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.
The ISL9003A is a high‑performance low‑noise LDO regulator delivering up to 150 mA continuous output current. It offers a very high PSRR (>90 dB at 1 kHz), low dropout voltage (typical 200 mV @ 150 mA) and ultra‑low quiescent current (31 pA typical).
The document includes ordering information, absolute maximum ratings, detailed electrical specifications, start‑up characteristics, pin descriptions, typical applications and package dimensions for the SC‑70 and uTDFN variants.
| Continuous Output Current | 150 mA |
|---|---|
| Low Dropout Voltage (typical) | 200 mV @ 150 mA |
| Power Supply Rejection Ratio | >90 dB @ 1 kHz |
| Output Noise (typical) | 20 µV RMS @ 100 µA (1.5 V) |
| Quiescent Current (no‑load) | 31 pA (typical) |
| Input Voltage Range | 2.3 V to 6.5 V |
The regulator can deliver a continuous output current of 150 mA.
The typical quiescent current is 31 pA.
It operates from 2.3 V up to 6.5 V input.
The device is available in a 5‑lead SC‑70 package and a 6‑lead uTDFN package.