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Analog Devices Inc./Maxim Integrated MAX6501CMP085
- Part No.:
- MAX6501CMP085
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Thermostats - Solid State
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6501CMP085.pdf
- Description:
- MICROPOWER TEMPERATURE SWITCH
- Quantity:
- Payment:
- Shipping:
Inventory:3,333
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Product details
Overview
The MAX6501CMP085 from Maxim Integrated is a factory-programmed, hot-temperature threshold IC that asserts an active-low open-drain output when die temperature exceeds +85°C, operating from +2.7V to +5.5V supply with ±0.5°C typical threshold accuracy and 30µA supply current. It requires no external components and is used for microprocessor reset signaling in high-speed computing thermal monitoring.
For engineers reviewing the MAX6501CMP085 datasheet, MAX6501CMP085 pinout, MAX6501CMP085 application, or MAX6501CMP085 equivalent, key selection criteria include its +85°C trip point, TO-220-7 package thermal performance, pin-selectable +2°C/+10°C hysteresis, and compatibility with µP reset inputs in industrial and embedded systems.
Technical Context
The MAX6501CMP085 integrates two on-chip temperature-dependent voltage references (one positive, one negative TC) and a comparator to determine the precise +85°C trip point. Its internal power-on reset guarantees output state stability for 50µs at startup.
Hysteresis is selected via the HYST pin: grounded for +2°C hysteresis or tied to VCC for +10°C hysteresis. The open-drain TOVER output sinks up to 1.2mA and supports pull-up to voltages exceeding VCC, enabling flexible interface with µP reset logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Temperature Threshold | +85°C factory-trimmed hot-trip point, accurate to ±0.5°C (typ) over full operating range |
| Supply Voltage Range | +2.7V to +5.5V - compatible with 3.3V and 5V logic domains without level-shifting |
| Supply Current | 30µA typical - enables micropower operation in battery-backed or energy-constrained systems |
| Output Type | Active-low open-drain TOVER - directly interfaces with standard µP reset inputs requiring low-assertion |
| Hysteresis Options | +2°C (HYST = GND) or +10°C (HYST = VCC) - prevents output oscillation near trip point |
| Package Thermal Resistance | 75°C/W (θJA, TO-220-7) - lower self-heating than SOT23-5, suitable for heat-sink mounting |
| Operating Temperature Range | -55°C to +135°C - supports extended industrial and automotive under-hood environments |
Pinout & Package
MAX6501CMP085 is housed in a 7-pin TO-220 package with exposed tab (Dwg: 21-0064B, pkgcode C227-1), optimized for direct heat-sink mounting and low thermal resistance (75°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 | GND | Dual ground pins; internally unconnected - must be tied together near IC for lowest impedance return path |
| 3 | HYST | CMOS-compatible hysteresis select: GND → +2°C, VCC → +10°C; floating prohibited |
| 4 | VCC | Positive supply input (+2.7V to +5.5V); decoupling capacitor recommended at pin |
| 5 | TOVER | Active-low open-drain output - sinks ≥1.2mA at VCC > 2.7V; requires external pull-up resistor |
| 6, 7 | GND (Tab) | Exposed metal tab connected to internal substrate ground - provides mechanical mounting and thermal conduction path |
Key Features
| Feature | Design Value |
|---|---|
| Factory-programmed trip point | +85°C hot-threshold, laser-trimmed for ±0.5°C typical accuracy - eliminates calibration overhead |
| No external components required | Self-contained reference/comparator architecture - reduces BOM count and PCB area vs discrete solutions |
| Pin-selectable hysteresis | +2°C or +10°C via single HYST pin - enables system-specific noise immunity tuning without redesign |
| Low quiescent current | 30µA typical supply current - extends battery life in portable or always-on monitoring applications |
| Robust output drive | Open-drain TOVER sinks 1.2mA at VCC > 2.7V and tolerates pull-up to >VCC - simplifies interfacing with mixed-voltage µPs |
Applications
| Microprocessor Thermal Reset | Fan Control Enable |
|---|---|
|
Use Scenario: Monitors CPU die temperature in high-speed desktop/server motherboards to prevent thermal runaway. IC Role / Device Role / Timing Role: Active-low reset signal generator asserting when local temperature exceeds +85°C. Use Value: Prevents processor damage by triggering immediate µP reset before critical junction temperatures are reached. |
Use Scenario: Enables cooling fan only when ambient or heatsink temperature rises above safe operating limit. IC Role / Device Role / Timing Role: Threshold-triggered enable switch for 12V DC fan drivers in industrial enclosures. Use Value: Reduces acoustic noise and power consumption by eliminating continuous fan operation below +85°C. |
| Power Supply Overtemperature Protection | Industrial Motor Drive Thermal Monitoring |
|
Use Scenario: Embedded in AC/DC power supplies to disable output if transformer or MOSFET heatsink exceeds +85°C. IC Role / Device Role / Timing Role: Fail-safe shutdown initiator interfaced with primary-side controller enable pin. Use Value: Meets IEC 62368-1 thermal safety requirements without adding microcontroller firmware complexity. |
Use Scenario: Mounted directly on motor drive heatsink to monitor IGBT module temperature during variable-frequency operation. IC Role / Device Role / Timing Role: Standalone overtemperature alarm feeding into PLC input or gate driver disable circuit. Use Value: Provides deterministic, sub-100ms response to thermal faults - faster than software-based monitoring loops. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar temperature switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6501UKP085 | SOT23-5 package (140°C/W θJA), same +85°C trip, identical electrical specs | Better suited for space-constrained PCBs; less effective for direct heatsink mounting | Select when board area is limited and thermal mass is low - avoid where heatsink coupling is required |
| LM20BIMAX/NOPB | Analog output temperature sensor (not switch), ±2.5°C accuracy, requires external comparator and reference | Enables programmable thresholds and analog feedback, but increases component count and design effort | Choose only when variable trip points or temperature telemetry are needed - not a drop-in replacement |
Compared with MAX6501UKP085, the MAX6501CMP085 offers superior thermal coupling via TO-220 package for heatsink-mounted applications; compared with LM20BIMAX/NOPB, it delivers immediate, calibrated switching action without supporting circuitry - reducing design risk and time-to-market.
