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Analog Devices Inc./Maxim Integrated MAX6380UR45+T
- Part No.:
- MAX6380UR45+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MAX6380UR45+T.pdf
- Description:
- IC VOLT DETECT LP 4.50V SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,232
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Product details
Overview
MAX6380UR45+T from Maxim Integrated is an ultra-low-power, open-drain, active-low voltage detector IC designed for precision power-supply monitoring in battery-powered systems. It features a factory-trimmed 4.50V threshold voltage (±2.5% over temperature), 500nA supply current at +25°C, and guaranteed operation down to VCC = 1V. It asserts a logic-low output when VCC falls below threshold and is used in portable equipment for reliable reset generation and brownout detection.
For engineers reviewing the MAX6380UR45+T datasheet, MAX6380UR45+T pinout, MAX6380UR45+T application, or MAX6380UR45+T equivalent, key selection criteria include its 4.50V trip point, open-drain output configuration, SC70/SOT23-3 package compatibility, transient immunity up to 200µs at 100mV overdrive, and support for 1.2V–5.5V VCC range with no external components required.
Technical Context
The MAX6380UR45+T implements a precision bandgap reference and comparator architecture with internally trimmed resistors to set its 4.50V threshold. Its open-drain output requires an external pull-up and sinks up to 1.6mA while asserted, enabling flexible interfacing with logic supplies up to 5.5V.
It incorporates built-in hysteresis (100mV typical) and is specifically designed to reject fast negative-going VCC transients-ignoring glitches ≤200µs wide when VCC dips 100mV below VTH-ensuring robust reset assertion without false triggering during power rail noise.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Threshold Voltage | 4.50V ±2.5% over -40°C to +85°C - ensures accurate brownout detection for 4.5V nominal rails |
| Supply Current | 500nA at +25°C - enables multi-year battery life in always-on monitoring applications |
| Output Type | Active-low, open-drain - allows wired-OR configuration and level-shifting via external pull-up |
| VCC Range | 1.2V to 5.5V - supports operation across full battery discharge and regulated supply ranges |
| Hysteresis | 100mV typical - prevents output oscillation near threshold during slow VCC recovery |
| Propagation Delay | 9.5µs max (falling edge) - provides timely reset assertion with minimal latency |
| Transient Immunity | Rejects ≤200µs negative glitches at 100mV overdrive - suppresses common power-rail noise |
Pinout & Package
MAX6380UR45+T is packaged in a 3-pin SOT23-3 (lead-free, RoHS-compliant) with gull-wing leads and 0.95mm pitch. The package measures 2.92mm × 1.3mm × 1.0mm (L × W × H) and is optimized for high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SOT23) | GND | Ground reference for internal bandgap and comparator - must be low-impedance connection to system ground plane |
| 2 (SOT23) | OUT | Open-drain, active-low output - requires external pull-up resistor to define logic-high level and sink current when asserted |
| 3 (SOT23) | VCC | Power supply input - monitors this rail directly; operates from 1.2V to 5.5V with no bypass capacitor required |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 500nA enables >10-year coin-cell operation in always-on monitoring circuits |
| Factory-trimmed threshold | 4.50V ±2.5% eliminates calibration overhead and reduces BOM count |
| Open-drain output architecture | Supports mixed-voltage systems via configurable pull-up (up to 5.5V) |
| Guaranteed operation down to 1V | Ensures valid reset state even during deep battery discharge or cold-start conditions |
| No external components required | Reduces footprint, cost, and design validation effort versus discrete supervisor solutions |
Applications
| Battery-Powered IoT Sensor Node | USB-C Power Delivery Monitor |
|---|---|
Use Scenario: A lithium-ion powered environmental sensor node sleeps for hours between transmissions and must wake only when VCC ≥4.5V to ensure stable ADC and radio operation. IC Role / Device Role / Timing Role: Voltage detector providing precise brownout reset signal to microcontroller's reset pin, preventing firmware corruption during low-VCC wake cycles. Use Value: 4.50V threshold aligns with USB-C PD minimum VBUS hold-up; 500nA current extends battery life by >30% versus µA-class alternatives. | Use Scenario: A USB-C sink device verifies that input VBUS remains above 4.5V before enabling 5V-to-3.3V buck converter and downstream logic. IC Role / Device Role / Timing Role: Supervisor IC asserting active-low reset to enable/disable power path MOSFET gate driver based on VBUS integrity. Use Value: Open-drain output interfaces directly to 3.3V logic-level gate driver; 9.5µs propagation delay ensures fast response to VBUS collapse. |
| Medical Wearable Low-Power Mode | Industrial Data Logger with Backup Battery |
Use Scenario: A wearable ECG patch uses a CR2032 coin cell and enters ultra-low-power sleep mode when battery drops below safe operating voltage. IC Role / Device Role / Timing Role: Reset supervisor generating clean, glitch-immune reset pulse to halt MCU execution and preserve SRAM contents prior to shutdown. Use Value: 200µs transient immunity prevents spurious resets during RF transmission bursts; 1V minimum VCC operation captures final battery state before cutoff. | Use Scenario: An industrial data logger switches to backup supercapacitor when main 5V supply fails, requiring precise 4.5V switchover detection. IC Role / Device Role / Timing Role: Voltage monitor triggering analog switch control logic to isolate main supply and engage backup path within defined timing window. Use Value: 100mV hysteresis prevents chatter during supply decay; SOT23-3 footprint integrates seamlessly into compact PCB layout with existing 5V regulator. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803EB33DBZR | 3.3V fixed threshold, push-pull output, 350nA ICC, SOT23-3 | Lower trip point; unsuitable for 4.5V monitoring; requires no pull-up but lacks level-shifting flexibility | Select only if system VCC nominal is 3.3V and open-drain interface is unnecessary |
| APX803S-45SA-7 | 4.5V threshold, open-drain, 800nA ICC, SOT23-3, ±2% accuracy | Slightly higher supply current; tighter threshold tolerance; same pinout and functional behavior | Preferred where ±2% accuracy is mandatory and 300nA extra current is acceptable |
Compared with TLV803EB33DBZR and APX803S-45SA-7, the MAX6380UR45+T uniquely balances 4.50V precision, 500nA ultra-low power, and open-drain flexibility in a standard SOT23-3 footprint-making it optimal for battery-critical 4.5V monitoring where level translation or wired-OR reset buses are needed.
