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Analog Devices Inc./Maxim Integrated MAX6504UKP015
- Part No.:
- MAX6504UKP015
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Thermostats - Solid State
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6504UKP015.pdf
- Description:
- MICROPOWER TEMPERATURE SWITCH
- Quantity:
- Payment:
- Shipping:
Inventory:114
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Product details
Overview
MAX6504UKP015 from Maxim Integrated is a cold-temperature threshold, active-high push-pull temperature switch in SOT23-5 package, with factory-programmed trip point of +15°C, ±0.5°C typical accuracy, 2°C/10°C pin-selectable hysteresis, and 30µA supply current. It asserts high when die temperature falls below +15°C and is used for low-temperature alarm and fan disable control in embedded power systems.
For engineers reviewing the MAX6504UKP015 datasheet, MAX6504UKP015 pinout, MAX6504UKP015 application, or MAX6504UKP015 equivalent, this page delivers verified thermal trip behavior, push-pull output drive capability, hysteresis configuration logic, SOT23-5 thermal resistance characteristics, and cold-threshold selection criteria for fail-safe system monitoring.
Technical Context
The MAX6504UKP015 integrates dual on-chip temperature-dependent voltage references (one positive, one negative TC) and a comparator to determine trip point at +15°C. Its internal power-on reset guarantees defined output state for 50µs at startup.
Hysteresis is selected via HYST pin: GND yields 2°C, VCC yields 10°C - preventing oscillation near threshold. The push-pull output sources up to 800µA (VCC > 4.5V) and sinks up to 3.2mA, eliminating external pull-up resistors required by open-drain variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Temperature Threshold | +15°C cold-trip point - output goes high when die temperature falls below +15°C |
| Threshold Accuracy | ±0.5°C (typ), ±6°C (max) - ensures precise low-temperature detection across -55°C to +125°C operating range |
| Supply Voltage Range | +2.7V to +5.5V - compatible with 3.3V and 5V logic rails without level-shifting |
| Supply Current | 30µA typical - enables always-on thermal monitoring in battery-powered or ultra-low-power systems |
| Output Type | Active-high push-pull - drives logic inputs directly; no external pull-up resistor needed |
| Hysteresis Options | 2°C (HYST = GND) or 10°C (HYST = VCC) - configurable noise immunity for stable switching near trip point |
| Operating Temp Range | -55°C to +135°C - supports industrial and automotive under-hood environments |
Pinout & Package
SOT23-5 package with exposed thermal pad (pin 2 provides lowest thermal resistance to die); requires short, wide copper traces to ground for optimal thermal coupling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 GND | Ground reference and thermal path | Both pins must be connected to system ground; pin 2 is primary thermal conduction path to PCB |
| 3 HYST | Hysteresis select input | CMOS-compatible; tie to GND for 2°C hysteresis, VCC for 10°C - floating state increases supply current |
| 4 VCC | Positive supply input | +2.7V to +5.5V; powers internal references, comparator, and output stage |
| 5 TUNDER | Active-high push-pull output | Goes high when die temperature falls below +15°C; sources/sinks current without external components |
Key Features
| Feature | Design Value |
|---|---|
| Fully integrated cold-threshold switch | No external components required - eliminates calibration parts and reduces BOM count |
| +15°C factory-trimmed trip point | Guaranteed cold-alarm trigger at precisely +15°C, enabling consistent system-level thermal shutdown sequencing |
| Push-pull output architecture | Direct interface with fan-disable logic or microcontroller GPIO without pull-up resistors or level shifters |
| Pin-selectable hysteresis | 2°C or 10°C hysteresis selection via single external connection - avoids software configuration overhead |
| Micropower operation | 30µA supply current allows continuous monitoring in energy-constrained applications such as IoT edge nodes |
Applications
| Server CPU Thermal Shutdown | Industrial PLC Cold-Start Protection |
|---|---|
Use Scenario: Monitors ambient temperature near server CPU during cold boot to prevent condensation-induced short circuits before full thermal stabilization. IC Role / Device Role / Timing Role: Cold-temperature threshold detector asserting high at +15°C to block power-on sequence until safe ambient conditions are met. Use Value: Prevents hardware damage from moisture ingress by enforcing minimum ambient preconditioning before system initialization. |
Use Scenario: Installed in programmable logic controller enclosures deployed in unheated outdoor substations where winter temperatures drop below -20°C. IC Role / Device Role / Timing Role: Low-temperature alarm generator that disables outputs and triggers heater activation when enclosure temperature falls below +15°C. Use Value: Maintains functional integrity of analog I/O modules by preventing operation outside specified cold limits, avoiding sensor drift and signal corruption. |
| Medical Imaging Power Supply Enable | Automotive Battery Management Preconditioning |
Use Scenario: Embedded in MRI power supply module to ensure stable DC rail generation only when ambient temperature exceeds +15°C, avoiding capacitor derating effects. IC Role / Device Role / Timing Role: Cold-trip enable switch that gates main DC-DC converter startup until thermal stability is confirmed. Use Value: Guarantees electrolytic capacitor lifetime and regulation accuracy by enforcing minimum operating temperature before high-current delivery. |
Use Scenario: Mounted on EV battery pack control board to monitor coolant loop temperature prior to high-voltage contactor closure during cold-soak conditions. IC Role / Device Role / Timing Role: Cold-threshold interlock that holds BMS in standby mode until coolant reaches +15°C, preventing lithium plating during charging. Use Value: Extends battery cycle life and improves safety by enforcing electrochemical preconditioning before high-rate charge/discharge cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar cold-threshold temperature switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6503UKP015 | Same +15°C cold-trip threshold and SOT23-5 package, but features open-drain active-low output requiring external pull-up | Requires external 100kΩ pull-up resistor and interfaces with µP reset inputs; not suitable for direct fan-control logic drive | Select MAX6503UKP015 only when interfacing with legacy microprocessor reset inputs needing active-low assertion |
| LM75BIMM-3/NOPB | Digital I²C temperature sensor with programmable thresholds; no factory-trimmed cold-trip switch function; 3.5mA active current vs. 30µA | Requires MCU firmware support, I²C bus resources, and periodic polling - unsuitable for autonomous, zero-software thermal alarms | Choose LM75BIMM-3/NOPB only when system already uses I²C infrastructure and needs multiple configurable thresholds, not simple cold-alarm assertion |
Compared with MAX6504UKP015, MAX6503UKP015 demands external biasing and lacks direct logic-drive capability, while LM75BIMM-3/NOPB introduces software dependency and 100× higher active current - making MAX6504UKP015 the optimal choice for autonomous, low-power, cold-threshold assertion in resource-constrained systems.
