Overview
The ADP7105ARDZ-3.3-R7 is a high-performance, low-dropout (LDO) linear regulator produced by Analog Devices Inc. This CMOS LDO is designed to regulate high-performance analog and mixed-signal circuits, operating from input voltage ranges of 3.3V to 20V. It features advanced proprietary architecture, providing high power supply rejection, low noise, and excellent line and load transient response. The regulator is particularly suited for noise-sensitive applications such as ADC and DAC circuits, precision amplifiers, high-frequency oscillators, and more.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Input Voltage Range | 3.3V to 20V | |
| Output Voltage | 3.3V | |
| Output Current | Up to 500mA | |
| Output Voltage Accuracy | ±0.8% maximum at IOUT = 10mA, TA = 25°C | |
| Dropout Voltage | 20mV typical at IOUT = 10mA, TA = 25°C | |
| Operating Supply Current | 400µA typical at IOUT = 100µA, VIN = 10V, TA = 25°C | |
| Shutdown Current | 40µA typical at EN = GND, VIN = 12V, TA = 25°C | |
| Operating Junction Temperature Range | -40°C to +125°C | |
| Package Type | 8-lead SOIC-N-EP |
Key Features
- Programmable soft start for inrush current control
- Power good indicator for monitoring output voltage health
- Foldback current-limit and thermal overload protection for enhanced reliability
- User-programmable precision undervoltage lockout (UVLO) function for sequencing multiple power supplies
- Low noise output with 15µV rms noise voltage independent of output voltage
- Reverse current protection
- Compact surface-mount package (8-lead SOIC-N-EP)
Applications
- Noise-sensitive applications: ADC and DAC circuits, precision amplifiers, high-frequency oscillators, clocks, and PLLs
- Communications and infrastructure
- Medical and healthcare
- Industrial and instrumentation
- Consumer electronics and telecommunications equipment
- Automotive electronics and portable devices
Q & A
- What is the input voltage range of the ADP7105ARDZ-3.3-R7?
The input voltage range is from 3.3V to 20V.
- What is the maximum output current of the ADP7105ARDZ-3.3-R7?
The maximum output current is up to 500mA.
- What is the output voltage accuracy of the ADP7105ARDZ-3.3-R7?
The output voltage accuracy is ±0.8% maximum at IOUT = 10mA, TA = 25°C.
- Does the ADP7105ARDZ-3.3-R7 have any protection features?
Yes, it includes foldback current-limit, thermal overload protection, and reverse current protection.
- What is the typical operating supply current of the ADP7105ARDZ-3.3-R7?
The typical operating supply current is 400µA at IOUT = 100µA, VIN = 10V, TA = 25°C.
- What is the shutdown current of the ADP7105ARDZ-3.3-R7?
The shutdown current is 40µA typical at EN = GND, VIN = 12V, TA = 25°C.
- What is the operating junction temperature range of the ADP7105ARDZ-3.3-R7?
The operating junction temperature range is from -40°C to +125°C.
- What package type does the ADP7105ARDZ-3.3-R7 come in?
The package type is 8-lead SOIC-N-EP.
- Does the ADP7105ARDZ-3.3-R7 have a power good indicator?
Yes, it includes a digital power-good output for monitoring the health of the output voltage.
- Is the ADP7105ARDZ-3.3-R7 suitable for noise-sensitive applications?
Yes, it is designed for noise-sensitive applications with low noise output and high power supply rejection.