Availability
MAX6380UR45+T is available at Aetrix Electronics and suitable for portable medical devices, USB-C accessories, industrial data loggers, and battery-backed IoT sensors requiring stable component supply with long-term lifecycle assurance.
Supply support for MAX6380UR45+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 designed specifically for ultra-low-power voltage monitoring in space-constrained, battery-operated systems-delivering precision reset functionality without external components or calibration.
FAQ
What is the exact factory-trimmed threshold voltage of the MAX6380UR45+T?
The MAX6380UR45+T has a factory-trimmed nominal threshold voltage of 4.50V, with guaranteed accuracy of ±2.5% over the full operating temperature range (-40°C to +85°C). This value is confirmed in Table 1 of the official datasheet under suffix "R45", and applies specifically to the MAX6380 series (3.30V–4.63V range). The MAX6380UR45+T maintains this specification in both SOT23-3 and SC70 packages.
Does the MAX6380UR45+T require an external pull-up resistor on the OUT pin?
Yes, the MAX6380UR45+T features an open-drain, active-low output and requires an external pull-up resistor connected between OUT and a logic supply (up to 5.5V). Typical values range from 10kΩ to 100kΩ depending on bus capacitance and rise-time requirements. Without this resistor, the output cannot assert a valid logic-high level, and the MAX6380UR45+T will not function correctly in most digital interface configurations.
Can the MAX6380UR45+T operate reliably at VCC = 1.2V?
Yes, the MAX6380UR45+T is fully specified to operate with VCC as low as 1.2V and guarantees correct output logic state (active-low when VCC < VTH) down to 1V. This capability is explicitly stated in the General Description and Electrical Characteristics sections of the datasheet, enabling use in deeply discharged battery scenarios where other supervisors fail to assert reset.
What is the maximum transient duration the MAX6380UR45+T can ignore at 100mV overdrive?
At a threshold overdrive of 100mV (i.e., VCC = VTH − 100mV = 4.40V), the MAX6380UR45+T can ignore negative-going transients up to 200µs in duration, as shown in Figure MAX6375-04 of the datasheet. This transient immunity is critical for rejecting switching noise or load-dump spikes without generating false reset pulses.
Is the MAX6380UR45+T pin-compatible with other parts in the MAX6375–MAX6380 family?
Yes, all MAX6375–MAX6380 variants-including the MAX6380UR45+T-are pin-compatible in both SOT23-3 and SC70-3 packages. Pin 1 is GND, Pin 2 is OUT, and Pin 3 is VCC across the entire family. However, output logic type (open-drain vs. push-pull) and threshold voltage differ by part number, so electrical compatibility must be verified per application requirements-not just pinout.
MAX6380UR45+T 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:
- 4.5V
- 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
MAX6380UR45+T FAQ
1.How can I place an order for MAX6380UR45+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6380UR45+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 MAX6380UR45+T reliable?
The price and inventory of MAX6380UR45+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6380UR45+T is usually 5 days.
3.What payment methods are accepted for MAX6380UR45+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6380UR45+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6380UR45+T?
MAX6380UR45+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6380UR45+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 MAX6380UR45+T?
For technical support, including MAX6380UR45+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6380UR45+T requirements.
6.How does Aetrix verify that MAX6380UR45+T is sourced from the original manufacturer or authorized distributors?
All MAX6380UR45+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 MAX6380UR45+T meets industry standards.
7.What is the process for return or replacement of MAX6380UR45+T?
All MAX6380UR45+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6380UR45+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 MAX6380UR45+T part is unused and in its original packaging.
Return procedure for MAX6380UR45+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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