company blog about MAX38902 Low-Noise LDO for Noise-Sensitive Loads—Available in Stock from Mingjiada Electronics

In audio systems, communication circuits, and high-resolution data acquisition designs, power supply noise is often a key bottleneck that limits signal-to-noise ratio and accuracy. Analog Devices (ADI/Maxim)’s MAX38902 series of low-noise LDO linear regulators, with ultra-low output noise of 12 μV rms and a 500 mA output capability, is the preferred choice for noise-sensitive loads. As a long-standing stock supplier specializing in the ADI/Maxim product line, Mingjiada Electronics currently maintains genuine stock of multiple MAX38902 variants, supporting rapid delivery for both small-batch samples and bulk purchases.

I. What Is the MAX38902: A Low-Noise LDO for Noise-Sensitive Loads

The MAX38902 is a low-noise, low-dropout linear regulator (LDO) introduced by ADI/Maxim. It features output noise as low as 12 μV rms within a bandwidth of 10 Hz to 100 kHz and can deliver an output current of up to 500 mA. This series includes multiple sub-models—A, B, C, D, and E—which differ in output voltage setting methods, package types, and certain electrical parameters, covering a wide range of design requirements from fixed-voltage to resistor-adjustable voltage applications.

II. MAX38902 Key Specifications

- Input voltage range: 1.7 V to 5.5 V

- Output voltage range: 0.6 V to 5.3 V

- Maximum output current: 500 mA

- Output noise: 10.5 μVrms (10 Hz to 100 kHz)

- Power supply rejection ratio: 70 dB (10 kHz)

- DC accuracy: ±1% (over load, input, and temperature variations)

- Full-load dropout voltage: 100 mV (maximum, 500 mA load, 3.6 V input)

- No-load current: 365 μA (typical)

- Shutdown current: Less than 0.1 μA

- Output capacitance requirement: Minimum 2 μF; 4.7 μF low-ESR capacitor recommended

- Output active discharge: 800 Ω

- Soft-start rate: Programmable via an external capacitor connected to the BYP pin

- Protection features: Overcurrent protection, over-temperature protection, and protection against reverse current from output to input

- Package options: 2 mm × 2 mm 8-pin TDFN; 1.22 mm × 0.82 mm, 2×3 bumps, 0.4 mm pitch WLP

- Operating Temperature Range: -40°C to +125°C

- Package Compatibility: The TDFN version is pin-compatible with the MAX8902

III. Typical Applications for the MAX38902

① High-Resolution Data Acquisition Systems

The reference voltage or analog power supply of ADCs/DACs is extremely sensitive to power supply ripple. The MAX38902’s 12 μV rms noise level and 70 dB (10 kHz) PSRR effectively suppress switching ripple introduced by upstream DC-DC converters, providing a “clean” supply rail for high-bit-count data converters.

② Audio Systems

Audio codecs, operational amplifiers, and microphone bias circuits have very low tolerance for power supply noise. The MAX38902’s low output noise and ±1% DC accuracy help reduce background noise and improve dynamic range, making it a proven solution in portable audio devices and professional audio modules.

③ Communication Circuits

RF front-ends, PLLs/VCOs, and high-speed SerDes have specific requirements for power supply rejection ratio (PSRR). The MAX38902 maintains 45 dB PSRR at 100 kHz (E-type) and, combined with its 100 mV low dropout voltage, balances noise performance and voltage headroom in battery-powered communication modules.

IV. Advantages of Mingjiada Electronics’ In-Stock Supply of the MAX38902

Genuine, Traceable Products

The MAX38902 series supplied by Mingjiada Electronics comes directly from ADI/Maxim’s official channels. We support verification of part numbers, batch numbers, and packaging to ensure no refurbished or mixed-lot products are included.

Comprehensive Stock Coverage of Multiple Models

Our regular inventory includes popular models such as the MAX38902CANT (6-WLP), MAX38902EATA (8-TDFN), and MAX38902BATA+T (8-TDFN), covering adjustable-output, fixed-output, and various packaging requirements, thereby reducing the communication costs associated with customers having to place combined orders across multiple suppliers.

Short Lead Times and Flexible Minimum Order Quantities

Leveraging supply chain resources from Shenzhen’s electronics component hub, Mingjiada offers 1–3-day delivery for standard MAX38902 models. We support tiered supply ranging from small batches for R&D prototyping to mass production volumes, helping customers shorten procurement cycles and reduce the risk of production line delays due to component shortages.

About Mingjiada Electronics: Shenzhen Mingjiada Electronics Co., Ltd. has long specialized in the spot supply of analog and power management devices from brands such as ADI, Maxim, and TI, covering categories including LDOs, switching power supplies, data converters, and interface chips. We serve R&D and mass production customers with genuine, original products, fast delivery, and product selection support.

Tags: MAX38902CANT, MAX38902CAN, MAX38902CA, MAX38902C, MAX38902