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Analog Devices Inc./Maxim Integrated MAX6504UKP015+T
- Part No.:
- MAX6504UKP015+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Thermostats - Solid State
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6504UKP015+T.pdf
- Description:
- THERMOSTAT 15DEGC ACT HI SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,505
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Product details
Overview
MAX6504UKP015+T from Maxim Integrated is a cold-temperature threshold, push-pull output temperature switch with factory-programmed trip point of +15°C, ±0.5°C typical accuracy, 2.7V–5.5V supply range, and pin-selectable 2°C/10°C hysteresis - used for low-power fan control and thermal alarm triggering in embedded systems.
For engineers reviewing the MAX6504UKP015+T datasheet, MAX6504UKP015+T pinout, MAX6504UKP015+T application, or MAX6504UKP015+T equivalent, this page delivers verified functional identity, SOT23-5 package mapping, confirmed cold-threshold behavior (asserts high when die temperature falls below +15°C), push-pull drive capability (800µA source / 3.2mA sink), and real-world thermal monitoring use cases without external components.
Technical Context
The MAX6504UKP015+T integrates dual on-chip temperature-dependent voltage references (one positive, one negative TC) and a comparator to define its precise +15°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 drives fan-control logic directly without pull-up resistors, unlike 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 |
| Accuracy (typ) | ±0.5°C over full operating range - enables tight thermal control without calibration |
| Supply Voltage | +2.7V to +5.5V - compatible with 3.3V and 5V logic rails in industrial and computing systems |
| Supply Current | 30µA typical - supports battery-powered and micropower thermal monitoring |
| Output Type | Push-pull active-high - sinks up to 3.2mA or sources up to 800µA, eliminating external pull-up |
| Hysteresis Options | 2°C (HYST = GND) or 10°C (HYST = VCC) - selectable per PCB layout, no firmware change needed |
| Operating Temp Range | -55°C to +135°C - validated for harsh environments including automotive under-hood and industrial control |
Pinout & Package
SOT23-5 package with exposed pad thermal path; pins 1 and 2 both connected to GND (pin 2 provides lowest thermal resistance to die); compact 2.9mm × 1.6mm footprint ideal for space-constrained PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 GND | Ground reference and thermal path | Both pins must be connected to system ground; pin 2 offers lowest θJA for accurate die temperature tracking |
| 3 HYST | Hysteresis selection input | CMOS-compatible; tie to GND for 2°C hysteresis, to VCC for 10°C - floating not allowed |
| 4 VCC | Positive supply input | Accepts +2.7V to +5.5V; powers internal references, comparator, and output stage |
| 5 TUNDER | Cold-trip active-high output | Push-pull: drives high when die temp < +15°C; sinks 3.2mA / sources 800µA at VCC > 4.5V |
Key Features
| Feature | Design Value |
|---|---|
| No external components required | Self-contained thermal sensing and switching - reduces BOM count and layout complexity |
| Factory-programmed +15°C threshold | Eliminates need for trimming resistors or calibration during production |
| Pin-selectable hysteresis | Enables field-adjustable thermal stability without changing firmware or hardware revision |
| 30µA supply current | Extends battery life in portable thermal monitors and enables always-on sensing |
| SOT23-5 package | Standardized footprint compatible with automated assembly and reflow processes |
Applications
| Microprocessor Thermal Reset | Fan Speed Control |
|---|---|
Use Scenario: Monitoring CPU die temperature in embedded computers to prevent thermal runaway. IC Role / Device Role / Timing Role: Cold-temperature switch asserting high when processor cools below +15°C - used as wake-up or safe-boot signal. Use Value: Enables deterministic cold-start sequencing without software polling or ADC overhead. |
Use Scenario: Activating cooling fans only when ambient or board temperature drops below +15°C - e.g., in HVAC control panels. IC Role / Device Role / Timing Role: Direct drive of fan-enable logic via push-pull output; eliminates level-shifting circuitry. Use Value: Reduces component count and power loss versus open-drain + pull-up solutions. |
| Industrial Temperature Alarm | Fail-Safe Thermal Window Monitor |
Use Scenario: Detecting abnormal cooling in industrial PLC enclosures during winter operation. IC Role / Device Role / Timing Role: Cold-trip alarm output triggers audible/visual alert when enclosure temperature falls below +15°C. Use Value: Prevents condensation-induced corrosion or lubricant viscosity issues before equipment failure. |
Use Scenario: Paired with a hot-trip device (e.g., MAX6502UKP075) to define a thermal window (-5°C to +75°C). IC Role / Device Role / Timing Role: Provides TUNDER signal for OR-combined out-of-range detection in safety-critical systems. Use Value: Enables single-wire thermal fault signaling without microcontroller intervention. |
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+T | Same +15°C cold threshold and SOT23-5 package, but open-drain active-low output | Requires external pull-up resistor; suited for µP reset inputs with active-low assertion | Select MAX6503UKP015+T only if interfacing with legacy reset logic requiring open-drain compatibility |
| LM75BIMM/NOPB | Digital I²C temperature sensor with programmable thresholds; no factory-trimmed analog switch function | Provides full temperature readback and configurable hysteresis via register writes - not a direct replacement | Choose LM75BIMM/NOPB when system requires temperature telemetry, not just binary trip detection |
Compared with MAX6504UKP015+T, MAX6503UKP015+T demands external biasing and lacks direct drive capability, while LM75BIMM/NOPB adds communication overhead and firmware dependency - making MAX6504UKP015+T optimal for simple, low-latency, zero-software thermal alarms.
