Analog Devices Inc. ADP7104 LDO Linear Regulators

Analog Devices ADP7104 CMOS, Low Dropout (LDO), Linear Regulators operate in the 3.3V-20V input voltage range and offer up to a 500mA output current. Developed with an advanced proprietary architecture, ADP7104 regulators provide high-power supply rejection and low-noise performance. A small 1μF ceramic output capacitor gives the ADP7104 LDOs excellent line and load transient response rates.

The ADP7104 series features both fixed and adjustable output voltage versions. The fixed-voltage versions range from 1.5V to 9V and have a low noise rating of 15μVrms. The adjustable version offers an adjustable output voltage range of 1.22V to VIN − VDO. 

A power-good indicator allows power monitors to check the output voltage. A programmable, precision undervoltage lockout function enables the sequencing of multiple power supplies. 

The ADP7104 regulators are housed in 8-lead, 3mm × 3mm LFCSP, and 8-lead SOIC packages. The LFCSP package offers designers a compact solution with excellent thermal performance. This package is ideal for applications that require a small, low-profile footprint and up to 500mA of output current. As high-input voltage LDOs, the ADP7104 regulators are well-suited for the regulation of high-performance analog and mixed-signal circuits that operate using 19V to 1.22V rails.

Features

  • Input voltage range: 3.3V to 20V
  • Maximum output current: 500mA
  • Low noise: 15μVrms for fixed output versions
  • PSRR performance of 60dB at 10kHz, VOUT = 3.3V
  • Reverse current protection
  • Low dropout voltage: 350mV at 500mA
  • Initial accuracy: ±0.8%
  • Accuracy over line, load, and temperature: −2%/+1%
  • Low quiescent current (VIN = 5V), IGND= 900μA with 500mA load
  • Low shutdown current: <40μA at VIN = 12V, stable with small 1μF ceramic output capacitor
  • 7 fixed output voltage options: 1.5V, 1.8V, 2.5V, 3V, 3.3V, 5V, and 9V
  • Adjustable output from 1.22V to VIN − VDO
  • Foldback current limit and thermal overload protection
  • User-programmable precision UVLO/enable
  • Power-good indicator
  • 8-lead LFCSP and 8-lead SOIC packages

Applications

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

Application Circuits

Analog Devices Inc. ADP7104 LDO Linear Regulators

Additional Resources

Enabling Robust Wired Condition-Based Monitoring for Industry 4.0 

Condition-Based Monitoring of robotics and rotating machines, such as turbines, fans, pumps, and motors, records real-time data related to the health and performance of the machine enables targeted predictive maintenance, as well as optimized control. Read more to reduce design cycle and test time, and enable faster time to market for industrial CbM solutions. 

Learn More

Published: 2016-08-08 | Updated: 2022-03-11