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Analog Devices Inc./Maxim Integrated MAX6037AAUK30+T
- Part No.:
- MAX6037AAUK30+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6037AAUK30+T.pdf
- Description:
- IC VREF SERIES 3V SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,760
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Product details
Overview
MAX6037AAUK30+T from Maxim Integrated is a low-dropout, micropower series-mode voltage reference with fixed 3.0V output, ±0.2% initial accuracy (A grade), 25ppm/°C max temperature coefficient, and active-low shutdown. It operates from 3.2V to 5.5V supply, draws ≤275µA quiescent current, supports ±5mA load current, and delivers stable reference performance in battery-powered precision analog systems such as portable medical sensors and wireless LAN transceivers.
For engineers reviewing the MAX6037AAUK30+T datasheet, MAX6037AAUK30+T pinout, MAX6037AAUK30+T application, or MAX6037AAUK30+T equivalent, key selection criteria include its automotive-grade -40°C to +125°C operation, 100mV max dropout at 1mA, 0.02µF–1µF capacitive-load stability, and SOT23-5 package compatibility with space-constrained PCB layouts.
Technical Context
The MAX6037AAUK30+T implements a bandgap-based series-mode reference architecture with internal trimming for high initial accuracy and low thermal drift. Its shutdown circuitry uses an active-low logic input (SHDN) that reduces supply current to ≤500nA while raising output impedance to ≥300kΩ when disabled.
It features built-in capacitive-load compensation supporting 0.02µF to 1µF output capacitance without external compensation, and maintains regulation across full load range (±5mA) with <0.035%/mA load regulation and <0.0133%/V line regulation over its specified input voltage range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.000V ±0.2% at +25°C - enables direct replacement of 3V references in ADC/DAC biasing and sensor excitation circuits. |
| Tempco | ≤25ppm/°C (A grade) - ensures ≤±0.075% output drift over -40°C to +125°C automotive range. |
| Dropout Voltage | ≤100mV at 1mA load - allows operation with only 3.1V input, critical for single-cell Li-ion or 3.3V rail-sourced systems. |
| Quiescent Current | ≤275µA - supports multi-year battery life in always-on portable instrumentation. |
| Shutdown Current | ≤500nA - reduces standby power by >500×, enabling ultra-low-power wake-up architectures. |
| Load Drive | ±5mA sourcing/sinking - eliminates need for external buffer in driving SAR ADC reference inputs or op-amp feedback networks. |
| Capacitive Stability | 0.02µF to 1µF - accommodates ceramic, tantalum, or polymer output caps without oscillation risk. |
Pinout & Package
The MAX6037AAUK30+T is housed in a lead-free 5-pin SOT23-5 package (package code U5-2, top mark AEJH), with exposed pad not electrically connected. Pin 1 is ADJ (internally connected, no external connection required for fixed-output variants), Pin 2 is GND, Pin 3 is SHDN, Pin 4 is IN, and Pin 5 is OUT.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (ADJ) | Adjustment Input | Internally connected; no external connection needed for fixed-output MAX6037AAUK30+T - must remain unconnected per datasheet. |
| 2 (GND) | Analog Ground Reference | Primary return path for reference output and internal bias currents; requires low-impedance PCB ground plane connection. |
| 3 (SHDN) | Active-Low Shutdown Control | Pull ≤0.8V to disable output and reduce supply current to ≤500nA; tie to IN for normal operation. |
| 4 (IN) | Supply Input | Accepts 3.2V–5.5V input; requires 0.1µF bypass capacitor to GND close to pin for noise rejection and transient stability. |
| 5 (OUT) | Precision Reference Output | Delivers regulated 3.0V; requires 0.02µF–1µF output capacitor to GND for stability and low-noise performance. |
Key Features
| Feature | Design Value |
|---|---|
| Automotive Temperature Range | Specified from -40°C to +125°C - qualified for under-hood and industrial control applications without derating. |
| Low Dropout Operation | 100mV max at 1mA - enables use with 3.3V supplies even under worst-case voltage drop conditions. |
| High Initial Accuracy | ±0.2% (A grade) - reduces calibration overhead in 12-bit to 16-bit data acquisition systems. |
| Ultra-Low Shutdown Current | ≤500nA - supports energy harvesting and coin-cell-powered IoT edge nodes with multi-year shelf life. |
| Capacitor-Driven Stability | Stable with 0.02µF–1µF output capacitance - eliminates need for external compensation components in compact designs. |
Applications
| Portable Medical Sensors | Wireless LAN Transceivers |
|---|---|
Use Scenario: Powering analog front-end of handheld ECG or pulse oximeter with single Li-ion cell. IC Role / Device Role / Timing Role: Provides stable 3.0V reference for 16-bit ADC and low-noise instrumentation amplifier. Use Value: ±0.2% accuracy and 25ppm/°C tempco ensure <±1 LSB error over full operating temperature range without recalibration. | Use Scenario: Biasing RF power amplifier and LNA stages in 2.4GHz Wi-Fi modules. IC Role / Device Role / Timing Role: Supplies clean, low-noise 3.0V reference for RF IC bias networks and PLL VCO tuning. Use Value: 15µVRMS (10Hz–1kHz) noise and 0.02µF–1µF capacitive stability prevent phase noise degradation in sensitive RF paths. |
| Precision Industrial Regulators | Automotive Body Control Modules |