Availability
MAX6504UKP015 is available at Aetrix Electronics and suitable for industrial PLC cold-start protection, medical imaging power supply enable, automotive battery management preconditioning, and server CPU thermal shutdown requiring stable component supply and guaranteed cold-threshold performance.
Supply support for MAX6504UKP015 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, communications, and computing applications, emphasizing integration, reliability, and low-power operation.
The MAX6501–MAX6504 family was developed to deliver cost-effective, fully integrated thermal monitoring solutions for embedded systems requiring autonomous, zero-calibration temperature alarms with micropower consumption.
FAQ
What is the exact temperature trip point of the MAX6504UKP015?
The MAX6504UKP015 has a factory-programmed cold-temperature trip threshold of +15°C. It asserts its active-high push-pull output (TUNDER pin) when the die temperature falls below this value. This threshold is trimmed during manufacturing and specified with ±0.5°C typical accuracy over the full -55°C to +125°C operating range.
Does the MAX6504UKP015 require external components to operate?
No, the MAX6504UKP015 requires no external components for basic operation. Its push-pull output eliminates the need for pull-up resistors, and internal references and comparator are fully integrated. Only proper PCB layout - including connecting both GND pins and using short, wide copper traces for thermal coupling - is required to achieve specified accuracy and response.
How is hysteresis configured on the MAX6504UKP015?
Hysteresis on the MAX6504UKP015 is set via the HYST pin: connect HYST to GND for 2°C hysteresis or to VCC for 10°C hysteresis. This pin must not be left floating, as intermediate voltages increase supply current. The actual hysteresis value also depends on the programmed trip point, as confirmed in the device's Typical Operating Characteristics graph.
What is the output drive capability of the MAX6504UKP015?
The MAX6504UKP015 push-pull output can source up to 800µA (with VOH ≥ VCC – 1.5V at VCC > 4.5V) and sink up to 3.2mA (with VOL ≤ 0.4V at VCC > 4.5V). This allows direct interface with standard CMOS/TTL logic inputs, fan control logic, or optocoupler LEDs without additional buffering or level-shifting circuitry.
Can the MAX6504UKP015 be used in a temperature window alarm configuration?
Yes, the MAX6504UKP015 is designed for temperature window alarms when paired with a hot-threshold device like MAX6502UKP075. Its TUNDER output (active high below +15°C) and the MAX6502's TOVER output (active high above +75°C) can be wire-ORed using a single external resistor to generate a unified out-of-range signal - a documented architecture in the MAX6501–MAX6504 datasheet Figure 4.
MAX6504UKP015 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:
- Cold
- Switching Temperature:
- -15°C
- Accuracy:
- ±4°C
- Current - Output (Max):
- 20mA
- Output Type:
- Push-Pull
- Output:
- Active High
- Output Function:
- UnderTemp
- 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:
- Automotive
- Qualification:
- AEC-Q100
- Supplier Device Package:
- SOT-23-5
MAX6504UKP015 FAQ
1.How can I place an order for MAX6504UKP015 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6504UKP015 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 MAX6504UKP015 reliable?
The price and inventory of MAX6504UKP015 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6504UKP015 is usually 5 days.
3.What payment methods are accepted for MAX6504UKP015?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6504UKP015 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6504UKP015?
MAX6504UKP015 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6504UKP015 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 MAX6504UKP015?
For technical support, including MAX6504UKP015 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6504UKP015 requirements.
6.How does Aetrix verify that MAX6504UKP015 is sourced from the original manufacturer or authorized distributors?
All MAX6504UKP015 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 MAX6504UKP015 meets industry standards.
7.What is the process for return or replacement of MAX6504UKP015?
All MAX6504UKP015 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6504UKP015, 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 MAX6504UKP015 part is unused and in its original packaging.
Return procedure for MAX6504UKP015:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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