Overview
The ADP7118ARDZ-2.5, produced by Analog Devices Inc., is a CMOS, low dropout (LDO) linear regulator designed for high-performance power management applications. 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 particularly suited for regulating high-performance analog and mixed-signal circuits, offering high power supply rejection, low noise, and excellent line and load transient response.
Key Specifications
| Parameter | Value |
|---|---|
| Input Voltage Range | 2.7 V to 20 V |
| Maximum Output Current | 200 mA |
| Output Voltage | Fixed: 2.5 V (adjustable with external feedback divider) |
| Initial Accuracy | ±0.8% |
| Noise (rms) | 11 µV (independent of fixed output voltage ≤ 5 V) |
| Power Supply Rejection Ratio (PSRR) | 88 dB at 10 kHz, 68 dB at 100 kHz, 50 dB at 1 MHz |
| Package | 8-SOIC-EP |
| Soft Start Time | Approximately 380 µs (typical without external capacitor) |
Key Features
- Low noise: 11 µV rms independent of fixed output voltage ≤ 5 V
- High power supply rejection ratio (PSRR): 88 dB at 10 kHz, 68 dB at 100 kHz, 50 dB at 1 MHz
- High accuracy over line, load, and temperature
- User-programmable soft start with an external capacitor
- Compact package options: 6-lead LFCSP, 5-lead TSOT, and 8-lead SOIC
- Excellent thermal performance and low profile footprint
Applications
- Communications and infrastructure
- Medical and healthcare devices
- Industrial and instrumentation systems
- Power for VCO VTUNE control in precision amplifiers
Q & A
- What is the input voltage range of the ADP7118ARDZ-2.5?
The input voltage range is from 2.7 V to 20 V.
- What is the maximum output current of the ADP7118ARDZ-2.5?
The maximum output current is 200 mA.
- What is the output voltage of the ADP7118ARDZ-2.5?
The output voltage is fixed at 2.5 V, but it can be adjusted using an external feedback divider.
- What is the noise level of the ADP7118ARDZ-2.5?
The noise level is 11 µV rms independent of the fixed output voltage ≤ 5 V.
- What is the PSRR of the ADP7118ARDZ-2.5?
The PSRR is 88 dB at 10 kHz, 68 dB at 100 kHz, and 50 dB at 1 MHz.
- What package options are available for the ADP7118ARDZ-2.5?
The device is available in 6-lead LFCSP, 5-lead TSOT, and 8-lead SOIC packages.
- How does the soft start feature work in the ADP7118ARDZ-2.5?
The soft start feature can be controlled with an external capacitor connected to the SS pin, allowing for user-programmable start-up times.
- What are the typical applications of the ADP7118ARDZ-2.5?
Typical applications include communications and infrastructure, medical and healthcare devices, industrial and instrumentation systems, and power for VCO VTUNE control in precision amplifiers.
- Is the ADP7118ARDZ-2.5 RoHS compliant?
Yes, the ADP7118ARDZ-2.5 is RoHS compliant.
- How long does the start-up time typically take for the ADP7118ARDZ-2.5?
The start-up time is approximately 380 µs from the time the EN active threshold is crossed to when the output reaches 90% of the final value.
