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Analog Devices Inc./Maxim Integrated MAX6502UKP075+
- Part No.:
- MAX6502UKP075+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Thermostats - Solid State
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6502UKP075+.pdf
- Description:
- MAX6502 +2.7V TO +5.5V, MICROPOW
- Quantity:
- Payment:
- Shipping:
Inventory:1,421
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Product details
Overview
MAX6502UKP075+ from Maxim Integrated is a factory-programmed, hot-temperature-threshold micropower temperature switch in SOT23-5 package, asserting an active-high push-pull output when die temperature exceeds +75°C with ±0.5°C typical accuracy, 30µA supply current, and pin-selectable 2°C or 10°C hysteresis. It directly drives fan-control logic in thermal management systems without external components.
For engineers reviewing the MAX6502UKP075+ datasheet, MAX6502UKP075+ pinout, MAX6502UKP075+ application, or MAX6502UKP075+ equivalent, this page delivers verified technical context, real-world design meaning for key specs, validated pin functions, confirmed application roles, and two rigorously cross-checked alternative parts - all grounded in Maxim's official documentation.
Technical Context
The MAX6502UKP075+ integrates dual on-chip temperature-dependent voltage references (one positive, one negative TC) and a comparator to define its +75°C trip point. Its internal power-on reset guarantees output stability for 50µs at startup.
Hysteresis is selected via the HYST pin: GND yields 2°C, VCC yields 10°C - preventing output oscillation near threshold. The push-pull output sources up to 800µA and sinks up to 3.2mA, enabling direct interface with fan control logic without pull-up resistors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.7V to +5.5V - supports standard logic rails including 3.3V and 5V systems without level-shifting. |
| Temperature Threshold | +75°C - factory-trimmed hot-trip point, accurate to ±0.5°C (typ) over full operating range. |
| Supply Current | 30µA (typ) - enables battery-powered or ultra-low-power thermal monitoring with negligible self-heating. |
| Hysteresis Options | 2°C (HYST = GND) or 10°C (HYST = VCC) - user-selectable to prevent chatter during slow thermal transitions. |
| Output Type | Active-high push-pull - eliminates need for external pull-up resistor and directly drives CMOS/TTL fan enable inputs. |
| Output Drive Strength | Sinks 3.2mA @ VCC > 4.5V; sources 800µA @ VCC > 4.5V - sufficient to switch logic-level fan controllers or gate drivers. |
| Operating Temperature Range | –55°C to +135°C - ensures reliable operation in industrial and automotive under-hood environments. |
Pinout & Package
SOT23-5 package with exposed pad not electrically connected; pins 1 and 2 are both GND (pin 2 provides lowest thermal resistance to die); requires PCB layout with short, wide copper traces to ground for optimal thermal coupling.
| 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 selection input | CMOS-compatible logic input: tie to GND for 2°C hysteresis, VCC for 10°C; floating state increases supply current. |
| 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 > +75°C; sinks 3.2mA / sources 800µA; no external pull-up required. |
Key Features
| Feature | Design Value |
|---|---|
| ±0.5°C typical threshold accuracy | Enables precise thermal triggering without calibration, critical for fail-safe fan activation before processor throttling. |
| No external components required | Reduces BOM count and PCB area; simplifies layout and qualification for space-constrained embedded modules. |
| Pin-selectable hysteresis | Allows dynamic trade-off between response sensitivity (2°C) and noise immunity (10°C) without firmware or hardware change. |
| 30µA supply current | Extends battery life in portable thermal monitors and avoids measurable self-heating (<0.05°C error at 1mA load). |
| Push-pull output architecture | Eliminates pull-up resistor, reduces standby power, and ensures clean logic-level transitions into capacitive fan-control inputs. |
Applications
| Microprocessor Thermal Protection | Fan Speed Control |
|---|---|
Use Scenario: Monitoring CPU die temperature in high-speed computing platforms to prevent thermal runaway. IC Role / Device Role / Timing Role: Hot-temperature switch asserting active-high signal when local temperature exceeds +75°C. Use Value: Triggers immediate fan ramp-up before thermal throttling occurs, leveraging ±0.5°C accuracy to avoid premature activation. |
Use Scenario: Directly enabling a 12V brushless DC fan in industrial motor drives based on heatsink temperature. IC Role / Device Role / Timing Role: Push-pull output driver interfacing with fan enable pin, activated above +75°C. Use Value: Eliminates external transistor or level shifter; 3.2mA sink capability ensures robust drive into fan controller input capacitance. |
| Industrial Power Supply Monitoring | Automotive Cabin Controller Thermal Safety |
Use Scenario: Detecting overheating in AC/DC power supply MOSFETs during sustained load conditions. IC Role / Device Role / Timing Role: Localized temperature switch mounted adjacent to power stage, asserting at +75°C. Use Value: 30µA quiescent current avoids loading auxiliary supplies; SOT23-5 fits under heatsink mounting screws for direct thermal coupling. |
Use Scenario: Preventing thermal damage to infotainment SoC in parked vehicles exposed to desert sun. IC Role / Device Role / Timing Role: Standalone overtemperature detector with +75°C trip, driving HVAC fan override signal. Use Value: –55°C to +135°C operating range ensures reliability across automotive ambient extremes; RoHS-compliant + suffix meets OEM compliance requirements. |
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 | I²C digital output; ±2°C accuracy; requires microcontroller polling; 250µA supply current. | Used where programmable thresholds or multi-sensor bus sharing is needed; not suitable for direct fan enable. | Select when system already uses I²C infrastructure and needs configurable trip points; avoid for simple single-point overtemp shutdown. |
| TC74A0-5.0VAT | Serial interface (SMBus/I²C); ±2°C accuracy; 100µA supply current; fixed +75°C variant available. | Requires firmware integration; lacks push-pull output - needs external driver for fan control. | Choose for designs needing remote temperature telemetry alongside local switching; not drop-in for MAX6502UKP075+'s autonomous analog decision-making. |
Compared with LM75BIMM/NOPB and TC74A0-5.0VAT, the MAX6502UKP075+ delivers deterministic, zero-latency thermal response without software overhead, lower power, and direct logic-level drive - making it optimal for safety-critical, cost-sensitive fan-enable applications where simplicity and reliability are paramount.
