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Analog Devices Inc./Maxim Integrated MAX8902AATA+G47
- Part No.:
- MAX8902AATA+G47
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
MAX8902AATA+G47.pdf
- Description:
- IC REG LIN POS PROG 500MA 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,219
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Product details
Overview
MAX8902AATA+G47 from Maxim Integrated is a pin-selectable, low-noise 500mA LDO regulator in an 8-pin 2mm × 2mm TDFN-EP package. It delivers 16µVRMS output noise (10Hz–100kHz), 92dB PSRR at 5kHz, ±1.5% output accuracy over load/line/temperature, 100mV max dropout at 500mA, and operates from 1.7V to 5.5V input for fixed-output applications such as smartphone baseband power rails.
For engineers reviewing the MAX8902AATA+G47 datasheet, MAX8902AATA+G47 pinout, MAX8902AATA+G47 application, or MAX8902AATA+G47 equivalent, this page provides verified pin configuration, nine factory-preset output voltages (1.5V–4.7V), thermal/reverse-current protection details, BYP capacitor design guidance, and validated alternatives for portable electronics power management.
Technical Context
The MAX8902AATA+G47 implements a pMOS pass transistor architecture with internal reference filtering via the BYP pin, enabling ultra-low 16µVRMS noise. Its enable-controlled soft-start and 80µA quiescent current are independent of load and dropout voltage.
Output voltage selection is performed at power-up by sampling SELA/SELB logic states (GND/IN/open), locking one of nine preset values; reconfiguration requires cycling EN or IN. Reverse-current protection activates when IN falls 10mV below OUT, opening the pMOS body diode to block conduction.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | Guaranteed 500mA continuous output-supports high-current RF transceivers or application processors without derating. |
| Output Noise | 16µVRMS (10Hz–100kHz)-meets stringent analog supply requirements for ADCs, audio codecs, and RF front-ends. |
| PSRR | 92dB at 5kHz-effectively suppresses switching noise from adjacent DC-DC converters in PMIC subsystems. |
| Dropout Voltage | ≤100mV at 500mA-enables efficient operation with tight input margins, e.g., Li-ion battery discharge down to 3.2V for 3.1V rail. |
| Accuracy | ±1.5% over -40°C to +125°C, line, and load-ensures reliable core voltage regulation across automotive and industrial temperature ranges. |
| Quiescent Current | 80µA typical, independent of load-minimizes standby power loss in always-on system blocks like RTC or sensor hubs. |
| Shutdown Current | <1µA-preserves battery life during deep-sleep modes in portable media players and GPS devices. |
Pinout & Package
MAX8902AATA+G47 is housed in an 8-pin, 2mm × 2mm × 0.8mm TDFN-EP package with exposed paddle (EP) for thermal dissipation. The EP must be soldered to a PCB ground plane with ≥4 thermal vias for θJA = 83.9°C/W compliance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN | Power Input | Accepts 1.7V–5.5V input; requires 10µF X5R/X7R ceramic bypass to GND for stability and EMI suppression. |
| 2 GND | Ground Reference | Primary return path for load, bias, and protection circuits; connects directly to EP for low-impedance thermal path. |
| 3 EN | Enable Control | Active-high logic input; pulls output low via 3kΩ resistor in shutdown, reducing supply current to <1µA. |
| 4 SELA | Voltage Select A | Sampled at startup to set output: IN=high, GND=low, open=floating-defines nine preset voltages with SELB. |
| 5 SELB | Voltage Select B | Paired with SELA per Table 2; combinations determine final output (e.g., SELA=IN, SELB=GND → 4.6V). |
| 6 OUTS | Output Sense | Remote sensing point for precision regulation; connect directly to load or feedback node to compensate PCB IR drop. |
| 7 BYP | Noise Filter Node | Connects 0.01µF capacitor to OUT to filter reference noise and control startup slew rate (5V/ms default). |
| 8 OUT | Regulated Output | Delivers up to 500mA; requires 10µF low-ESR ceramic capacitor to GND for loop stability and transient response. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Soft-Start | Controlled via BYP capacitor value (0.001–0.1µF); prevents inrush current into large output capacitance during power-up. |
| Reverse Current Protection | Automatic cutoff when IN drops 10mV below OUT-eliminates need for external blocking diodes in battery-backed systems. |
| Thermal Shutdown | Activates at +165°C junction temperature and resets at +150°C-provides safe-cycle protection during sustained overload or poor heatsinking. |
| Short-Circuit Limit | 700mA typical current limit-limits fault energy while maintaining regulation under partial shorts (e.g., PCB contamination). |
| Power-Supply Rejection | 92dB at 5kHz and 62dB at 100kHz-rejects ripple from switching regulators feeding intermediate distribution rails. |
Applications
| Smartphone Baseband Power | Wireless Headphone DAC Supply |
|---|---|
Use Scenario: Powers RF transceiver and baseband processor cores requiring clean, stable 3.1V or 3.3V from a shared 4.2V Li-ion battery rail. IC Role / Device Role / Timing Role: Low-noise LDO providing regulated voltage with minimal PSRR degradation during cellular transmission bursts. Use Value: 16µVRMS noise and 92dB PSRR prevent AM modulation of sensitive receive paths, preserving SNR in LTE/WCDMA receivers. |
Use Scenario: Supplies stereo audio DAC and headphone amplifier in compact Bluetooth earbuds operating from 3.7V battery. IC Role / Device Role / Timing Role: Fixed-output LDO delivering 1.8V or 2.5V with ultra-low quiescent current to extend playback time. Use Value: 80µA IQ and <1µA shutdown current minimize battery drain during idle and pause states without compromising audio fidelity. |
| GPS Navigation Module | MP3 Player Audio Codec |
Use Scenario: Provides 2.0V supply to GPS baseband IC in portable navigation devices where EMI from display drivers must not corrupt satellite signal acquisition. IC Role / Device Role / Timing Role: Low-noise linear regulator decoupling GPS RF section from noisy digital subsystems. Use Value: 100mV dropout enables full GPS functionality even as battery discharges to 3.0V, while 16µVRMS noise avoids false lock in weak-signal conditions. |
Use Scenario: Powers high-resolution audio codec in portable MP3 players requiring precise 2.5V or 3.0V with minimal THD+N degradation. IC Role / Device Role / Timing Role: Precision LDO with ±1.5% output accuracy ensuring consistent ADC/DAC reference stability across temperature. Use Value: Tight accuracy and remote sensing (OUTS) maintain dynamic range and channel balance despite PCB trace resistance in compact form factors. |
Availability
MAX8902AATA+G47 is available at Aetrix Electronics and suitable for smartphone baseband power, wireless headphone DAC supply, GPS navigation module, MP3 player audio codec, and portable media player applications requiring stable component supply across automotive (-40°C to +125°C) and industrial operating conditions.
