Overview
The ADP121-AUJZ18R7 is a low dropout, linear regulator produced by Analog Devices Inc. This regulator operates from an input voltage range of 2.3 V to 5.5 V and provides up to 150 mA of output current. It is designed for high efficiency and stability, making it ideal for battery-operated portable equipment due to its low quiescent current of 30 μA at full load. The ADP121 is available in various output voltages ranging from 1.2 V to 3.3 V, with the specific model ADP121-AUJZ18R7 providing a fixed output voltage of 1.8 V.
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 | 1.8 | V | |||
| Output Current | IOUT | 150 | mA | |||
| Quiescent Current | IGND | IOUT = 150 mA | 30 | 40 | μA | |
| Dropout Voltage | IOUT = 150 mA | 135 | mV | |||
| UnderVoltage Lockout (Rising) | UVLORISE | 2.25 | V | |||
| UnderVoltage Lockout (Falling) | UVLOFALL | 1.5 | V | |||
| Output Noise (10 Hz to 100 kHz) | OUTNOISE | VIN = 5 V, VOUT = 1.8 V | ~60 | μV rms | ||
| Power Supply Rejection Ratio (PSRR) | PSRR | 10 kHz, VIN = 5 V, VOUT = 1.8 V | 60 | dB |
Key Features
- Low dropout voltage of 135 mV at 150 mA load, enhancing efficiency and allowing operation over a wide input voltage range.
- Low quiescent current of 30 μA at full load, making it suitable for battery-operated devices.
- Optimized for stable operation with small 1 μF ceramic output capacitors.
- Excellent transient performance with minimal board area.
- Short-circuit protection and thermal overload protection to prevent damage in adverse conditions.
- Available in a compact 5-lead TSOT and 4-ball 0.4 mm pitch halide-free WLCSP packages.
Applications
The ADP121-AUJZ18R7 is particularly suited for a variety of portable applications, including battery-operated devices, handheld electronics, and other power-sensitive equipment. Its compact packaging and low power consumption make it ideal for use in space-constrained designs where high efficiency and reliability are crucial.
Q & A
- What is the input voltage range of the ADP121-AUJZ18R7?
The input voltage range is from 2.3 V to 5.5 V. - What is the maximum output current of the ADP121-AUJZ18R7?
The maximum output current is 150 mA. - What is the quiescent current of the ADP121-AUJZ18R7 at full load?
The quiescent current at full load is 30 μA. - What is the dropout voltage of the ADP121-AUJZ18R7 at 150 mA load?
The dropout voltage at 150 mA load is 135 mV. - Does the ADP121-AUJZ18R7 have built-in protection features?
Yes, it includes short-circuit protection and thermal overload protection. - What type of output capacitors is the ADP121-AUJZ18R7 optimized for?
It is optimized for use with small 1 μF ceramic output capacitors. - What are the available package types for the ADP121-AUJZ18R7?
The ADP121-AUJZ18R7 is available in 5-lead TSOT and 4-ball 0.4 mm pitch halide-free WLCSP packages. - What is the output voltage of the ADP121-AUJZ18R7 model?
The output voltage of the ADP121-AUJZ18R7 model is fixed at 1.8 V. - Is the ADP121-AUJZ18R7 compliant with RoHS regulations?
Yes, it is compliant with both EU RoHS and China RoHS regulations. - What are some typical applications for the ADP121-AUJZ18R7?
Typical applications include battery-operated portable equipment, handheld electronics, and other power-sensitive devices.
