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Analog Devices Inc./Maxim Integrated MAX6502UKP105
- Part No.:
- MAX6502UKP105
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Thermostats - Solid State
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6502UKP105.pdf
- Description:
- MICROPOWER TEMPERATURE SWITCH
- Quantity:
- Payment:
- Shipping:
Inventory:1,824
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Product details
Overview
MAX6502UKP105 from Maxim Integrated is a factory-programmed, active-high push-pull temperature switch with +105°C hot-trip threshold, ±0.5°C typical accuracy, 30µA supply current, and pin-selectable 2°C/10°C hysteresis. It operates from +2.7V to +5.5V and drives fan-control logic directly without external components.
For engineers reviewing the MAX6502UKP105 datasheet, MAX6502UKP105 pinout, MAX6502UKP105 application, or MAX6502UKP105 equivalent, this device serves as a low-power, single-point overtemperature detector for thermal management in embedded computing, industrial controllers, and power-conversion systems where precise, self-contained trip-point assertion is required.
Technical Context
The MAX6502UKP105 integrates two on-die 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 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 push-pull output sources up to 800µA and sinks up to 3.2mA, enabling direct interface with fan drivers or logic inputs without pull-up resistors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.7V to +5.5V - supports wide-range battery and rail-powered systems without regulation. |
| Temperature Threshold | +105°C - factory-trimmed hot-trip point for high-temperature fault detection in CPUs, FETs, or transformers. |
| Threshold Accuracy | ±0.5°C (typ), ±6°C (max) - enables reliable margin-based thermal shutdown without calibration. |
| Supply Current | 30µA (typ) - negligible self-heating (<0.04°C die shift) and compatible with always-on monitoring. |
| Hysteresis Options | 2°C (HYST = GND) or 10°C (HYST = VCC) - selectable to prevent chatter during slow thermal transients. |
| Output Type | Active-high push-pull - eliminates need for external pull-up and drives CMOS/TTL loads directly. |
| Operating Temp Range | -55°C to +135°C - ensures functionality across automotive under-hood and industrial ambient extremes. |
Pinout & Package
SOT23-5 package with exposed thermal pad (pin 2 provides lowest thermal resistance to die). Dual ground pins (1 & 2) must be connected together near the IC for optimal thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 GND | Ground reference and thermal path | Both pins connect to system ground; pin 2 offers lowest θJA for accurate die temperature tracking. |
| 3 HYST | Hysteresis selection input | CMOS-compatible control: GND = 2°C hysteresis, VCC = 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 > +105°C; sources 800µA / sinks 3.2mA at VCC > 4.5V. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-programmed +105°C trip point | Eliminates external resistor networks or trimming; guarantees repeatable thermal response across production lots. |
| Push-pull output architecture | Enables direct drive of fan enable inputs or logic gates without pull-up resistors or level-shifting circuitry. |
| Pin-selectable hysteresis | Allows system-level optimization: 2°C for tight thermal control, 10°C for noisy or slowly varying environments. |
| 30µA quiescent current | Supports continuous monitoring in battery-backed or energy-sensitive applications without measurable power penalty. |
| ±0.5°C typical threshold accuracy | Reduces safety margin requirements in thermal design, enabling higher performance within thermal limits. |
Applications
| Microprocessor Thermal Protection | Fan Speed Control |
|---|---|
Use Scenario: Monitoring CPU or FPGA junction temperature in high-speed computing systems to prevent thermal throttling or damage. IC Role / Device Role / Timing Role: Overtemperature detector asserting active-high signal when die exceeds +105°C. Use Value: Enables immediate fan activation or clock scaling before critical thermal limits are breached. |
Use Scenario: Controlling cooling fans in industrial motor drives or telecom power supplies based on heatsink temperature. IC Role / Device Role / Timing Role: Direct fan-enable switch triggered at +105°C with configurable hysteresis to avoid rapid cycling. Use Value: Reduces component count by eliminating external comparators and pull-up resistors in fan control circuits. |
| Power Converter Overtemperature Shutdown | Industrial Sensor Node Temperature Alarm |
Use Scenario: Safeguarding DC-DC converters or inverters against MOSFET or transformer overheating during overload conditions. IC Role / Device Role / Timing Role: Standalone thermal cutoff that asserts high to disable gate drivers or trigger latch-off circuitry. Use Value: Provides fail-safe, single-point protection independent of microcontroller firmware or software timing. |
Use Scenario: Adding localized overtemperature alert capability to wireless sensor nodes deployed in harsh environments. IC Role / Device Role / Timing Role: Low-power thermal event generator interfacing directly with MCU GPIO or wake-up interrupt input. Use Value: Delivers deterministic, sub-100µA thermal monitoring without burdening the host processor or increasing BOM cost. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar temperature switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM20BIM7X/NOPB | Analog output temperature sensor (0.5V–1.5V linear scale), no built-in comparator or trip logic. | Requires external comparator and reference to implement switching function; adds layout and calibration complexity. | Select when variable temperature feedback is needed alongside discrete trip points. |
| TC74A5-5.0VAT | I²C digital output, ±2°C accuracy, 250µA supply current, fixed +5°C hysteresis. | Requires MCU I²C interface and firmware polling; not suitable for standalone hardware-triggered actions. | Select when system already uses I²C bus and programmable thresholds are preferred over factory-set points. |
Compared with LM20BIM7X/NOPB and TC74A5-5.0VAT, the MAX6502UKP105 delivers immediate, hardware-based +105°C assertion with micropower consumption and zero external components - making it optimal for deterministic, low-latency thermal safety in resource-constrained systems.
