Overview
The ADP7105ARDZ-3.3-R7 is a Low Drop-Out (LDO) linear voltage regulator from Analog Devices Inc. This CMOS LDO is designed for general-purpose applications requiring a stable and regulated output voltage of 3.3V. It operates with a wide input voltage range of 1.22V to 19V, making it suitable for various high-performance analog and mixed-signal circuits. The regulator features an advanced proprietary architecture that provides high power supply rejection ratio (PSRR), low noise, and excellent line and load transient response with a small 1µF ceramic output capacitor.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Voltage | 3.3 | V |
| Output Current | 500 | mA |
| Input Voltage Range | 1.22 to 19 | V |
| Minimum Operating Temperature | -40 | °C |
| Maximum Operating Temperature | 125 | °C |
| Dropout Voltage | 350 mV (typ), 550 mV (max) | mV |
| Quiescent Current | 900 µA | µA |
| PSRR (Typical) | 60 dB | dB |
| Line Regulation | 0.015 %/V | %/V |
| Load Regulation | 0.2 %/A | %/A |
| Output Noise Voltage (RMS) | 15 µV | µV |
| Package/Case | SOIC N EP-8 |
Key Features
- High power supply rejection ratio (PSRR) and low noise, ensuring stable output voltage.
- Excellent line and load transient response with a small 1µF ceramic output capacitor.
- Digital power-good output for monitoring the health of the output voltage.
- User-programmable precision undervoltage lockout function for sequencing multiple power supplies.
- Protection features include overcurrent, overtemperature, and reverse polarity protection.
Applications
- Noise-sensitive applications such as ADC and DAC circuits, precision amplifiers, high-frequency oscillators, clocks, and PLLs.
- Communications and infrastructure.
- Medical and healthcare devices.
- Industrial and instrumentation applications.
- Portable electronics and automotive systems where power consumption must be minimized.
Q & A
- What is the output voltage of the ADP7105ARDZ-3.3-R7?
The output voltage is 3.3V.
- What is the maximum input voltage for the ADP7105ARDZ-3.3-R7?
The maximum input voltage is 19V).
- What is the typical quiescent current of the ADP7105ARDZ-3.3-R7?
The typical quiescent current is 900 µA).
- What is the PSRR of the ADP7105ARDZ-3.3-R7?
The typical PSRR is 60 dB).
- Does the ADP7105ARDZ-3.3-R7 have protection features?
Yes, it includes overcurrent, overtemperature, and reverse polarity protection).
- What is the operating temperature range of the ADP7105ARDZ-3.3-R7?
The operating temperature range is from -40°C to 125°C).
- What type of output capacitor is recommended for the ADP7105ARDZ-3.3-R7?
A small 1µF ceramic output capacitor is recommended).
- What is the output noise voltage of the ADP7105ARDZ-3.3-R7?
The output noise voltage is 15 µV RMS).
- Does the ADP7105ARDZ-3.3-R7 have a digital power-good output?
Yes, it has a digital power-good output for monitoring the health of the output voltage).
- What is the package type of the ADP7105ARDZ-3.3-R7?
The package type is SOIC N EP-8).
