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Analog Devices Inc./Maxim Integrated MAX38902DANT27+
- Part No.:
- MAX38902DANT27+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 6-XFBGA, WLBGA
- Datasheet:
-
MAX38902DANT27+.pdf
- Description:
- IC REG LINEAR 2.7V 500MA 6WLP
- Quantity:
- Payment:
- Shipping:
Inventory:4,788
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Product details
Overview
MAX38902DANT27+ from Analog Devices is a factory-programmed, low-noise 500mA LDO linear regulator delivering a fixed 2.7V output with ±1% DC accuracy over load, line, and temperature. It operates from 1.7V to 5.5V input, requires only 100mV dropout at full load, and achieves 10.5µVRMS output noise (10Hz–100kHz) - ideal for powering high-resolution ADCs and audio DACs in portable instrumentation.
For engineers reviewing the MAX38902DANT27+ datasheet, MAX38902DANT27+ pinout, MAX38902DANT27+ application, or MAX38902DANT27+ equivalent, key selection criteria include its WLP package footprint, active discharge capability, programmable soft-start, and guaranteed stability with ≥2µF ceramic output capacitance.
Technical Context
The MAX38902DANT27+ implements a pMOS pass transistor architecture with internal 0.6V reference and precision feedback network trimmed at wafer test to deliver exactly 2.7V output. Its control loop maintains regulation across –40°C to +125°C while rejecting supply ripple via 70dB PSRR at 10kHz.
It integrates thermal shutdown (165°C trip), overcurrent limiting (~700mA), reverse-current protection (activated when VIN falls 10mV below VOUT), and an 800Ω active discharge path activated on EN deassertion - all without external components beyond standard IN/OUT/BYP capacitors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.7V, factory-trimmed to ±1% accuracy across temperature, load, and line variation. |
| Max Output Current | 500mA continuous; current limit clamps at ~700mA to prevent damage during short-circuit events. |
| Input Voltage Range | 1.7V to 5.5V - supports single-cell Li-ion, USB, and multi-rail system supplies. |
| Dropout Voltage | ≤100mV at 500mA (VIN = 3.6V); enables efficient operation even near battery end-of-discharge. |
| Output Noise | 10.5µVRMS (10Hz–100kHz); enables clean power for 24-bit SAR ADCs and Class-D audio amplifiers. |
| PSRR | 70dB at 10kHz - suppresses switching noise from adjacent DC/DC converters feeding the LDO input. |
| Soft-Start | Programmable via 0.001–0.1µF BYP capacitor; prevents inrush current and stabilizes sequencing in multi-rail systems. |
| Shutdown Current | <0.1µA - ensures zero-load leakage in battery-backed sleep modes. |
Pinout & Package
The MAX38902DANT27+ is housed in a 2 × 3 bump, 0.4mm pitch wafer-level package (WLP), measuring 1.22mm × 0.82mm. The exposed bump array provides low-inductance connections and minimal PCB footprint - optimized for space-constrained portable and wearable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (A1) | IN | Input supply rail (1.7V–5.5V); requires 4.7µF ceramic bypass to GND for stability and EMI suppression. |
| 2 (A2) | GND | Power ground reference; connects IN/OUT capacitor grounds and serves as thermal return path for WLP bumps. |
| 3 (A3) | EN | Active-high enable; pulling low disables regulator and activates 800Ω active discharge to OUT. |
| 4 (B1) | OUT | Regulated 2.7V output; sources up to 500mA; requires ≥2µF low-ESR ceramic capacitor to GND. |
| 5 (B2) | BYP | Bypass node for noise filtering and soft-start timing; connects to OUT via 0.01µF capacitor (default). |
| 6 (B3) | OUTS | Output voltage sense point; connects directly to load for remote sensing and eliminates PCB trace IR drop. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-Trimmed Output | 2.7V set at wafer test - eliminates external resistors and layout sensitivity of feedback networks. |
| Active Discharge | 800Ω internal pull-down on OUT when EN = low - reduces output discharge time by >10× vs passive RC decay. |
| Reverse-Current Protection | Automatic MOSFET gate cutoff when VIN < VOUT − 10mV - prevents backfeed from output caps into input rail. |
| Thermal & Overcurrent Protection | Hysteretic shutdown (165°C on / 150°C off) plus current limiting - enables safe operation under sustained overload. |
| Low-Noise Reference Architecture | Integrated 0.6V bandgap + BYP-filtered error amplifier - achieves 10.5µVRMS without external noise-reduction circuitry. |
Applications
| Portable Audio Codec Power | High-Resolution ADC Bias Supply |
|---|---|
|
Use Scenario: Powering stereo audio DACs and headphone amplifiers in Bluetooth earbuds with strict THD+N requirements. IC Role / Device Role / Timing Role: Low-noise 2.7V bias rail for analog signal chain; replaces discrete RC filters and improves SNR by >3dB. Use Value: 10.5µVRMS noise and 70dB PSRR at 10kHz suppress switching artifacts from PMIC DC/DC stages, enabling >110dB dynamic range. |
Use Scenario: Supplying reference and analog front-end circuits in 24-bit precision data acquisition modules. IC Role / Device Role / Timing Role: Stable, ultra-low-noise VREF/VDDA source for SAR ADCs and instrumentation amplifiers. Use Value: ±1% output accuracy and sub-100mV dropout ensure consistent LSB weighting across battery voltage sag, improving measurement repeatability. |
| Wearable Sensor Hub Power | Industrial IoT Edge Node Core Rail |
|
Use Scenario: Providing regulated 2.7V to MEMS accelerometers, gyroscopes, and low-power MCUs in compact fitness trackers. IC Role / Device Role / Timing Role: Primary core supply with fast enable/disable and active discharge for precise power sequencing. Use Value: 0.1µA shutdown current extends coin-cell life; 1.22mm × 0.82mm WLP footprint saves >60% board area vs TDFN alternatives. |
