Overview
The ADP151ACPZ-1.8-R7 is an ultralow noise, low dropout (LDO) linear regulator produced by Analog Devices Inc. This device is designed to operate from an input voltage range of 2.2 V to 5.5 V and can provide up to 200 mA of output current. It is particularly suited for noise-sensitive analog and RF applications due to its innovative circuit topology that achieves ultralow noise performance without the need for a bypass capacitor. The ADP151 is available in several compact package options, including 5-lead TSOT, 6-lead LFCSP, and 4-ball WLCSP, making it ideal for space-constrained and portable power applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 2.2 V to 5.5 V | V |
| Output Current | Up to 200 mA | mA |
| Output Voltage Options | 1.1 V to 3.3 V (16 fixed options) | V |
| Dropout Voltage at 200 mA | 135 mV (typical) | mV |
| Noise Performance | 9 µV rms (typical) | µV |
| Quiescent Current | 265 µA (typical at IOUT = 200 mA) | µA |
| Shutdown Current | <1 µA (typical) | µA |
| Package Options | 5-lead TSOT, 6-lead LFCSP, 4-ball WLCSP |
Key Features
- Ultralow noise performance: 9 µV rms without the need for a noise bypass capacitor.
- Low dropout voltage: 135 mV at 200 mA load.
- Low quiescent current: 265 µA at 200 mA load.
- Low shutdown current: <1 µA.
- Stable operation with 1 µF ceramic input and output capacitors.
- Internal pull-down resistor on the EN input.
- Short-circuit and thermal overload protection.
- Compact package options: 5-lead TSOT, 6-lead LFCSP, and 4-ball WLCSP.
Applications
The ADP151ACPZ-1.8-R7 is ideal for a variety of applications, including:
- Noise-sensitive analog and RF circuits.
- Battery-operated portable equipment due to its low quiescent current.
- Space-constrained designs where compact packaging is essential.
- High-performance power supply systems requiring low noise and high efficiency.
Q & A
- What is the input voltage range of the ADP151ACPZ-1.8-R7?
The input voltage range is from 2.2 V to 5.5 V. - What is the maximum output current of the ADP151ACPZ-1.8-R7?
The maximum output current is up to 200 mA. - What are the output voltage options for the ADP151?
The ADP151 offers 16 fixed output voltage options ranging from 1.1 V to 3.3 V. - What is the typical dropout voltage at 200 mA load?
The typical dropout voltage at 200 mA load is 135 mV. - Does the ADP151 require a noise bypass capacitor?
No, the ADP151 achieves ultralow noise performance without the need for a noise bypass capacitor. - What are the package options available for the ADP151?
The ADP151 is available in 5-lead TSOT, 6-lead LFCSP, and 4-ball WLCSP packages. - What is the quiescent current of the ADP151 at 200 mA load?
The quiescent current is typically 265 µA at 200 mA load. - Does the ADP151 have built-in protection features?
Yes, the ADP151 includes short-circuit and thermal overload protection circuits. - How does the EN pin function on the ADP151?
The EN pin is used to enable and disable the output voltage. When EN is high, VOUT turns on, and when EN is low, VOUT turns off. - What type of capacitors are recommended for input and output?
The ADP151 is stable with 1 µF ceramic input and output capacitors.
