ISL9003A
Low Noise LDO with Low IQ, High PSRR
Key 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: 31µA
- 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 or 6 Ld µTDFN Package
- -40°C to +85°C Operating Temperature Range
- Pb-Free (RoHS compliant)
Description
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 20µVRMS (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.
Applications
- PDAs, Cell Phones and Smart Phones
- Portable Instruments, MP3 Players
- Handheld Devices Including Medical Handhelds
