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Analog Devices Inc./Maxim Integrated MAX6501UKP065+T
- Part No.:
- MAX6501UKP065+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Thermostats - Solid State
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6501UKP065+T.pdf
- Description:
- THERMOSTAT 65DEGC ACT LO SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,567
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Product details
Overview
MAX6501UKP065+T from Maxim Integrated is a factory-programmed, hot-temperature-threshold micropower temperature switch in SOT23-5 package, featuring +65°C trip point, ±0.5°C typical threshold accuracy, 30µA supply current, and open-drain active-low output for µP reset assertion. It operates from +2.7V to +5.5V and supports pin-selectable 2°C or 10°C hysteresis.
For engineers reviewing the MAX6501UKP065+T datasheet, MAX6501UKP065+T pinout, MAX6501UKP065+T application, or MAX6501UKP065+T equivalent, this device serves as a low-cost, self-contained thermal monitor requiring no external components-ideal for high-speed computing thermal management, fan control logic interfacing, and fail-safe overtemperature shutdown circuits.
Technical Context
The MAX6501UKP065+T integrates two on-die temperature-dependent voltage references (one positive TC, one negative TC) and a comparator to determine the precise +65°C die temperature trip point. Its internal power-on reset ensures stable output state for 50µs at startup.
Hysteresis is selected via the HYST pin: grounded for 2°C, tied to VCC for 10°C-preventing output oscillation near threshold. The open-drain TOVER output sinks up to 1.2mA and is compatible with pull-up voltages exceeding VCC, enabling flexible µP interrupt or reset interface design.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Temperature Threshold | +65°C factory-trimmed hot-trip point; asserts output when die temperature exceeds this value |
| Threshold Accuracy | ±0.5°C (typ), ±6°C (max); enables precise thermal event detection without calibration |
| Supply Voltage Range | +2.7V to +5.5V; compatible with 3.3V and 5V logic domains and battery-powered systems |
| Supply Current | 30µA (typ); minimizes self-heating (<0.042°C shift at 1mA sink) and extends battery life |
| Output Type | Active-low open-drain TOVER; interfaces directly with µP reset inputs using external 100kΩ pull-up |
| Hysteresis Options | PIN-selectable: 2°C (HYST = GND) or 10°C (HYST = VCC); prevents chatter during thermal transients |
| Package | SOT23-5; compact footprint with Pin 2 providing lowest thermal resistance to die for accurate sensing |
Pinout & Package
SOT23-5 package with exposed pad not electrically connected; Pin 2 provides lowest thermal resistance path to die and must be connected to ground with short, wide copper trace for optimal thermal coupling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 GND | Ground reference and thermal conduction path | Both pins must be connected together near chip; Pin 2 is primary thermal interface to PCB copper |
| 3 HYST | Hysteresis selection input | CMOS-compatible; drive to GND for 2°C hysteresis, to VCC for 10°C-floating prohibited |
| 4 VCC | Positive supply input | Accepts +2.7V to +5.5V; powers internal references, comparator, and output stage |
| 5 TOVER | Active-low open-drain output | Sinks current when TDIE > +65°C; requires external pull-up (100kΩ typical) to VIO or VCC |
Key Features
| Feature | Design Value |
|---|---|
| Factory-programmed +65°C trip point | Eliminates need for external resistors or calibration; ensures consistent thermal response across production units |
| ±0.5°C typical threshold accuracy | Reduces false alarms and missed events in critical thermal monitoring applications |
| No external components required | Enables drop-in thermal protection in space-constrained designs without BOM or layout overhead |
| 30µA supply current | Minimizes system power budget impact and thermal self-heating error in precision sensing |
| Pin-selectable hysteresis (2°C / 10°C) | Allows tuning of thermal deadband to match system thermal mass and response time requirements |
Applications
| Microprocessor Thermal Reset | Fan Control Activation |
|---|---|
Use Scenario: Monitoring CPU die temperature in high-speed computing platforms to prevent thermal throttling or damage. IC Role / Device Role / Timing Role: Temperature switch asserting active-low reset signal to µP when local temperature exceeds +65°C. Use Value: Enables immediate, hardware-level processor reset before thermal runaway occurs-no firmware dependency or latency. |
Use Scenario: Triggering cooling fan activation when ambient or board temperature rises above safe operating limit. IC Role / Device Role / Timing Role: Open-drain output drives fan enable line through pull-up resistor upon crossing +65°C threshold. Use Value: Provides deterministic, low-power fan start without microcontroller intervention or polling overhead. |
| Overtemperature Alarm System | Fail-Safe Thermal Shutdown |
Use Scenario: Generating audible or visual alarm when enclosure temperature exceeds industrial safety limits. IC Role / Device Role / Timing Role: TOVER output pulls down alarm circuit input, latching or driving LED/buzzer via simple transistor stage. Use Value: Delivers immediate, unambiguous thermal alert with sub-100ms response due to direct analog sensing path. |
Use Scenario: Initiating irreversible power-down sequence in power supplies or motor drivers upon critical overheating. IC Role / Device Role / Timing Role: Active-low output triggers SCR gate or latch circuit to cut main power rail when TDIE > +65°C. Use Value: Guarantees hardware-enforced shutdown independent of software state or clock domain failures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar temperature switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6501UKP075+T | +75°C trip threshold; identical accuracy, supply current, and pinout | Used where higher thermal margin is required before reset assertion | Select when system thermal derating requires later intervention point than +65°C |
| LM75BIMM-3/NOPB | I²C digital output, ±2°C accuracy, 250µA supply current, SO-8 package | Requires microcontroller interface and firmware polling; supports programmable thresholds | Choose only if digital configurability and multi-point monitoring outweigh analog simplicity and ultra-low power |
Compared with MAX6501UKP065+T, the MAX6501UKP075+T offers identical functionality with a higher trip point for relaxed thermal margins, while the LM75BIMM-3/NOPB trades analog immediacy and 8.3× higher quiescent current for digital flexibility and addressability-making it unsuitable for standalone reset or low-power always-on use cases.
