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Analog Devices Inc./Maxim Integrated MAX38904DANL50+T
- Part No.:
- MAX38904DANL50+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 15-XFBGA, WLBGA
- Datasheet:
-
MAX38904DANL50+T.pdf
- Description:
- IC REG 2A
- Quantity:
- Payment:
- Shipping:
Inventory:2,522
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Product details
Overview
MAX38904DANL50+T from Analog Devices is a 2A, low-noise LDO linear regulator in a 5×3 bump WLP (2.2mm × 1.37mm, 0.4mm pitch), factory-programmed to 5.0V output with ±1% DC accuracy over load, line, and temperature. It operates from 1.7V–5.5V input, achieves 100mV max dropout at 2A, and delivers only 5.1μVRMS output noise (10Hz–100kHz) - ideal for powering high-resolution ADCs and precision analog front-ends in medical instrumentation.
For engineers reviewing the MAX38904DANL50+T datasheet, MAX38904DANL50+T pinout, MAX38904DANL50+T application, or MAX38904DANL50+T equivalent, this page provides verified package mapping, confirmed WLP pin functions, factory-set 5.0V regulation behavior, active discharge (70Ω), soft-start programmability via BYP capacitor, and real-world thermal performance data for PCB layout and system power sequencing.
Technical Context
The MAX38904DANL50+T implements a PMOS-based LDO architecture with internal 0.6V reference and feedback loop optimized for ultra-low noise and high PSRR (>70dB at 10kHz). Its factory-programmed 5.0V output eliminates external resistor networks, reducing BOM count and layout sensitivity while maintaining full protection features including overcurrent, thermal shutdown (165°C trip), and reverse-current blocking.
Unlike adjustable variants (B/C), the MAX38904DANL50+T uses dedicated OUTS pin for remote voltage sensing and integrates active discharge on EN deactivation - critical for controlled power-down in multi-rail systems. The 5×3 WLP package requires precise land pattern adherence per AN1891 and mandates thermal vias under the exposed die pad for reliable 125°C operation at full 2A load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Factory-set 5.0V ±1% - eliminates need for external feedback resistors and associated layout errors. |
| Max Output Current | 2A continuous - supports high-current analog subsystems without external current boosting. |
| Input Voltage Range | 1.7V to 5.5V - enables direct regulation from Li-ion batteries (3.0–4.2V) or intermediate rails (3.3V/5V). |
| Dropout Voltage | ≤100mV at 2A - ensures stable 5.0V output even when input drops to 5.1V, critical for brownout resilience. |
| Output Noise | 5.1μVRMS (10Hz–100kHz) - meets stringent noise requirements for 16-bit+ data acquisition and RF biasing. |
| PSRR | >70dB at 10kHz - suppresses switching noise from upstream DC/DC converters feeding the LDO input. |
| Active Discharge | 70Ω pull-down on OUT during disable - discharges 22μF output cap in ~1.5ms, enabling fast rail collapse for sequencing. |
| Operating Temp | -40°C to +125°C - qualified for industrial and automotive under-hood applications with full spec compliance. |
Pinout & Package
MAX38904DANL50+T uses a 5×3 bump wafer-level package (WLP), 2.2mm × 1.37mm, 0.4mm pitch, with no exposed pad. Package code N151B2+1; land pattern per Application Note 1891. Thermal resistance θJA = 61.55°C/W (four-layer board).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pins A1–A4, B1–B4) | Input supply connection | Four parallel IN pins reduce IR drop and improve current handling; requires 22μF X5R/X7R ceramic bypass to GND. |
| GND (Pins B1, B2, B3, B4, C1, C2) | Power ground reference | Six dedicated GND terminals minimize ground impedance and stabilize regulation under dynamic load transients. |
| EN (Pin A5) | Enable control input | Active-high logic interface; pulling low disables output and activates 70Ω active discharge path to GND. |
| BYP (Pin B5) | Bypass capacitor node | Connects to OUT via 47nF capacitor to set soft-start slew rate and reduce reference noise; sensitive to leakage <10nA. |
| OUTS (Pin C5) | Remote output sense | Connects directly to load point to compensate for PCB trace IR drop; enables accurate 5.0V regulation at point-of-load. |
| OUT (Pins C1–C4) | Regulated output | Four parallel output pins deliver up to 2A total; requires ≥8μF (X5R/X7R) ceramic output capacitance for stability. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-programmed 5.0V output | Eliminates external feedback resistors, saving PCB area and removing resistor tolerance/temperature drift errors. |
| 5.1μVRMS output noise (10Hz–100kHz) | Enables clean power for high-SNR signal chains - e.g., 24-bit delta-sigma ADCs requiring sub-10μV RMS noise floor. |
| 70Ω active discharge on EN deactivation | Reduces output discharge time by >90% vs passive RC decay, simplifying multi-rail power-down sequencing. |
| Remote sensing (OUTS pin) | Compensates for up to 100mV IR drop between LDO output and load, ensuring true 5.0V regulation at the IC pin. |
| Programmable soft-start via BYP capacitor | Startup slew rate adjustable from 0.5V/ms to 50V/ms using 1nF–100nF BYP-to-OUT capacitor - prevents input inrush. |
| Reverse-current protection | Blocks current flow from OUT to IN when VIN falls below VOUT −10mV - protects upstream supplies during power loss. |
Applications
| Medical Imaging Sensor Bias | High-Resolution Data Acquisition |
|---|---|
|
Use Scenario: Powering CMOS image sensor analog bias rails and column amplifiers in portable ultrasound devices. IC Role / Device Role / Timing Role: Low-noise 5.0V LDO supplying analog front-end circuitry with minimal added noise floor. Use Value: 5.1μVRMS noise ensures SNR degradation <0.1dB in 14-bit imaging paths; 2A capacity supports multi-channel sensor arrays. |
Use Scenario: Regulating reference voltage and analog supply for 24-bit delta-sigma ADCs in portable test equipment. IC Role / Device Role / Timing Role: Precision 5.0V source for ADC AVDD and reference buffer, rejecting switching noise from system DC/DC. Use Value: >70dB PSRR at 10kHz suppresses 1MHz DC/DC ripple; ±1% accuracy maintains absolute measurement linearity. |