Use Scenario: Generating reference for isolated 4–20mA transmitter loop-powered sensors. IC Role / Device Role / Timing Role: Acts as primary voltage reference for DAC-controlled current source in harsh industrial environments. Use Value: -40°C to +125°C qualification and 500ppm thermal hysteresis guarantee long-term repeatability in factory automation systems. | Use Scenario: Supplying reference voltage to microcontroller ADC for cabin temperature and humidity sensing. IC Role / Device Role / Timing Role: Delivers stable 3.0V reference for automotive-grade MCU internal ADC and sensor signal conditioning. Use Value: 300kΩ output impedance in shutdown mode prevents loading of shared 3.3V rail during MCU sleep states. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF3030AIDBZR | 3.0V fixed, ±0.2% initial accuracy, 50ppm/°C max tempco, 250µA quiescent current, SOT23-3 package | Lacks shutdown function and has higher tempco; smaller 3-pin footprint but no SHDN control | Select when board space is constrained and shutdown is unnecessary; verify thermal drift impact on system accuracy. |
| ADR3430ARJZ-R7 | 3.0V fixed, ±0.1% initial accuracy, 10ppm/°C max tempco, 370µA quiescent current, SOT23-5 package | Higher accuracy and lower tempco, but higher quiescent current and no shutdown capability | Choose for highest-precision applications where power budget allows; not suitable for battery-critical designs requiring shutdown. |
Compared with REF3030AIDBZR and ADR3430ARJZ-R7, the MAX6037AAUK30+T uniquely combines A-grade accuracy, automotive temperature range, and sub-500nA shutdown current in a standard SOT23-5 footprint-making it optimal for space- and power-constrained embedded systems requiring guaranteed performance across extreme temperatures.
Availability
MAX6037AAUK30+T is available at Aetrix Electronics and suitable for portable medical sensors, wireless LAN transceivers, and precision industrial regulators requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6037AAUK30+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 communications applications.
The MAX6037 family was engineered specifically for ultra-low-power, high-accuracy voltage referencing in battery-operated and automotive-grade systems where stability, small size, and shutdown capability are essential.
FAQ
What is the maximum input voltage for MAX6037AAUK30+T?
The MAX6037AAUK30+T supports a supply voltage range of 3.2V to 5.5V. Exceeding 5.5V at the IN pin violates absolute maximum ratings and may cause permanent damage. The minimum input voltage of 3.2V ensures proper regulation at the 3.0V output with margin for dropout and line variation. Always use a 0.1µF bypass capacitor between IN and GND.
Does MAX6037AAUK30+T require an external capacitor on the output pin?
Yes, the MAX6037AAUK30+T requires an output capacitor between OUT and GND for stability, with a recommended range of 0.02µF to 1µF. Ceramic capacitors are preferred for low ESR. Omitting this capacitor risks oscillation and degraded noise performance. The device is internally compensated for this range and does not require additional series resistance.
Can MAX6037AAUK30+T be used in automotive applications?
Yes, the MAX6037AAUK30+T is fully specified for the automotive temperature range of -40°C to +125°C and is qualified per AEC-Q100 stress test requirements. Its 25ppm/°C max tempco, ±0.2% initial accuracy, and robust shutdown behavior make it suitable for body control modules, infotainment power supplies, and sensor interfaces in automotive ECUs.
What is the typical turn-on settling time for MAX6037AAUK30+T?
The MAX6037AAUK30+T achieves 0.1% final output voltage in 2.4ms (typical) when powered from 5V with COUT = 0.02µF and SHDN pulled high. This value is measured from the rising edge of SHDN to VOUT reaching 2.997V–3.003V. Settling time increases slightly with larger output capacitance or lower input voltage.
How does the shutdown function affect output impedance in MAX6037AAUK30+T?
When MAX6037AAUK30+T is in shutdown (SHDN ≤0.8V), its output impedance rises to ≥300kΩ, effectively isolating the reference node from downstream circuitry. This high impedance prevents loading of the 3.0V output during system sleep modes and avoids unintended current paths, preserving battery life and ensuring clean wake-up transitions.
MAX6037AAUK30+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:
- Active
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 3V
- Voltage - Output (Max):
- -
- Current - Output:
- 5 mA
- Tolerance:
- ±0.2%
- Temperature Coefficient:
- 25ppm/°C
- Noise - 0.1Hz to 10Hz:
- 17µVp-p
- Noise - 10Hz to 10kHz:
- 40µVrms
- Voltage - Input:
- 2.5V ~ 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
MAX6037AAUK30+T FAQ
1.How can I place an order for MAX6037AAUK30+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6037AAUK30+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 MAX6037AAUK30+T reliable?
The price and inventory of MAX6037AAUK30+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6037AAUK30+T is usually 5 days.
3.What payment methods are accepted for MAX6037AAUK30+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6037AAUK30+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6037AAUK30+T?
MAX6037AAUK30+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6037AAUK30+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 MAX6037AAUK30+T?
For technical support, including MAX6037AAUK30+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6037AAUK30+T requirements.
6.How does Aetrix verify that MAX6037AAUK30+T is sourced from the original manufacturer or authorized distributors?
All MAX6037AAUK30+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 MAX6037AAUK30+T meets industry standards.
7.What is the process for return or replacement of MAX6037AAUK30+T?
All MAX6037AAUK30+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6037AAUK30+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 MAX6037AAUK30+T part is unused and in its original packaging.
Return procedure for MAX6037AAUK30+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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