Overview
Features and Benefits
- Low noise: 11 μV rms independent of fixed output voltage
- PSRR of 88 dB at 10 kHz, 68 dB at 100 kHz, 50 dB at 1 MHz, VOUT ≤ 5 V, VIN = 7 V
- Input voltage range: 2.7 V to 40 V
- Maximum output current: 200 mA
- Initial accuracy: ±0.8%
- Accuracy over line, load, and temperature
- −1.2% to +1.5%, TJ = −40°C to +85°C
- ±1.8%, TJ = −40°C to +125°C
- Low dropout voltage: 200 mV (typical) at a 200 mA load, VOUT = 5 V
- User programmable soft start (LFCSP and SOIC only)
- Low quiescent current, IGND = 50 μA (typical) with no load
- Low shutdown current: 1.8 μA at VIN = 6 V, 3.0 μA at VIN = 40 V
- Stable with a small 2.2 μF ceramic output capacitor
- Fixed output voltage options: 1.8 V, 2.5 V, 3.3 V, 3.8 V, and 5.0 V
- 15 standard voltages between 1.2 V and 5.0 V are available
- Adjustable output from 1.2 V to VIN – VDO, output can be adjusted above initial set point
- Precision enable
- 2 mm × 2 mm, 6-lead LFCSP, 8-Lead SOIC, 5-Lead TSOT
- AEC-Q100 qualified for automotive applications
Product Details
The ADP7142 is a CMOS, low dropout (LDO) linear regulator that operates from 2.7 V to 40 V and provides up to 200 mA of output current. This high input voltage LDO is ideal for the regulation of high performance analog and mixed signal circuits operating from 39 V down to 1.2 V rails. Using an advanced proprietary architecture, the device provides high power supply rejection, low noise, and achieves excellent line and load transient response with a small 2.2 μF ceramic output capacitor. The ADP7142 regulator output noise is 11 μV rms independent of the output voltage for the fixed options of 5 V or less.
The ADP7142 is available in 15 fixed output voltage options. The following voltages are available from stock: 1.2 V (adjustable), 1.8 V, 2.5 V, 3.3 V, 3.8 V, and 5.0 V. Additional voltages available by special order are 1.5 V, 1.85 V, 2.0 V, 2.2 V, 2.75 V, 2.8 V, 2.85 V, 3.0 V, 4.2 V, and 4.6 V.
Each fixed output voltage can be adjusted above the initial set point with an external feedback divider. This allows the ADP7142 to provide an output voltage from 1.2 V to VIN − VDO with high PSRR and low noise.
User programmable soft start with an external capacitor is available in the LFCSP and SOIC packages.
The ADP7142 is available in a 6-lead, 2 mm × 2 mm LFCSP making it not only a very compact solution, but it also provides excellent thermal performance for applications requiring up to 200 mA of output current in a small, low profile footprint. The ADP7142 is also available in a 5-lead TSOT and an 8-lead SOIC.
APPLICATIONS
- Regulation to noise sensitive applications
- ADC, DAC circuits, precision amplifiers, power for VCO VTUNE control
- Communications and infrastructure
- Medical and healthcare
- Industrial and instrumentation
- Automotive
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Recommended for New Designs
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
Evaluation Kits (3)
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LTspice
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ADP7142
ADP7142-1.8
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ADP7142-3.3
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ADP7142 Discussions
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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.