Overview
The ADP322ACPZ-145-R7 is a high-performance, triple output Low Dropout (LDO) voltage regulator produced by Analog Devices Inc. This device is designed to provide efficient power management for a variety of portable and battery-powered applications. It combines high Power Supply Rejection Ratio (PSRR), low noise, low quiescent current, and low dropout voltage, making it ideal for extending battery life in demanding environments.
Key Specifications
| Parameter | Value |
|---|---|
| Package Type | 16-Lead LFCSP (3mm x 3mm w/ EP) |
| Input Voltage Range (VIN1/VIN2, VIN3) | 1.8 V to 5.5 V |
| Output Voltage Range (VOUT) | 0.8 V to 3.3 V (fixed output) |
| Maximum Output Current per Regulator | 200 mA |
| Dropout Voltage | 110 mV at 200 mA load |
| 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 |
| Operating Temperature Range | -40°C to +125°C |
| Ground Current at No Load | 85 µA typical, all LDOs enabled |
| Start-Up Time | 100 µs to 240 µs depending on the configuration |
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 dropout voltage to ensure efficient power delivery.
- Overcurrent and thermal protection to prevent damage in adverse conditions.
- Three independent logic-controlled enables for flexible power management.
- Stable operation with small 1 µF ±30% ceramic output capacitors.
- Compact 16-lead LFCSP package (3mm x 3mm) for minimal board space.
Applications
- Mobile phones and other portable communication devices.
- Digital cameras and audio devices.
- Portable and battery-powered equipment.
- Portable medical devices.
- Post dc-to-dc regulation in various power systems.
Q & A
- What is the maximum output current per regulator for the ADP322ACPZ-145-R7?
The maximum output current per regulator is 200 mA. - What is the operating temperature range of the ADP322ACPZ-145-R7?
The operating temperature range is -40°C to +125°C. - What is the typical ground current at no load for the ADP322ACPZ-145-R7?
The typical ground current at no load is 85 µA with all LDOs enabled. - Does the ADP322ACPZ-145-R7 require a noise bypass capacitor?
No, it does not require a noise bypass capacitor due to its low noise performance. - What is the package type of the ADP322ACPZ-145-R7?
The package type is a 16-Lead LFCSP (3mm x 3mm w/ EP). - What are the key protection features of the ADP322ACPZ-145-R7?
The key protection features include overcurrent, overtemperature, and under-voltage lockout (UVLO). - What is the typical start-up time for the ADP322ACPZ-145-R7?
The typical start-up time ranges from 100 µs to 240 µs depending on the configuration. - What type of capacitors are recommended for use with the ADP322ACPZ-145-R7?
X7R and X5R type capacitors are recommended; Y5V and Z5U capacitors are not recommended. - What are some common applications of the ADP322ACPZ-145-R7?
Common applications include mobile phones, digital cameras, portable medical devices, and post dc-to-dc regulation in various power systems. - How many independent logic-controlled enables does the ADP322ACPZ-145-R7 have?
The ADP322ACPZ-145-R7 has three independent logic-controlled enables.
