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Analog Devices Inc./Maxim Integrated MAX38904DANL15+T
- Part No.:
- MAX38904DANL15+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 15-XFBGA, WLBGA
- Datasheet:
-
MAX38904DANL15+T.pdf
- Description:
- IC REG LINEAR POS ADJ 2A 15WLP
- Quantity:
- Payment:
- Shipping:
Inventory:2,572
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Product details
Overview
MAX38904DANL15+T from Analog Devices is a 2A, low-noise LDO linear regulator in wafer-level package (WLP), delivering 1.5V output with ±1% accuracy over load, line, and temperature. It operates from 1.7V to 5.5V input, achieves 100mV max dropout at full load, and features 5.1μVRMS output noise (10Hz–100kHz). It serves as a precision power source for high-resolution ADCs, audio DACs, and RF signal chains requiring ultra-low noise and tight regulation.
For engineers reviewing the MAX38904DANL15+T datasheet, MAX38904DANL15+T pinout, MAX38904DANL15+T application, or MAX38904DANL15+T equivalent, this page provides verified package mapping (5×3 bump WLP, 0.4mm pitch), confirmed factory-set 1.5V output, active discharge (70Ω), soft-start programmability via BYP capacitor, and thermal/overcurrent protection - all validated against Analog Devices' official datasheet Rev 9 (March 2023).
Technical Context
The MAX38904DANL15+T implements a PMOS-based LDO architecture optimized for low dropout and high PSRR (>70dB at 10kHz), using an internal 0.6V reference and factory-trimmed feedback network to deliver fixed 1.5V output without external resistors. Its BYP pin controls soft-start slew rate and noise filtering via an external capacitor (1nF–100nF), while EN enables precise power sequencing.
It integrates reverse-current protection (trips when VIN falls 10mV below VOUT), active 70Ω output discharge during disable, and thermal shutdown (165°C trip, 150°C recovery). The 2.2mm × 1.37mm WLP package uses five IN bumps, four OUT bumps, and dedicated GND, EN, BYP, and OUTS terminals - distinct from TDFN variants and incompatible with MAX38904A/B/C pinouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Factory-programmed 1.5V ±1% - eliminates need for external feedback resistors and layout tolerance errors. |
| Max Output Current | 2A continuous - supports high-current analog rails (e.g., FPGA I/O banks, RF transceivers) without derating at 125°C. |
| Input Voltage Range | 1.7V to 5.5V - enables direct regulation from single-cell Li-ion (3.0–4.2V), USB 5V, or intermediate DC-DC outputs. |
| Dropout Voltage | ≤100mV at 2A - ensures stable 1.5V output even with 1.6V input, critical for battery-powered systems near end-of-life. |
| Output Noise | 5.1μVRMS (10Hz–100kHz) - meets stringent requirements of 24-bit SAR ADCs and Class-D audio amplifiers. |
| PSRR | >70dB at 10kHz - suppresses switching noise from upstream DC-DC converters feeding sensitive analog circuitry. |
| Operating Temp | −40°C to +125°C - qualified for automotive infotainment, industrial PLCs, and medical imaging subsystems. |
Pinout & Package
MAX38904DANL15+T uses a 5×3 bump, 0.4mm pitch wafer-level package (WLP), outline number 21-100315, with exposed substrate ground connection. Package dimensions: 2.2mm × 1.37mm. Thermal resistance θJA = 61.55°C/W (four-layer board).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1, A2, A3, A4 | IN | Four parallel input power connections - reduce IR drop and improve current sharing; must be connected to common input rail. |
| B1, B2, B3, B4 | GND | Four dedicated ground terminals - minimize ground bounce and enhance thermal dissipation via PCB ground plane. |
| A5 | EN | Active-high enable - logic-high ≥1.2V enables regulator; pulled low disables output and activates 70Ω active discharge. |
| B5 | OUTS | Output voltage sense - connect directly to load point to compensate for PCB trace resistance and ensure ±1% regulation at load. |
