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Analog Devices Inc./Maxim Integrated MAX38902DANT33+T
- Part No.:
- MAX38902DANT33+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 6-XFBGA, WLBGA
- Datasheet:
-
MAX38902DANT33+T.pdf
- Description:
- IC REG
- Quantity:
- Payment:
- Shipping:
Inventory:3,409
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Product details
Overview
MAX38902DANT33+T from Analog Devices is a factory-programmed, low-noise 3.3V LDO linear regulator delivering up to 500mA output current with 10.5µVRMS noise (10Hz–100kHz), ±1% DC accuracy over load/line/temperature, and only 100mV dropout at full load (3.6VIN). It operates from 1.7V to 5.5V input and integrates active discharge (800Ω), programmable soft-start, and overcurrent/thermal protection - ideal for powering noise-sensitive analog circuitry in high-resolution data acquisition systems.
For engineers reviewing the MAX38902DANT33+T datasheet, MAX38902DANT33+T pinout, MAX38902DANT33+T application, or MAX38902DANT33+T equivalent, key selection criteria include its fixed 3.3V output, WLP package footprint, 2µF minimum output capacitance requirement, and absence of POK or pin-selectable voltage options - distinguishing it from MAX38902A/B/C variants.
Technical Context
The MAX38902DANT33+T implements a pMOS-based LDO architecture with internal 0.6V reference and feedback amplifier, enabling stable regulation with minimal headroom. Its factory-trimmed 3.3V output eliminates external resistors and avoids FB/POK pins found on B/C versions.
It features an active-discharge path (800Ω) tied to EN, programmable soft-start via BYP capacitor (0.001–0.1µF), and reverse-current protection triggered when VIN drops 10mV below VOUT. Thermal shutdown activates at +165°C and recovers at +150°C, cycling under sustained overload.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3V (factory-trimmed, no external adjustment required) |
| Max Output Current | 500mA - supports moderate-power analog rails without thermal derating on 4-layer PCB |
| Output Noise | 10.5µVRMS (10Hz–100kHz) - enables clean supply for ADCs, DACs, and precision amplifiers |
| Dropout Voltage | 100mV max at 500mA (3.6VIN) - allows operation down to 3.4V input while maintaining regulation |
| Supply Current | 365µA typical (no-load, independent of dropout) - minimizes quiescent power in always-on subsystems |
| PSRR | 70dB at 10kHz - suppresses switching noise from upstream DC/DC converters |
| Accuracy | ±1% over load, line, and temperature (−40°C to +125°C) - ensures consistent biasing across environmental extremes |
| Shutdown Current | <0.1µA - enables deep-sleep modes in battery-powered instrumentation |
Pinout & Package
MAX38902DANT33+T uses a 2 × 3, 0.4mm-pitch wafer-level package (WLP), measuring 1.22mm × 0.82mm. The exposed bump array provides low thermal resistance (θJA = 95.1°C/W on 4-layer board) and requires solder-mask-defined pads per land pattern AN1891.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (A1) | IN | Input supply (1.7V–5.5V); bypass with 4.7µF ceramic capacitor to GND |
| 2 (A2) | GND | Regulator ground; tie all bypass capacitor grounds here for optimal PSRR and noise performance |
| 3 (A3) | EN | Active-high enable; pulling low discharges OUT via 800Ω resistor and disables regulation |
| 4 (B1) | IN | Redundant input connection - electrically tied to Pin 1; improves current sharing and thermal distribution |
| 5 (B2) | OUT | Regulated 3.3V output; requires ≥2µF low-ESR ceramic capacitor to GND for stability |
| 6 (B3) | OUTS | Output sense terminal; connect directly to load point to compensate for PCB trace IR drop |
| BYP | Bypass | Connect 0.01µF capacitor to OUT to set soft-start slew rate (5V/ms) and reduce reference noise |
Key Features
| Feature | Design Value |
|---|---|
| Factory-Programmed 3.3V Output | Eliminates external feedback resistors and layout complexity; guarantees tight tolerance without calibration |
| Active Discharge (800Ω) | Drains output capacitance rapidly upon disable, simplifying multi-rail power sequencing in FPGA or DSP systems |
| Programmable Soft-Start | Adjustable startup slew rate (via BYP capacitor) prevents inrush current and avoids brownout in shared input rails |
| Reverse-Current Protection | Blocks >200mA reverse current when VOUT > VIN, protecting upstream sources during power-down transients |
| Overcurrent & Thermal Protection | Current-limit (700mA typ) and thermal shutdown (+165°C trip) prevent damage during short-circuit or overload events |
Applications
| Communication Circuitry | Audio Systems |
|---|---|
Use Scenario: Powering RF transceiver analog front-end (LNA, mixer, PLL VCO bias) in 5G small-cell base stations. IC Role / Device Role / Timing Role: Low-noise 3.3V supply rail for sensitive RF signal chain components requiring minimal phase noise contribution. Use Value: 10.5µVRMS noise and 70dB PSRR at 10kHz suppress switching artifacts from adjacent DC/DC converters, preserving EVM and ACLR performance. |
Use Scenario: Supplying high-fidelity DAC and headphone amplifier stages in portable audio codecs. IC Role / Device Role / Timing Role: Clean, stable 3.3V bias for audio signal processing ICs where supply ripple directly modulates THD+N. Use Value: ±1% accuracy and <100mV dropout ensure consistent dynamic range across battery discharge profiles (3.6V → 3.0V input). |
| High-Resolution Data Acquisition Systems | Industrial Sensor Signal Conditioning |
Use Scenario: Biasing 24-bit delta-sigma ADC reference buffers and PGA inputs in precision weigh-scale or medical ECG front-ends. IC Role / Device Role / Timing Role: Ultra-low-noise 3.3V rail for analog signal path components where supply-induced noise limits effective resolution. Use Value: 10.5µVRMS integrated noise contributes <0.5 LSB error in 24-bit, 5V full-scale systems - meeting ENOB >22.5 bit requirements. |
