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Analog Devices Inc./Maxim Integrated MAX6502UKP065
- Part No.:
- MAX6502UKP065
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Thermostats - Solid State
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6502UKP065.pdf
- Description:
- MICROPOWER TEMPERATURE SWITCH
- Quantity:
- Payment:
- Shipping:
Inventory:288
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Product details
Overview
MAX6502UKP065 from Maxim Integrated is a factory-programmed, hot-temperature threshold silicon temperature switch with active-high push-pull output, designed for overtemperature detection in thermal management systems. It operates from +2.7V to +5.5V, consumes 30µA typical supply current, features ±0.5°C typical threshold accuracy at +65°C trip point, and offers pin-selectable 2°C or 10°C hysteresis. It is used in fan-control logic where direct drive of logic-level inputs is required.
For engineers reviewing the MAX6502UKP065 datasheet, MAX6502UKP065 pinout, MAX6502UKP065 application, or MAX6502UKP065 equivalent, key selection criteria include its +65°C factory-trimmed trip point, SOT23-5 package, push-pull output capability (VOH = VCC − 1.5V @ ISOURCE = 800µA), hysteresis configuration via HYST pin, and compatibility with industrial thermal alarm and fail-safe shutdown circuits.
Technical Context
The MAX6502UKP065 implements a fully integrated analog temperature sensing architecture using dual on-chip voltage references-one with positive and one with negative temperature coefficient-to define the precise +65°C trip point. Its internal comparator drives a push-pull output stage capable of sourcing up to 800µA and sinking up to 3.2mA, eliminating external pull-up components.
Hysteresis is controlled by the HYST pin: grounded for 2°C hysteresis or tied to VCC for 10°C hysteresis. The device includes an internal power-on reset circuit ensuring defined output state for 50µs at startup, and operates across −55°C to +125°C ambient range with die temperature tracking package temperature due to low self-heating (ΔTJ < 0.042°C under typical load).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Temperature Threshold | +65°C factory-programmed hot-trip point; asserts output high when die temperature exceeds +65°C. |
| Supply Voltage Range | +2.7V to +5.5V; supports single-supply operation in 3.3V and 5V systems without level-shifting. |
| Supply Current | 30µA typical; enables micropower thermal monitoring in battery-backed or energy-constrained systems. |
| Output Type | Active-high push-pull; directly drives CMOS/TTL logic inputs without external pull-up resistor. |
| Hysteresis Options | PIN-selectable: 2°C (HYST = GND) or 10°C (HYST = VCC); prevents output oscillation near trip point. |
| Threshold Accuracy | ±0.5°C typical over full operating range; ensures precise overtemperature response in safety-critical applications. |
| Package | SOT23-5; compact 2.9mm × 1.6mm footprint with Pin 2 optimized for lowest thermal resistance to die. |
Pinout & Package
SOT23-5 package with exposed thermal pad not electrically connected; Pin 2 provides lowest thermal resistance path to die for accurate temperature sensing. Device requires no external components for basic operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 GND | Ground reference and thermal path | Both pins must be connected to system ground; Pin 2 is thermally optimized for minimal θJA (140°C/W typical). |
| 3 HYST | Hysteresis select input | CMOS-compatible digital input: tie to GND for 2°C hysteresis, or to VCC for 10°C hysteresis; must not float. |
| 4 VCC | Positive supply input | Accepts +2.7V to +5.5V; powers internal references, comparator, and output stage. |
| 5 TOVER | Active-high push-pull output | Drives high when die temperature > +65°C; sources up to 800µA (VOH ≥ VCC − 1.5V) and sinks up to 3.2mA (VOL ≤ 0.4V). |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed +65°C threshold | Eliminates calibration effort and external sensor compensation in fixed-point overtemperature detection. |
| Push-pull output stage | Directly interfaces with fan controller ICs or logic gates without pull-up resistors, reducing BOM count and board space. |
| Pin-selectable hysteresis | Enables system-level tuning of thermal response stability-2°C for tight control, 10°C for noisy thermal environments. |
| Micropower 30µA operation | Supports always-on thermal monitoring in standby modes without compromising battery life or power budget. |
| −55°C to +125°C operating range | Validated performance across extended industrial and automotive under-hood temperature extremes. |
Applications
| Microprocessor Thermal Shutdown | Fan Speed Control |
|---|---|
Use Scenario: Monitoring CPU die temperature in embedded computing platforms to prevent thermal runaway during sustained load. IC Role / Device Role / Timing Role: Temperature switch asserting active-high signal to microcontroller's interrupt or reset input upon exceeding +65°C. Use Value: Enables deterministic thermal shutdown before silicon damage occurs; leverages push-pull output for reliable edge-triggered response without external biasing. | Use Scenario: Controlling cooling fan activation in industrial motor drives or power supplies based on heatsink temperature. IC Role / Device Role / Timing Role: Direct drive of fan enable input or PWM controller logic with active-high assertion at +65°C. Use Value: Reduces component count vs. open-drain alternatives; eliminates pull-up resistor and associated leakage path in high-reliability fan control loops. |
| Temperature Window Alarm | Fail-Safe System Monitor |
Use Scenario: Combining MAX6502UKP065 with a cold-threshold device (e.g., MAX6504UKN005) to detect out-of-range temperature windows (e.g., −5°C to +65°C). IC Role / Device Role / Timing Role: Hot-side detector in complementary pair; TOVER output ORed with cold-device output to generate unified thermal alarm. Use Value: Enables precise window-based thermal protection using only two ICs and one external resistor-no op-amps or ADC required. | Use Scenario: Dual-stage thermal protection in medical power supplies: first stage activates cooling at +45°C, second stage (MAX6502UKP065) triggers hard shutdown at +65°C. IC Role / Device Role / Timing Role: Final fail-safe overtemperature cutoff with guaranteed ±0.5°C accuracy and hysteresis to prevent nuisance tripping. Use Value: Provides independent, hardware-based thermal lockout that remains functional even if firmware fails or communication bus is corrupted. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar temperature switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM75BIMM/NOPB | Digital I²C output, ±2°C accuracy, 8-pin MSOP package, requires MCU polling and firmware handling. | Used where programmable thresholds, remote reading, or multi-sensor daisy-chaining is needed-not for autonomous hardware-triggered action. | Select MAX6502UKP065 when immediate, deterministic hardware-level response without software intervention is required. |
| TC74A0-5.0VAT | I²C interface, ±2°C accuracy, 5V-only supply, 8-pin SOIC; lacks push-pull output and pin-selectable hysteresis. | Suitable for systems with existing I²C infrastructure and tolerance for 2°C trip uncertainty; not appropriate for direct fan-enable or reset-line driving. | Choose MAX6502UKP065 for simpler, lower-latency, zero-software thermal control in cost-sensitive industrial designs. |
Compared with LM75BIMM/NOPB and TC74A0-5.0VAT, the MAX6502UKP065 delivers faster, deterministic overtemperature response via hardware-comparator architecture, eliminates MCU dependency, and reduces system-level BOM through its self-contained push-pull output and factory-trimmed +65°C threshold.
