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The ADPL42005ARDZ-1.8LDO linear regulator is specifically designed for high-performance analog and mixed-signal circuits with an operating voltage range of 19V to 1.22V. Its operating voltage ranges from 4V to 20V and it can provide an output current of up to 500mA. The ADPL42005ARDZ-1.8 offers six fixed output voltage options and an adjustable version. Through an external feedback voltage divider, the output voltage range can be adjusted from 1.22V to VIN − VDO.

Main features

Input voltage range: 4V to 20V

Maximum output current of 500 mA

The fixed output version features low noise: 32μVrms

PSRR performance: 58dB (at 10kHz and VOUT=3.3V)

Reverse current protection

Low pressure difference: 400mV (at 500mA)

Initial accuracy: ±0.8%

Accuracy across the entire line, load and temperature range: -2% to +1% (TJ = -40 °C to 125°C)

Return current limiting and thermal overload protection

Low quiescent current IGND: 900μA (when VIN =10V and load =500mA)

Low turn-off current: <40μA (when VIN =12V), stable operation can be achieved when paired with a 1μF small ceramic output capacitor

Six fixed output voltage options: 1.5V, 1.8V, 2.5V, 3V, 3.3V and 5V

Adjustable output: 1.22V to VIN−VDO

User-programmable precision UVLO/ enable

Good power supply indicator light

8-lead LFCSP and 8-lead SOIC packages

In addition, the ADPL42005ARDZ-1.8 voltage regulator features multiple protection functions, including reverse current protection, return current limiting, and thermal overload protection. Typical applications of this voltage regulator include high-frequency oscillators, clocks, communications and infrastructure, healthcare, as well as industry and instrumentation.

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