Use Scenario: Powering MEMS pressure sensor ASICs and analog front-end op-amps in harsh-environment industrial transmitters. IC Role / Device Role / Timing Role: Robust, thermally resilient 3.3V supply operating continuously at +105°C ambient with guaranteed ±1% accuracy. Use Value: Thermal shutdown recovery at +150°C and 95.1°C/W θJA enable reliable operation in sealed enclosures without forced airflow. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX38902CANT+ | Resistor-adjustable output (0.6V–5.3V); no POK; same WLP package and 3.3V capability via external divider | Requires two external resistors and layout space; lacks factory-trimmed accuracy and long-term drift stability of MAX38902DANT33+T | Select when flexible output voltage or future design reuse across multiple rails is needed - not for fixed 3.3V production optimization. |
| TPL7407LADGNR | 500mA, 3.3V fixed LDO in 8-pin MSOP; 25µVRMS noise; 200mV dropout; no active discharge or OUTS pin | Larger footprint (3mm × 3mm), higher noise, and no output sensing limit use in ultra-precision or space-constrained designs | Choose only if WLP assembly capability is unavailable and 10.5µVRMS noise is not critical - e.g., digital I/O rail support. |
Compared with MAX38902CANT+, MAX38902DANT33+T trades adjustability for tighter DC accuracy, lower noise, and simplified BOM; versus TPL7407LADGNR, it delivers half the output noise, 40% lower dropout, and output sensing - justifying WLP adoption in miniaturized, high-performance analog systems.
Availability
MAX38902DANT33+T is available at Aetrix Electronics and suitable for communication circuitry, audio systems, and high-resolution data acquisition systems requiring stable component supply, guaranteed factory-trimmed 3.3V output, and ultra-low-noise regulation in space-constrained layouts.
Supply support for MAX38902DANT33+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
Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The MAX38902 family targets noise-critical power management in precision analog systems, with the D variant optimized for fixed-voltage, zero-resistor, high-volume deployment in compact portable and instrumentation platforms.
FAQ
What is the output voltage tolerance of MAX38902DANT33+T over temperature and load?
The MAX38902DANT33+T maintains ±1% DC output accuracy across −40°C to +125°C junction temperature, full 0.1mA–500mA load range, and input voltages from VOUT + 0.3V to 5.5V. This specification is guaranteed by design and characterization, with production testing performed at +25°C.
Does MAX38902DANT33+T require an external feedback resistor network?
No. MAX38902DANT33+T is factory-programmed to 3.3V and contains no FB pin. Unlike MAX38902B/C, it eliminates external resistors, reducing BOM count, layout area, and potential drift errors - making it ideal for cost- and space-sensitive production designs.
Can MAX38902DANT33+T be used with ceramic output capacitors smaller than 4.7µF?
Yes. MAX38902DANT33+T is stable with a minimum 2µF ceramic output capacitor (including voltage and temperature derating). A 4.7µF X5R/X7R part is recommended for margin, but 2.2µF or 3.3µF devices meeting ESR < 0.03Ω are acceptable per the datasheet's stability criteria.
What is the purpose of the OUTS pin on MAX38902DANT33+T?
The OUTS pin on MAX38902DANT33+T provides Kelvin sensing of the regulated output voltage at the load. Connecting OUTS directly to the load point compensates for voltage drop across PCB traces or connectors, ensuring ±1% accuracy is maintained at the point-of-load - critical for precision analog circuits.
Is MAX38902DANT33+T pin-compatible with other MAX38902 variants?
No. MAX38902DANT33+T uses a 6-bump WLP (2×3, 0.4mm pitch), while MAX38902A/B use an 8-pin TDFN. Pin functions also differ: MAX38902DANT33+T has OUTS instead of FB or POK, and lacks SELA/SELB. Board redesign is required for substitution.
MAX38902DANT33+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 6-XFBGA, WLBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.3V @ 500mA
- Current - Output:
- 0.5A
- Current - Quiescent (Iq):
- 600 µA
- Current - Supply (Max):
- -
- PSRR:
- 70dB ~ 40dB (1kHz ~ 1MHz)
- Control Features:
- Current Limit, Enable, Soft Start
- Protection Features:
- Over Current, Over Temperature, Short Circuit, Under Voltage Lockout (UVLO)
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-WLP (1.22x0.82)
MAX38902DANT33+T FAQ
1.How can I place an order for MAX38902DANT33+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX38902DANT33+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 MAX38902DANT33+T reliable?
The price and inventory of MAX38902DANT33+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX38902DANT33+T is usually 5 days.
3.What payment methods are accepted for MAX38902DANT33+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX38902DANT33+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX38902DANT33+T?
MAX38902DANT33+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX38902DANT33+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 MAX38902DANT33+T?
For technical support, including MAX38902DANT33+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX38902DANT33+T requirements.
6.How does Aetrix verify that MAX38902DANT33+T is sourced from the original manufacturer or authorized distributors?
All MAX38902DANT33+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 MAX38902DANT33+T meets industry standards.
7.What is the process for return or replacement of MAX38902DANT33+T?
All MAX38902DANT33+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX38902DANT33+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 MAX38902DANT33+T part is unused and in its original packaging.
Return procedure for MAX38902DANT33+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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