ADM7155ACPZ-01-R7

LDO Regulator Pos 1.2V to 1.8V 0.6A 8Pin LFCSP EP T/R

Product Details

The ADM7155 is an adjustable linear regulator that operates from 2.3 V to 5.5 V and provides up to 600 mA of load current. Output voltages from 1.2 V to 3.4 V are possible depending on the model. Using an advanced proprietary architecture, it provides high power supply rejection and ultralow noise, achieving excellent line and load transient response with only a 10 µF ceramic output capacitor.

The ADM7155 is available in four models that optimize power dissipation and PSRR performance as a function of input and output voltage.

The ADM7155 regulator typical output noise is 0.9 μV rms from 100 Hz to 100 kHz for fixed output voltage options and 1.5 nV/√Hz for noise spectral density from 10 kHz to 1 MHz. The ADM7155 is available in 8-lead, 3 mm × 3 mm LFCSP and 8-lead SOIC packages, making it not only a very compact solution but also providing excellent thermal performance for applications requiring up to 600 mA of load current in a small, low profile footprint.

**Applications**

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Regulation to noise sensitive applications: PLLs, VCOs, and PLLs with integrated VCOs

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Communications and infrastructure

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Backhaul and microwave links

### Features and Benefits

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Input voltage range: 2.3 V to 5.5 V

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Output voltage range: 1.2 V to 3.4 V

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Maximum load current: 600 mA

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Low noise

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0.9 μV rms total integrated noise from 100 Hz to 100 kHz

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1.6 μV rms total integrated noise from 10 Hz to 100 kHz

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Noise spectral density: 1.5 nV/√Hz from 10 kHz to 1 MHz

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PSRR: >90 dB from 200 Hz to 200 kHz; 57 dB at 1 MHz

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Dropout voltage: 120 mV typical at VOUT = 3.3 V, IOUT = 600 mA

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Initial accuracy: ±0.5%

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Accuracy over line, load, and temperature: −2.0% minimum, +1.5% maximum

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Quiescent current, IGND = 4 mA at no load

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Low shutdown current: 0.2 μA

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Stable with a 10 μF ceramic output capacitor

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8-lead LFCSP and 8-lead SOIC packages

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Precision enable

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Supported by simPower tool