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Analog Devices Inc./Maxim Integrated MAX38902DANT46+T
- Part No.:
- MAX38902DANT46+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 6-XFBGA, WLBGA
- Datasheet:
-
MAX38902DANT46+T.pdf
- Description:
- IC REG LINEAR 4.6V 500MA 6WLP
- Quantity:
- Payment:
- Shipping:
Inventory:4,606
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Product details
Overview
MAX38902DANT46+T from Analog Devices is a factory-programmed, low-noise 500mA LDO linear regulator delivering a precise 4.6V output with ±1% DC accuracy over load, line, and temperature. It operates from 1.7V to 5.5V input, maintains only 100mV max dropout at full 500mA load (with 3.6VIN), and features 10.5µVRMS output noise (10Hz–100kHz) - optimized for high-resolution data acquisition and audio power rails.
For engineers reviewing the MAX38902DANT46+T datasheet, MAX38902DANT46+T pinout, MAX38902DANT46+T application, or MAX38902DANT46+T equivalent, key selection criteria include its WLP package footprint, active discharge (800Ω), programmable soft-start via BYP capacitor, and factory-trimmed 4.6V output eliminating external feedback resistors or voltage-select pins.
Technical Context
The MAX38902DANT46+T uses a pMOS pass transistor architecture with internal 0.6V reference and precision trimming to deliver its fixed 4.6V output. Its control loop incorporates fast transient response enabled by the BYP pin's dedicated reference bypass path and programmable slew rate.
Protection logic includes thermal shutdown (trip at +165°C, restart at +150°C), output short-circuit current limiting (~700mA typ), and reverse-current blocking triggered when VIN falls 10mV below VOUT. The 800Ω active discharge circuit engages on EN deassertion to rapidly drain output capacitance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Factory-trimmed 4.6V ±1% - eliminates need for external feedback network or voltage-select logic. |
| Max Output Current | 500mA - sufficient for powering ADCs, DACs, or RF front-end bias rails without external boost. |
| Output Noise | 10.5µVRMS (10Hz–100kHz) - enables use in 24-bit SAR ADC reference supplies and low-jitter clock buffers. |
| Dropout Voltage | ≤100mV at 500mA (3.6VIN) - supports operation from single Li-ion or 3.3V system rails with minimal headroom loss. |
| PSRR | 70dB at 10kHz - suppresses switching noise from adjacent DC/DC converters feeding mixed-signal subsystems. |
| Supply Current | 365µA no-load - independent of dropout, enabling stable quiescent power in battery-backed sensor nodes. |
| Active Discharge | 800Ω pull-down on OUT during shutdown - ensures rapid, controlled discharge for safe multi-rail sequencing. |
Pinout & Package
MAX38902DANT46+T is housed in a 2 × 3, 0.4mm-pitch wafer-level package (WLP) with 6 solder bumps. The exposed die attach area provides thermal conduction but is not electrically connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (A1) | IN | Input supply (1.7V–5.5V); requires 4.7µF ceramic bypass to GND for stability and noise rejection. |
| 2 (A2) | GND | Regulator ground reference; all bypass caps must connect here to minimize ground bounce. |
| 3 (A3) | EN | Active-high enable; pulling low disables output and activates 800Ω active discharge to GND. |
| 4 (B1) | OUT | Regulated 4.6V output; sources up to 500mA; requires ≥2µF low-ESR ceramic capacitor to GND. |
| 5 (B2) | BYP | Bypass node for reference filtering and soft-start timing; 0.001–0.1µF cap sets startup slew rate. |
| 6 (B3) | OUTS | Output sense terminal; connects directly to load for remote sensing, compensating PCB trace resistance. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-Trimmed Output | 4.6V set at wafer test - eliminates external resistor network, layout area, and calibration overhead. |
| Ultra-Low Noise Regulation | 10.5µVRMS broadband noise - meets stringent spectral purity requirements for precision analog signal chains. |
| Programmable Soft-Start | Startup slew rate adjustable via BYP capacitor (0.001–0.1µF) - prevents inrush current and rail collapse. |
| Reverse-Current Protection | Automatic blocking when VOUT > VIN by >10mV - prevents backfeed during hot-swap or partial power-down. |
| Thermal & Overcurrent Protection | Hysteretic shutdown (165°C trip / 150°C recovery) and ~700mA current limit - ensures robustness under fault conditions. |
Applications
| High-Resolution Data Acquisition | Audio Power Supply |
|---|---|
|
Use Scenario: Powering 24-bit delta-sigma ADCs and precision voltage references in portable instrumentation. IC Role / Device Role / Timing Role: Low-noise, high-accuracy analog supply rail generator with remote sensing (OUTS) for load regulation. Use Value: 10.5µVRMS noise and ±1% output accuracy preserve effective number of bits (ENOB) across temperature and load. |
Use Scenario: Biasing Class-AB headphone amplifiers and MEMS microphone preamps in wireless earbuds. IC Role / Device Role / Timing Role: Clean, sequenced power domain for analog audio stages requiring fast turn-on and zero reverse current. Use Value: 365µA quiescent current extends battery life; 800Ω active discharge enables safe, rapid power-down sequencing. |
| Communications Baseband | Industrial Sensor Signal Conditioning |
|
Use Scenario: Supplying RF transceiver baseband ICs and PLL VCO tuning ports in small-cell radios. IC Role / Device Role / Timing Role: Low-PSRR-sensitive local regulator decoupling noisy digital supply domains from analog signal paths. Use Value: 70dB PSRR at 10kHz suppresses switching artifacts from nearby buck converters feeding digital cores. |