Availability
MAX6501UKP065+T is available at Aetrix Electronics and suitable for microprocessor thermal reset, fan control activation, and overtemperature alarm systems requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX6501UKP065+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, mixed-signal, and power management ICs for industrial, computing, and communications applications.
The MAX6501–MAX6504 family delivers micropower, factory-trimmed temperature switches optimized for hardware-level thermal protection in space- and power-constrained systems-eliminating calibration and external components.
FAQ
What is the exact temperature trip point of the MAX6501UKP065+T?
The MAX6501UKP065+T has a factory-programmed hot-temperature threshold of +65°C. This means the TOVER output transitions low when the die temperature exceeds +65°C. The trip point is trimmed during manufacturing and specified with ±0.5°C typical accuracy over the full operating range.
Does the MAX6501UKP065+T require external components to operate?
No, the MAX6501UKP065+T requires no external components for basic operation. It functions as a complete temperature switch with internal references and comparator. Only an external pull-up resistor (typically 100kΩ) on the TOVER pin is needed to interface with a microprocessor reset input or logic circuit.
How is hysteresis configured on the MAX6501UKP065+T?
Hysteresis on the MAX6501UKP065+T is set by the voltage applied to the HYST pin: connect HYST to GND for 2°C hysteresis or to VCC for 10°C hysteresis. Leaving HYST floating increases supply current and is strictly prohibited per the datasheet.
What is the supply voltage range supported by the MAX6501UKP065+T?
The MAX6501UKP065+T operates from a single supply voltage ranging from +2.7V to +5.5V. This range supports both 3.3V and 5V logic systems and ensures reliable performance across battery discharge profiles and regulated rail variations.
Can the MAX6501UKP065+T output drive a fan directly?
The MAX6501UKP065+T features an open-drain output and cannot source current-it can only sink up to 1.2mA. To drive a fan, it must be used with an external pull-up and a driver stage (e.g., MOSFET or bipolar transistor). For direct fan control, consider the push-pull-output MAX6502UKP065+T instead.
MAX6501UKP065+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Trip Temperature Threshold:
- Hot
- Switching Temperature:
- 65°C
- Accuracy:
- ±4°C
- Current - Output (Max):
- 20mA
- Output Type:
- Open Drain
- Output:
- Active Low
- Output Function:
- /OverTemp
- Selectable Hysteresis:
- Yes
- Features:
- -
- Voltage - Supply:
- 2.7 V ~ 5.5 V
- Current - Supply:
- 30µA
- Operating Temperature:
- -55°C ~ 135°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- SOT-23-5
MAX6501UKP065+T FAQ
1.How can I place an order for MAX6501UKP065+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6501UKP065+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 MAX6501UKP065+T reliable?
The price and inventory of MAX6501UKP065+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6501UKP065+T is usually 5 days.
3.What payment methods are accepted for MAX6501UKP065+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6501UKP065+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6501UKP065+T?
MAX6501UKP065+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6501UKP065+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 MAX6501UKP065+T?
For technical support, including MAX6501UKP065+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6501UKP065+T requirements.
6.How does Aetrix verify that MAX6501UKP065+T is sourced from the original manufacturer or authorized distributors?
All MAX6501UKP065+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 MAX6501UKP065+T meets industry standards.
7.What is the process for return or replacement of MAX6501UKP065+T?
All MAX6501UKP065+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6501UKP065+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 MAX6501UKP065+T part is unused and in its original packaging.
Return procedure for MAX6501UKP065+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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