Availability
MAX6504UKP015+T is available at Aetrix Electronics and suitable for industrial temperature alarms, embedded fan control, and microprocessor thermal reset applications requiring stable component supply and long-term lifecycle support.
Supply support for MAX6504UKP015+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, mixed-signal, and power management ICs for industrial, computing, and automotive applications.
The MAX6501–MAX6504 family was engineered as fully integrated, micropower temperature switches targeting cost-sensitive, space-constrained thermal monitoring where simplicity and reliability outweigh digital telemetry needs.
FAQ
What is the exact temperature trip behavior of the MAX6504UKP015+T?
The MAX6504UKP015+T is a cold-temperature switch with a factory-programmed threshold of +15°C. Its TUNDER output asserts high when the die temperature falls below +15°C and remains high until temperature rises above (+15°C + hysteresis). Hysteresis is 2°C if HYST = GND, or 10°C if HYST = VCC. This behavior is confirmed in the MAX6504UKP015+T datasheet Section "General Description" and Pin Configuration diagrams.
Does the MAX6504UKP015+T require external components to operate?
No, the MAX6504UKP015+T requires no external components. It integrates all necessary references, comparator, and push-pull output driver. Unlike open-drain variants (e.g., MAX6503), it does not need a pull-up resistor. Power is supplied directly to VCC (Pin 4), GND (Pins 1 & 2), and HYST (Pin 3) is tied to either rail - all confirmed in the "Features" and "Typical Operating Circuit" sections of the MAX6504UKP015+T datasheet.
What is the supply current consumption of the MAX6504UKP015+T across temperature?
The MAX6504UKP015+T consumes 30µA typical supply current over the full -55°C to +135°C operating range, with minimal variation shown in Figure TOC01 ("Supply Current vs. Temperature"). At +25°C, typical ICC is 30µA; maximum is 85µA. This low quiescent current enables battery-operated thermal monitoring and reduces self-heating effects (<0.042°C shift at 1mA sink), as specified in the MAX6504UKP015+T Electrical Characteristics table.
Can the MAX6504UKP015+T drive a fan directly?
Yes, the MAX6504UKP015+T can drive fan-enable logic directly via its push-pull TUNDER output (Pin 5). It sources up to 800µA and sinks up to 3.2mA (at VCC > 4.5V), sufficient for TTL/CMOS fan control inputs. Figure 3 ("Overtemperature Fan Control") in the MAX6504UKP015+T datasheet shows direct connection to fan circuitry without buffering - confirming true direct-drive capability.
How is thermal accuracy maintained in the MAX6504UKP015+T?
The MAX6504UKP015+T achieves ±0.5°C typical threshold accuracy using matched on-die positive- and negative-temperature-coefficient voltage references and factory laser trimming. Accuracy is guaranteed over -55°C to +135°C (Note 1 in Electrical Characteristics), with thermal self-heating limited to <0.042°C due to 30µA supply current and 140°C/W θJA. Pin 2's low thermal resistance ensures die temperature tracks package temperature closely - all verified in the MAX6504UKP015+T Applications Information section.
MAX6504UKP015+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:
- 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:
- -
- Voltage - Supply:
- 2.7 V ~ 5.5 V
- Current - Supply:
- 30µA
- Operating Temperature:
- -55°C ~ 135°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- SOT-23-5
MAX6504UKP015+T FAQ
1.How can I place an order for MAX6504UKP015+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6504UKP015+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 MAX6504UKP015+T reliable?
The price and inventory of MAX6504UKP015+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6504UKP015+T is usually 5 days.
3.What payment methods are accepted for MAX6504UKP015+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6504UKP015+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6504UKP015+T?
MAX6504UKP015+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6504UKP015+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 MAX6504UKP015+T?
For technical support, including MAX6504UKP015+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6504UKP015+T requirements.
6.How does Aetrix verify that MAX6504UKP015+T is sourced from the original manufacturer or authorized distributors?
All MAX6504UKP015+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 MAX6504UKP015+T meets industry standards.
7.What is the process for return or replacement of MAX6504UKP015+T?
All MAX6504UKP015+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6504UKP015+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 MAX6504UKP015+T part is unused and in its original packaging.
Return procedure for MAX6504UKP015+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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