Overview
The ADP7118ACPZN3.3-R7 is a CMOS, low dropout (LDO) linear regulator produced by Analog Devices Inc. This regulator operates from an input voltage range of 2.7 V to 20 V and provides up to 200 mA of output current. It is designed for high-performance analog and mixed-signal circuits, offering excellent power supply rejection ratio (PSRR), low noise, and robust transient response. The device is available in various package options, including a 6-lead, 2 mm × 2 mm LFCSP, a 5-lead TSOT, and an 8-lead SOIC, making it suitable for compact and low-profile applications.
Key Specifications
| Parameter | Value |
|---|---|
| Input Voltage Range | 2.7 V to 20 V |
| Output Voltage | 3.3 V (fixed), adjustable with external feedback divider |
| Maximum Output Current | 200 mA |
| Output Noise | 11 µV rms (for fixed output voltage ≤ 5 V) |
| 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 |
| Soft Start Time | Approximately 380 µs (typical), adjustable with external capacitor |
Key Features
- Low noise: 11 µV rms independent of fixed output voltage
- High PSRR: 88 dB at 10 kHz, 68 dB at 100 kHz, 50 dB at 1 MHz
- High accuracy: ±0.8% initial accuracy over line, load, and temperature
- Adjustable output voltage using an external feedback divider
- User-programmable soft start with an external capacitor
- Compact package options: 6-lead LFCSP, 5-lead TSOT, 8-lead SOIC
- Excellent thermal performance and transient response
Applications
- High-performance analog and mixed-signal circuits
- Communications and infrastructure
- Medical and healthcare devices
- Industrial and instrumentation applications
- VCO VTUNE control and precision amplifiers
Q & A
- What is the input voltage range of the ADP7118?
The input voltage range of the ADP7118 is from 2.7 V to 20 V. - What is the maximum output current of the ADP7118?
The maximum output current of the ADP7118 is 200 mA. - What is the output noise of the ADP7118?
The output noise of the ADP7118 is 11 µV rms for fixed output voltages ≤ 5 V. - How can the output voltage be adjusted?
The output voltage can be adjusted using an external feedback divider. - What are the package options for the ADP7118?
The package options include a 6-lead LFCSP, a 5-lead TSOT, and an 8-lead SOIC. - What is the typical soft start time of the ADP7118?
The typical soft start time is approximately 380 µs, but it can be adjusted with an external capacitor. - What are some common applications of the ADP7118?
Common applications include high-performance analog and mixed-signal circuits, communications and infrastructure, medical and healthcare devices, and industrial and instrumentation applications. - How does the ADP7118 achieve high PSRR?
The ADP7118 achieves high PSRR through its advanced proprietary architecture. - Can the ADP7118 be used in automotive applications?
Yes, the ADP7118 is qualified for automotive applications. - What tool supports the ADP7118 for design and simulation?
The ADP7118 is supported by the ADIsimPower tool.
