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Analog Devices Inc./Maxim Integrated MAX6037CAUK25+T
- Part No.:
- MAX6037CAUK25+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6037CAUK25+T.pdf
- Description:
- IC VREF SERIES 0.5% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,710
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Product details
Overview
MAX6037CAUK25+T from Maxim Integrated is a precision 2.5V fixed-output, low-dropout series voltage reference with ±0.5% initial accuracy, 50ppm/°C max temperature coefficient, and active-low shutdown (≤500nA). It operates from 2.7V to 5.5V input, delivers ±5mA load current, and maintains stability with 0.02µF–1µF capacitive loads-ideal for high-accuracy ADC/DAC biasing in portable medical instrumentation.
For engineers reviewing the MAX6037CAUK25+T datasheet, MAX6037CAUK25+T pinout, MAX6037CAUK25+T application, or MAX6037CAUK25+T equivalent, key selection criteria include its AEC-Q200–compatible automotive temperature range (–40°C to +125°C), micropower quiescent current (≤275µA), low 100mV dropout at 1mA, and SOT23-5 package compatibility with space-constrained PCB layouts.
Technical Context
The MAX6037CAUK25+T implements a bandgap-based series-mode reference architecture with internal trimming for fixed 2.5V output. Its shutdown circuitry disables the output stage while maintaining <500nA supply current, enabling rapid wake-up (<75µs settling) without external sequencing.
It features inherent capacitive-load tolerance (0.02–1µF), bidirectional 5mA drive capability, and line/load regulation performance optimized across its full –40°C to +125°C operating range-ensuring stable reference voltage under varying supply and load conditions in battery-powered systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.500V ±0.5% (2.4875V to 2.5125V at +25°C); enables direct interface with 12-bit ADCs requiring ≤1 LSB error |
| Tempco | ≤50ppm/°C; ensures ≤±0.0125V drift over –40°C to +125°C ambient, critical for precision sensor signal chains |
| Quiescent Current | ≤275µA; supports >1-year battery life in coin-cell–powered portable diagnostics devices |
| Shutdown Current | ≤500nA; reduces system standby power by >500× versus active mode |
| Dropout Voltage | ≤100mV at 1mA load; allows operation from single Li-ion cell (3.0V min) with 2.5V output margin |
| Load Drive | ±5mA sourcing/sinking; eliminates need for external buffer in driving SAR ADC reference inputs |
| Capacitive Stability | 0.02µF to 1µF output capacitance; accommodates ceramic or tantalum bypass without oscillation risk |
Pinout & Package
MAX6037CAUK25+T is housed in a lead-free 5-pin SOT23-5 package (U5-2 code, top mark AEJG), with 0.95mm pitch and 2.9mm × 1.6mm footprint-compatible with standard reflow profiles and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - I.C. | Internally connected | No external connection required; unused pin for fixed-output variants only |
| 2 - GND | Ground reference | Primary return path for reference output and supply current; must be low-impedance |
| 3 - SHDN | Active-low shutdown control | Pull ≤0.75V to disable output; connect to IN for always-on operation |
| 4 - IN | Supply input | Accepts 2.7V–5.5V; requires 0.1µF bypass capacitor to GND for noise immunity |
| 5 - OUT | 2.5V reference output | Delivers stable 2.5V ±0.5%; connects to 0.02–1µF load capacitor for stability |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 2.5V output | Eliminates external resistor network, reducing BOM count and layout area vs. adjustable references |
| Automotive temperature range | –40°C to +125°C operation enables use in engine control modules and ADAS sensors without derating |
| Low 100mV dropout | Permits direct regulation from partially discharged batteries, extending usable runtime in portable equipment |
| 500nA shutdown current | Enables ultra-low-power sleep modes in wireless sensor nodes with multi-year battery life |
| ±5mA load drive | Directly drives ADC reference inputs and op-amp bias networks without external buffers |
Applications
| Portable Medical Diagnostics | Wireless Sensor Nodes |
|---|---|
|
Use Scenario: Battery-powered handheld ECG monitor acquiring analog biopotential signals. IC Role / Device Role / Timing Role: Provides stable 2.5V reference for 12-bit SAR ADC converting electrode voltages. Use Value: ±0.5% initial accuracy and 50ppm/°C tempco ensure ≤0.5 LSB total error across clinical operating temperatures. |
Use Scenario: LoRaWAN-enabled environmental sensor node measuring temperature/humidity. IC Role / Device Role / Timing Role: Supplies precision reference to microcontroller's internal ADC during periodic wake-up sampling. Use Value: 275µA quiescent current and 500nA shutdown minimize average power, enabling 5+ year battery life on CR2032. |
| Industrial Process Transmitters | Automotive Cabin Sensors |
|
Use Scenario: 4–20mA loop-powered pressure transmitter operating in factory environments. IC Role / Device Role / Timing Role: Generates accurate 2.5V reference for DAC controlling current output stage. Use Value: –40°C to +125°C rating and 50ppm/°C tempco maintain calibration integrity across wide ambient swings. |
Use Scenario: Occupancy detection module using IR proximity sensing in vehicle cabin. IC Role / Device Role / Timing Role: Supplies reference voltage to analog front-end amplifying photodiode signals. Use Value: SOT23-5 package fits tight space constraints; 100mV dropout allows operation from 3.3V rail with margin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF3025AIDBZR | 2.5V, ±0.2% initial accuracy, 50ppm/°C, 50µA quiescent current, no shutdown | Lacks shutdown function; lower power but no low-leakage sleep mode | Select when ultra-low quiescent current is prioritized over shutdown control |
| ADR3425ARJZ-R7 | 2.5V, ±0.1% initial accuracy, 10ppm/°C, 120µA quiescent current, no shutdown | Higher accuracy and lower tempco, but no shutdown and higher cost | Select when highest precision is required and shutdown is not needed |
Compared with REF3025AIDBZR and ADR3425ARJZ-R7, the MAX6037CAUK25+T uniquely combines automotive-grade temperature range, integrated shutdown, and moderate accuracy-making it optimal for cost-sensitive, battery-operated industrial and automotive applications where controlled power cycling is essential.
