My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6505UTP040+T
- Part No.:
- MAX6505UTP040+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Thermostats - Solid State
- Package:
- SOT-23-6
- Datasheet:
-
MAX6505UTP040+T.pdf
- Description:
- IC TEMP SWITCH DL TRIP SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,446
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6505UTP040+T from Maxim Integrated is a dual-threshold, open-drain temperature switch with factory-programmed ALARM trip at +40°C and WARN trip at +30°C (ΔTAW = +10°C), operating from +2.5V to +5.5V, consuming 30µA typical supply current, and housed in a 6-pin SOT23 package for microprocessor thermal monitoring and fan control.
For engineers reviewing the MAX6505UTP040+T datasheet, MAX6505UTP040+T pinout, MAX6505UTP040+T application, or MAX6505UTP040+T equivalent, key selection criteria include its ±0.5°C typical threshold accuracy over -40°C to +125°C, pin-selectable ΔTAW (5/10/20/30°C), open-drain ALARM/WARN outputs, and absence of external components for trip-point configuration.
Technical Context
The MAX6505UTP040+T integrates two precision bandgap references-one with positive and one with negative temperature coefficient-to generate a voltage-crossing-based trip point at +40°C (ALARM) and +30°C (WARN). Its comparator architecture delivers hysteresis of 2°C on ALARM and 5°C on WARN when ΔTAW = +10°C.
Control pins S0 and S1 are hardwired to VCC and GND respectively to configure ΔTAW = +10°C; no pull-up resistors are required on outputs due to internal design compatibility with standard logic interfaces. The device asserts ALARM low and WARN low upon crossing their respective thresholds.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.5V to +5.5V - supports direct connection to common logic rails without regulation. |
| ALARM Trip Temperature | +40°C (factory-programmed) - triggers system alarm before critical thermal limits are reached. |
| WARN Trip Temperature | +30°C (factory-programmed, ΔTAW = +10°C) - provides early warning margin for thermal management response. |
| Threshold Accuracy | ±0.5°C (typ), ±5.5°C (max) - enables precise thermal event detection across full -40°C to +125°C range. |
| Supply Current | 30µA (typ) - minimizes self-heating (<0.3°C die rise) and extends battery life in portable systems. |
| Output Type | Open-drain ALARM and WARN - allows wired-OR configuration and flexible voltage-level translation. |
| Hysteresis | ALARM: 2°C; WARN: 5°C - prevents output chatter near trip points under slow thermal transients. |
Pinout & Package
MAX6505UTP040+T is packaged in a RoHS-compliant 6-pin SOT23 (U6SN+1) with 1.27mm pitch, footprint-compatible with JEDEC MO-178AB, and optimized for surface-mount assembly on space-constrained PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | WARN | Open-drain active-low warning output; pulled low when die temperature exceeds +30°C. |
| 2 | GND | Ground reference for all internal circuitry and output sinking paths. |
| 3 | S1 | Delta temperature select input; tied to GND to set ΔTAW = +10°C (per Table 1). |
| 4 | VCC | Positive supply input; requires 0.1µF ceramic bypass capacitor placed adjacent to pin. |
| 5 | S0 | Delta temperature select input; tied to VCC to set ΔTAW = +10°C (per Table 1). |
| 6 | ALARM | Open-drain active-low alarm output; pulled low when die temperature exceeds +40°C. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent trip points | +40°C ALARM and +30°C WARN enable staged thermal response-fan activation followed by shutdown. |
| No external components required | Factory-programmed thresholds eliminate calibration resistors, trimmers, or external sensors. |
| Low quiescent current | 30µA typical supply draw reduces thermal loading and simplifies power budgeting in always-on systems. |
| Pin-selectable ΔTAW | S0/S1 logic states configure 5/10/20/30°C separation between WARN and ALARM thresholds. |
| ±0.5°C typical accuracy | Ensures reliable triggering within tight thermal margins-critical for high-speed CPU and GPU monitoring. |
Applications
| Microprocessor Thermal Monitoring | Fan Speed Control |
|---|---|
|
Use Scenario: Real-time die temperature tracking of x86 or ARM-based CPUs during burst workloads. IC Role / Device Role / Timing Role: Dual-threshold switch providing early WARN (+30°C) and critical ALARM (+40°C) signals to host controller. Use Value: Enables deterministic thermal throttling before silicon reliability limits are breached, with <0.3°C self-heating impact. |
Use Scenario: Dynamic cooling control in embedded industrial controllers where ambient temperature varies widely. IC Role / Device Role / Timing Role: Direct drive of N-channel MOSFET gate via open-drain WARN output to activate fan at +30°C. Use Value: Eliminates need for level-shifting or driver ICs-fan starts smoothly without overshoot or oscillation. |
| Power Supply Overtemperature Protection | Industrial PLC Module Monitoring |
|
Use Scenario: Safeguarding DC-DC converter modules against thermal runaway in telecom power systems. IC Role / Device Role / Timing Role: ALARM output connected to enable/disable pin of PMIC to halt switching at +40°C. Use Value: Prevents catastrophic failure by cutting power before electrolytic capacitors exceed rated temperature. |
Use Scenario: Monitoring ambient temperature inside sealed DIN-rail mounted PLC enclosures. IC Role / Device Role / Timing Role: WARN signal initiates forced air circulation; ALARM signal triggers safe-state shutdown sequence. Use Value: Maintains functional safety compliance (IEC 61508) through deterministic, hardware-based thermal escalation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar temperature switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6506UTP040+T | Push-pull (active-high) ALARM/WARN outputs vs. MAX6505UTP040+T's open-drain (active-low) outputs. | Requires no external pull-up resistors but cannot be wired-OR'd with other alarms. | Select MAX6506UTP040+T when interfacing directly with CMOS inputs needing active-high assertion and no shared-bus topology. |
| LM75BIMM/NOPB | I²C digital interface with 9-bit temperature register vs. MAX6505UTP040+T's analog-comparator-based dual digital outputs. | Supports software-configurable thresholds and remote polling; lacks hardware-fast response for critical alarms. | Choose LM75BIMM/NOPB when system firmware can manage thermal policy and multiple sensor nodes must share a bus. |
Compared with MAX6505UTP040+T, MAX6506UTP040+T offers simplified interface at the cost of wiring flexibility, while LM75BIMM/NOPB adds configurability and multi-drop capability but introduces latency and MCU dependency for alarm generation.