Use Scenario: Delivering clean 2.7V to isolated RS-485 transceivers and low-power Cortex-M4 microcontrollers in field-deployed sensors. IC Role / Device Role / Timing Role: Robust local LDO with thermal/overcurrent protection in unventilated enclosures. Use Value: Hysteretic thermal shutdown (165°C/150°C) prevents latch-up in high-ambient environments; reverse-current protection avoids bus contention during hot-swap events. |
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 output; identical WLP package, pinout, and feature set. | Used where system logic or interface I/O requires 3.3V instead of 2.7V - no redesign needed beyond voltage check. | Select when 3.3V rail is required; shares same layout, BOM, and qualification data as MAX38902DANT27+. |
| Torex XC6210B272MR-G | 2.7V fixed-output LDO in 1.2 × 1.2mm DFN; 150mA max current, 25µVRMS noise, no active discharge or OUTS pin. | Suitable for lower-current sensor nodes but lacks remote sensing, soft-start programming, and robust protection features. | Choose only for cost-sensitive, low-power (<150mA), non-critical analog rails where 25µVRMS noise is acceptable. |
Compared with MAX38902DANT33+, the MAX38902DANT27+ delivers identical performance at 2.7V - critical for analog subsystems requiring tighter headroom than 3.3V allows. Versus XC6210B272MR-G, it offers 3.3× higher current, 2.4× lower noise, and integrated protection essential for industrial reliability.
Availability
MAX38902DANT27+ is available at Aetrix Electronics and suitable for portable audio systems, high-resolution data acquisition, and wearable sensor hubs requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX38902DANT27+ 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 ultra-low-noise, high-accuracy power regulation in space- and noise-constrained applications - emphasizing factory-trimmed precision, WLP miniaturization, and comprehensive fault protection.
FAQ
What is the output voltage tolerance of the MAX38902DANT27+ over temperature and load?
The MAX38902DANT27+ maintains ±1% DC output accuracy across –40°C to +125°C, full load (0.1mA to 500mA), and input voltage range (VOUT + 0.3V to 5.5V). This specification is guaranteed by design and characterization, with production testing performed at +25°C per the datasheet.
Does the MAX38902DANT27+ require external resistors to set its output voltage?
No. The MAX38902DANT27+ is factory-programmed to 2.7V during wafer test - no external feedback resistors are needed. This eliminates resistor tolerance errors, layout sensitivity, and board space typically required by adjustable LDOs like the MAX38902B/C variants.
Can the MAX38902DANT27+ be used with ceramic output capacitors smaller than 4.7µF?
Yes. The MAX38902DANT27+ is stable with a minimum 2µF ceramic output capacitor (including voltage derating), such as a 4.7µF X5R/X7R part that retains ≥2µF under DC bias. Using ≥2µF ensures phase margin >45° and transient response within 50mV for 500mA load steps.
What protection features are integrated into the MAX38902DANT27+?
The MAX38902DANT27+ includes overcurrent limiting (~700mA), thermal shutdown (165°C trip with 15°C hysteresis), reverse-current protection (activates when VIN drops 10mV below VOUT), and active discharge (800Ω pull-down on OUT when EN is low) - all implemented internally without external components.
Is the MAX38902DANT27+ pin-compatible with other members of the MAX38902 family?
The MAX38902DANT27+ shares the same 6-bump WLP footprint and pinout with MAX38902CANT+, MAX38902DANT12+, and MAX38902DANT33+. However, it is not pin-compatible with the 8-pin TDFN variants (MAX38902A/B), which have different pin count, layout, and SELA/SELB or POK functionality.
MAX38902DANT27+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 6-XFBGA, WLBGA
- Packaging:
- Strip
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 2.7V
- 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)
MAX38902DANT27+ FAQ
1.How can I place an order for MAX38902DANT27+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX38902DANT27+ 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 MAX38902DANT27+ reliable?
The price and inventory of MAX38902DANT27+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX38902DANT27+ is usually 5 days.
3.What payment methods are accepted for MAX38902DANT27+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX38902DANT27+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX38902DANT27+?
MAX38902DANT27+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX38902DANT27+ 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 MAX38902DANT27+?
For technical support, including MAX38902DANT27+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX38902DANT27+ requirements.
6.How does Aetrix verify that MAX38902DANT27+ is sourced from the original manufacturer or authorized distributors?
All MAX38902DANT27+ 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 MAX38902DANT27+ meets industry standards.
7.What is the process for return or replacement of MAX38902DANT27+?
All MAX38902DANT27+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX38902DANT27+, 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 MAX38902DANT27+ part is unused and in its original packaging.
Return procedure for MAX38902DANT27+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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