Dual LDO with Low Noise, Low IQ, and High PSRR

ISL9011A is a high performance dual LDO capable of sourcing 150mA current from Channel 1 and 300mA from Channel 2. The device has a low standby current and highPSRR and is stable with output capacitance of 1μF to 10μF with ESR of up to 200mΩ.

A reference bypass pin allows an external capacitor for adjusting a noise filter for low noise and high PSRR applications.

Features

? Integrates two high performance LDOs

- VO1 - 150mA output

- VO2 - 300mA output

? Excellent transient response to large current steps

? Excellent load regulation: <1 voltage change across full range of load current

? High PSRR: 70dB @ 1kHz

? Wide input voltage capability: 2.3V to 6.5V

? Extremely low quiescent current: 45μA (both LDOs active)

? Low dropout voltage: typically 120mV @ 150mA

? Low output noise: typically 30μVRMS @ 100μA (1.5V)

? Stable with 1μF to 10μF ceramic capacitors

? Separate enable pins for each LDO

? Soft-start to limit input current surge during enable

? Current limit and overheat protection

? ±1.8 accuracy over all operating conditions

? Tiny 10 Ld 3mmx3mm DFN package

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

? Pin compatible with Micrel MIC2211

? Pb-free plus anneal available (RoHS compliant)

Applications

? PDAs, Cell Phones and Smart Phones

? Portable Instruments, MP3 Players

? Handheld Devices including Medical Handhelds