Availability
MAX6505UTP040+T is available at Aetrix Electronics and suitable for microprocessor thermal monitoring, fan speed control, and power supply overtemperature protection requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for MAX6505UTP040+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 demanding industrial, computing, and communications applications.
The MAX6505–MAX6508 family was developed specifically for hardware-based, zero-latency thermal safety in high-reliability embedded systems where software-controlled monitoring is insufficient.
FAQ
What is the exact ALARM and WARN trip temperature for MAX6505UTP040+T?
The MAX6505UTP040+T has a factory-programmed ALARM trip temperature of +40°C and a WARN trip temperature of +30°C, resulting from the +10°C delta (ΔTAW) selected by tying S1 to GND and S0 to VCC. These values are laser-trimmed during production and guaranteed across -40°C to +125°C ambient operation.
Does MAX6505UTP040+T require external pull-up resistors on its outputs?
Yes, MAX6505UTP040+T requires external pull-up resistors on both ALARM and WARN pins because it features open-drain outputs. A 10kΩ to 100kΩ resistor to VCC is typical; value selection balances rise time, power consumption, and noise immunity per application requirements.
Can MAX6505UTP040+T be used in a system powered by 3.3V?
Yes, MAX6505UTP040+T operates over a supply range of +2.5V to +5.5V, making it fully compatible with 3.3V systems. Its output voltage low (VOL) remains ≤0.5V at 3.3V supply with 3.2mA sink current, ensuring clean logic-low signaling into standard CMOS inputs.
How is hysteresis implemented in MAX6505UTP040+T?
MAX6505UTP040+T implements fixed hysteresis: 2°C on the ALARM output and 5°C on the WARN output (due to ΔTAW = +10°C). This hysteresis is internal and non-adjustable-no external components or pins configure it. It prevents output oscillation during slow thermal transitions near trip points.
Is MAX6505UTP040+T RoHS-compliant and lead-free?
Yes, MAX6505UTP040+T carries the "+" suffix indicating full RoHS compliance and lead-free construction per EU Directive 2011/65/EU. The SOT23 package uses matte tin lead finish and meets JEDEC J-STD-020 moisture sensitivity level 1 (MSL-1) for unlimited floor life.
MAX6505UTP040+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Trip Temperature Threshold:
- Hot
- Switching Temperature:
- 40°C
- Accuracy:
- ±3.5°C
- Current - Output (Max):
- 20mA
- Output Type:
- Open Drain
- Output:
- Active Low
- Output Function:
- /OverTemp, /Warn
- Selectable Hysteresis:
- No
- Features:
- Delta Select Inputs
- Voltage - Supply:
- 2.5 V ~ 5.5 V
- Current - Supply:
- 40µA
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- SOT-6
MAX6505UTP040+T FAQ
1.How can I place an order for MAX6505UTP040+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6505UTP040+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 MAX6505UTP040+T reliable?
The price and inventory of MAX6505UTP040+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6505UTP040+T is usually 5 days.
3.What payment methods are accepted for MAX6505UTP040+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6505UTP040+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6505UTP040+T?
MAX6505UTP040+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6505UTP040+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 MAX6505UTP040+T?
For technical support, including MAX6505UTP040+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6505UTP040+T requirements.
6.How does Aetrix verify that MAX6505UTP040+T is sourced from the original manufacturer or authorized distributors?
All MAX6505UTP040+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 MAX6505UTP040+T meets industry standards.
7.What is the process for return or replacement of MAX6505UTP040+T?
All MAX6505UTP040+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6505UTP040+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 MAX6505UTP040+T part is unused and in its original packaging.
Return procedure for MAX6505UTP040+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6505UTP040+T Tags
-
N34TS04MT3ETG
onsemi
-
MCP9501PT-095E/OT
Microchip Technology
-
TMP390AQDRLRQ1
Texas Instruments
-
TC6501P125VCTTR
Microchip Technology
-
LM26CIM5-RPA/NOPB
Texas Instruments
-
MCP9509HT-E/OT
Microchip Technology
-
MCP9509CT-E/OT
Microchip Technology
-
MCP9510HT-E/CH
Microchip Technology
-
TC622VOA
Microchip Technology
-
TC620CEOA
Microchip Technology
-
TC622VAT
Microchip Technology
-
MAX6509HAUK+T
Analog Devices Inc./Maxim Integrated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
