Overview
The ADP323ACPZ-R7, produced by Analog Devices Inc., is a 200 mA triple output Low Dropout (LDO) voltage regulator. This component is designed to combine high Power Supply Rejection Ratio (PSRR), low noise, low quiescent current, and low dropout voltage, making it ideal for extending the battery life of portable devices and wireless applications with demanding performance and board space requirements.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Input Voltage Range (VIN1/VIN2, VIN3) | 1.8 V to 5.5 V | |
| Bias Voltage Range (VBIAS) | 2.5 V to 5.5 V | |
| Output Voltage Range (ADP323) | 0.5 V to 5 V (adjustable) | |
| Output Current | 200 mA per output | |
| PSRR | 76 dB up to 1 kHz, 70 dB at 10 kHz, 60 dB at 100 kHz, 40 dB at 1 MHz | |
| Output Noise | 24 µV rms typical at VOUT = 1.2 V, 43 µV rms typical at VOUT = 2.8 V | |
| Quiescent Current | Low quiescent current | |
| Dropout Voltage | Low dropout voltage | |
| Package | 16-lead, 3 mm × 3 mm LFCSP | |
| Output Capacitor | Stable with 1 µF ±30% ceramic output capacitors | |
| Protection Features | Overcurrent and thermal protection |
Key Features
- High PSRR (Power Supply Rejection Ratio) to minimize noise from the power supply.
- Low output noise without the need for a noise bypass capacitor.
- Low quiescent current to extend battery life in portable devices.
- Low dropout voltage to ensure efficient voltage regulation.
- Three independent logic-controlled enables for each output.
- Overcurrent and thermal protection to prevent damage in adverse conditions.
- Adjustable output voltage (ADP323) using two resistors for each output.
- Compact 16-lead, 3 mm × 3 mm LFCSP package for minimal board space.
Applications
The ADP323ACPZ-R7 is ideally suited for wireless applications and portable devices that require high performance and minimal board space. These include:
- Wireless communication devices such as smartphones, tablets, and laptops.
- Portable medical devices and health monitors.
- IoT devices requiring low power consumption and high efficiency.
- Other battery-powered devices where extended battery life and low noise are critical.
Q & A
- What is the input voltage range for the ADP323ACPZ-R7?
The input voltage range for the ADP323ACPZ-R7 is 1.8 V to 5.5 V.
- What is the adjustable output voltage range for the ADP323?
The output voltage for the ADP323 can be adjusted between 0.5 V and 5 V using two resistors for each output.
- What is the maximum output current per output for the ADP323ACPZ-R7?
The maximum output current per output is 200 mA.
- What are the key protection features of the ADP323ACPZ-R7?
The ADP323ACPZ-R7 includes overcurrent and thermal protection features.
- What type of package does the ADP323ACPZ-R7 come in?
The ADP323ACPZ-R7 comes in a 16-lead, 3 mm × 3 mm LFCSP package.
- What is the recommended output capacitor for the ADP323ACPZ-R7?
The ADP323ACPZ-R7 is stable with 1 µF ±30% ceramic output capacitors.
- What are the typical noise levels for the ADP323ACPZ-R7?
The typical output noise is 24 µV rms at VOUT = 1.2 V and 43 µV rms at VOUT = 2.8 V.
- Does the ADP323ACPZ-R7 require a noise bypass capacitor?
No, the ADP323ACPZ-R7 does not require a noise bypass capacitor.
- What are some common applications for the ADP323ACPZ-R7?
Common applications include wireless communication devices, portable medical devices, IoT devices, and other battery-powered devices.
- What is the PSRR of the ADP323ACPZ-R7?
The PSRR is 76 dB up to 1 kHz, 70 dB at 10 kHz, 60 dB at 100 kHz, and 40 dB at 1 MHz.
