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.