Overview
The ADP151ACPZ-2.5-R7 is an ultralow noise, low dropout (LDO) linear regulator produced by Analog Devices Inc. This regulator operates from an input voltage range of 2.2 V to 5.5 V and provides up to 200 mA of output current. It is designed using an innovative circuit topology that achieves ultralow noise performance without the need for a bypass capacitor, making it ideal for noise-sensitive analog and RF applications. The device is particularly suitable for battery-operated portable equipment due to its low quiescent current and low shutdown current.
Key Specifications
| Parameter | Symbol | Test Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Input Voltage Range | VIN | 2.2 | 5.5 | V | ||
| Output Current | IOUT | 200 | mA | |||
| Output Voltage Options | VOUT | 1.1 | 3.3 | V | ||
| Dropout Voltage at 200 mA | VDROPOUT | IOUT = 200 mA | 135 | 230 | mV | |
| Quiescent Current at 200 mA Load | IGND | IOUT = 200 mA | 265 | μA | ||
| Shutdown Current | ISD | < 1 | μA | |||
| Noise Performance | 9 | μV rms | ||||
| Current Limit Threshold | ILIMIT | TJ = 0°C to +125°C | 220 | 400 | mA | |
| Thermal Shutdown Temperature | TJ | 150 | °C |
Key Features
- Ultralow noise performance: 9 µV rms, ideal for noise-sensitive analog and RF applications.
- No noise bypass capacitor required.
- Stable operation with 1 µF ceramic input and output capacitors.
- Low quiescent current: 265 μA at 200 mA load.
- Low shutdown current: < 1 µA.
- Low dropout voltage: 135 mV at 200 mA load.
- Internal pull-down resistor on the EN input.
- Short-circuit and thermal overload protection circuits.
- Available in 5-lead TSOT, 6-lead LFCSP, and 4-ball WLCSP packages.
Applications
- Noise-sensitive analog and RF applications.
- Battery-operated portable equipment.
- High performance, space-constrained applications.
- Portable power applications requiring small footprint solutions.
Q & A
- What is the input voltage range of the ADP151?
The input voltage range of the ADP151 is from 2.2 V to 5.5 V.
- What is the maximum output current of the ADP151?
The maximum output current of the ADP151 is 200 mA.
- What are the output voltage options available for the ADP151?
The ADP151 is available with 16 fixed output voltage options ranging from 1.1 V to 3.3 V.
- What is the typical noise performance of the ADP151?
The ADP151 has an ultralow noise performance of 9 µV rms.
- Does the ADP151 require a noise bypass capacitor?
No, the ADP151 does not require a noise bypass capacitor.
- What is the quiescent current of the ADP151 at full load?
The quiescent current of the ADP151 at 200 mA load is typically 265 μA.
- 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.
- Does the ADP151 have thermal overload protection?
- What is the current limit threshold of the ADP151?
The current limit threshold of the ADP151 is typically between 220 mA and 400 mA.
- Is the ADP151 suitable for battery-operated devices?
