Overview
The ADP122AUJZ-3.0-R7 is a low quiescent current, low dropout linear regulator produced by Analog Devices Inc. This device is part of the ADP122 series, designed to operate from an input voltage range of 2.3 V to 5.5 V and provide up to 300 mA of output current. It is particularly suited for battery-operated portable equipment due to its low quiescent current and high efficiency.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Input Voltage Range | VIN | 2.3 | 5.5 | V | |
| Output Voltage | VOUT | 3.0 | 3.0 | V | |
| Output Current | IOUT | 300 | mA | ||
| Dropout Voltage | VDO | 85 | mV @ 300 mA | ||
| Quiescent Current | IGND | 45 | 105 | µA | |
| Shutdown Current | <1 | µA | |||
| Initial Accuracy | ±1% | ||||
| PSRR at 100 kHz | 60 | dB | |||
| Package Type | TSOT-23-5 |
Key Features
- Low quiescent current: 45 µA at no load, making it ideal for battery-operated devices.
- Low dropout voltage: 85 mV at 300 mA load, enhancing efficiency and operational range.
- High accuracy: ±1% initial accuracy.
- Excellent PSRR: 60 dB at 100 kHz.
- Compact packages: Available in 5-lead TSOT and 6-lead 2 mm × 2 mm LFCSP.
- Logic controlled enable.
- Current limit and thermal overload protection.
- Internal soft start with a constant start-up time of 350 µs.
Applications
- Digital camera and audio devices.
- Portable and battery-powered equipment.
- Automatic meter reading (AMR) meters.
- GPS and location management units.
- Medical instrumentation.
- Point-of-sale equipment.
Q & A
- What is the input voltage range of the ADP122AUJZ-3.0-R7?
The input voltage range is from 2.3 V to 5.5 V.
- What is the maximum output current of the ADP122AUJZ-3.0-R7?
The maximum output current is 300 mA.
- What is the dropout voltage of the ADP122AUJZ-3.0-R7 at 300 mA load?
The dropout voltage is 85 mV at 300 mA load.
- What is the quiescent current of the ADP122AUJZ-3.0-R7 at no load?
The quiescent current is 45 µA at no load.
- What is the initial accuracy of the ADP122AUJZ-3.0-R7?
The initial accuracy is ±1%.
- What is the PSRR of the ADP122AUJZ-3.0-R7 at 100 kHz?
The PSRR is 60 dB at 100 kHz.
- What protection features does the ADP122AUJZ-3.0-R7 have?
The device has current limit and thermal overload protection.
- What is the package type of the ADP122AUJZ-3.0-R7?
The package type is TSOT-23-5.
- What is the start-up time of the ADP122AUJZ-3.0-R7?
The start-up time is 350 µs due to the internal soft start.
- What are some typical applications of the ADP122AUJZ-3.0-R7?
Typical applications include digital cameras, portable and battery-powered equipment, AMR meters, GPS units, medical instrumentation, and point-of-sale equipment.
