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Analog Devices Inc. ADPL42005 LDO Linear Regulators

Analog Devices Inc. ADPL42005 LDO Linear Regulators are designed for high-performance analog and mixed‐signal circuits operating from 19V to 1.22V rails. These regulators operate from 4V to 20V voltage and provide up to 500mA of output current. The ADPL42005 regulators utilize advanced proprietary architecture to provide high power supply rejection, low noise, and achieve excellent line and load transient response. These regulators are available in six fixed output voltage options and an adjustable version. This allows output voltages that range from 1.22V to VIN − VDO through an external feedback divider. The ADPL42005 LDO regulators feature an output noise voltage of 32µVrms that is independent of the output voltage. A digital power-good output allows power system monitors to check the health of the output voltage. A user-programmable precision undervoltage lockout function facilitates the sequencing of multiple power supplies.

The ADPL42005 regulators offer various protection features, including reverse current protection, foldback current limit, and thermal overload
protection. These regulators feature PSRR performance of 58dB at 10kHz, ±0.8% initial accuracy, 500mA maximum output current, and user-programmable precision UVLO/enable. Typical applications include high-frequency oscillators, clocks, communications and infrastructure, medical and healthcare, and industrial and instrumentation.

Features

  • 4V to 20V input voltage range
  • 500mA maximum output current
  • 32µVrms low noise for fixed output versions
  • 58dB PSRR performance @ 10kHz, VOUT = 3.3V
  • Reverse current protection
  • 400mV low dropout voltage @ 500mA
  • ±0.8% initial accuracy
  • −2% to +1% Accuracy over line, load, and temperature (TJ = −40°C to 125°C)
  • Foldback current limit and thermal overload protection
  • Low quiescent current (VIN = 10V), IGND = 900μA with 500mA load
  • <40µA low shutdown current @ VIN = 12V, stable with small 1µF ceramic output capacitor
  • 1.5V, 1.8V, 2.5V, 3V, 3.3V, and 5V six fixed output voltage options
  • Adjustable output from 1.22V to VIN − VDO
  • User programmable precision UVLO/enable
  • Power-good indicator
  • 8-lead LFCSP and 8-lead SOIC packages

Applications

  • Regulation to noise-sensitive use cases:
  • ADC, DAC circuits, precision amplifiers, high-frequency oscillators, clocks, and PLLs
  • Communications and infrastructure
  • Medical and healthcare
  • Industrial and instrumentation

Typical Application Circuits

Application Circuit Diagram - Analog Devices Inc. ADPL42005 LDO Linear Regulators
發佈日期: 2025-05-05 | 更新日期: 2025-05-12