ISL9003A 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 ISL9003A has a very high PSRR of 90dB and output noise is 20μV_RMS (typical). When coupled with a no load quiescent current of 31μA (typical), and 0.5μA shutdown current, the ISL9003A is an ideal choice for portable wireless equipment.

The ISL9003A 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.

• 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: 31μA
• Low dropout voltage: typically 200mV @ 150mA
• Low output noise: typically 20μV_RMS @ 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 or 6 Ld μTDFN package
• -40°C to +85°C operating temperature range
• Pb-free (RoHS compliant)

• PDAs, cell phones and smart phones
• Portable instruments, MP3 players
• Handheld devices including medical handhelds