Availability
MAX6502UKP105 is available at Aetrix Electronics and suitable for microprocessor thermal protection, fan speed control, and power converter overtemperature shutdown requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX6502UKP105 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 and mixed-signal ICs for power, sensing, and interface applications, with emphasis on integration, reliability, and low-power operation.
The MAX6501–MAX6504 family was engineered specifically for cost-sensitive, self-contained thermal monitoring - delivering factory-trimmed trip points, micropower operation, and robust SOT23 packaging for embedded thermal safety.
FAQ
What is the exact factory-programmed temperature threshold of the MAX6502UKP105?
The MAX6502UKP105 has a factory-programmed hot-trip threshold of +105°C. This value is laser-trimmed during production and guaranteed over the full operating temperature range (-55°C to +135°C), with ±0.5°C typical accuracy and ±6°C maximum deviation per the datasheet specifications.
Does the MAX6502UKP105 require external components to operate?
No, the MAX6502UKP105 requires no external components. Its fully integrated architecture includes on-die temperature references, comparator, and push-pull output driver. Only VCC, GND, and HYST connections are needed - eliminating pull-up resistors, voltage dividers, or trimming networks required by discrete solutions.
How is hysteresis configured on the MAX6502UKP105?
Hysteresis on the MAX6502UKP105 is set via the HYST pin: connect HYST to GND for 2°C hysteresis or to VCC for 10°C hysteresis. The pin must not be left floating, as intermediate voltages increase supply current. The actual hysteresis value also depends on the programmed trip point, as shown in Figure 8 of the datasheet.
What is the output drive capability of the MAX6502UKP105?
The MAX6502UKP105 push-pull output sources up to 800µA and sinks up to 3.2mA when VCC > 4.5V. At lower supply voltages, sink capability remains ≥1.2mA (VCC > 2.7V). This allows direct interface with fan enable inputs, logic gates, or optocoupler LEDs without buffering or level-shifting circuitry.
Can the MAX6502UKP105 be used in automotive under-hood applications?
Yes, the MAX6502UKP105 supports an operating temperature range of -55°C to +135°C and is qualified for industrial and extended-temperature applications. Its SOT23-5 package, ±0.5°C typical accuracy, and 30µA supply current make it suitable for under-hood thermal monitoring where reliability and low self-heating are critical.
MAX6502UKP105 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:
- 105°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
MAX6502UKP105 FAQ
1.How can I place an order for MAX6502UKP105 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6502UKP105 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 reliable?
The price and inventory of MAX6502UKP105 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6502UKP105 is usually 5 days.
3.What payment methods are accepted for MAX6502UKP105?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6502UKP105 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6502UKP105?
MAX6502UKP105 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6502UKP105 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?
For technical support, including MAX6502UKP105 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6502UKP105 requirements.
6.How does Aetrix verify that MAX6502UKP105 is sourced from the original manufacturer or authorized distributors?
All MAX6502UKP105 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 meets industry standards.
7.What is the process for return or replacement of MAX6502UKP105?
All MAX6502UKP105 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6502UKP105, 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 part is unused and in its original packaging.
Return procedure for MAX6502UKP105:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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Analog Devices Inc./Maxim Integrated
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