ISL9003 is a high performance single low noise, high PSRR

LDO that delivers a continuous 150mA of load current. It has

a low standby current and is stable with 1μF of MLCC output

capacitance with an ESR of up to 200mΩ.

The ISL9003 has a very high PSRR of 90dB and output

noise is 20μVRMS (typical). When coupled with a no load

quiescent current of 30μA (typical), and 0.5μA shutdown

current, the ISL9003 is an ideal choice for portable wireless

equipment.

The ISL9003 comes in many fixed voltage options with

±1.8 output voltage accuracy over temperature, line and

load. Other output voltage options are available on request.

Features

? High performance LDO with 150mA continuous output

? Excellent transient response to large current steps

? Excellent load regulation:

< 0.1 voltage change across full range of load current

? Very high PSRR: >90dB @ 1kHz

? Wide input voltage capability: 2.3V to 6.5V

? Extremely low quiescent current: 29μA

? Low dropout voltage: typically 200mV @ 150mA

? Low output noise: typically 20μVRMS @ 100μA (1.5V)

? Stable with 1μF to 4.7μF ceramic capacitors

? Shutdown pin turns off LDO with 1μA (max) standby

current

? Soft-start limits input current surge during enable

? Current limit and overheat protection

? ±1.8 accuracy over all operating conditions

? 5 Ld SC-70 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