LDO with Low ISUPPLY, High PSRR

ISL9001 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 an output capacitance of 1µF to 10µF with an ESR of up to 200mΩ.
The ISL9001 has a very high PSRR of 90dB and outputs noise less than 30µVRMS. A reference bypass pin allows connection of a noise-filtering capacitor for low-noise and high-PSRR applications. When coupled with a no load quiescent current of 25µA (typical), and 0.1µA shutdown current, the ISL9001 is an ideal choice for portable wireless equipment.
The ISL9001 provides a power-good signal with delay time programmable with an external capacitor.

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: 90dB @ 1kHz
• Wide input voltage capability: 2.3V to 6.5V
• Extremely low quiescent current: 25µA
• Low dropout voltage: typically 200mV @ 300mA
• Low output noise: typically 30µVRMS @ 100µA (1.5V)
• Stable with 1µF to 10µF ceramic capacitors
• Soft-start to limit input current surge during enable
• Current limit and overheat protection
• Delayed POR, programmable with external capacitor
• ±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