Overview
The ADP151AUJZ-2.8-R7, produced by Analog Devices Inc., is an ultralow noise, low dropout (LDO) linear regulator. This device 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 for stable operation with small 1 µF, ±30% ceramic input and output capacitors, making it ideal for high-performance, space-constrained applications. The ADP151 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 noise bypass capacitor.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Input Voltage Range | VIN | 2.2 | 5.5 | V | |
| Output Current | IOUT | 200 | mA | ||
| Output Voltage (Fixed) | VOUT | 1.1 | 2.8 | 3.3 | V |
| Dropout Voltage (IOUT = 200 mA) | VDROPOUT | 135 | 200 | mV | |
| Quiescent Current (IOUT = 0 mA) | IGND | 10 | µA | ||
| Quiescent Current (IOUT = 200 mA) | IGND | 265 | µA | ||
| Shutdown Current | < 1 | µA | |||
| Noise (RMS) | 9 | µV | |||
| Current Limit Threshold | ILIMIT | 220 | 300 | 400 | mA |
| Thermal Shutdown Temperature | 150 | °C |
Key Features
- Ultralow Noise Performance: Achieves 9 µV rms noise without the need for a noise bypass capacitor, making it ideal for noise-sensitive analog and RF applications.
- Low Dropout Voltage: 135 mV at 200 mA load, improving efficiency and allowing operation over a wide input voltage range.
- Low Quiescent Current: 265 µA at full load, suitable for battery-operated portable equipment.
- Stable Operation with Small Capacitors: Designed for stable operation with 1 µF, ±30% ceramic input and output capacitors.
- Multiple Output Voltage Options: Available in 16 fixed output voltage options ranging from 1.1 V to 3.3 V.
- Current and Thermal Overload Protection: Protected against damage due to excessive power dissipation with current and thermal overload protection circuits.
- Internal Pull-Down Resistor on EN Input: Holds the input low when the pin is left open.
- Compact Packages: Available in 5-lead TSOT, 6-lead LFCSP, and 4-ball WLCSP packages for the smallest footprint solution.
Applications
- Noise-Sensitive Analog and RF Applications: Ideal for applications requiring low noise, such as audio, medical devices, and RF circuits.
- Battery-Operated Portable Equipment: Suitable for devices requiring low quiescent current, such as handheld devices, wearables, and IoT devices.
- High-Performance, Space-Constrained Applications: Used in applications where small footprint and high performance are critical, such as in mobile devices and embedded systems.
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 ADP151 can provide up to 200 mA of output current.
- What is the typical noise performance of the ADP151?
The ADP151 achieves 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 due to its innovative circuit topology.
- What is the quiescent current of the ADP151 at full load?
The quiescent current of the ADP151 at full load is typically 265 µA.
- What types of protection circuits are included in the ADP151?
The ADP151 includes current and thermal overload protection circuits.
- What are the available output voltage options for the ADP151?
The ADP151 is available in 16 fixed output voltage options ranging from 1.1 V to 3.3 V.
- What are the typical shutdown current and thermal shutdown temperature of the ADP151?
The shutdown current is typically less than 1 µA, and the thermal shutdown temperature is 150°C.
- What types of packages are available for the ADP151?
The ADP151 is available in 5-lead TSOT, 6-lead LFCSP, and 4-ball WLCSP packages.
- Is the ADP151 suitable for battery-operated devices?
Yes, the ADP151 is suitable for battery-operated portable equipment due to its low quiescent current.
