• 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 30μV_RMS @ 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 (RoHS compliant)

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 high-PSRR 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.

The quiescent current is typically only 45μA with both LDOs enabled and active. Separate enable pins control each individual LDO output. When both enable pins are low, the device is in shutdown, typically drawing less than 0.1μA. Several combinations of voltage outputs are standard.

Output voltage options for each LDO range from 1.5V to 3.3V. Other output voltage options may be available upon request.

• PDAs, Cell Phones and Smart Phones
• Portable Instruments, MP3 Players
• Handheld Devices including Medical Handhelds