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 1µF to 4.7µF of output capacitance (±30) with an ESR range of 5mΩ to 400mΩ.

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: 35µA

• Dropout Voltage: <150mV @ 250mA

• Stable with 1µF to 4.7µF Output Capacitance (±30) with an ESR range of 5mΩ to 400mΩ

• ±1.8 Output Accuracy Over-Temperature/Load/Line

• Soft-start Limits Input Current Surge During Enable

• Current Limit and Overheat Protection

• -40°C to +85°C Operating Temperature Range

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

• Pb-free (RoHS compliant)

Applications

• PDAs, Cell Phones and Smart Phones

• Portable Instruments, MP3 Players

• Handheld Devices including Medical Handhelds