Overview
The ADP7142ACPZN2.5-R7 is a CMOS, low dropout (LDO) linear regulator produced by Analog Devices Inc. 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 for the regulation of high-performance analog and mixed-signal circuits, offering high power supply rejection, low noise, and excellent line and load transient response. The ADP7142 is particularly suitable for applications requiring a compact, low-profile solution with high thermal performance.
Key Specifications
| Parameter | Value |
|---|---|
| Input Voltage Range | 2.7 V to 40 V |
| Maximum Output Current | 200 mA |
| Output Voltage Options | Fixed: 1.2 V, 1.8 V, 2.5 V, 3.3 V, 3.8 V, 5.0 V; Adjustable: 1.2 V to VIN - VDO |
| Output Noise | 11 μV rms (for fixed options ≤ 5 V) |
| Power Supply Rejection Ratio (PSRR) | 88 dB at 10 kHz, 68 dB at 100 kHz, 50 dB at 1 MHz (VOUT ≤ 5 V, VIN = 7 V) |
| Initial Accuracy | ±0.8% |
| Package Options | 6-lead LFCSP, 5-lead TSOT, 8-lead SOIC |
| Shutdown Current Consumption | < 3 μA at room temperature |
Key Features
- High power supply rejection ratio (PSRR) and low noise
- Excellent line and load transient response with a small 2.2 μF ceramic output capacitor
- User-programmable soft start with an external capacitor (available in LFCSP and SOIC packages)
- Adjustable output voltage using an external feedback divider
- Compact and low-profile design with excellent thermal performance
- Short-circuit and thermal protection
- Low shutdown current consumption
Applications
- Communications and infrastructure
- Medical and healthcare
- Industrial and instrumentation
- Automotive
- Precision amplifiers and power for VCO VTUNE control
- High-performance analog and mixed-signal circuits
Q & A
- What is the input voltage range of the ADP7142?
The input voltage range of the ADP7142 is from 2.7 V to 40 V.
- What is the maximum output current of the ADP7142?
The maximum output current of the ADP7142 is 200 mA.
- What are the available output voltage options for the ADP7142?
The ADP7142 is available in fixed output voltage options of 1.2 V, 1.8 V, 2.5 V, 3.3 V, 3.8 V, and 5.0 V. Additional voltages are available by special order, and the output voltage can be adjusted using an external feedback divider.
- What is the output noise of the ADP7142?
The output noise of the ADP7142 is 11 μV rms for fixed output voltage options of 5 V or less.
- What is the power supply rejection ratio (PSRR) of the ADP7142?
The PSRR of the ADP7142 is 88 dB at 10 kHz, 68 dB at 100 kHz, and 50 dB at 1 MHz (VOUT ≤ 5 V, VIN = 7 V).
- How can the output voltage of the ADP7142 be adjusted?
The output voltage can be adjusted using an external feedback divider. For example, a fixed 5 V output can be set to a 6 V output using the equation VOUT = 5 V (1 + R1/R2).
- What are the package options for the ADP7142?
The ADP7142 is available in 6-lead LFCSP, 5-lead TSOT, and 8-lead SOIC packages.
- Does the ADP7142 have short-circuit and thermal protection?
- What is the shutdown current consumption of the ADP7142?
The shutdown current consumption of the ADP7142 is less than 3 μA at room temperature.
- In which applications is the ADP7142 commonly used?
The ADP7142 is commonly used in communications and infrastructure, medical and healthcare, industrial and instrumentation, automotive, and high-performance analog and mixed-signal circuits.
