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Analog Devices Inc./Maxim Integrated MAX6037CAUK30-T
- Part No.:
- MAX6037CAUK30-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6037CAUK30-T.pdf
- Description:
- LOW-POWER, FIXED REFERENCE
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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Product details
Overview
MAX6037CAUK30-T from Maxim Integrated is a low-dropout, micropower voltage reference with fixed 3.0V output, ±0.5% initial accuracy (A-grade: ±0.2%), 50ppm/°C max temperature coefficient, 2.5V–5.5V input range, and active-low shutdown consuming ≤500nA. It operates across –40°C to +125°C and delivers ±5mA load current-ideal for precision battery-powered instrumentation requiring stable 3.0V bias in medical sensors or portable wireless transceivers.
For engineers reviewing the MAX6037CAUK30-T datasheet, MAX6037CAUK30-T pinout, MAX6037CAUK30-T application, or MAX6037CAUK30-T equivalent, this page provides verified electrical parameters, automotive-grade thermal performance, SOT23-5 package layout, and real-world design guidance for low-quiescent-current reference selection in space-constrained embedded systems.
Technical Context
The MAX6037CAUK30-T is a series-mode bandgap voltage reference with internal trimming for fixed 3.0V output. Its shutdown circuitry uses an active-low logic input (VENL ≤ 0.8V at VIN ≥ 3.2V) to disable regulation and reduce supply current to <500nA while maintaining high output impedance (>300kΩ).
It features low dropout (≤100mV at 1mA), capacitive-load stability with 0.02µF–1µF output capacitance, and robust line/load regulation (≤0.0133%/V and ≤0.2%/mA). Designed for automotive environments, it guarantees operation over –40°C to +125°C with thermal hysteresis of 501ppm and long-term stability of 133ppm/1000h.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.000V ±0.5% (min/max 2.985V/3.015V at +25°C); enables accurate ADC/DAC biasing without external calibration. |
| Initial Accuracy | ±0.5% (Grade C); tighter than Grade B (±0.3%) and Grade A (±0.2%), suitable for cost-sensitive industrial sensing. |
| Tempco | 50ppm/°C max; ensures ≤15mV drift over –40°C to +125°C ambient, critical for automotive sensor signal chains. |
| Quiescent Current | 210–275µA; supports >1-year battery life in 10µA-average-power IoT nodes with periodic wake-up. |
| Shutdown Current | ≤500nA; reduces system standby power by >99% versus active mode-key for always-on monitoring circuits. |
| Dropout Voltage | ≤100mV at 1mA load; allows operation from 3.1V supply when VOUT = 3.0V, maximizing battery utilization. |
| Supply Range | 3.2V to 5.5V; compatible with Li-ion (3.0–4.2V), 3.3V rails, and regulated 5V supplies. |
Pinout & Package
MAX6037CAUK30-T is housed in a 5-pin SOT23-5 package (U5-2 code, top mark AEJG), with 1.6mm × 2.9mm footprint and 1.1mm height-optimized for high-density PCB layouts in portable equipment.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - I.C. | Internally connected (no external connection) | Unused pin; must be left floating or grounded per layout best practice-no functional impact on 3.0V fixed-output variant. |
| 2 - GND | Ground reference | Low-impedance return path for reference output and internal bandgap; requires direct connection to clean analog ground plane. |
| 3 - SHDN | Active-low shutdown control | Pull ≤0.8V to disable output and reduce current to <500nA; tie to IN for always-on operation. |
| 4 - IN | Positive supply input | Accepts 3.2–5.5V; bypass with 0.1µF ceramic capacitor to GND to suppress supply noise and ensure stability. |
| 5 - OUT | 3.0V reference output | Delivers ±5mA; requires 0.02–1µF output capacitor to GND for transient response and phase margin control. |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 3.0V output | Eliminates external resistor network-reduces BOM count and layout area vs. adjustable references. |
| Automotive temperature range | –40°C to +125°C operation validated per AEC-Q100 stress tests; supports under-hood and infotainment applications. |
| Low 50ppm/°C tempco | Meets 12-bit ADC full-scale error budget (<0.012% FS) across full temperature range without software compensation. |
| Sub-500nA shutdown | Enables ultra-low-power sleep modes in portable medical devices where microamp-level leakage is unacceptable. |
| Capacitive-load stability | Stable with 0.02µF–1µF ceramic output caps-supports small-size 0402/0603 MLCCs and avoids tantalum dependencies. |
Applications
| Portable ECG Monitors | Automotive Tire Pressure Sensors |
|---|---|
|
Use Scenario: Battery-powered wearable ECG front-end digitizing biopotential signals at 1kSPS with 12-bit SAR ADC. IC Role / Device Role / Timing Role: Provides precise 3.0V reference for ADC VREF and op-amp biasing, ensuring <±1 LSB integral nonlinearity. Use Value: ±0.5% initial accuracy and 50ppm/°C tempco maintain diagnostic-grade signal fidelity across body-temperature variations and multi-year shelf life. |
Use Scenario: Wireless TPMS module operating inside tire cavity with 10-year lithium battery life requirement. IC Role / Device Role / Timing Role: Supplies stable 3.0V reference to pressure transducer amplifier and 10-bit ADC during periodic wake-up bursts. Use Value: 275µA quiescent current and 500nA shutdown extend battery life beyond 10 years; –40°C to +125°C rating survives extreme thermal cycling. |
| Industrial Wireless Sensor Nodes | Medical Pulse Oximeters |
|
Use Scenario: LoRaWAN node measuring temperature/humidity with 16-bit sigma-delta ADC and MCU. IC Role / Device Role / Timing Role: Delivers low-noise 3.0V reference for ADC and analog front-end, rejecting supply ripple via 60dB PSRR at 1kHz. Use Value: 0.0133%/V line regulation and 0.2%/mA load regulation prevent measurement drift during RF transmission current surges. |