| Industrial PLC Analog I/O Modules | Audio DAC Power Supply |
|
Use Scenario: Providing isolated 5.0V analog supply for 4–20mA transmitter circuits and precision op-amps in harsh environments. IC Role / Device Role / Timing Role: Robust LDO delivering stable 5.0V despite wide input variation (2.7–5.5V) and temperature swings. Use Value: -40°C to +125°C operation and 100mV dropout ensure reliability in uncooled enclosures; active discharge enables safe hot-swap. |
Use Scenario: Clean 5.0V supply for audio DAC digital core and analog output stage in high-end portable DAC/headphone amps. IC Role / Device Role / Timing Role: Ultra-low-noise post-regulator decoupling switching supply noise before DAC analog section. Use Value: 5.1μVRMS noise preserves THD+N <110dB; remote sensing (OUTS) eliminates trace resistance impact on analog ground integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX38904CANL+ | Adjustable output (0.6V–5.0V) via external FB resistors; same WLP package and 2A rating. | Requires resistor network and layout care; better for designs needing multiple output voltages or future flexibility. | Select MAX38904CANL+ if output voltage may change across product revisions or variants. |
| TPL7407LADGQR | 7-channel 200mA NMOS LDO array; 5.0V fixed option; 1.8V–5.5V input; 120mV dropout at 200mA. | Lower current per channel; not suitable for single-rail 2A loads; targets multi-supply distributed systems. | Choose TPL7407LADGQR only for multi-rail, low-current (<200mA/rail) applications where space-constrained integration matters more than noise. |
Compared with MAX38904CANL+, the MAX38904DANL50+T saves BOM cost and layout area by eliminating resistors, while offering identical noise, PSRR, and thermal specs. Compared with TPL7407LADGQR, it delivers 10× higher current in a single channel but lacks multi-output integration - making it optimal for high-fidelity, high-current analog rails.
Availability
MAX38904DANL50+T is available at Aetrix Electronics and suitable for medical imaging sensor bias, high-resolution data acquisition, industrial PLC analog I/O modules, and high-end audio DAC power supply applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX38904DANL50+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 since 1965.
The MAX38904 family was designed specifically for noise-sensitive, high-current analog power rails - emphasizing ultra-low output noise, tight DC accuracy, and robust protection in miniature WLP and TDFN packages for space-constrained systems.
FAQ
What is the exact output voltage tolerance of the MAX38904DANL50+T?
The MAX38904DANL50+T is factory-programmed to deliver 5.0V with ±1% DC accuracy over full load (0.1mA–2A), line (VIN = VOUT + 0.3V to 5.5V), and temperature (-40°C to +125°C) conditions - verified per Electrical Characteristics Table on page 5 of the datasheet.
Does the MAX38904DANL50+T require external feedback resistors?
No. The MAX38904DANL50+T has a factory-programmed 5.0V output and does not use FB pin functionality. External resistors are unnecessary - unlike the MAX38904B/C variants - simplifying layout and eliminating resistor-induced errors.
How does the active discharge feature work on the MAX38904DANL50+T?
When EN is pulled low, the MAX38904DANL50+T connects a 70Ω resistor between OUT and GND. This actively discharges output capacitors - e.g., a 22μF cap discharges from 5V to 1V in ~1.5ms - enabling deterministic power-down sequencing without external circuitry.
Can the MAX38904DANL50+T be used with ceramic output capacitors smaller than 22μF?
Yes. The MAX38904DANL50+T is stable with ≥8μF total ceramic output capacitance (X5R/X7R dielectric), including voltage derating. While 22μF is recommended for optimal transient response, 10μF–22μF is acceptable for space-constrained designs.
What is the purpose of the OUTS pin on the MAX38904DANL50+T?
The OUTS pin on the MAX38904DANL50+T provides remote output voltage sensing. Connecting OUTS directly to the load point compensates for PCB trace resistance, ensuring the regulated 5.0V is delivered precisely at the point-of-load - critical for high-accuracy analog systems.
MAX38904DANL50+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 15-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):
- 5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.3V @ 2A
- Current - Output:
- 2A
- Current - Quiescent (Iq):
- -
- 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:
- 15-WLP (2.1x1.34)
MAX38904DANL50+T FAQ
1.How can I place an order for MAX38904DANL50+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX38904DANL50+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 MAX38904DANL50+T reliable?
The price and inventory of MAX38904DANL50+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX38904DANL50+T is usually 5 days.
3.What payment methods are accepted for MAX38904DANL50+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX38904DANL50+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX38904DANL50+T?
MAX38904DANL50+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX38904DANL50+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 MAX38904DANL50+T?
For technical support, including MAX38904DANL50+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX38904DANL50+T requirements.
6.How does Aetrix verify that MAX38904DANL50+T is sourced from the original manufacturer or authorized distributors?
All MAX38904DANL50+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 MAX38904DANL50+T meets industry standards.
7.What is the process for return or replacement of MAX38904DANL50+T?
All MAX38904DANL50+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX38904DANL50+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 MAX38904DANL50+T part is unused and in its original packaging.
Return procedure for MAX38904DANL50+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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