6377UR30 and how stable is it over temperature?
The MAX6377UR30 has a nominal reset threshold of 3.00V with ±2.5% accuracy over the full -40°C to +85°C operating range. Its temperature coefficient is specified at 40ppm/°C, meaning threshold drift is limited to approximately ±12mV across a 60°C span - sufficient for robust brownout detection in battery-powered devices without recalibration.
Does the MAX6377UR30 require an external pull-up resistor, and if so, what value is recommended?
Yes, the MAX6377UR30 features an open-drain active-low output and requires an external pull-up resistor. For standard 3.3V logic interfaces, a 10kΩ resistor to 3.3V is typical; for 5V systems, values up to 100kΩ are acceptable. The resistor must ensure VOL ≤0.4V when sinking 100µA - verified in the Electrical Characteristics table for the MAX6377UR30.
Can the MAX6377UR30 operate reliably below 2.0V VCC, and what is its minimum functional supply voltage?
Yes, the MAX6377UR30 guarantees correct output logic state down to 1.0V VCC, and its specified operating range begins at 1.2V. It continues to monitor and assert reset even during deep brownout conditions - critical for graceful shutdown in systems powered by depleting batteries or supercapacitors.
How does the MAX6377UR30 handle fast supply transients, and what is its immunity specification?
The MAX6377UR30 rejects negative-going VCC transients up to 20µs in duration when the overdrive (VTH – VCC) is 100mV, per the Typical Operating Characteristics graph. This built-in transient immunity prevents false resets caused by switching noise, load dumps, or ESD events - eliminating need for additional RC filtering in most applications.
Is the MAX6377UR30 pin-compatible with other devices in the MAX6375–MAX6380 family, and what packages are supported?
Yes, the MAX6377UR30 uses the standard 3-pin SOT23-3 footprint and is pin-compatible with all members of the MAX6375–MAX6380 family in the UR (SOT23-3) variant. It shares identical pinout (VCC, GND, OUT) and electrical interface with MAX6375URxx, MAX6376URxx, and MAX6378–MAX6380URxx - enabling design reuse across different threshold voltages.
MAX6377UR30 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Voltage Detector
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 3V
- 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:
- SOT-23-3
MAX6377UR30 FAQ
1.How can I place an order for MAX6377UR30 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6377UR30 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 MAX6377UR30 reliable?
The price and inventory of MAX6377UR30 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6377UR30 is usually 5 days.
3.What payment methods are accepted for MAX6377UR30?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6377UR30 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6377UR30?
MAX6377UR30 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6377UR30 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 MAX6377UR30?
For technical support, including MAX6377UR30 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6377UR30 requirements.
6.How does Aetrix verify that MAX6377UR30 is sourced from the original manufacturer or authorized distributors?
All MAX6377UR30 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 MAX6377UR30 meets industry standards.
7.What is the process for return or replacement of MAX6377UR30?
All MAX6377UR30 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6377UR30, 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 MAX6377UR30 part is unused and in its original packaging.
Return procedure for MAX6377UR30:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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