Overview
The ADP122AUJZ-2.8-R7 is a low dropout linear regulator (LDO) produced by Analog Devices Inc. This component is part of the ADP122 series, which is designed for high-performance, space-constrained applications. The ADP122AUJZ-2.8-R7 specifically provides a fixed output voltage of 2.8V and is optimized for battery-operated portable equipment due to its low quiescent current and high efficiency.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 2.3 to 5.5 | V |
| Output Voltage | 2.8 | V |
| Maximum Output Current | 300 | mA |
| Dropout Voltage | 85 mV at 300 mA load | mV |
| Quiescent Current | 45 µA at no load | µA |
| Shutdown Current | <1 µA | µA |
| Output Voltage Accuracy | ±1% | % |
| Operating Temperature Range | -40°C to +125°C | °C |
| Package Type | 5-lead TSOT |
Key Features
- Low quiescent current of 45 µA at no load, making it ideal for battery-operated devices.
- Very low dropout voltage of 85 mV at a 300 mA load, enhancing efficiency and allowing operation over a wide input voltage range.
- High output voltage accuracy of ±1%.
- Internal soft start with a constant start-up time of 350 µs.
- Current limit and thermal overload protection to prevent damage in adverse conditions.
- Logic-controlled enable pin with an internal pulldown resistor.
- Compact 5-lead TSOT package for minimal footprint.
- Excellent power supply rejection ratio (PSRR) performance of 60 dB at 100 kHz.
- Optimized for use with small 1.0 µF ceramic capacitors.
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-2.8-R7?
The input voltage range is from 2.3 V to 5.5 V.
- What is the fixed output voltage of the ADP122AUJZ-2.8-R7?
The fixed output voltage is 2.8 V.
- What is the maximum output current of the ADP122AUJZ-2.8-R7?
The maximum output current is 300 mA.
- What is the dropout voltage of the ADP122AUJZ-2.8-R7 at a 300 mA load?
The dropout voltage is 85 mV at a 300 mA load.
- What is the quiescent current of the ADP122AUJZ-2.8-R7 at no load?
The quiescent current is 45 µA at no load.
- Does the ADP122AUJZ-2.8-R7 have built-in protection features?
- What type of package does the ADP122AUJZ-2.8-R7 come in?
- What is the operating temperature range of the ADP122AUJZ-2.8-R7?
- What are some typical applications for the ADP122AUJZ-2.8-R7?
Typical applications include digital cameras, portable and battery-powered equipment, AMR meters, GPS units, medical instrumentation, and point-of-sale equipment.
- How does the ADP122AUJZ-2.8-R7 handle startup?
The device has an internal soft start with a constant start-up time of 350 µs.
