IP Library: Low Noise, High PSRR 100mA Low Dropout Voltage Regulator

■ ULTRA LOW POWER REGULATOR

■ ULTRA LOW CONSUMPTION : 45µA FULL LOAD

■ VERY LOW NOISE : 30µV

■ VERY LOW DROPOUT VOLTAGE : 50mV

■ HIGH PSRR : 60dB

■ SMALL DECOUPLING CERAMIC CAPACITOR

■ NO CURRENT IN POWER DOWN MODE

■ SHORT CIRCUIT PROTECTION

TYPICAL APPLICATIONS

– Cellular and Cordless phones supplied by 1 cell Lithium-ion battery / 3 cells Ni-MH or Ni-Cd battery

– PDA (Personal Digital Assistant)

– Smart phone

– Portable equipment

– Supply for RF devices for cellular phone

APPLICATION NOTE

An external capacitor (COUT = 2.2µF) with an equivalent serial resistance (ESR) in the range of 0.02 to 0.6Ω is used for regulator stability.