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Analog Devices Inc./Maxim Integrated MAX6037BAUK33-T
- Part No.:
- MAX6037BAUK33-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6037BAUK33-T.pdf
- Description:
- LOW-POWER, FIXED REFERENCE
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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Product details
Overview
MAX6037BAUK33-T from Maxim Integrated is a low-dropout, micropower voltage reference with fixed 3.3V output, ±0.3% initial accuracy, 50ppm/°C max temperature coefficient, 100mV max dropout at 1mA, and active-low shutdown consuming ≤500nA. It operates from 3.5V to 5.5V supply and delivers ±5mA load current, serving as a precision reference in battery-powered data acquisition systems.
For engineers reviewing the MAX6037BAUK33-T datasheet, MAX6037BAUK33-T pinout, MAX6037BAUK33-T application, or MAX6037BAUK33-T equivalent, key selection criteria include its automotive-grade -40°C to +125°C operation, SOT23-5 package compatibility, 0.02µF–1µF capacitive-load stability, and shutdown logic thresholds (VENL ≤ 0.8V, VENH ≥ 2.0V) for reliable low-power system control.
Technical Context
The MAX6037BAUK33-T is a series-mode bandgap voltage reference with internal trimming for fixed 3.3V output. Its shutdown circuitry disables the output stage when SHDN is pulled low, reducing quiescent current to ≤500nA while maintaining high-impedance output (ZOUT = 330kΩ).
It features a low-temperature-coefficient bandgap core (50ppm/°C max), supports sourcing/sinking up to ±5mA, and maintains output stability across 0.02µF–1µF output capacitance-enabling direct use with ADCs, DACs, and precision regulators without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.300V ±0.3% at +25°C - ensures stable reference for 12-bit ADCs requiring ≤10mV absolute error |
| Tempco | 50ppm/°C max - limits drift to ±6.6mV over -40°C to +125°C ambient range |
| Dropout Voltage | 100mV max at 1mA - enables operation from 3.4V supply in 3.3V systems |
| Quiescent Current | 275µA max - supports >1-year battery life in 10µA-average-power IoT sensors |
| Shutdown Current | 500nA max - reduces standby power by 550× vs active mode |
| Load Drive | ±5mA - directly interfaces with op-amp inputs, SAR ADC references, and digital potentiometers |
| Capacitive Load Range | 0.02µF to 1µF - compatible with ceramic decoupling caps without oscillation risk |
Pinout & Package
MAX6037BAUK33-T is housed in a 5-pin SOT23-5 package (U5-2 code), with exposed pad not electrically connected. The package measures 2.9mm × 1.6mm × 1.1mm and is rated for -40°C to +125°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (I.C.) | Internally Connected | No external connection required; reserved for internal biasing in fixed-output variants |
| 2 (GND) | Ground Reference | Primary return path for reference output and supply current; must be low-impedance |
| 3 (SHDN) | Active-Low Enable | Pull ≤0.8V to disable output; tie to IN for always-on operation |
| 4 (IN) | Supply Input | Accepts 3.5V–5.5V; requires 0.1µF bypass capacitor to GND for noise rejection |
| 5 (OUT) | Reference Output | 3.3V precision source; connect 0.02µF–1µF capacitor to GND for stability |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 3.3V Output | Eliminates external resistor network, reducing BOM count and layout area vs adjustable references |
| Automotive Temperature Range | Validated operation from -40°C to +125°C enables use in under-hood and industrial control modules |
| Low Dropout (100mV) | Permits regulation from single-cell Li-ion (3.4V min) or 3.3V rail with margin |
| Shutdown Mode | Reduces system standby current to sub-µA level, critical for energy-harvesting and battery-backed designs |
| Capacitive-Load Stability | Stable with standard 0.1µF X7R ceramics-no ESR requirements or compensation needed |
Applications
| Portable Medical Sensors | Wireless Sensor Nodes |
|---|---|
Use Scenario: Battery-powered ECG front-end with 16-bit SAR ADC sampling at 1kSPS. IC Role / Device Role / Timing Role: Provides stable 3.3V reference for ADC full-scale calibration and offset correction. Use Value: ±0.3% initial accuracy and 50ppm/°C tempco ensure <0.5 LSB error over medical operating temperature range. | Use Scenario: LoRaWAN node measuring temperature/humidity with ultra-low duty cycle. IC Role / Device Role / Timing Role: Supplies reference voltage to analog sensor signal chain during brief active periods. Use Value: 500nA shutdown current extends 2xAA battery life beyond 10 years in sleep-dominated operation. |
| Precision Industrial Regulators | Automotive Body Control Modules |
Use Scenario: Programmable 3.3V LDO feedback reference in factory automation PLC I/O module. IC Role / Device Role / Timing Role: Sets precise output voltage for isolated DC-DC converter secondary-side regulation. Use Value: 100mV dropout allows regulation from 3.4V input, maximizing efficiency in 3.3V distributed power architecture. | Use Scenario: Cabin temperature sensor interface in HVAC control unit operating across engine bay temperatures. IC Role / Device Role / Timing Role: Supplies reference to thermistor measurement circuit and microcontroller ADC. Use Value: -40°C to +125°C qualification and 50ppm/°C tempco guarantee consistent sensor linearity in extreme thermal environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR3433ARJZ-R7 | ±0.1% initial accuracy, 30ppm/°C tempco, 125µA quiescent current, no shutdown | Lacks shutdown function; higher accuracy but higher supply current | Select when highest DC precision is required and system-level power gating replaces device shutdown |
| REF3333AIDBVR | ±0.1% initial accuracy, 10ppm/°C tempco, 4.5µA quiescent current, no shutdown | No shutdown; significantly higher quiescent current than MAX6037BAUK33-T in active mode | Choose for ultra-low-drift applications where long-term stability outweighs shutdown capability |
Compared with ADR3433ARJZ-R7 and REF3333AIDBVR, the MAX6037BAUK33-T trades minor accuracy degradation for 500nA shutdown current and 275µA active-mode consumption-making it optimal for intermittently powered systems where standby power dominates lifetime energy budget.
