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Low-Noise, High-PSRR, 600mA LDO with PGOOD Indication


The EUP7908 is an efficient CMOS low dropout (LDO) voltage regulator optimized for ultra-low-noise applications. It offers high output accuracy, low dropout voltage and fast start-up time. The EUP7908 provides a very low noise output without a bypass capacitor, ideal for RF applications where a clean supply voltage source is required. Specifically designed for handheld and battery-powered devices, the EUP7908 provides a TTL-logic-compatible enable pin. When the EUP7908 is disabled, power consumption drops nearly to zero. Key features include current limit, thermal shutdown and faster transient response. The EUP7908 generates an open-drain PGOOD signal to monitor the output regulation.

The EUP7908 works with low-ESR ceramic capacitors. Available in 2mm 2mm TDFN-6 package which reduces the amount of board space for power applications. The EUP7908 offers wide fixed output voltage versions.


  • ‧2.5V to 5.5V Input Voltage Range
  • ‧30μV(rms) Output Noise
  • ‧360mV Dropout @ 600mA
  • ‧68dB PSRR at 1kHz No Bypass Capacitor
  • ‧Guaranteed 600mA Output Current
  • ‧Stable with a 2.2μF Ceramic Output Capacitor
  • ‧Excellent Load/Line Transient
  • ‧Power-Good Window Comparator
  • ‧Thermal Shutdown and Current Limit Protection
  • ‧Adjustable Output Voltage:0.8V to 5V
  • ‧Auto-Discharge when Shutdown
  • ‧Available in 2mm 2mm TDFN-6 Package
  • ‧RoHS Compliant and 100% Lead (Pb)-Free Halogen-Free


  • ‧Cellular Phones
  • ‧Camera Modules
  • ‧PDA and Palmtop Computers
  • ‧Consumer/Personal Electronics
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