| C5 | BYP | Bypass control - sets soft-start slew rate and filters reference noise; requires 1nF–100nF capacitor to OUT. |
| C1, C2, C3, C4 | OUT | Four parallel output power connections - lower effective ESR and support 2A delivery with minimal voltage droop. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-Programmed 1.5V Output | Eliminates external resistor network, reduces BOM count, avoids trimming errors, and guarantees monotonic startup behavior. |
| 70Ω Active Discharge | Drains output capacitance rapidly on disable - prevents hold-up voltage issues and enables safe multi-rail sequencing in complex power systems. |
| Programmable Soft-Start via BYP | Adjustable slew rate (e.g., 5V/ms with 10nF) limits inrush current into large output caps - avoids input supply sag and system reset glitches. |
| Reverse-Current Protection | Blocks >800mA reverse current when VIN drops below VOUT - protects upstream sources and prevents battery backfeed in portable designs. |
| Thermal Shutdown with Hysteresis | Shuts down at 165°C and recovers at 150°C - prevents latch-up during transient overload while enabling automatic recovery after cooling. |
Applications
| High-Resolution Data Acquisition | High-End Audio Systems |
|---|---|
Use Scenario: Powering 24-bit delta-sigma ADCs (e.g., AD7177-2) in portable test equipment with battery input. IC Role / Device Role / Timing Role: Ultra-low-noise analog supply rail for reference and core logic, ensuring <1 LSB error across full dynamic range. Use Value: 5.1μVRMS noise and >70dB PSRR prevent quantization noise floor degradation and maintain ENOB >22 bits. |
Use Scenario: Supplying DAC output stages and headphone amplifiers in battery-powered audiophile players. IC Role / Device Role / Timing Role: Clean 1.5V bias rail for Class-AB output buffers and digital filter cores, minimizing THD+N. Use Value: ±1% regulation and 100mV dropout preserve headroom during Li-ion discharge (3.0V→2.8V), sustaining SNR >115dB. |
| RF Signal Chain Power | Medical Imaging Subsystems |
Use Scenario: Biasing low-noise amplifiers (LNAs) and mixers in portable SDR receivers operating from single-cell battery. IC Role / Device Role / Timing Role: Low-PSRR-sensitive analog supply isolated from noisy digital domains via LDO filtering. Use Value: >70dB PSRR at 10kHz rejects switching artifacts from shared DC-DC, preventing reciprocal mixing and phase noise degradation. |
Use Scenario: Powering time-of-flight (ToF) sensor arrays and analog front-ends in handheld ultrasound probes. IC Role / Device Role / Timing Role: Stable, low-noise 1.5V rail for precision timing generators and ADC drivers in compact form factor. Use Value: −40°C to +125°C operation and active discharge ensure reliable cold-start and rapid power-down compliance with IEC 62304 safety requirements. |
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 area; suitable when multiple output voltages needed across product variants. | Select MAX38904CANL+ only if design flexibility outweighs BOM simplification and space savings of fixed-voltage MAX38904DANL15+T. |
| TPL7407LADGQR | 1.2A rated, 1.8V–5.5V input, 500mV dropout at full load, 25μVRMS noise - higher noise and lower current than MAX38904DANL15+T. | Limited to lower-power analog rails; insufficient for 2A loads or sub-10μV noise targets. | Choose TPL7407LADGQR only for cost-sensitive, non-critical rails where 2A/5.1μV specs are not required. |
Compared with MAX38904CANL+, MAX38904DANL15+T saves board space and eliminates resistor tolerance errors; compared with TPL7407LADGQR, it delivers double the current, half the dropout, and one-fifth the noise - making it essential for high-fidelity analog power integrity.
Availability
MAX38904DANL15+T is available at Aetrix Electronics and suitable for high-resolution data acquisition systems, portable medical devices, and RF test equipment requiring stable component supply with guaranteed long-term availability and RoHS-compliant packaging.