Availability
MAX6502UKP065 is available at Aetrix Electronics and suitable for industrial motor drives, embedded computing thermal management, and medical power supply safety systems requiring stable component supply and long-term lifecycle support.
Supply support for MAX6502UKP065 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, communications, and computing applications.
The MAX6501–MAX6504 family was developed to deliver low-cost, micropower, factory-calibrated temperature switches in ultra-small packages for hardware-based thermal protection without software overhead.
FAQ
What is the exact factory-programmed temperature threshold of the MAX6502UKP065?
The MAX6502UKP065 has a factory-programmed hot-temperature threshold of +65°C. This means the TOVER output transitions from low to high when the die temperature rises above +65°C. The threshold is trimmed during manufacturing and specified with ±0.5°C typical accuracy across the full −55°C to +125°C operating range, as confirmed in the official Maxim datasheet Absolute Maximum Ratings and Electrical Characteristics tables.
Does the MAX6502UKP065 require external components to operate?
No, the MAX6502UKP065 requires no external components for basic operation. Its push-pull output eliminates the need for a pull-up resistor, and its internal references and comparator are fully integrated. Only VCC decoupling (recommended 0.1µF ceramic capacitor near Pin 4) and proper grounding of Pins 1 and 2 are needed. The HYST pin must be tied to either GND or VCC-never left floating-to set hysteresis and avoid increased supply current.
How is hysteresis configured on the MAX6502UKP065, and what are the values?
Hysteresis on the MAX6502UKP065 is configured via the HYST pin (Pin 3): connect to GND for 2°C hysteresis or to VCC for 10°C hysteresis. This selection determines the temperature difference between turn-on (+65°C) and turn-off (+63°C or +55°C respectively). The actual hysteresis value depends on the programmed trip point and is verified in the Typical Operating Characteristics plot "HYSTERESIS vs. TRIP TEMPERATURE" in the MAX6502UKP065 datasheet.
What is the output drive capability of the MAX6502UKP065 TOVER pin?
The TOVER pin (Pin 5) of the MAX6502UKP065 is a push-pull output capable of sourcing up to 800µA (VOH ≥ VCC − 1.5V at VCC > 4.5V) and sinking up to 3.2mA (VOL ≤ 0.4V at VCC > 4.5V). This allows direct interfacing with standard CMOS/TTL logic inputs, fan controller enable pins, or small-signal MOSFET gates without external buffering or level translation.
Can the MAX6502UKP065 be used in a temperature window alarm with a cold-threshold device?
Yes, the MAX6502UKP065 is explicitly designed for use in temperature window alarms when paired with a cold-threshold device such as MAX6504UKN005. Its push-pull output can be wire-ORed with another MAX6502 or MAX6504 output using a single external resistor to generate a unified "out-of-range" signal. Figure 4 in the MAX6502UKP065 datasheet shows this configuration enabling precise window detection (e.g., −5°C to +65°C) with no additional active components.
MAX6502UKP065 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Bulk
- Product Status:
- Active
- Trip Temperature Threshold:
- Hot
- Switching Temperature:
- 65°C
- Accuracy:
- ±4°C
- Current - Output (Max):
- 20mA
- Output Type:
- Push-Pull
- Output:
- Active High
- Output Function:
- OverTemp
- Selectable Hysteresis:
- Yes
- Features:
- Selectable Hysteresis
- Voltage - Supply:
- 2.7 V ~ 5.5 V
- Current - Supply:
- 30µA
- Operating Temperature:
- -55°C ~ 125°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- SOT-23-5
MAX6502UKP065 FAQ
1.How can I place an order for MAX6502UKP065 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6502UKP065 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 MAX6502UKP065 reliable?
The price and inventory of MAX6502UKP065 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6502UKP065 is usually 5 days.
3.What payment methods are accepted for MAX6502UKP065?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6502UKP065 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6502UKP065?
MAX6502UKP065 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6502UKP065 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 MAX6502UKP065?
For technical support, including MAX6502UKP065 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6502UKP065 requirements.
6.How does Aetrix verify that MAX6502UKP065 is sourced from the original manufacturer or authorized distributors?
All MAX6502UKP065 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 MAX6502UKP065 meets industry standards.
7.What is the process for return or replacement of MAX6502UKP065?
All MAX6502UKP065 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6502UKP065, 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 MAX6502UKP065 part is unused and in its original packaging.
Return procedure for MAX6502UKP065:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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