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Analog Devices Inc./Maxim Integrated MAX6502UKP105+T
- Part No.:
- MAX6502UKP105+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Thermostats - Solid State
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6502UKP105+T.pdf
- Description:
- THERMOSTAT 105DEG ACT HI SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,212
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Product details
Overview
MAX6502UKP105+T 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 +105°C. It operates from +2.7V to +5.5V, consumes 30µA typical supply current, features ±0.5°C typical threshold accuracy, and supports pin-selectable 2°C or 10°C hysteresis. It is used for overtemperature fan control in high-speed computing systems.
For engineers reviewing the MAX6502UKP105+T datasheet, MAX6502UKP105+T pinout, MAX6502UKP105+T application, or MAX6502UKP105+T equivalent, key selection criteria include trip-point accuracy, push-pull drive capability, hysteresis configuration, low quiescent current, and SOT23 thermal performance in embedded thermal management.
Technical Context
The MAX6502UKP105+T integrates two on-chip temperature-dependent voltage references (one positive, one negative TC) and a comparator to define its +105°C trip point. Its internal power-on reset ensures output stability for 50µs at startup.
Hysteresis is selected via the HYST pin: grounded for 2°C, tied to VCC for 10°C - preventing oscillation near threshold. The push-pull output drives fan-control logic directly without external pull-up components, sourcing up to 800µA and sinking up to 3.2mA at VCC > 4.5V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.7V to +5.5V - compatible with 3.3V and 5V logic rails without level-shifting |
| Temperature Threshold | +105°C - factory-trimmed hot-trip point, accurate to ±0.5°C (typ) over full operating range |
| Supply Current | 30µA (typ) - enables battery-backed or energy-constrained thermal monitoring |
| Output Type | Active-high push-pull - directly interfaces with fan enable inputs or logic gates without pull-up resistors |
| Hysteresis Options | 2°C (HYST = GND) or 10°C (HYST = VCC) - configurable noise immunity for stable switching near threshold |
| Operating Temp Range | -55°C to +135°C - supports industrial and automotive under-hood environments |
| Package | SOT23-5 - compact 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. Device requires no external components for basic operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 GND | Ground reference | Both pins must be connected together near chip; Pin 2 is thermally optimized for die-to-PCB heat transfer |
| 3 HYST | Hysteresis select input | CMOS-compatible; tie to GND for 2°C hysteresis, to 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 > +105°C; sources 800µA / sinks 3.2mA (VCC > 4.5V) |
Key Features
| Feature | Design Value |
|---|---|
| ±0.5°C typical threshold accuracy | Enables precise overtemperature detection without calibration in production systems |
| No external components required | Reduces BOM count and PCB area; eliminates pull-up resistor dependency of open-drain alternatives |
| Pin-selectable hysteresis | Allows field-configurable noise margin without changing firmware or hardware design |
| 30µA typical supply current | Supports always-on thermal monitoring in low-power IoT edge nodes and portable devices |
| SOT23-5 thermal optimization | Pin 2's low θJA (140°C/W typical) ensures die temperature closely tracks monitored component |
Applications
| Microprocessor Overtemperature Protection | Fan Speed Control |
|---|---|
Use Scenario: Monitoring CPU die temperature during sustained compute loads in servers or embedded controllers. IC Role / Device Role / Timing Role: Temperature switch asserting active-high signal to enable cooling fan when Tdie exceeds +105°C. Use Value: Prevents thermal throttling or shutdown by initiating forced-air cooling before critical junction temperatures are reached. | Use Scenario: Regulating airflow in network switches with multiple ASICs generating localized hot spots. IC Role / Device Role / Timing Role: Directly driving fan-enable input with push-pull output, eliminating need for external transistor or level shifter. Use Value: Reduces system-level component count and improves response time versus open-drain alternatives requiring pull-up networks. |
| Industrial Power Supply Thermal Shutdown | Automotive ECU Temperature Alarm |
Use Scenario: Detecting overheating in DC-DC converter modules during overload or cooling-fan failure. IC Role / Device Role / Timing Role: Triggering latch-off circuit or controller disable signal upon crossing +105°C threshold. Use Value: Provides fail-safe hardware-level protection independent of software supervision or microcontroller health. | Use Scenario: Monitoring engine control unit ambient temperature in under-hood enclosures. IC Role / Device Role / Timing Role: Generating warning signal to vehicle diagnostics system when enclosure exceeds +105°C. Use Value: Meets AEC-Q200-relevant thermal alarm requirements using a single-component, RoHS-compliant solution. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar temperature switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM20BIMAX/NOPB | Analog output temperature sensor (not switch); requires external comparator and reference; no hysteresis control | Used where analog temperature readback is needed alongside threshold detection | Select only if system already includes ADC and comparator; adds complexity versus MAX6502UKP105+T's integrated switch function |
| TC74A5-5.0VAT | I²C digital output sensor; programmable trip points; 2°C fixed hysteresis; higher supply current (200µA) | Used in systems with I²C bus availability and need for remote or multi-zone monitoring | Choose when firmware-based threshold adjustment or daisy-chained thermal sensors are required |
Compared with LM20BIMAX/NOPB and TC74A5-5.0VAT, the MAX6502UKP105+T delivers immediate, deterministic overtemperature response with zero firmware dependency, minimal external parts, and ultra-low 30µA quiescent current - making it optimal for cost-sensitive, safety-critical, or battery-powered thermal alarms.
