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Analog Devices Inc./Maxim Integrated MAX38902DANT33+
- Part No.:
- MAX38902DANT33+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 6-XFBGA, WLBGA
- Datasheet:
-
MAX38902DANT33+.pdf
- Description:
- 500MA LOW NOISE LDO LINEAR REGUL
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MAX38902DANT33+ 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 max dropout at full load (3.6VIN). It operates from 1.7V to 5.5V input, features active discharge (800Ω), programmable soft-start, and thermal/overcurrent protection - deployed in high-resolution data acquisition and audio systems where clean, stable 3.3V rail integrity is critical.
For engineers reviewing the MAX38902DANT33+ datasheet, MAX38902DANT33+ pinout, MAX38902DANT33+ application, or MAX38902DANT33+ equivalent, key selection criteria include its WLP package footprint, factory-set 3.3V output (no external resistors or select pins required), ultra-low noise performance, and compatibility with 2µF minimum ceramic output capacitance in space-constrained, thermally sensitive designs.
Technical Context
The MAX38902DANT33+ implements a pMOS-based LDO architecture with internal voltage reference (0.6V feedback threshold), precision error amplifier, and thermal shutdown circuitry triggered at +165°C (re-enabling at +150°C). Its fixed 3.3V output is trimmed at wafer level and does not rely on external feedback or pin-select configuration.
It integrates reverse-current protection that disables conduction when VIN falls 10mV below VOUT, and an active discharge path (800Ω) tied to EN logic - enabling rapid output capacitor discharge during disable. The BYP pin controls soft-start slew rate via external capacitor (0.001–0.1µF), directly setting startup transient behavior without altering regulation accuracy.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Factory-trimmed 3.3V ±1% - eliminates need for external resistor divider or configuration pins; ensures consistent rail across production units. |
| Max Output Current | 500mA - supports moderate-power digital ICs, ADCs, and RF front-ends without external pass devices. |
| Output Noise | 10.5µVRMS (10Hz–100kHz) - enables use in noise-sensitive analog signal chains, such as SAR ADC reference supplies or audio DAC bias rails. |
| Dropout Voltage | ≤100mV at 500mA (3.6VIN) - allows operation with minimal headroom, extending battery life in portable 3.3V systems. |
| PSRR | 70dB at 10kHz - suppresses switching noise from upstream DC/DC converters feeding the LDO input. |
| Supply Current | 365µA no-load - independent of dropout voltage, enabling predictable quiescent power in always-on subsystems. |
| Shutdown Current | <0.1µA - reduces system standby power to negligible levels during deep sleep modes. |
| Stable Output Capacitance | 2µF minimum (ceramic, X5R/X7R) - permits compact, low-ESR capacitor selection without stability risk. |
Pinout & Package
MAX38902DANT33+ uses a 2 × 3 wafer-level package (WLP), 0.4mm pitch, 1.22mm × 0.82mm footprint, with solder bumps on bottom side - optimized for ultra-compact PCB layouts and high-density routing. Thermal performance relies on proper bump-to-PCB interconnect and ground plane coupling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (A1) | IN | Input supply (1.7V–5.5V); requires 4.7µF ceramic bypass to GND near pin for EMI suppression and transient response. |
| 2 (A2) | GND | Regulator ground reference; must connect IN/OUT capacitor grounds here to minimize ground bounce and improve PSRR. |
| 3 (A3) | EN | Active-high enable; pulling low disables output and activates 800Ω active discharge to GND for fast rail collapse. |
| 4 (B1) | OUT | Regulated 3.3V output (500mA max); requires ≥2µF low-ESR ceramic capacitor to GND for stability and noise filtering. |
| 5 (B2) | BYP | Bypass node for noise reduction and soft-start control; connects to OUT via 0.001–0.1µF capacitor to set startup slew rate. |
| 6 (B3) | OUTS | Output sense terminal; connects directly to load point to compensate for PCB trace IR drop and maintain ±1% accuracy at point-of-load. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-Programmed 3.3V Output | Eliminates external feedback resistors and configuration pins - reduces BOM count, layout area, and calibration uncertainty. |
| Active Discharge (800Ω) | Drives OUT to GND within milliseconds upon EN deactivation - simplifies power sequencing and prevents backfeeding in multi-rail systems. |
| Programmable Soft-Start | Startup slew rate controlled by BYP–OUT capacitor value (e.g., 0.01µF = 5V/ms), limiting inrush current into downstream capacitive loads. |
| Reverse-Current Protection | Blocks conduction when VOUT > VIN by disabling pMOS pass device - prevents battery drain or bus contention during partial power-down. |
| Thermal & Overcurrent Protection | Auto-cycles output on junction temperature >165°C or short-circuit condition - ensures survivability under fault without external circuitry. |
| Ultra-Low Noise (10.5µVRMS) | Enables direct powering of precision analog components (e.g., 16-bit+ ADCs, low-phase-noise PLLs) without additional filtering stages. |
Applications
| High-Resolution Data Acquisition | Audio Signal Processing |
|---|---|
|
Use Scenario: Powering SAR ADC reference buffers and analog front-end op-amps in portable test equipment. IC Role / Device Role / Timing Role: Low-noise 3.3V supply for precision analog signal chain - maintains SNR and effective number of bits (ENOB). Use Value: 10.5µVRMS noise avoids adding measurable RMS error to sub-100µV LSB steps; ±1% accuracy ensures calibrated measurement repeatability. |
Use Scenario: Supplying DAC output stages and headphone amplifiers in battery-powered audio players. IC Role / Device Role / Timing Role: Clean, stable 3.3V rail for analog audio signal generation - minimizes audible hiss and distortion. Use Value: 70dB PSRR at 10kHz rejects noise from adjacent switching regulators; 365µA quiescent current extends playback time. |
| Low-Power IoT Sensor Nodes | Industrial Control I/O Modules |
|
