ISL9012 is a high performance dual LDO from ISL. It has a low standby current and high-PSRR. It can source 150mA current from Channel 1 and 300mA from Channel 2. The output voltage range is 1.5V to 3.3V. It supports 10µF to 10µF capacitance with ESR up to 200mΩ. It has a POR function for the VO2 output. The POR delay for VO2 can be externally programmed by connecting a timing capacitor to the CPOR pin. It also has a reference bypass pin for connecting a noise-filtering capacitor for low noise and high PSRR applications. The quiescent current is typically only 45µA with both LDO’s 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.
The ISL9012 dual LDO integrates two high‑performance regulators (VO1 and VO2) with separate enable pins, a programmable POR function and soft‑start circuitry. It is designed for low‑noise, high‑PSRR applications such as portable instruments, handheld devices and medical hand‑helds.
The device operates from a 2.3 V to 6.5 V supply, supports output voltages from 1.5 V to 3.3 V (custom options available), and is supplied in a 10‑lead 3 × 3 mm DFN package. Typical specifications include 45 µA quiescent current, 120 mV dropout at 150 mA, and 30 µVRMS output noise at 100 Hz.
| VO1 Output Current | 150 mA |
|---|---|
| VO2 Output Current | 300 mA |
| Quiescent Current (both LDOs on) | 45 µA |
| Input Voltage Range | 2.3 V to 6.5 V |
| Dropout Voltage (typical at 150 mA) | 120 mV |
| Output Noise (typical at 1.5 V) | 30 µVRMS @ 100 Hz |
| Power‑Supply Rejection Ratio | 70 dB @ 1 kHz |
| Operating Temperature Range | -40 °C to +85 °C |
| Package | 10‑lead 3 × 3 mm DFN |
The typical quiescent current is only 45 µA with both LDOs on.
It operates from 2.3 V up to 6.5 V.
VO1 can source up to 150 mA and VO2 up to 300 mA.
The dropout voltage is typically about 120 mV at 150 mA.