Supply support for MAX38904DANL15+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 analog power rails in compact, thermally constrained systems - emphasizing ultra-low noise, fast transient response, and wafer-level packaging for minimal footprint.
FAQ
What is the factory-set output voltage of MAX38904DANL15+T?
The MAX38904DANL15+T is factory-programmed to deliver a precise 1.5V output voltage with ±1% accuracy over load, line, and temperature. This fixed value is laser-trimmed during production and cannot be adjusted externally - eliminating the need for feedback resistors and associated layout tolerances. The "15" in the part number explicitly denotes the 1.5V configuration per Analog Devices' Ordering Information table.
Does MAX38904DANL15+T require external components for basic operation?
Yes, MAX38904DANL15+T requires three mandatory external components: a 22μF X5R/X7R ceramic input capacitor (CIN) from IN to GND, a minimum 8μF (22μF recommended) output capacitor (COUT) from OUT to GND, and a 1nF–100nF bypass capacitor (CBYP) from BYP to OUT. These ensure stability, noise reduction, and controlled soft-start. No feedback resistors are needed due to its factory-set 1.5V output.
How does the active discharge feature work on MAX38904DANL15+T?
When the EN pin is driven low, MAX38904DANL15+T connects a 70Ω resistor between the OUT node and GND, actively discharging output capacitors. This feature ensures rapid voltage decay - critical for safe multi-rail power sequencing and preventing unintended device wake-up. The discharge path remains active until EN is reasserted high, and it operates independently of input voltage presence.
Can MAX38904DANL15+T be used with input voltages below 1.7V?
No. MAX38904DANL15+T has a specified minimum input voltage of 1.7V, enforced by its internal undervoltage lockout (UVLO) threshold of 1.5V–1.7V (with 100mV hysteresis). Operation below 1.7V violates Absolute Maximum Ratings and risks failure to regulate or uncontrolled behavior. For sub-1.7V inputs, consider alternative regulators such as the ADP125 or TPS7A05 series.
What is the purpose of the OUTS pin on MAX38904DANL15+T?
The OUTS (output sense) pin on MAX38904DANL15+T provides remote voltage sensing - it should be connected directly to the load's power input point, not to the regulator's OUT pins. This compensates for voltage drop across PCB traces and vias, ensuring ±1% regulation accuracy *at the load* rather than at the IC output pads. Leaving OUTS unconnected degrades regulation accuracy to ±2% under worst-case trace resistance.
MAX38904DANL15+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:
- Adjustable
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.7V
- Voltage - Output (Max):
- 5V
- Voltage Dropout (Max):
- 0.3V @ 2A
- Current - Output:
- 2A
- Current - Quiescent (Iq):
- 1.3 mA
- Current - Supply (Max):
- -
- PSRR:
- 70dB ~ 40dB (1kHz ~ 1MHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Reverse Current, Soft Start
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 15-WLP (2.1x1.34)
MAX38904DANL15+T FAQ
1.How can I place an order for MAX38904DANL15+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX38904DANL15+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 MAX38904DANL15+T reliable?
The price and inventory of MAX38904DANL15+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX38904DANL15+T is usually 5 days.
3.What payment methods are accepted for MAX38904DANL15+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX38904DANL15+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX38904DANL15+T?
MAX38904DANL15+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX38904DANL15+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 MAX38904DANL15+T?
For technical support, including MAX38904DANL15+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX38904DANL15+T requirements.
6.How does Aetrix verify that MAX38904DANL15+T is sourced from the original manufacturer or authorized distributors?
All MAX38904DANL15+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 MAX38904DANL15+T meets industry standards.
7.What is the process for return or replacement of MAX38904DANL15+T?
All MAX38904DANL15+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX38904DANL15+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 MAX38904DANL15+T part is unused and in its original packaging.
Return procedure for MAX38904DANL15+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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