Use Scenario: Handheld pulse oximeter using red/IR photodiode array and transimpedance amplifiers. IC Role / Device Role / Timing Role: Sets bias point for TIA and ADC reference, directly impacting SpO₂ saturation calculation accuracy. Use Value: 133ppm/1000h long-term stability ensures clinical-grade repeatability over device lifetime without recalibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6035AAUT30+T | Same 3.0V output, ±0.2% initial accuracy, 25ppm/°C tempco, but no shutdown function and higher 35µA quiescent current. | Lacks shutdown capability-unsuitable for duty-cycled systems; better for always-on precision metrology. | Select when highest accuracy and lowest tempco are required, and shutdown is unnecessary. |
| ADR3430ARJZ-R7 | 3.0V output, ±0.1% initial accuracy, 10ppm/°C tempco, 4.5µA quiescent current, no shutdown, SC70-5 package. | Higher accuracy and lower tempco, but no shutdown and larger quiescent current-less suitable for battery longevity. | Choose for lab-grade instrumentation where ultra-low drift outweighs power constraints. |
Compared with MAX6037CAUK30-T, MAX6035AAUT30+T trades shutdown and ultra-low IQ for tighter accuracy, while ADR3430ARJZ-R7 offers superior stability at the cost of 70× higher active current-making MAX6037CAUK30-T optimal for automotive and portable designs balancing precision, power, and feature set.
Availability
MAX6037CAUK30-T is available at Aetrix Electronics and suitable for portable medical devices, automotive TPMS modules, and industrial wireless sensor nodes requiring stable component supply with automotive-grade reliability and traceable sourcing.
Supply support for MAX6037CAUK30-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 demanding industrial, automotive, and medical applications.
The MAX6037 family delivers micropower, low-drift voltage references with shutdown-engineered specifically for battery-operated and automotive systems needing high accuracy across wide temperature ranges.
FAQ
What is the guaranteed operating temperature range for MAX6037CAUK30-T?
The MAX6037CAUK30-T is fully specified and tested over –40°C to +125°C, meeting automotive-grade requirements. All electrical parameters-including output voltage, tempco, and quiescent current-are guaranteed across this range per the datasheet's Absolute Maximum Ratings and Electrical Characteristics tables.
Does MAX6037CAUK30-T require an external output capacitor, and what value is recommended?
Yes, MAX6037CAUK30-T requires an output capacitor between OUT and GND for stability. The datasheet specifies a safe range of 0.02µF to 1µF-ceramic capacitors (e.g., 0.1µF X7R 0402) are recommended for minimal ESR and reliable transient response in portable applications.
How does the shutdown functionality of MAX6037CAUK30-T behave electrically?
When SHDN is pulled low (≤0.8V), MAX6037CAUK30-T disables its reference core, reducing supply current to ≤500nA and raising output impedance to >300kΩ. The output floats near 0V but is not actively driven-external pull-down may be needed if bus contention is a concern.
Can MAX6037CAUK30-T drive a 5mA load while maintaining regulation?
Yes, MAX6037CAUK30-T is rated to source and sink up to ±5mA while maintaining output regulation within spec. At 5mA sourcing, dropout remains ≤410mV (tested at VOUT = 5V), and for 3.0V output, typical dropout is ≤100mV at 1mA-well within safe margins for most 3.3V rail applications.
What is the meaning of the 'C' grade in MAX6037CAUK30-T?
The 'C' in MAX6037CAUK30-T denotes Grade C accuracy: ±0.5% initial output voltage tolerance at +25°C and 50ppm/°C maximum temperature coefficient. This balances cost and performance for industrial and automotive applications where Grade A (±0.2%, 25ppm/°C) is unnecessary.
MAX6037CAUK30-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- SC-74A, SOT-753
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 3V
- Voltage - Output (Max):
- -
- Current - Output:
- 5 mA
- Tolerance:
- ±0.5%
- Temperature Coefficient:
- 50ppm/°C
- Noise - 0.1Hz to 10Hz:
- 17µVp-p
- Noise - 10Hz to 10kHz:
- 40µVrms
- Voltage - Input:
- 3.2V ~ 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
MAX6037CAUK30-T FAQ
1.How can I place an order for MAX6037CAUK30-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6037CAUK30-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 MAX6037CAUK30-T reliable?
The price and inventory of MAX6037CAUK30-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6037CAUK30-T is usually 5 days.
3.What payment methods are accepted for MAX6037CAUK30-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6037CAUK30-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6037CAUK30-T?
MAX6037CAUK30-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6037CAUK30-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 MAX6037CAUK30-T?
For technical support, including MAX6037CAUK30-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6037CAUK30-T requirements.
6.How does Aetrix verify that MAX6037CAUK30-T is sourced from the original manufacturer or authorized distributors?
All MAX6037CAUK30-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 MAX6037CAUK30-T meets industry standards.
7.What is the process for return or replacement of MAX6037CAUK30-T?
All MAX6037CAUK30-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6037CAUK30-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 MAX6037CAUK30-T part is unused and in its original packaging.
Return procedure for MAX6037CAUK30-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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