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Analog Devices Inc./Maxim Integrated MAX38902DANT12+T
- Part No.:
- MAX38902DANT12+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 6-XFBGA, WLBGA
- Datasheet:
-
MAX38902DANT12+T.pdf
- Description:
- IC REG LINEAR 1.2V 500MA 6WLP
- Quantity:
- Payment:
- Shipping:
Inventory:4,819
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Product details
Overview
MAX38902DANT12+T from Analog Devices is a factory-programmed, low-noise 500mA LDO linear regulator delivering 1.2V output with ±1% DC accuracy, 10.5µVRMS output noise (10Hz–100kHz), 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 overcurrent/thermal protection - deployed in high-resolution data acquisition systems where supply rail stability and noise immunity are critical.
For engineers reviewing the MAX38902DANT12+T datasheet, MAX38902DANT12+T pinout, MAX38902DANT12+T application, or MAX38902DANT12+T equivalent, this page delivers verified package mapping (2×3 WLP), terminal roles, real-world design meaning of PSRR (70dB @ 10kHz), soft-start control via BYP capacitor, and factory-trimmed 1.2V regulation without external resistors.
Technical Context
The MAX38902DANT12+T uses a pMOS pass transistor architecture enabling ultra-low dropout and reverse-current protection triggered when VIN falls 10mV below VOUT. Its internal 0.6V reference and feedback amplifier achieve ±1% output accuracy across -40°C to +125°C, load (0.1–500mA), and line (VIN = VOUT + 0.3V to 5.5V) variations.
Startup behavior is controlled by the BYP pin: a 10nF capacitor sets 5V/ms slew rate, limiting inrush current during power-up; recovery from short-circuit occurs ~500× slower. The 800Ω active discharge path engages on EN low, discharging output capacitance rapidly for precise power sequencing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Factory-trimmed 1.2V ±1% - eliminates need for external feedback resistors and associated layout sensitivity. |
| Max Output Current | 500mA - supports moderate-power analog rails (e.g., ADC/DAC bias, RF synthesizer VCO supplies). |
| Output Noise | 10.5µVRMS (10Hz–100kHz) - enables clean power for 24-bit SAR ADCs and low-phase-noise clock buffers. |
| PSRR | 70dB @ 10kHz - suppresses switching noise from upstream DC-DC converters feeding the LDO input. |
| Dropout Voltage | ≤100mV @ 500mA (3.6VIN) - allows operation from single-cell Li-ion (3.0–4.2V) or 3.3V system rails with margin. |
| Supply Current | 365µA no-load - independent of dropout voltage, enabling predictable quiescent power in battery-powered designs. |
| Shutdown Current | <0.1µA - ensures minimal leakage during deep sleep modes in portable instrumentation. |
Pinout & Package
MAX38902DANT12+T is housed in a 2×3 wafer-level package (WLP) with 0.4mm pitch, measuring 2.0mm × 3.0mm. The exposed bump array provides low thermal resistance (θJA = 95.1°C/W on 4-layer board) and requires solder-mask-defined pads per land pattern AN1891.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (A1) | IN | Input supply (1.7–5.5V); bypassed with ≥4.7µF ceramic capacitor to GND for stability and transient response. |
| 2 (A2) | GND | Regulator ground reference; connects IN/OUT capacitor grounds to minimize ground bounce and improve PSRR. |
| 3 (A3) | EN | Active-high enable; pulling low activates 800Ω active discharge to GND, enabling fast output discharge for sequencing. |
| 4 (B1) | BYP | Bypass node for noise filtering and soft-start control; 10nF capacitor sets 5V/ms startup slew rate and reduces reference noise. |
| 5 (B2) | OUTS | Output sense terminal; connected directly to load point to compensate for PCB trace IR drop and maintain regulation accuracy. |
| 6 (B3) | OUT | Regulated 1.2V output (500mA max); requires ≥2µF low-ESR ceramic capacitor to GND for stability. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-Programmed 1.2V Output | Eliminates external resistor network, reducing BOM count, layout area, and trimming uncertainty in production. |
| 10.5µVRMS Ultra-Low Noise | Enables direct powering of precision analog signal chains (e.g., audio codecs, medical front-ends) without additional filtering. |
| 800Ω Active Discharge | Reduces output discharge time from milliseconds to microseconds, simplifying multi-rail power-down sequencing in FPGA/ASIC systems. |
| Programmable Soft-Start via BYP | Adjustable startup slew rate (via 0.001–0.1µF capacitor) prevents inrush current spikes and avoids brownout in shared input rails. |
| Reverse-Current Protection | Blocks >200mA reverse current when VOUT > VIN, protecting upstream sources during hot-swap or power-loss transients. |
Applications
| High-Resolution Data Acquisition | Portable Audio Systems |
|---|---|
Use Scenario: Powering 24-bit delta-sigma ADCs and precision voltage references in handheld test equipment. IC Role / Device Role / Timing Role: Low-noise, stable 1.2V supply for ADC analog core and reference buffer, minimizing quantization noise floor degradation. Use Value: 10.5µVRMS noise and ±1% accuracy preserve effective number of bits (ENOB) across temperature and load variation. |
Use Scenario: Supplying DAC and headphone amplifier stages in Bluetooth-enabled portable speakers. IC Role / Device Role / Timing Role: Clean 1.2V rail for Class AB output stage bias and digital audio interface logic, rejecting switch-mode PSU noise. Use Value: 70dB PSRR at 10kHz attenuates DC-DC ripple, preventing audible beat frequencies and THD increase in audio band. |
| Industrial Sensor Signal Conditioning | Low-Power IoT Edge Nodes |
Use Scenario: Biasing MEMS accelerometers and bridge-based strain gauges in condition-monitoring vibration sensors. IC Role / Device Role / Timing Role: Precision 1.2V excitation source and analog front-end supply, maintaining gain/offset stability over -40°C to +125°C. Use Value: ±1% DC accuracy and 100mV dropout enable reliable operation from wide-input industrial 3.3V/5V rails with minimal headroom loss. |
Use Scenario: Powering ultra-low-power microcontrollers and sub-GHz RF transceivers in battery-operated environmental monitors. IC Role / Device Role / Timing Role: Primary regulated supply during active sensing/transmit cycles; shutdown current <0.1µA extends shelf life. Use Value: 365µA no-load IQ and fast EN-controlled discharge reduce average system power, extending coin-cell lifetime beyond 5 years. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX38902DANT18+T | Factory-programmed 1.8V output; identical WLP package, pinout, and feature set. | Used where higher core voltage required for 1.8V I/O interfaces or specific sensor bias points. | Select when system requires 1.8V instead of 1.2V - same footprint, no layout change needed. |
| TPL7407LADGKR | 400mA, 1.2V fixed-output LDO in 8-pin VSSOP; 25µVRMS noise, 120mV dropout @ 400mA. | Larger package, higher noise, lower current - suitable for less demanding analog rails. | Choose for cost-sensitive, non-precision applications where 10.5µVRMS noise and 500mA are not required. |
Compared with MAX38902DANT12+T, MAX38902DANT18+T offers identical performance at 1.8V for compatibility with 1.8V logic domains, while TPL7407LADGKR trades noise and current capability for lower unit cost and broader availability - but lacks active discharge and OUTS sensing.
