Overview
The ADP121-AUJZ28R7 is a low dropout linear regulator produced by Analog Devices Inc. This component is part of the ADP121 series, known for its high efficiency and low quiescent current, making it ideal for battery-operated portable equipment. The ADP121 operates from an input voltage range of 2.3 V to 5.5 V and provides an output voltage of 2.8 V with a maximum output current of 150 mA.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Input Voltage Range | VIN | TJ = −40°C to +125°C | 2.3 | 5.5 | V | |
| Output Voltage | VOUT | 2.8 | V | |||
| Output Current | IOUT | 0 | 150 | mA | ||
| Quiescent Current (IOUT = 0 mA) | IGND | 11 | 21 | μA | ||
| Quiescent Current (IOUT = 150 mA) | IGND | 30 | 40 | μA | ||
| Shutdown Current | <1 | μA | ||||
| Dropout Voltage (at 150 mA load) | 135 | mV | ||||
| Operating Temperature Range | TJ | −40 | +125 | °C |
Key Features
- Low quiescent current: 11 μA with 0 mA load and 30 μA with 150 mA load, making it suitable for battery-operated devices.
- Low dropout voltage: 135 mV at 150 mA load, enhancing efficiency and allowing operation over a wide input voltage range.
- High output current: Up to 150 mA.
- Stable operation with small 1 μF ceramic output capacitors.
- Short-circuit protection and thermal overload protection to prevent damage in adverse conditions.
- Available in compact packages: 5-lead TSOT and 4-ball 0.4 mm pitch WLCSP, ideal for portable applications.
Applications
- Battery-operated portable equipment such as smartphones, tablets, and handheld devices.
- Wearable electronics like smartwatches and fitness trackers.
- Wireless communication devices, including Bluetooth and Wi-Fi modules.
- Medical devices requiring low power consumption and high efficiency.
- Consumer electronics such as MP3 players and digital cameras.
Q & A
- What is the input voltage range of the ADP121-AUJZ28R7?
The input voltage range is from 2.3 V to 5.5 V.
- What is the output voltage of the ADP121-AUJZ28R7?
The output voltage is 2.8 V.
- What is the maximum output current of the ADP121-AUJZ28R7?
The maximum output current is 150 mA.
- What is the quiescent current of the ADP121-AUJZ28R7 at full load?
The quiescent current at full load (150 mA) is 30 μA.
- Does the ADP121-AUJZ28R7 have built-in protection features?
Yes, it includes short-circuit protection and thermal overload protection.
- What types of packages are available for the ADP121-AUJZ28R7?
It is available in 5-lead TSOT and 4-ball 0.4 mm pitch WLCSP packages.
- What is the operating temperature range of the ADP121-AUJZ28R7?
The operating temperature range is from −40°C to +125°C.
- Is the ADP121-AUJZ28R7 suitable for battery-operated devices?
Yes, due to its low quiescent current and high efficiency.
- What is the dropout voltage of the ADP121-AUJZ28R7 at 150 mA load?
The dropout voltage is 135 mV at 150 mA load.
- Can the ADP121-AUJZ28R7 operate with small ceramic capacitors?
Yes, it is optimized for stable operation with small 1 μF ceramic output capacitors.