Availability
MAX6502UKP105+T is available at Aetrix Electronics and suitable for microprocessor thermal monitoring, fan control, and industrial power supply protection requiring stable component supply across extended temperature ranges.
Supply support for MAX6502UKP105+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, communications, and computing applications.
The MAX6501–MAX6504 family was engineered as low-cost, micropower temperature switches for embedded thermal management - delivering factory-trimmed thresholds, push-pull/open-drain flexibility, and SOT23 thermal efficiency without external components.
FAQ
What is the exact factory-programmed temperature threshold of MAX6502UKP105+T?
The MAX6502UKP105+T has a factory-programmed hot-temperature threshold of +105°C, with typical accuracy of ±0.5°C over the full operating temperature range (-55°C to +135°C). This value is laser-trimmed during production and does not require user calibration. The 'P105' suffix explicitly denotes the +105°C trip point, and the device asserts its active-high TOVER output when die temperature exceeds this threshold.
Does MAX6502UKP105+T require external components to operate?
No, the MAX6502UKP105+T requires no external components for basic operation. Unlike open-drain variants (e.g., MAX6501), its push-pull output eliminates the need for a pull-up resistor. Only VCC, GND, and HYST connections are necessary - HYST must be tied to either GND or VCC to set hysteresis; leaving it floating increases supply current and is not permitted in production designs.
How is hysteresis configured on MAX6502UKP105+T, and what are the values?
Hysteresis on the MAX6502UKP105+T is configured via the HYST pin: connect to GND for 2°C hysteresis or to VCC for 10°C hysteresis. These values prevent output oscillation near the +105°C trip point under slow thermal transients. The actual hysteresis magnitude varies slightly with programmed threshold (per Figure MAX6501 TOC8), but 2°C and 10°C are the guaranteed, pin-selected options for MAX6502UKP105+T.
What is the maximum output drive capability of MAX6502UKP105+T?
The MAX6502UKP105+T push-pull output can source up to 800µA and sink up to 3.2mA while maintaining specified VOH (> VCC - 1.5V) and VOL (< 0.4V) at VCC > 4.5V. At lower VCC (e.g., +2.7V), output drive is reduced but remains sufficient to directly drive CMOS logic inputs or fan-enable pins without buffering. Output resistance curves (TOC02/TOC03) confirm stable performance across -55°C to +125°C.
Can MAX6502UKP105+T be used in automotive under-hood applications?
Yes, the MAX6502UKP105+T supports an operating temperature range of -55°C to +135°C and is offered in a RoHS-compliant, lead(Pb)-free SOT23-5 package (+T suffix). While not AEC-Q200 qualified out-of-box, its electrical and thermal specifications meet common under-hood ambient requirements (e.g., ECU enclosures). System-level qualification would be required for automotive safety-critical use, but the MAX6502UKP105+T is widely deployed in industrial and computing thermal management where extended temperature operation is essential.
MAX6502UKP105+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:
- 105°C
- Accuracy:
- ±6°C
- Current - Output (Max):
- 20mA
- Output Type:
- Push-Pull
- Output:
- Active High
- 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
MAX6502UKP105+T FAQ
1.How can I place an order for MAX6502UKP105+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6502UKP105+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 MAX6502UKP105+T reliable?
The price and inventory of MAX6502UKP105+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6502UKP105+T is usually 5 days.
3.What payment methods are accepted for MAX6502UKP105+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6502UKP105+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6502UKP105+T?
MAX6502UKP105+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6502UKP105+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 MAX6502UKP105+T?
For technical support, including MAX6502UKP105+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6502UKP105+T requirements.
6.How does Aetrix verify that MAX6502UKP105+T is sourced from the original manufacturer or authorized distributors?
All MAX6502UKP105+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 MAX6502UKP105+T meets industry standards.
7.What is the process for return or replacement of MAX6502UKP105+T?
All MAX6502UKP105+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6502UKP105+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 MAX6502UKP105+T part is unused and in its original packaging.
Return procedure for MAX6502UKP105+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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