Overview
The ADP121-AUJZ33R7 is a low dropout, linear voltage regulator produced by Analog Devices Inc. This regulator is designed to operate from an input voltage range of 2.3 V to 5.5 V and can provide up to 150 mA of output current. It is particularly suited for battery-operated portable equipment due to its low quiescent current of 30 μA at full load. The ADP121-AUJZ33R7 is available in various output voltages ranging from 1.2 V to 3.3 V, making it versatile for different application needs.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Input Voltage Range | VIN | TJ = −40°C to +125°C | 2.3 | 5.5 | V | |
| Operating Supply Current | IGND | IOUT = 0 μA | 11 | 21 | μA | |
| Operating Supply Current | IGND | IOUT = 10 mA | 15 | 29 | μA | |
| Operating Supply Current | IGND | IOUT = 150 mA | 30 | 40 | μA | |
| UnderVoltage LockOut (UVLO) | UVLORISE | Input Voltage Rising | 2.25 | V | ||
| UnderVoltage LockOut (UVLO) | UVLOFALL | Input Voltage Falling | 1.5 | V | ||
| Hysteresis | UVLOHYS | 120 | mV | |||
| Output Noise | OUTNOISE | 10 Hz to 100 kHz, VIN = 5 V, VOUT = 3.3 V | 65 | μV rms | ||
| Power Supply Rejection Ratio (PSRR) | PSRR | 10 kHz, VIN = 5 V, VOUT = 3.3 V | 60 | dB |
Key Features
- Low dropout voltage of 135 mV at 150 mA load, improving efficiency and allowing operation over a wide input voltage range.
- Low quiescent current of 30 μA at full load, ideal for battery-operated portable equipment.
- Available in output voltages ranging from 1.2 V to 3.3 V.
- 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 circuits to prevent damage in adverse conditions.
- Available in tiny 5-lead TSOT and 4-ball 0.4 mm pitch halide-free WLCSP packages.
Applications
The ADP121-AUJZ33R7 is suitable for a variety of portable applications, including battery-operated devices, handheld electronics, and other low-power systems that require efficient voltage regulation. Its small footprint and low quiescent current make it an ideal choice for devices where space and power efficiency are critical.
Q & A
- What is the input voltage range of the ADP121-AUJZ33R7?
The input voltage range is from 2.3 V to 5.5 V. - What is the maximum output current of the ADP121-AUJZ33R7?
The maximum output current is up to 150 mA. - What is the quiescent current of the ADP121-AUJZ33R7 at full load?
The quiescent current at full load is 30 μA. - What are the available output voltages for the ADP121-AUJZ33R7?
The available output voltages range from 1.2 V to 3.3 V. - What type of capacitors is the ADP121-AUJZ33R7 optimized for?
The ADP121-AUJZ33R7 is optimized for use with small 1 μF ceramic output capacitors. - Does the ADP121-AUJZ33R7 have built-in protection features?
Yes, it includes short-circuit protection and thermal overload protection circuits. - What are the package options for the ADP121-AUJZ33R7?
The ADP121-AUJZ33R7 is available in 5-lead TSOT and 4-ball 0.4 mm pitch halide-free WLCSP packages. - What is the typical power supply rejection ratio (PSRR) of the ADP121-AUJZ33R7?
The typical PSRR is 60 dB at 10 kHz for VOUT = 3.3 V. - Is the ADP121-AUJZ33R7 suitable for battery-operated devices?
Yes, it is ideal for battery-operated portable equipment due to its low quiescent current. - What is the dropout voltage of the ADP121-AUJZ33R7 at 150 mA load?
The dropout voltage at 150 mA load is 135 mV.
