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