Features and Benefits
- Fixed (ADP322) and adjustable output (ADP323) options
- Bias voltage range (VBIAS): 2.5 V to 5.5 V
- LDO input voltage range (VIN1/VIN2, VIN3): 1.8 V to 5.5 V
- Three 200 mA low dropout voltage regulators (LDOs)
- 16-lead, 3 mm × 3 mm LFCSP
- Initial accuracy: ±1%
- Stable with 1 µF ceramic output capacitors
- No noise bypass capacitor required
- 3 independent logic controlled enables
- Overcurrent and thermal protection
- Key specifications
- High PSRR
- 76 dB PSRR up to 1 kHz
- 70 dB PSRR at 10 kHz
- 60 dB PSRR at 100 kHz
- 40 dB PSRR at 1 MHz
- Low output noise
- 24 µV rms typical output noise at VOUT = 1.2 V
- 43 µV rms typical output noise at VOUT = 2.8 V
- High PSRR
- Excellent transient response
- Low dropout voltage: 110 mV at 200 mA load
- 85 µA typical ground current at no load, all LDOs enabled
- 100 µs fast turn on circuit
- Guaranteed 200 mA output current per regulator
- −40°C to +125°C junction temperature
The ADP322/ADP323 200 mA triple output LDOs combine high PSRR, low noise, low quiescent current, and low dropout voltage to extend the battery life of portable devices and are ideally suited for wireless applications with demanding performance and board space requirements.
The ADP322/ADP323 PSRR is greater than 60 dB for frequencies as high as 100 kHz while operating with a low headroom voltage. The ADP322/ADP323 offer much lower noise performance than competing LDOs without the need for a noise bypass capacitor.
The ADP322/ADP323 are available in a miniature 16-lead, 3 mm × 3 mm LFCSP package and are stable with tiny 1 µF ±30% ceramic output capacitors providing the smallest possible board area for a wide variety of portable power needs.
The ADP322 is available in output voltage combinations ranging from 0.8 V to 3.3 V and offers overcurrent and thermal protection to prevent damage in adverse conditions. The ADP323 adjustable triple LDO can be configured for any output voltage between 0.5 V and 5 V with two resistors for each output.
- Mobile phones
- Digital cameras and audio devices
- Portable and battery-powered equipment
- Portable medical devices
- Post dc-to-dc regulation
Product Lifecycle Recommended for New Designs
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
Evaluation Kits (1)
This product has individual evaluations boards as well as the RedyKit&tm;.
The ADP322CPZ-REDYKIT is available with a triple, fixed LDO evaluation board and a triple, adjustable LDO evaluation board. All surface-mount ADP322 parts are sorted and stored in the kit with the Analog Devices, Inc., part number and fixed output voltage clearly printed on each zip-top bag.
The ADP322/ADP323 evaluation board is used to demonstrate the functionality of the ADP322/ADP323 series of linear regulators. Simple device measurements, such as line and load regulation, dropout voltage, and ground current, can be demonstrated with two voltage supplies, a few voltmeters, current meters, and load resistors.
Simple device measurements such as line and load regulation, dropout, and ground current can be demonstrated with just a single voltage supply, a voltmeter, a current meter, and load resistors.
Tools & Simulations
ADIsimPower is the fastest and most accurate Power Management design tool. ADI's Design Center lets you design your power circuits in three easy steps.
Microsoft Excel download tool from ADIsimPower to generate a power supply design complete with a schematic, bill of materials, and performance specifications.
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
Sample & Buy
The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.