ADP323

RECOMMENDED FOR NEW DESIGNS

Triple, 200 mA, Low Noise, High PSRR Voltage Regulator

Data Sheet (Rev. E) Product Selection Table
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Overview

  • 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
  • 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.

Applications

  • Mobile phones
  • Digital cameras and audio devices
  • Portable and battery-powered equipment
  • Portable medical devices
  • Post dc-to-dc regulation
ADP323
Triple, 200 mA, Low Noise, High PSRR Voltage Regulator
ADP323 Functional Block Diagram ADP323 Pin Configuration
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Documentation

Data Sheet 1

User Guide 1

Application Note 1

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Tools & Simulations

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Evaluation Kits

EVAL-ADP322

ADP322 Evaluation Board

Buy Now View Details

Product Details

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.

EVAL-ADP323

ADP323 Evaluation Board

Buy Now View Details

Product Details

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.
EVAL-ADP322
ADP322 Evaluation Board
EVAL-ADP323
ADP323 Evaluation Board

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