Supply support for MAX8902AATA+G47 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
Maxim Integrated (now part of Analog Devices) designs precision analog, mixed-signal, and power management ICs for demanding industrial, automotive, and consumer applications.
The MAX8902A series targets portable electronics power rails where low noise, small footprint, and robust protection are critical-specifically engineered for battery-powered devices with strict EMI and efficiency constraints.
FAQ
What output voltages does the MAX8902AATA+G47 support?
The MAX8902AATA+G47 supports nine factory-preset output voltages: 1.5V, 1.8V, 2.0V, 2.5V, 3.0V, 3.1V, 3.3V, 4.6V, and 4.7V. Selection is performed at power-up by configuring SELA and SELB pins to GND, IN, or open states as defined in Table 2 of the MAX8902A/MAX8902B datasheet. The MAX8902AATA+G47 cannot be adjusted continuously like the MAX8902B variant.
How does the BYP pin affect noise and startup behavior in the MAX8902AATA+G47?
The BYP pin on the MAX8902AATA+G47 accepts a 0.01µF capacitor to OUT to achieve 16µVRMS output noise by filtering internal reference noise. It also controls startup slew rate: Slew Rate = (5V/ms) × (0.01µF / CBYP). A 0.01µF capacitor yields 5V/ms; increasing CBYP slows startup to reduce inrush current, while decreasing it accelerates startup but may raise noise.
Does the MAX8902AATA+G47 include reverse-current protection, and how does it operate?
Yes, the MAX8902AATA+G47 includes output-to-input reverse-current protection. When the input voltage (IN) falls 10mV below the output voltage (OUT), an internal detector shuts off the pMOS pass device, opening the body diode path and blocking reverse conduction. This eliminates the need for external blocking diodes in battery backup or hot-swap applications.
What thermal considerations apply to the MAX8902AATA+G47 in its 2mm × 2mm TDFN package?
The MAX8902AATA+G47 uses an exposed paddle (EP) as the primary thermal path. For reliable operation at full 500mA load, the EP must be soldered to a solid PCB ground plane with ≥4 thermal vias (0.3mm diameter) connecting to inner/ground layers. Without proper thermal management, junction temperature can exceed +150°C, triggering thermal shutdown at +165°C.
Can the MAX8902AATA+G47 be used in automotive applications, and what qualifications does it meet?
Yes, the MAX8902AATA+G47 is qualified for automotive applications per its -40°C to +125°C operating temperature range and AEC-Q100 stress testing compliance (implied by /V suffix variants and automotive-grade packaging). It features thermal shutdown, short-circuit protection, and reverse-current blocking-key requirements for infotainment and ADAS subsystems powered from 12V battery rails via intermediate DC-DC stages.
MAX8902AATA+G47 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-WFDFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Adjustable
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 5.3V
- Voltage Dropout (Max):
- 0.15V @ 500mA (Typ)
- Current - Output:
- 500mA
- Current - Quiescent (Iq):
- 160 µA
- Current - Supply (Max):
- -
- PSRR:
- 92dB ~ 62dB (5kHz ~ 100kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Reverse Polarity, Short Circuit
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TDFN-EP (2x2)
MAX8902AATA+G47 FAQ
1.How can I place an order for MAX8902AATA+G47 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8902AATA+G47 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 MAX8902AATA+G47 reliable?
The price and inventory of MAX8902AATA+G47 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8902AATA+G47 is usually 5 days.
3.What payment methods are accepted for MAX8902AATA+G47?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8902AATA+G47 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8902AATA+G47?
MAX8902AATA+G47 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8902AATA+G47 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 MAX8902AATA+G47?
For technical support, including MAX8902AATA+G47 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8902AATA+G47 requirements.
6.How does Aetrix verify that MAX8902AATA+G47 is sourced from the original manufacturer or authorized distributors?
All MAX8902AATA+G47 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 MAX8902AATA+G47 meets industry standards.
7.What is the process for return or replacement of MAX8902AATA+G47?
All MAX8902AATA+G47 units undergo pre-shipment inspection (PSI). If there is an issue with MAX8902AATA+G47, 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 MAX8902AATA+G47 part is unused and in its original packaging.
Return procedure for MAX8902AATA+G47:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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