Availability
MAX6502UKP075+ is available at Aetrix Electronics and suitable for microprocessor thermal protection, fan speed control, industrial power supply monitoring, and automotive cabin controller thermal safety requiring stable component supply and long-term lifecycle support.
Supply support for MAX6502UKP075+ 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 consumer applications.
The MAX6501–MAX6504 family was engineered specifically for low-cost, micropower thermal monitoring in space-constrained systems - delivering factory-trimmed accuracy and autonomous switching without microcontroller dependency.
FAQ
What is the exact temperature trip point of the MAX6502UKP075+?
The MAX6502UKP075+ has a factory-programmed hot-temperature threshold of +75°C, with ±0.5°C typical accuracy over the full operating temperature range (–55°C to +135°C). This value is laser-trimmed during production and does not require external calibration. The MAX6502UKP075+ asserts its active-high TOVER output only when die temperature exceeds this precise point.
Does the MAX6502UKP075+ require an external pull-up resistor on its output?
No, the MAX6502UKP075+ features an active-high push-pull output stage that both sources and sinks current - eliminating the need for an external pull-up resistor. It can directly drive fan enable inputs, logic gates, or microcontroller GPIO pins. This distinguishes it from open-drain variants like the MAX6501UKP075+, which do require a pull-up.
How is hysteresis configured on the MAX6502UKP075+?
Hysteresis on the MAX6502UKP075+ is set via 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 not permitted. The actual hysteresis value also depends on the programmed trip temperature, as confirmed in Maxim's Typical Operating Characteristics plots.
Can the MAX6502UKP075+ operate from a 3.3V supply?
Yes, the MAX6502UKP075+ operates across a supply range of +2.7V to +5.5V, fully supporting 3.3V systems. At VCC = 3.3V, its output high voltage (VOH) is guaranteed ≥ 0.8 × VCC (≥2.64V), and output low voltage (VOL) is ≤ 0.4V when sinking 1.2mA - ensuring compatibility with standard 3.3V CMOS logic families.
What is the thermal resistance (θJA) of the MAX6502UKP075+ in its SOT23-5 package?
The MAX6502UKP075+ in the SOT23-5 package has a typical junction-to-ambient thermal resistance (θJA) of 140°C/W. Pin 2 provides the lowest thermal resistance path to the die, so PCB layout should use short, wide copper traces connecting both GND pins to a solid ground plane to maximize heat transfer and ensure accurate die temperature tracking.
MAX6502UKP075+ 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:
- 75°C
- Accuracy:
- ±6°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
MAX6502UKP075+ FAQ
1.How can I place an order for MAX6502UKP075+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6502UKP075+ 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 MAX6502UKP075+ reliable?
The price and inventory of MAX6502UKP075+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6502UKP075+ is usually 5 days.
3.What payment methods are accepted for MAX6502UKP075+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6502UKP075+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6502UKP075+?
MAX6502UKP075+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6502UKP075+ 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 MAX6502UKP075+?
For technical support, including MAX6502UKP075+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6502UKP075+ requirements.
6.How does Aetrix verify that MAX6502UKP075+ is sourced from the original manufacturer or authorized distributors?
All MAX6502UKP075+ 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 MAX6502UKP075+ meets industry standards.
7.What is the process for return or replacement of MAX6502UKP075+?
All MAX6502UKP075+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6502UKP075+, 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 MAX6502UKP075+ part is unused and in its original packaging.
Return procedure for MAX6502UKP075+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6502UKP075+ Tags
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