ADP7157ACPZ-03-R7
LDO Regulator Pos 1.2V to 2.9V 1.2A 10Pin LFCSP T/R
Product Details
The ADP7157 is an adjustable linear regulator that operates from 2.3 V to 5.5 V and provides up to 1.2 A of output current. Output voltages from 1.2 V to 3.3 V are possible depending on the model. Using an advanced proprietary architecture, the device provides high power supply rejection and ultralow noise, achieving excellent line and load transient response with only a 10 μF ceramic output capacitor.
The ADP7157 is available in four models that optimize power dissipation and PSRR performance as a function of the input and output voltage.
The typical output noise the ADP7157 regulator is 0.9 μV rms from 100 Hz to 100 kHz and 1.7 nV/√Hz for noise spectral density from 10 kHz to 1 MHz. The ADP7157 is available in 10-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 1.2 A of output current in a small, low profile footprint.
Applications
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- Regulation to noise sensitive applications: phase-locked loops PLLs, voltage controlled oscillators 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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- Adjustable output voltage range VOUT: 1.2 V to 3.3 V
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- Maximum load current: 1.2 A
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- Low noise
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- 0.9 µV rms typical output noise from 100 Hz to 100 kHz
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- 1.6 µV rms typical output noise from 10 Hz to 100 kHz
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- Noise spectral density: 1.7 nV/√Hz from 10 kHz to 1 MHz
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- Power supply rejection ratio PSRR
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- 82 dB from 1 kHz to 100 kHz
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- 55 dB at 1 MHz
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- Dropout voltage: 120 mV typical at IOUT = 1.2 A, VOUT = 3.3 V
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- Initial accuracy: ±0.6% at ILOAD = 10 mA
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- Accuracy over line, load, and temperature: ±1.5%
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- Operating supply current IGND
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- 4.0 mA typical at 0 µA
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- 7.0 mA typical at 1.2 A
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- Low shutdown current: 0.2 μA typical
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- Stable with a 10 µF ceramic output capacitor
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- 10-lead, 3 mm × 3 mm LFCSP and 8-lead SOIC packages
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- Precision enable
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- Supported by simPower tool