Overview
The ADP7158ACPZ-3.3-R7 is a high-performance linear voltage regulator produced by Analog Devices Inc. This regulator operates from an input voltage range of 2.3 V to 5.5 V and provides a fixed output voltage of 3.3 V with a maximum load current of up to 2 A. It is designed using an advanced proprietary architecture that ensures high power supply rejection ratio (PSRR) and ultralow noise, making it suitable for noise-sensitive applications.
The device is available in compact 10-lead, 3 mm x 3 mm LFCSP and 8-lead SOIC packages, offering excellent thermal performance and a small footprint. This makes it ideal for applications requiring high current output in limited space.
Key Specifications
| Parameter | Symbol | Test Conditions/Comments | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Input Voltage Range | VIN | 2.3 | 5.5 | V | ||
| Output Voltage | VOUT | Fixed output for this model | 3.3 | V | ||
| Load Current | ILOAD | 2 | A | |||
| Operating Supply Current | IGND | ILOAD = 0 | 4.0 | 8.0 | mA | |
| IGND | ILOAD = 2 A | 9.0 | 14.0 | mA | ||
| Shutdown Current | IIN_SD | EN = GND | 0.2 | 4 | µA | |
| Output Noise | OUTNOISE | 10 Hz to 100 kHz | 1.6 | µV rms | ||
| OUTNOISE | 100 Hz to 100 kHz | 0.9 | µV rms | |||
| Noise Spectral Density | 10 kHz to 1 MHz | 1.7 | nV/√Hz | |||
| Power Supply Rejection Ratio (PSRR) | 1 kHz to 100 kHz | 70 | dB | |||
| 1 MHz | 50 | dB | ||||
| Dropout Voltage | ILOAD = 2 A, VOUT = 3.3 V | 200 | mV |
Key Features
- High PSRR and Ultralow Noise: Achieves 70 dB PSRR from 1 kHz to 100 kHz and 50 dB at 1 MHz, with output noise as low as 0.9 µV rms from 100 Hz to 100 kHz and 1.7 nV/√Hz from 10 kHz to 1 MHz.
- High Current Capability: Provides up to 2 A of output current.
- Compact Packaging: Available in 10-lead, 3 mm x 3 mm LFCSP and 8-lead SOIC packages, ensuring excellent thermal performance and a small footprint.
- Low Shutdown Current: Typically 0.2 µA when the enable pin is grounded.
- Stable Operation: Stable with a 10 µF ceramic output capacitor.
- Wide Input Voltage Range: Operates from 2.3 V to 5.5 V.
Applications
- Noise-Sensitive Applications: Ideal for phase-locked loops (PLLs), voltage-controlled oscillators (VCOs), and other noise-sensitive circuits.
- Communications and Infrastructure: Suitable for backhaul and microwave links, and other communication infrastructure.
- General Power Supply Needs: Can be used in various applications requiring high current output with low noise and high PSRR.
Q & A
- What is the input voltage range of the ADP7158ACPZ-3.3-R7?
The input voltage range is from 2.3 V to 5.5 V.
- What is the maximum load current of the ADP7158ACPZ-3.3-R7?
The maximum load current is up to 2 A.
- What are the typical output noise levels of the ADP7158ACPZ-3.3-R7?
The typical output noise is 0.9 µV rms from 100 Hz to 100 kHz and 1.6 µV rms from 10 Hz to 100 kHz.
- What is the power supply rejection ratio (PSRR) of the ADP7158ACPZ-3.3-R7?
The PSRR is 70 dB from 1 kHz to 100 kHz and 50 dB at 1 MHz.
- In what packages is the ADP7158ACPZ-3.3-R7 available?
It is available in 10-lead, 3 mm x 3 mm LFCSP and 8-lead SOIC packages.
- What is the typical dropout voltage of the ADP7158ACPZ-3.3-R7?
The typical dropout voltage is 200 mV at ILOAD = 2 A and VOUT = 3.3 V.
- What is the recommended output capacitor for the ADP7158ACPZ-3.3-R7?
A 10 µF ceramic output capacitor is recommended for stable operation.
- What types of capacitors are recommended for use with the ADP7158ACPZ-3.3-R7?
X7R and X5R type capacitors are recommended; Y5V and Z5U capacitors are not recommended.
- What are some typical applications for the ADP7158ACPZ-3.3-R7?
It is suitable for noise-sensitive applications such as PLLs, VCOs, and communication infrastructure like backhaul and microwave links.
- What is the shutdown current of the ADP7158ACPZ-3.3-R7 when the enable pin is grounded?
The shutdown current is typically 0.2 µA when the enable pin is grounded.
