Overview
The ADP7142ARDZ-2.5-R7, produced by Analog Devices Inc., is a CMOS, low dropout (LDO) linear regulator. This device operates from an input voltage range of 2.7 V to 40 V and provides up to 200 mA of output current. It is designed to regulate high-performance analog and mixed signal circuits, making it ideal for applications requiring low noise and high power supply rejection ratio (PSRR). The ADP7142 features an advanced proprietary architecture that ensures excellent line and load transient response, even with small 2.2 µF ceramic output capacitors.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Input Voltage Range | VIN | 2.7 | 40 | V | |
| Output Current | IOUT | 200 | mA | ||
| Output Voltage Accuracy | VOUT | -0.8% | +0.8% | % | |
| Power Supply Rejection Ratio (PSRR) | 88 dB @ 10 kHz | 68 dB @ 100 kHz | 50 dB @ 1 MHz | dB | |
| Output Noise | 11 µV rms | µV | |||
| Shutdown Current | IGND-SD | 1.8 | 10 | µA | |
| Operating Supply Current | IGND | 50 | 140 | 320 | µA |
Key Features
- Low noise: 11 µV rms independent of the fixed output voltage.
- High power supply rejection ratio (PSRR): 88 dB at 10 kHz, 68 dB at 100 kHz, and 50 dB at 1 MHz.
- Wide input voltage range: 2.7 V to 40 V.
- Maximum output current: Up to 200 mA.
- High accuracy: ±0.8% output voltage accuracy.
- User programmable soft start with an external capacitor available in LFCSP and SOIC packages.
- Available in 15 fixed output voltage options, ranging from 1.2 V to 5.0 V, with the ability to adjust the output voltage using an external feedback divider.
- Compact packages: 6-lead LFCSP, 5-lead TSOT, and 8-lead SOIC.
- RoHS compliant (lead free).
Applications
- Communications and infrastructure.
- Medical and healthcare devices.
- Industrial and instrumentation equipment.
- Automotive systems, including body electronics and lights.
- High-performance analog and mixed signal circuits.
Q & A
- What is the input voltage range of the ADP7142?
The ADP7142 operates from an input voltage range of 2.7 V to 40 V.
- What is the maximum output current of the ADP7142?
The ADP7142 can provide up to 200 mA of output current.
- What is the output noise of the ADP7142?
The output noise of the ADP7142 is 11 µV rms independent of the output voltage for fixed options of 5 V or less.
- How many fixed output voltage options are available for the ADP7142?
The ADP7142 is available in 15 fixed output voltage options, ranging from 1.2 V to 5.0 V.
- Can the output voltage of the ADP7142 be adjusted?
- What are the available packages for the ADP7142?
The ADP7142 is available in 6-lead LFCSP, 5-lead TSOT, and 8-lead SOIC packages.
- Is the ADP7142 RoHS compliant?
- What is the typical shutdown current consumption of the ADP7142?
The typical shutdown current consumption is less than 3 µA at room temperature.
- What is the power supply rejection ratio (PSRR) of the ADP7142?
The PSRR is 88 dB at 10 kHz, 68 dB at 100 kHz, and 50 dB at 1 MHz.
- What are some common applications of the ADP7142?
