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Analog Devices Inc./Maxim Integrated MAX6518UKP035+T
- Part No.:
- MAX6518UKP035+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Thermostats - Solid State
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6518UKP035+T.pdf
- Description:
- IC TEMP SENSOR SW SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,631
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Product details
Overview
The MAX6518UKP035+T from Maxim Integrated is a factory-programmed analog temperature sensor switch with +35°C hot-temperature threshold, active-high push-pull output, ±1.5°C max accuracy over -15°C to +65°C, 22µA typical supply current, and pin-selectable 2°C/10°C hysteresis - used for overtemperature protection in fan control and server thermal management.
For engineers reviewing the MAX6518UKP035+T datasheet, MAX6518UKP035+T pinout, MAX6518UKP035+T application, or MAX6518UKP035+T equivalent, key selection criteria include trip-point accuracy, hysteresis configuration, analog output linearity (−10.62 mV/°C), push-pull drive capability, and SOT23-5 package compatibility with board-level thermal sensing layouts.
Technical Context
The MAX6518UKP035+T integrates a BiCMOS-based analog temperature sensor, fixed voltage reference, and comparator in a single die. Its TOVER output asserts high when die temperature exceeds +35°C, with hysteresis set by HYST pin connection (VCC = 2°C, GND = 10°C).
It delivers a linear analog output (OUT) ranging from 0.77V to 2.59V across −45°C to +125°C, governed by VOUT = 1.8015V − 10.62 mV(T − 30), and supports capacitive loads up to 1000 pF without instability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Temperature Threshold | +35°C hot threshold - triggers TOVER high when die exceeds +35°C, enabling immediate thermal response in cooling systems |
| Accuracy | ±1.5°C max over −15°C to +65°C - ensures reliable trip-point consistency for industrial-grade thermal alarms |
| Supply Current | 22µA typical - enables always-on monitoring in battery-backed or low-power embedded systems |
| Hysteresis | PIN-selectable 2°C or 10°C - prevents output chatter near threshold; HYST = VCC selects 2°C for tight control loops |
| Analog Output Gain | −10.62 mV/°C - provides direct, calibrated voltage-to-temperature mapping for board-level validation |
| Output Type | Active-high push-pull - drives logic inputs directly without external pull-up, simplifying interface to microcontrollers |
| Operating Voltage | 2.7V to 5.5V - compatible with standard 3.3V and 5V system rails, including legacy industrial supplies |
| Package | 5-pin SOT23 - surface-mount footprint with minimal PCB area (2.9 mm × 1.6 mm) and low thermal resistance via Pin 2 (GND) |
Pinout & Package
MAX6518UKP035+T uses a 5-pin SOT23 package (outline 21-0057, land pattern 90-0174) with exposed pad not electrically connected. Thermal path optimized through Pin 2 (GND), requiring short/wide copper traces for accurate die-to-board heat transfer.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | TOVER | Active-high push-pull output - goes high when die temperature > +35°C; sinks/source up to 800µA at VCC > 4.5V |
| 2 | GND | Ground reference and primary thermal conduction path - must connect to large copper pour for accurate sensing |
| 3 | HYST | Hysteresis select input - tie to VCC for 2°C hysteresis, GND for 10°C; no external pull required |
| 4 | VCC | Power supply input - bypass with 0.1µF capacitor close to pin; supports 2.7V–5.5V operation |
| 5 | OUT | Analog temperature output - linear voltage proportional to die temperature (0.77V to 2.59V range); weak drive (40µA max) |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed +35°C threshold | Eliminates calibration during production; ±0.5°C typical accuracy reduces need for post-assembly trimming |
| Integrated analog output (OUT) | Enables in-circuit functional test of thermal protection without external sensors or stimulus equipment |
| Push-pull TOVER output | Drives CMOS inputs directly - avoids pull-up resistors and associated leakage/budgeting in dense PCB layouts |
| Pin-selectable hysteresis | Allows dynamic hysteresis tuning per application: 2°C for precision control, 10°C for noisy thermal environments |
| Stable with 1000pF load | Permits direct connection to ADC input or long traces without oscillation, easing layout in mixed-signal boards |
| −55°C to +125°C operating range | Supports deployment in automotive under-hood, industrial motor drives, and telecom base station enclosures |
Applications
| Fan Control | Server Overtemperature Alarm |
|---|---|
Use Scenario: Monitors CPU or power MOSFET junction temperature in real time to activate cooling fans before thermal throttling occurs. IC Role / Device Role / Timing Role: Temperature switch providing fast-response digital enable signal (TOVER) to fan driver IC or PWM controller. Use Value: Prevents thermal runaway using factory-calibrated +35°C trigger and 2°C hysteresis, reducing fan cycling noise and wear. | Use Scenario: Detects abnormal chassis temperature rise in 1U rack servers to initiate graceful shutdown before component damage. IC Role / Device Role / Timing Role: Standalone overtemperature indicator asserting TOVER high upon exceeding +35°C, interfacing directly with BMC GPIO. Use Value: Delivers fail-safe protection with no software dependency, leveraging push-pull output for robust noise immunity in high-density backplanes. |
| Notebook Thermal Management | RAID Controller Protection |
Use Scenario: Embedded in ultrabook motherboard to monitor SSD or GPU temperature and throttle performance preemptively. IC Role / Device Role / Timing Role: Analog/digital dual-mode sensor - OUT used for OS-level thermal reporting, TOVER triggers hardware throttling circuitry. Use Value: Combines diagnostic visibility (via analog output) with deterministic hardware response (TOVER), improving user experience and reliability. | Use Scenario: Protects RAID controller ASICs from overheating due to airflow blockage or fan failure in storage enclosures. IC Role / Device Role / Timing Role: Dedicated thermal watchdog with +35°C trip point feeding into FPGA-based safety monitor logic. Use Value: Ensures data integrity by initiating forced shutdown within 200µs of threshold crossing, verified by startup delay characterization. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar temperature switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6516UKP035+T | Identical pinout, same +35°C hot threshold and push-pull output, but lacks analog output (no OUT pin) | Used where only digital alarm is needed; eliminates analog test capability and board-level calibration | Select when cost reduction is critical and analog diagnostics are unnecessary |
| LM75BIMM-3/NOPB | I²C digital output only; no analog output or push-pull TOVER; ±2°C accuracy; requires host MCU polling | Suitable for systems with available I²C bus and firmware support; not appropriate for autonomous hardware shutdown | Choose when centralized thermal monitoring across multiple zones is required, not standalone overtemp assertion |
Compared with MAX6516UKP035+T, the MAX6518UKP035+T adds board-testable analog output without increasing footprint or power; versus LM75BIMM-3/NOPB, it delivers deterministic, zero-latency hardware trip response independent of firmware execution.
