Overview
The ADP7118ACPZN5.0-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 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 ADP7118 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 |
| Maximum Output Current | 200 mA |
| Output Voltage Options | Fixed: 1.2 V, 1.8 V, 2.5 V, 3.3 V, 4.5 V, 5.0 V; Adjustable above initial set point |
| 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% |
| Dropout Voltage | VIN - VOUT |
| 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 power supply rejection ratio (PSRR)
- Excellent line and load transient response with a small 2.2 µF ceramic output capacitor
- User-programmable soft start with an external capacitor
- Compact package options for low-profile applications
- Adjustable output voltage above the initial set point using an external feedback divider
- Supported by ADIsimPower tool for design and simulation
Applications
- Communications and infrastructure
- Medical and healthcare devices
- Industrial and instrumentation systems
- Analog and mixed-signal circuits requiring high performance and low noise
- VCO VTUNE control in precision amplifiers and power systems
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 are the available output voltage options for the ADP7118?
The ADP7118 is available in fixed output voltage options of 1.2 V, 1.8 V, 2.5 V, 3.3 V, 4.5 V, and 5.0 V, and can be adjusted above the initial set point using an external feedback divider. - What is the output noise of the ADP7118?
The output noise of the ADP7118 is 11 µV rms for fixed output voltages ≤ 5 V. - What is the PSRR of the ADP7118?
The PSRR of the ADP7118 is 88 dB at 10 kHz, 68 dB at 100 kHz, and 50 dB at 1 MHz (VOUT ≤ 5 V, VIN = 7 V). - What are the package options available for the ADP7118?
The ADP7118 is available in 6-lead LFCSP, 5-lead TSOT, and 8-lead SOIC packages. - How can the soft start time of the ADP7118 be adjusted?
The soft start time of the ADP7118 can be adjusted using an external capacitor connected to the SS pin. - What are some typical applications of the ADP7118?
The ADP7118 is typically used in communications and infrastructure, medical and healthcare devices, industrial and instrumentation systems, and in analog and mixed-signal circuits requiring high performance and low noise. - Is the ADP7118 supported by any design tools?
Yes, the ADP7118 is supported by the ADIsimPower tool for design and simulation. - How does the ADP7118 handle line and load transient response?
The ADP7118 achieves excellent line and load transient response with a small 2.2 µF ceramic output capacitor.
