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250mA Single LDO with Low IQ, Low Noise and High PSRR LDO

The ISL9021 is a single LDO providing high performance low input voltage, high PSRR. It delivers guaranteed continuous 250mA load current and is stable with 1?F to 4.7?F of output capacitance (¡À30) with an ESR range of 5m¦¸ to 400m¦¸.

Features

? High Performance LDO with 250mA guaranteed continuous output current

? Input Voltage Range: 1.5V to 5.5V

? Output Voltage Range: 0.9V to 3.3V

? High PSRR: 75dB @ 10kHz, 50dB @ 1MHz

? Low Quiescent Current: 35?A

? Dropout Voltage: <150mV @ 250mA

? Stable with 1?F to 4.7?F Output Capacitance (¡À30) with an ESR range of 5m¦¸ to 400m¦¸

? ¡À1.8 Output Accuracy Over-Temperature/Load/Line

? Soft-start Limits Input Current Surge During Enable

? Current Limit and Overheat Protection

? -40¡ãC to +85¡ãC Operating Temperature Range

? Available in 1.155mmx0.975mm 4-bump WLCSP Package and 1.6mmx1.6mm 6 Ld ?TDFN

? Pb-free (RoHS compliant)

Applications

? PDAs, Cell Phones and Smart Phones

? Portable Instruments, MP3 Players

? Handheld Devices including Medical Handhelds