低压差稳压器 3.3/5Vin 1.2A Ultra Low Noise LDO, Fixed
Product Details
The ADP7156 is a linear regulator that operates from 2.3 V to 5.5 V and provides up to 1.2 A of output current. 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.
There are 16 standard output voltages for the ADP7156. The following voltages are available from stock: 1.2 V, 1.8 V, 2.0 V, 2.5 V, 2.8 V, 3.0 V and 3.3 V. Additional voltages available by special order are 1.3 V, 1.5 V, 1.6 V, 2.2 V, 2.6 V, 2.7 V, 2.9 V, 3.1 V, and 3.2 V.
The ADP7156 regulator typical output noise 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 ADP7156 is available in a 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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- 16 standard voltages between 1.2 V and 3.3 V available
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- Maximum load current: 1.2 A
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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: 1.7 nV/√Hz from 10 kHz to 1 MHz
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- Power supply rejection ratio PSRR
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- 80 dB from 1 kHz to 100 kHz; 60 dB at 1 MHz, VOUT = 3.3 V, VIN = 4.0 V
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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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- Initial accuracy over line, load, and temperature: ±1.5%
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- Quiescent current: IGND = 4.0 mA at no load, 7 mA at 1.2 A
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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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- 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
