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Analog Devices Inc./Maxim Integrated MAX6502UKP055
- Part No.:
- MAX6502UKP055
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Thermostats - Solid State
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6502UKP055.pdf
- Description:
- MICROPOWER TEMPERATURE SWITCH
- Quantity:
- Payment:
- Shipping:
Inventory:1,099
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Product details
Overview
MAX6502UKP055 from Maxim Integrated is a factory-programmed, hot-temperature threshold temperature switch with +55°C trip point, active-high push-pull output, ±0.5°C typical threshold accuracy, 30µA supply current, and pin-selectable 2°C/10°C hysteresis - designed for direct fan-control logic interfacing in thermal management systems.
For engineers reviewing the MAX6502UKP055 datasheet, MAX6502UKP055 pinout, MAX6502UKP055 application, or MAX6502UKP055 equivalent, this device delivers micropower operation across -55°C to +125°C ambient range, operates from +2.7V to +5.5V, requires no external components, and supports precise overtemperature detection in space-constrained SOT23-5 layouts.
Technical Context
The MAX6502UKP055 integrates two on-die temperature-dependent voltage references (one positive, one negative TC) whose intersection defines the +55°C trip point. A comparator monitors their differential and drives a push-pull output stage that sources up to 800µA or sinks up to 3.2mA.
Hysteresis is selected via the HYST pin: grounded for 2°C, tied to VCC for 10°C - preventing output oscillation near threshold. Internal power-on reset ensures defined output state for 50µs at startup, and thermal self-heating is limited to <0.042°C under typical load conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Temperature Threshold | +55°C factory-trimmed hot-trip point; asserts output high when die temperature exceeds +55°C. |
| Supply Voltage Range | +2.7V to +5.5V - compatible with 3.3V and 5V logic rails without level-shifting. |
| Supply Current | 30µA typical - enables battery-powered or ultra-low-power thermal monitoring. |
| Output Type | Active-high push-pull - directly drives fan enable inputs or logic gates without pull-up resistors. |
| Threshold Accuracy | ±0.5°C (typ), ±6°C (max) over full operating range - sufficient for industrial-grade thermal alarms. |
| Hysteresis Options | 2°C (HYST = GND) or 10°C (HYST = VCC) - selectable per board layout to prevent chatter near trip point. |
| Package | SOT23-5 - surface-mount, 2.9mm × 1.6mm footprint with low thermal resistance via Pin 2 ground path. |
Pinout & Package
SOT23-5 package with exposed thermal pad not electrically connected; Pin 2 provides lowest thermal resistance to die and must be connected to system ground.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 | GND | Dual ground terminals; both must be connected to PCB ground plane - Pin 2 is primary thermal path to die. |
| 3 | HYST | CMOS-compatible hysteresis select input: tie to GND for 2°C hysteresis, to VCC for 10°C hysteresis. |
| 4 | VCC | Positive supply input (+2.7V to +5.5V); decoupling capacitor recommended within 5mm. |
| 5 | TOVER | Active-high push-pull output; goes high when die temperature > +55°C; sinks 3.2mA / sources 800µA min. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-programmed +55°C trip | Eliminates calibration effort and external sensor components - ready-to-deploy thermal trigger. |
| Push-pull output stage | Drives fan control logic directly without external pull-up; reduces BOM count and layout complexity. |
| Pin-selectable hysteresis | Enables field-tunable noise immunity: 2°C for tight thermal control, 10°C for coarse overtemp protection. |
| Micropower operation | 30µA supply current allows integration into always-on subsystems without impacting system power budget. |
| SOT23-5 thermal design | Pin 2 ground connection minimizes θJA (140°C/W typical), enabling accurate die-to-package temperature tracking. |
Applications
| Server CPU Thermal Monitoring | Fan Speed Control in Embedded Gateways |
|---|---|
|
Use Scenario: Monitors CPU die temperature on high-speed compute modules to prevent thermal throttling or shutdown. IC Role / Device Role / Timing Role: Hot-temperature switch asserting active-high signal when local die temperature exceeds +55°C. Use Value: Enables immediate fan activation before critical junction temperatures are reached, extending processor lifetime. |
Use Scenario: Controls cooling fans in industrial IoT gateways operating in unventilated enclosures. IC Role / Device Role / Timing Role: Overtemperature detector with push-pull output directly interfacing fan enable pins. Use Value: Eliminates need for external buffer or level shifter - reduces component count and improves reliability. |
| Power Supply Overtemperature Protection | Industrial Motor Drive Heat Monitoring |
|
Use Scenario: Detects overheating in DC-DC converter sections of telecom power supplies during overload conditions. IC Role / Device Role / Timing Role: Standalone thermal alarm with 2°C hysteresis to avoid false triggers during transient heating. Use Value: Provides fail-safe shutdown initiation without software intervention or microcontroller dependency. |
Use Scenario: Mounted adjacent to IGBT gate drivers in motor inverters to monitor heatsink temperature rise. IC Role / Device Role / Timing Role: Micropower temperature switch with +55°C threshold and 10°C hysteresis for robust thermal margining. Use Value: Ensures early-stage thermal warning before MOSFET SOA limits are exceeded, preventing catastrophic failure. |
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 (0.5mV/°C), not a digital switch; requires ADC and firmware logic. | Used where variable temperature feedback is needed, not binary overtemp assertion. | Select only if analog readout and programmable thresholds are required - adds MCU overhead and cost. |
| TC74A5-5.0VAT | I²C digital output, ±2°C accuracy, 250µA supply current, +5V-only operation, 8-pin SOIC package. | Requires I²C bus, firmware polling, and interrupt handling - unsuitable for direct hardware-triggered fan control. | Choose when multi-sensor thermal mapping is needed; not a drop-in replacement for hardware-level overtemp response. |
Compared with LM20BIMAX/NOPB and TC74A5-5.0VAT, the MAX6502UKP055 delivers deterministic, zero-latency, hardware-based overtemperature response in a minimal 5-pin SOT23 footprint - eliminating firmware dependencies and reducing system-level BOM and validation effort.
