Overview
The ADP7112ACBZ-1.2-R7, produced by Analog Devices Inc., is a CMOS, low dropout (LDO) linear regulator. This device 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 ADP7112 is available in a compact 6-ball 1 mm × 1.2 mm WLCSP package, making it suitable for space-constrained applications.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Input Voltage Range | VIN | 2.7 | - | 20 | V |
| Output Current | IOUT | - | - | 200 | mA |
| Output Voltage Options | VOUT | 1.2 | - | 5.0 | V |
| Output Voltage Noise (rms) | - | - | - | 11 | μV |
| Minimum Input and Output Capacitance | CMIN | 1.5 | - | - | μF |
| Capacitor Effective Series Resistance (ESR) | RESR | 0.001 | 0.3 | - | Ω |
| Package Type | - | - | - | WLCSP-6 (1x1.2 mm) | - |
Key Features
- High input voltage range from 2.7 V to 20 V.
- Up to 200 mA of output current.
- 15 fixed output voltage options, with additional adjustable options using an external feedback divider.
- Low dropout voltage and high power supply rejection ratio (PSRR).
- Low noise output, with 11 μV rms noise for fixed output voltages of 5 V or less.
- User-programmable soft start with an external capacitor.
- Compact 6-ball WLCSP package (1 mm × 1.2 mm).
Applications
- Regulation of high-performance analog and mixed-signal circuits.
- Power supply for various voltage rails in complex systems, such as those requiring 1.2 V, 1.8 V, 3.3 V, and 5.0 V.
- Use in evaluation boards and development kits, such as the EVAL-ADAQ4224-FMCZ board.
- General purpose voltage regulation in industrial, automotive, and consumer electronics.
Q & A
- What is the input voltage range of the ADP7112?
The ADP7112 operates from an input voltage range of 2.7 V to 20 V.
- What is the maximum output current of the ADP7112?
The ADP7112 provides up to 200 mA of output current.
- What are the available fixed output voltage options for the ADP7112?
The ADP7112 is available in 15 fixed output voltage options ranging from 1.2 V to 5.0 V, with additional voltages available by special order.
- How can the output voltage of the ADP7112 be adjusted?
The output voltage can be adjusted above the initial set point using an external feedback divider.
- What is the noise level of the ADP7112 output?
The ADP7112 has an output noise level of 11 μV rms for fixed output voltages of 5 V or less.
- What is the package type of the ADP7112?
The ADP7112 is available in a 6-ball WLCSP package (1 mm × 1.2 mm).
- What is the purpose of the soft start feature in the ADP7112?
The soft start feature, programmable with an external capacitor, helps in reducing inrush current and voltage overshoot during startup).
- What type of capacitors are recommended for use with the ADP7112?
X7R and X5R type capacitors are recommended, while Y5V and Z5U capacitors are not recommended).
- In what types of applications is the ADP7112 commonly used?
The ADP7112 is commonly used in the regulation of high-performance analog and mixed-signal circuits, and in various evaluation boards and development kits).
- What is the significance of high PSRR in the ADP7112?
High PSRR (Power Supply Rejection Ratio) ensures that the output voltage remains stable and free from input voltage noise, which is crucial for high-performance analog and mixed-signal circuits).
