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Home › Manufacturer › Diodes Corporation introduces high-current, high-precision LDO to meet the needs of noise-sensitive power conversion applications
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Diodes Corporation introduces high-current, high-precision LDO to meet the needs of noise-sensitive power conversion applications

SemiMediaEdit
September 12, 2023

September 12, 2023 /SemiMedia/ -- Diodes Corporation recently released a 3A-rated low-dropout (LDO) voltage regulator supporting 4.4µVRMS operation (at 0.8V output). Delivering a clean supply, the AP7179D is highly optimized for powering noise-sensitive components - such as the high-performance SerDes, RF components, and data converters needed for high-speed communications, test and measurement, medical, and video applications. Remote radio units (RRUs), outdoor backhaul units, mMIMO active antenna systems, ultrasound scanners, radar systems, and lab/field instrumentation are among the types of hardware into which it can be incorporated.

The AP7179D has a ±1% output accuracy across line, load, and temperature. This device’s 180mV (maximum) dropout voltage at a 3A load current supports a wide voltage conversion range. Its low-noise reference and error amplifier enables a minimal noise floor. In addition, its 40dB power supply rejection ratio (PSRR) at 500kHz substantially lowers the coupling of input supply noise to the output.

There are two output voltage selection modes for this LDO: pin-programmable between 0.8V and 3.95V, or adjustable using an external resistor divider from 0.8V to 5.5V. The resulting flexibility significantly reduces the number of accompanying components needed.

The device’s low output noise mitigates both power-supply-generated phase noise and clock jitter. Because of this, alongside its high-current capabilities, this device is compatible with high-performance processors, such as FPGAs, ASICs, and DSPs.

The AP7179D is housed in a compact 20-pin W-QFN3535 (Type A1) package, and it is available at $0.70 in 1,000 unit quantities. For more information, please visit https://www.diodes.com/part/view/AP7179D/.

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