Use Scenario: Providing regulated power to MEMS accelerometers, temperature sensors, and BLE SoCs in energy-harvesting nodes. IC Role / Device Role / Timing Role: Always-on LDO with ultra-low shutdown current (<0.1µA) and fast wake-up capability. Use Value: Enables multi-year battery life; 100mV dropout allows operation down to 3.4V input from aging coin cells or supercaps. |
Use Scenario: Delivering isolated 3.3V logic supply for microcontroller GPIOs and digital isolator side-rails in PLC modules. IC Role / Device Role / Timing Role: Robust, protected LDO tolerant of industrial transients and wide ambient temperature (-40°C to +125°C). Use Value: Thermal shutdown and overcurrent protection prevent field failures; WLP package supports conformal coating and compact module design. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX38902CANT+ | Same WLP package and 0.6V–5.3V resistor-adjustable output; lacks factory preset voltage - requires external R1/R2 divider. | Suitable when flexible output voltage tuning is needed post-design or across multiple variants sharing same PCB. | Select MAX38902CANT+ if output voltage may change during development or production; MAX38902DANT33+ is optimal for fixed 3.3V with zero component overhead. |
| TPL7407LPGEDR | TI 3.3V fixed-output LDO in 6-pin WSON (2mm × 2mm); 300mA rating, 25µVRMS noise, 200mV dropout at full load. | Lower current and higher noise limit use in less demanding digital-only rails; lacks OUTS sense pin and active discharge. | Choose TPL7407LPGEDR only for cost-sensitive, non-noise-critical 3.3V digital logic rails; MAX38902DANT33+ is superior for analog/mixed-signal integrity. |
Compared with MAX38902CANT+, MAX38902DANT33+ saves two resistors and layout area while guaranteeing tighter initial accuracy; versus TPL7407LPGEDR, it delivers 2× lower noise, 2× higher current, and critical features like active discharge and point-of-load sensing - justifying use in performance-driven analog systems.
Availability
MAX38902DANT33+ is available at Aetrix Electronics and suitable for high-resolution data acquisition systems, audio signal processing circuits, and low-power IoT sensor nodes requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for MAX38902DANT33+ 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 with precision power, sensing, and conversion solutions.
The MAX38902 family was designed specifically for noise-sensitive, space-constrained applications requiring ultra-low-noise, high-accuracy LDO regulation - targeting high-fidelity audio, precision instrumentation, and battery-operated edge devices.
FAQ
What is the output voltage tolerance of the MAX38902DANT33+ over temperature and load?
The MAX38902DANT33+ 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 for the factory-programmed 3.3V variant and verified per Electrical Characteristics table in the datasheet. No external trimming or calibration is required to meet this tolerance.
Does the MAX38902DANT33+ require an external feedback resistor network?
No, the MAX38902DANT33+ does not require any external feedback resistors. Its 3.3V output is factory-trimmed and permanently programmed - eliminating the need for R1/R2 dividers, configuration pins, or voltage-select jumpers. This simplifies layout, reduces BOM count, and improves production yield compared to adjustable LDOs like the MAX38902CANT+.
Can the MAX38902DANT33+ be used with ceramic output capacitors smaller than 4.7µF?
Yes, the MAX38902DANT33+ is stable with a minimum 2µF ceramic output capacitor (X5R/X7R dielectric), including voltage derating effects. While 4.7µF is recommended for optimal transient response and noise suppression, designs using 2.2µF or 3.3µF X5R ceramics meet stability requirements per the datasheet's COUT specification and typical operating circuits.
What is the purpose of the OUTS pin on the MAX38902DANT33+?
The OUTS (output sense) pin on the MAX38902DANT33+ provides remote voltage sensing at the load point, compensating for IR drop across PCB traces or connectors. When connected directly to the load's power input, it enables the regulator to maintain ±1% accuracy at the point-of-load - critical for precision analog circuits where even 20mV rail deviation impacts performance.
How does the active discharge feature work on the MAX38902DANT33+?
When the EN pin is pulled low, the MAX38902DANT33+ internally connects an 800Ω resistor between the OUT pin and GND. This actively discharges the output capacitor, collapsing the 3.3V rail rapidly - typically within tens of microseconds depending on COUT value. This feature eliminates reliance on external bleed resistors and ensures deterministic power-down sequencing in multi-voltage systems.
MAX38902DANT33+ 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+ FAQ
1.How can I place an order for MAX38902DANT33+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX38902DANT33+ 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+ reliable?
The price and inventory of MAX38902DANT33+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX38902DANT33+ is usually 5 days.
3.What payment methods are accepted for MAX38902DANT33+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX38902DANT33+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX38902DANT33+?
MAX38902DANT33+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX38902DANT33+ 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+?
For technical support, including MAX38902DANT33+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX38902DANT33+ requirements.
6.How does Aetrix verify that MAX38902DANT33+ is sourced from the original manufacturer or authorized distributors?
All MAX38902DANT33+ 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+ meets industry standards.
7.What is the process for return or replacement of MAX38902DANT33+?
All MAX38902DANT33+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX38902DANT33+, 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+ part is unused and in its original packaging.
Return procedure for MAX38902DANT33+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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