ADP7104ARDZ-1.5-R7

20 V，500 mA时，低噪声， CMOS LDO 20 V, 500 mA, Low Noise, CMOS LDO

Product Details

The ADP7104 is a CMOS, low dropout linear regulator that operates from 3.3 V to 20 V and provides up to 500 mA of output current. This high input voltage LDO is ideal for regulation of high performance analog and mixed signal circuits operating from 19 V to 1.22 V rails. Using an advanced proprietary architecture, it provides high power supply rejection, low noise, and achieves excellent line and load transient response with just a small 1 μF ceramic output capacitor.

The ADP7104 is available in seven fixed output voltage options and an adjustable version, which allows output voltages that range from 1.22 V to VIN − VDO via an external feedback divider.

The ADP7104 output noise voltage is 15 μV rms and is independent of the output voltage. A digital power-good output allows power system monitors to check the health of the output voltage. A user programmable precision undervoltage lockout function facilitates sequencing of multiple power supplies.

The ADP7104 is available in 8-lead, 3 mm × 3 mm LFCSP and 8-lead SOIC packages. The LFCSP offers a very compact solution and also provides excellent thermal performance for applications requiring up to 500 mA of output current in a small, low-profile footprint.

**APPLICATIONS**

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Regulation to noise sensitive applications:

ADC, DAC circuits, precision amplifiers, high frequency oscillators, clocks and PLLs

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Communications and Infrastructure

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Medical and Healthcare

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Industrial and Instrumentation

### Features and Benefits

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Input voltage range:

3.3 V to 20 V

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Maximum output current:

500 mA

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Low Noise: 15 μVRMS for fixed output versions

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PSRR Performance of 60 dB @ 10 kHz at VOUT=3.3 V

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Reverse current protection

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Low dropout voltage:

350 mV at 500 mA

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Initial accuracy: ±0.8%

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See data sheet for additional features