Availability
MAX6037BAUK33-T is available at Aetrix Electronics and suitable for portable medical sensors, wireless sensor nodes, and precision industrial regulators requiring stable component supply across extended production lifecycles.
Supply support for MAX6037BAUK33-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 low-power, high-accuracy voltage references with shutdown for battery-constrained systems requiring guaranteed performance across automotive temperature ranges.
FAQ
What is the maximum input voltage for MAX6037BAUK33-T?
The MAX6037BAUK33-T supports a supply voltage range of 3.5V to 5.5V. This is specified in the electrical characteristics table for the 3.3V output variant (MAX6037_33), where VIN minimum is defined as VOUT + 0.2V = 3.5V. Exceeding 5.5V violates absolute maximum ratings and may cause permanent damage to the MAX6037BAUK33-T.
Does MAX6037BAUK33-T require an output capacitor?
Yes, the MAX6037BAUK33-T requires an output capacitor between OUT and GND for stability, with a recommended range of 0.02µF to 1µF. Ceramic capacitors are suitable, and no minimum ESR is required. Omitting the capacitor risks oscillation or degraded transient response in the MAX6037BAUK33-T output.
What is the logic threshold for enabling MAX6037BAUK33-T shutdown?
The MAX6037BAUK33-T uses an active-low SHDN pin with logic-low threshold (VENL) ≤ 0.8V and logic-high threshold (VENH) ≥ 2.0V when VIN is 3.5V–5.5V. Pulling SHDN below 0.8V disables the output and reduces supply current to ≤500nA; tying SHDN to IN enables continuous operation of the MAX6037BAUK33-T.
Can MAX6037BAUK33-T drive a 5mA load in both sourcing and sinking modes?
Yes, the MAX6037BAUK33-T is specified to source and sink up to ±5mA while maintaining output regulation within datasheet limits. Load regulation is characterized across this range, with worst-case deviation of 0.212%/mA in sinking mode. This capability allows the MAX6037BAUK33-T to directly drive op-amp inputs, ADC references, and digital potentiometer wipers without buffering.
Is MAX6037BAUK33-T qualified for automotive applications?
Yes, the MAX6037BAUK33-T is fully specified and tested over the -40°C to +125°C automotive temperature range. Its 50ppm/°C max temperature coefficient, 1000-hour long-term stability (133ppm), and thermal hysteresis (514ppm) meet AEC-Q100 stress test requirements for non-automotive-qualified components used in automotive subsystems such as body control and cabin sensing.
MAX6037BAUK33-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):
- 3.3V
- Voltage - Output (Max):
- -
- Current - Output:
- 5 mA
- Tolerance:
- ±0.3%
- Temperature Coefficient:
- 50ppm/°C
- Noise - 0.1Hz to 10Hz:
- 19µVp-p
- Noise - 10Hz to 10kHz:
- 45µVrms
- Voltage - Input:
- 3.5V ~ 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
MAX6037BAUK33-T FAQ
1.How can I place an order for MAX6037BAUK33-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6037BAUK33-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 MAX6037BAUK33-T reliable?
The price and inventory of MAX6037BAUK33-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6037BAUK33-T is usually 5 days.
3.What payment methods are accepted for MAX6037BAUK33-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6037BAUK33-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6037BAUK33-T?
MAX6037BAUK33-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6037BAUK33-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 MAX6037BAUK33-T?
For technical support, including MAX6037BAUK33-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6037BAUK33-T requirements.
6.How does Aetrix verify that MAX6037BAUK33-T is sourced from the original manufacturer or authorized distributors?
All MAX6037BAUK33-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 MAX6037BAUK33-T meets industry standards.
7.What is the process for return or replacement of MAX6037BAUK33-T?
All MAX6037BAUK33-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6037BAUK33-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 MAX6037BAUK33-T part is unused and in its original packaging.
Return procedure for MAX6037BAUK33-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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