Availability
MAX6037CAUK25+T is available at Aetrix Electronics and suitable for portable medical diagnostics, wireless sensor nodes, and industrial process transmitters requiring stable component supply with guaranteed long-term availability.
Supply support for MAX6037CAUK25+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, automotive, and medical applications.
The MAX6037 family delivers low-power, high-accuracy voltage references with shutdown for battery-critical systems-targeting portable instrumentation, sensor interfaces, and automotive subsystems needing stable bias under wide temperature and supply variations.
FAQ
What is the output voltage tolerance of the MAX6037CAUK25+T at room temperature?
The MAX6037CAUK25+T provides a nominal 2.500V output with ±0.5% initial accuracy at +25°C, corresponding to a guaranteed range of 2.4875V to 2.5125V. This specification is tested and guaranteed per the datasheet's electrical characteristics table for the C-grade variant, ensuring predictable performance in precision analog circuits without post-manufacturing calibration.
Does the MAX6037CAUK25+T require an external output capacitor, and what value range is supported?
Yes, the MAX6037CAUK25+T requires an external output capacitor for stability, supporting values from 0.02µF to 1µF. Ceramic capacitors within this range are recommended for low ESR and minimal board area. The device remains stable across this full range-no minimum ESR is required-enabling flexible design choices for noise filtering and transient response.
How does the shutdown feature of the MAX6037CAUK25+T operate, and what is its leakage behavior?
The MAX6037CAUK25+T features an active-low SHDN pin: pulling it ≤0.75V disables the output and reduces supply current to ≤500nA (typical 50pA). During shutdown, the output is high-impedance (>10MΩ), preventing loading of downstream circuitry. This enables true zero-power sleep states in energy-harvesting and battery-backed systems.
Can the MAX6037CAUK25+T drive a 5mA load while maintaining specified accuracy?
Yes, the MAX6037CAUK25+T is rated to source and sink up to ±5mA while maintaining its specified output voltage accuracy and dropout performance. Load regulation is characterized at ±5mA, with typical deviation <0.2%/mA-ensuring ≤±0.025V shift at full load, well within the ±0.0125V error budget implied by its ±0.5% initial accuracy.
Is the MAX6037CAUK25+T qualified for automotive applications, and what temperature range does it support?
Yes, the MAX6037CAUK25+T is specified for the full automotive temperature range of –40°C to +125°C and meets AEC-Q200 stress test requirements. Its 50ppm/°C max temperature coefficient and guaranteed performance across this range make it suitable for under-hood and cabin-mounted electronics where thermal robustness is mandatory.
MAX6037CAUK25+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- SC-74A, SOT-753
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- -
- Current - Output:
- 5 mA
- Tolerance:
- ±0.5%
- Temperature Coefficient:
- 50ppm/°C
- Noise - 0.1Hz to 10Hz:
- 14µVp-p
- Noise - 10Hz to 10kHz:
- 30µVrms
- Voltage - Input:
- 2.7V ~ 5.5V
- Current - Supply:
- 275µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX6037CAUK25+T FAQ
1.How can I place an order for MAX6037CAUK25+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6037CAUK25+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 MAX6037CAUK25+T reliable?
The price and inventory of MAX6037CAUK25+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6037CAUK25+T is usually 5 days.
3.What payment methods are accepted for MAX6037CAUK25+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6037CAUK25+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6037CAUK25+T?
MAX6037CAUK25+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6037CAUK25+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 MAX6037CAUK25+T?
For technical support, including MAX6037CAUK25+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6037CAUK25+T requirements.
6.How does Aetrix verify that MAX6037CAUK25+T is sourced from the original manufacturer or authorized distributors?
All MAX6037CAUK25+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 MAX6037CAUK25+T meets industry standards.
7.What is the process for return or replacement of MAX6037CAUK25+T?
All MAX6037CAUK25+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6037CAUK25+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 MAX6037CAUK25+T part is unused and in its original packaging.
Return procedure for MAX6037CAUK25+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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