Availability
MAX6501CMP085 is available at Aetrix Electronics and suitable for microprocessor thermal reset, power supply overtemperature protection, and industrial motor drive monitoring requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6501CMP085 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, fully integrated temperature switches for embedded thermal safety - eliminating external components while delivering factory-trimmed accuracy and robust output drive in compact packages.
FAQ
What is the exact temperature trip point of the MAX6501CMP085?
The MAX6501CMP085 has a factory-programmed hot-temperature threshold of +85°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 manufacturing and does not require user calibration. The MAX6501CMP085 asserts its open-drain TOVER output low when die temperature exceeds this point.
Does the MAX6501CMP085 require external components to operate?
No, the MAX6501CMP085 requires no external components for basic operation. It integrates both temperature-dependent voltage references and a comparator on-die. A pull-up resistor on the TOVER pin is necessary for proper open-drain logic-level translation, but no capacitors, resistors, or additional ICs are needed to achieve its specified +85°C switching function. The MAX6501CMP085 is designed for minimal BOM implementation.
How is hysteresis configured on the MAX6501CMP085?
Hysteresis on the MAX6501CMP085 is configured using the HYST pin: connect HYST to GND for +2°C hysteresis or to VCC for +10°C hysteresis. The pin must not float, as undefined voltages increase supply current and may cause erratic behavior. The actual hysteresis magnitude is verified per device and correlates with the programmed trip point. This configuration applies directly to the MAX6501CMP085 without external circuitry.
What package type and thermal characteristics does the MAX6501CMP085 use?
The MAX6501CMP085 uses a 7-pin TO-220 package (drawing 21-0064B, pkgcode C227-1) with exposed metal tab connected to substrate ground. Its thermal resistance is 75°C/W (θJA), significantly lower than the SOT23-5 variant (140°C/W), making it ideal for direct heatsink mounting. The dual GND pins (1 and 2) and tab (pins 6–7) provide low-impedance thermal and electrical paths - a key differentiator of the MAX6501CMP085 in thermally demanding applications.
Can the MAX6501CMP085 interface directly with a 3.3V microprocessor reset input?
Yes, the MAX6501CMP085's open-drain TOVER output is compatible with 3.3V µP reset inputs. When VCC is ≥2.7V, the output sinks ≥1.2mA with VOL ≤0.3V, ensuring solid logic-low assertion. A pull-up resistor (e.g., 10kΩ to 3.3V) completes the interface. The MAX6501CMP085 also tolerates pull-up voltages exceeding VCC, allowing interoperability across mixed-voltage systems without level shifters.
MAX6501CMP085 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:
- -
- Accuracy:
- ±0.5°C
- Current - Output (Max):
- 20mA
- Output Type:
- Open Drain
- Output:
- Active Low
- 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
MAX6501CMP085 FAQ
1.How can I place an order for MAX6501CMP085 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6501CMP085 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 MAX6501CMP085 reliable?
The price and inventory of MAX6501CMP085 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6501CMP085 is usually 5 days.
3.What payment methods are accepted for MAX6501CMP085?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6501CMP085 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6501CMP085?
MAX6501CMP085 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6501CMP085 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 MAX6501CMP085?
For technical support, including MAX6501CMP085 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6501CMP085 requirements.
6.How does Aetrix verify that MAX6501CMP085 is sourced from the original manufacturer or authorized distributors?
All MAX6501CMP085 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 MAX6501CMP085 meets industry standards.
7.What is the process for return or replacement of MAX6501CMP085?
All MAX6501CMP085 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6501CMP085, 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 MAX6501CMP085 part is unused and in its original packaging.
Return procedure for MAX6501CMP085:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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