Use Scenario: Powering isolated analog front-ends in 4–20mA loop-powered field transmitters. IC Role / Device Role / Timing Role: Stable, low-headroom supply for op-amps and RTD bridges operating from limited loop voltage. Use Value: 100mV dropout at 500mA allows full regulation down to 4.7V input - maximizing usable loop voltage range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX38902DANT33+ | Factory-programmed to 3.3V instead of 4.6V; identical WLP package, noise, and protection features. | Used where 3.3V logic or interface I/O rails require same ultra-low-noise performance. | Select when system voltage rails align with 3.3V rather than 4.6V; pin-compatible and drop-in replaceable. |
| TPL7407LPGDR | 400mA, 12µVRMS noise, SOT-23-6 package; lacks OUTS sense pin and active discharge. | Suitable for cost-sensitive, space-constrained designs where remote sensing and fast discharge are not required. | Choose for simpler, lower-current applications without remote sensing or strict sequencing needs. |
Compared with MAX38902DANT33+ and TPL7407LPGDR, the MAX38902DANT46+T uniquely delivers factory-trimmed 4.6V output with remote sensing (OUTS) and active discharge - critical for precision analog systems requiring exact voltage alignment and controlled power sequencing.
Availability
MAX38902DANT46+T is available at Aetrix Electronics and suitable for high-resolution data acquisition, audio power supply, and communications baseband applications requiring stable component supply, tight output tolerance, and low-noise regulation.
Supply support for MAX38902DANT46+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 was designed specifically for ultra-low-noise, high-accuracy power delivery in precision analog signal chains - emphasizing noise floor, DC accuracy, and protection integrity over raw efficiency or integration density.
FAQ
What is the output voltage tolerance of the MAX38902DANT46+T over temperature and load?
The MAX38902DANT46+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 for the factory-trimmed 4.6V version and verified per Electrical Characteristics table in the datasheet.
Does the MAX38902DANT46+T require an external feedback resistor network?
No. The MAX38902DANT46+T is factory-programmed to 4.6V and contains no feedback pins (FB or SELA/SELB). Unlike MAX38902B/C or MAX38902A variants, it operates as a fixed-output LDO with no external resistor dependencies - simplifying layout and reducing BOM count.
What is the purpose of the OUTS pin on the MAX38902DANT46+T?
The OUTS (output sense) pin on the MAX38902DANT46+T provides remote voltage sensing capability. When connected directly to the load, it compensates for IR drop across PCB traces or connectors, ensuring regulation accuracy at the point of load - critical for high-precision analog circuits.
Can the MAX38902DANT46+T be used with ceramic output capacitors smaller than 4.7µF?
Yes. The MAX38902DANT46+T is stable with a minimum 2µF ceramic output capacitor (including voltage derating). While 4.7µF is recommended for optimal transient response and noise suppression, X5R/X7R 2.2µF or 3.3µF capacitors meeting ESR < 0.03Ω are acceptable per the datasheet's stability criteria.
How does the active discharge feature function on the MAX38902DANT46+T?
When the EN pin is pulled low, the MAX38902DANT46+T internally connects an 800Ω resistor between the OUT pin and GND. This actively discharges the output capacitor, reducing discharge time versus passive bleed networks - essential for reliable power sequencing in multi-rail systems.
MAX38902DANT46+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):
- 4.6V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.3V @ 500mA
- Current - Output:
- 500mA
- Current - Quiescent (Iq):
- 600 µA
- Current - Supply (Max):
- -
- PSRR:
- 70dB ~ 40dB (1kHz ~ 1MHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Reverse Polarity
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-WLP (1.22x0.82)
MAX38902DANT46+T FAQ
1.How can I place an order for MAX38902DANT46+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX38902DANT46+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 MAX38902DANT46+T reliable?
The price and inventory of MAX38902DANT46+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX38902DANT46+T is usually 5 days.
3.What payment methods are accepted for MAX38902DANT46+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX38902DANT46+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX38902DANT46+T?
MAX38902DANT46+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX38902DANT46+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 MAX38902DANT46+T?
For technical support, including MAX38902DANT46+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX38902DANT46+T requirements.
6.How does Aetrix verify that MAX38902DANT46+T is sourced from the original manufacturer or authorized distributors?
All MAX38902DANT46+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 MAX38902DANT46+T meets industry standards.
7.What is the process for return or replacement of MAX38902DANT46+T?
All MAX38902DANT46+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX38902DANT46+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 MAX38902DANT46+T part is unused and in its original packaging.
Return procedure for MAX38902DANT46+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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