Availability
MAX38902DANT12+T is available at Aetrix Electronics and suitable for high-resolution data acquisition systems, portable audio subsystems, industrial sensor nodes, and low-power IoT edge devices requiring stable component supply, long-term lifecycle support, and guaranteed factory-trimmed voltage accuracy.
Supply support for MAX38902DANT12+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 precision instrumentation, industrial automation, and communications markets since 1965.
The MAX38902 family targets noise-sensitive analog power delivery, with the MAX38902D variant optimized for space-constrained, high-volume applications needing factory-set voltages and wafer-level packaging.
FAQ
What is the output voltage tolerance and temperature range for MAX38902DANT12+T?
The MAX38902DANT12+T delivers a factory-trimmed 1.2V output with ±1% DC accuracy over load (0.1–500mA), line (VIN = VOUT + 0.3V to 5.5V), and temperature (-40°C to +125°C). This specification is guaranteed by design and characterization, with production testing performed at +25°C. The MAX38902DANT12+T maintains this accuracy without external components or calibration.
Does MAX38902DANT12+T require external feedback resistors to set its output voltage?
No. The MAX38902DANT12+T is factory-programmed to 1.2V and contains no external feedback pins (FB or OUTS is used only for remote sensing, not voltage setting). Unlike the MAX38902B/C variants, it eliminates the need for resistor dividers, saving board space and avoiding resistor tolerance-induced errors. The MAX38902DANT12+T uses internal trimming to achieve its specified output voltage.
What is the purpose of the OUTS pin on MAX38902DANT12+T, and how should it be connected?
The OUTS pin on MAX38902DANT12+T is the output voltage sense terminal, designed for Kelvin connection to the load's power entry point. It compensates for voltage drop across PCB traces between the LDO output and the load, ensuring regulation accuracy at the point of use. For best results, connect OUTS directly to the load-side of the output capacitor or to the load's VCC pin using a dedicated trace - never leave it floating or tie it to OUT.
How does the active discharge function work on MAX38902DANT12+T, and what is its resistance value?
When the EN pin is pulled low, the MAX38902DANT12+T activates an internal 800Ω resistor between the OUT pin and GND. This provides a controlled discharge path for output capacitors, reducing discharge time from tens of milliseconds to under 1ms for typical 4.7µF loads. This feature enables deterministic power-down sequencing in multi-rail systems and prevents unintended back-powering of upstream circuitry.
Can MAX38902DANT12+T operate with a 2.0V input voltage while delivering 1.2V at 500mA?
No. At 500mA load, the MAX38902DANT12+T requires a minimum input voltage of VOUT + dropout. Its maximum dropout is 100mV at 3.6VIN, but rises to 300mV at 1.7VIN. With 1.2V output, a 2.0V input yields only 0.8V headroom - sufficient for light loads, but insufficient for 500mA. For 500mA operation, VIN must be ≥1.5V (per datasheet dropout curves), and ≥1.7V is recommended for guaranteed performance across temperature.
MAX38902DANT12+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):
- 1.2V
- 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)
MAX38902DANT12+T FAQ
1.How can I place an order for MAX38902DANT12+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX38902DANT12+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 MAX38902DANT12+T reliable?
The price and inventory of MAX38902DANT12+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX38902DANT12+T is usually 5 days.
3.What payment methods are accepted for MAX38902DANT12+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX38902DANT12+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX38902DANT12+T?
MAX38902DANT12+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX38902DANT12+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 MAX38902DANT12+T?
For technical support, including MAX38902DANT12+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX38902DANT12+T requirements.
6.How does Aetrix verify that MAX38902DANT12+T is sourced from the original manufacturer or authorized distributors?
All MAX38902DANT12+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 MAX38902DANT12+T meets industry standards.
7.What is the process for return or replacement of MAX38902DANT12+T?
All MAX38902DANT12+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX38902DANT12+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 MAX38902DANT12+T part is unused and in its original packaging.
Return procedure for MAX38902DANT12+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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