LDO with Low ISUPPLY, High PSRR

ISL9005A is a high performance Low Dropout linear regulator capable of sourcing 300mA current. It has a low standby current and high-PSRR and is stable with output capacitance of 1µF to 10µF with ESR of up to 200mΩ.

Features

• 300mA high performance LDO

• Excellent transient response to large current steps

• Excellent load regulation: <0.1 voltage change across full range of load current

• High PSRR: 75dB @ 1kHz

• Wide input voltage capability: 2.3V to 6.5V

• Very low quiescent current: 50µA

• Low dropout voltage: typically 200mV @ 300mA

• Low output noise: typically 45µVRMS @ 100µA (1.5V)

• Stable with 1µF to 10µF ceramic capacitors

• Soft-start to limit input current surge during enable

• Current limit and overheat protection

• ±1.8 accuracy over all operating conditions

• Tiny 2mmx3mm 8 Ld DFN package

• -40°C to +85°C operating temperature range

• Pb-free (RoHS compliant)

Applications

• PDAs, cell phones and smart phones

• Portable instruments, MP3 players

• Handheld devices, including medical handhelds