Availability
MAX6502UKP055 is available at Aetrix Electronics and suitable for server thermal management, embedded gateway fan control, and industrial power supply protection requiring stable component supply and long-term lifecycle support.
Supply support for MAX6502UKP055 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, computing, and communications applications.
The MAX6502UKP055 belongs to the MAX6501–MAX6504 family of micropower temperature switches - engineered for hardware-based, low-cost thermal protection in space- and power-constrained systems.
FAQ
What is the exact temperature trip point of the MAX6502UKP055?
The MAX6502UKP055 has a factory-programmed hot-temperature threshold of +55°C. It asserts its active-high TOVER output when the die temperature exceeds this value. The trip point is trimmed during manufacturing and specified with ±0.5°C typical accuracy over the full -55°C to +125°C operating range. This fixed threshold eliminates the need for external calibration or configuration.
Does the MAX6502UKP055 require external components to operate?
No, the MAX6502UKP055 requires no external components for basic operation. It functions with only VCC, GND, and the HYST pin configured (GND or VCC). Unlike open-drain variants, its push-pull output does not need a pull-up resistor. A 0.1µF ceramic decoupling capacitor on VCC is recommended but not strictly required for functional operation.
How is hysteresis selected on the MAX6502UKP055?
Hysteresis on the MAX6502UKP055 is selected by the logic level applied to the HYST pin: connect HYST to GND for 2°C hysteresis, or to VCC for 10°C hysteresis. The HYST pin must not be left floating, as intermediate voltages increase supply current. The actual hysteresis value also varies slightly with the programmed trip temperature, as confirmed in the Typical Operating Characteristics graph (Figure MAX6501 TOC8).
Can the MAX6502UKP055 drive a fan directly?
Yes, the MAX6502UKP055 can drive small-to-medium cooling fans directly via its push-pull TOVER output. It sources up to 800µA and sinks up to 3.2mA (at VCC > 4.5V), sufficient for enabling fan controller ICs or driving logic-level fan inputs. For higher-current fans, an external MOSFET or driver stage is recommended - but no buffer is needed for standard 5V fan enable signals.
What is the operating temperature range of the MAX6502UKP055?
The MAX6502UKP055 is rated for an operating ambient temperature range of -55°C to +125°C, with guaranteed performance across this span. Its internal die temperature tracking remains accurate due to low self-heating (<0.042°C at 1mA sink) and optimized thermal path through Pin 2. The device also supports storage from -65°C to +165°C and solder reflow up to +260°C.
MAX6502UKP055 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:
- 55°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
MAX6502UKP055 FAQ
1.How can I place an order for MAX6502UKP055 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6502UKP055 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 MAX6502UKP055 reliable?
The price and inventory of MAX6502UKP055 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6502UKP055 is usually 5 days.
3.What payment methods are accepted for MAX6502UKP055?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6502UKP055 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6502UKP055?
MAX6502UKP055 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6502UKP055 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 MAX6502UKP055?
For technical support, including MAX6502UKP055 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6502UKP055 requirements.
6.How does Aetrix verify that MAX6502UKP055 is sourced from the original manufacturer or authorized distributors?
All MAX6502UKP055 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 MAX6502UKP055 meets industry standards.
7.What is the process for return or replacement of MAX6502UKP055?
All MAX6502UKP055 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6502UKP055, 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 MAX6502UKP055 part is unused and in its original packaging.
Return procedure for MAX6502UKP055:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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