Availability
MAX6518UKP035+T is available at Aetrix Electronics and suitable for fan control, server thermal alarms, notebook thermal management, and RAID controller protection requiring stable component supply across extended product lifecycles.
Supply support for MAX6518UKP035+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 and mixed-signal ICs for industrial, computing, and communications applications.
The MAX6516–MAX6519 family delivers low-cost, fully integrated temperature switches targeting embedded thermal protection where simplicity, accuracy, and analog diagnostics are essential.
FAQ
What is the exact temperature trip point of the MAX6518UKP035+T?
The MAX6518UKP035+T has a factory-programmed hot-temperature threshold of +35°C. It asserts its TOVER output high when the die temperature exceeds this value. Accuracy is ±1.5°C maximum over −15°C to +65°C, with ±0.5°C typical. The trip point is fixed and cannot be adjusted externally - it is laser-trimmed during manufacturing.
Does the MAX6518UKP035+T provide an analog output, and what is its voltage range?
Yes, the MAX6518UKP035+T provides an analog output on Pin 5 (OUT) that is proportional to die temperature. Its voltage ranges from 0.77V at −45°C to 2.59V at +125°C, following the transfer function VOUT = 1.8015V − 10.62 mV(T − 30). This output supports board-level functional testing and calibration verification without external instrumentation.
How is hysteresis configured on the MAX6518UKP035+T, and what are the options?
Hysteresis on the MAX6518UKP035+T is configured via the HYST pin (Pin 3): connect to VCC for 2°C hysteresis or to GND for 10°C hysteresis. This pin-selectable feature prevents output oscillation near the +35°C trip point. No external components are required, and the setting is effective immediately after power-up with no timing overhead.
What is the output structure of the MAX6518UKP035+T, and can it drive logic inputs directly?
The MAX6518UKP035+T features an active-high push-pull TOVER output (Pin 1) capable of sourcing up to 800µA and sinking up to 1.2mA. It drives standard CMOS logic inputs directly without external pull-up resistors. This eliminates BOM cost and layout complexity compared to open-drain alternatives like the MAX6519 series.
What package does the MAX6518UKP035+T use, and what are its thermal considerations?
The MAX6518UKP035+T uses a 5-pin SOT23 package (U5+2 outline) with 2.9 mm × 1.6 mm footprint. Pin 2 (GND) provides the lowest thermal resistance path to the die. For accurate sensing, mount with short, wide copper traces between Pin 2 and the monitored heat source. Self-heating is negligible (<0.05°C at 1mA sink) due to 22µA quiescent current and 140°C/W θJA.
MAX6518UKP035+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:
- Obsolete
- Trip Temperature Threshold:
- Hot
- Switching Temperature:
- 35°C
- Accuracy:
- ±1.5°C
- Current - Output (Max):
- -
- Output Type:
- Push-Pull
- Output:
- Active High
- Output Function:
- OverTemp
- Selectable Hysteresis:
- Yes
- Features:
- -
- Voltage - Supply:
- 2.7 V ~ 5.5 V
- Current - Supply:
- 22µA
- Operating Temperature:
- -55°C ~ 125°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- SOT-23-5
MAX6518UKP035+T FAQ
1.How can I place an order for MAX6518UKP035+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6518UKP035+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 MAX6518UKP035+T reliable?
The price and inventory of MAX6518UKP035+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6518UKP035+T is usually 5 days.
3.What payment methods are accepted for MAX6518UKP035+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6518UKP035+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6518UKP035+T?
MAX6518UKP035+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6518UKP035+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 MAX6518UKP035+T?
For technical support, including MAX6518UKP035+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6518UKP035+T requirements.
6.How does Aetrix verify that MAX6518UKP035+T is sourced from the original manufacturer or authorized distributors?
All MAX6518UKP035+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 MAX6518UKP035+T meets industry standards.
7.What is the process for return or replacement of MAX6518UKP035+T?
All MAX6518UKP035+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6518UKP035+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 MAX6518UKP035+T part is unused and in its original packaging.
Return procedure for MAX6518UKP035+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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