11µV Low-Noise, 500mA LDO Linear Regulators with Low-Power Mode

The MAX38911/MAX38912 are low-noise, high-PSRR PMOS linear regulators that deliver up to a 500mA load current with only 11µVRMS of output noise from 10Hz to 100kHz.

The regulators are fully protected from damage by internal circuitry that provides programmable inrush current limiting, output overcurrent limiting, reverse current limiting, and thermal overload protection. MAX38911/MAX38912 has 800Ω active discharge feature to quickly discharge output capacitors.

The MAX38911 is available in WLP and TDFN packages and are default factory preprogrammed to an output voltage of 1.8V. Custom fixed-output voltage levels in the range of 0.8V to 5.0V in 50mV steps are also available, see Ordering Information.

MAX38912 provides enhanced flexibility with adjustable output voltage in the range of 0.8V to 5.0V by using two external feedback resistors.

The MAX38911ANT is packaged in a 1.42mm × 0.83mm, 3 × 2, 6-bump, 0.4mm pitch WLP, while the MAX38911ATA and MAX38912ATA are packaged in an 8-pin, 2mm × 2mm TDFN.

Applications

* Digital Camera and Audio Devices

* High-Performance Sensors for Portable Applications

* Imaging and High-Frequency Sensors

* IoT Sensors

* Mobile Phones

* Portable and Battery-Powered Equipment

* Deliver Wide, Flexible Operating Range

* 1.7V to 5.5V Input Supply Range

* 0.8V to 5.0V Output Voltage Range

* 500mA Maximum Output Current

* 24.3mV Dropout at 500mA Load and 5.0V Input Voltage

* 19.2µA No-Load Supply Current in Low-Power Mode

* 332µA Supply Current in Normal Mode

* <1µA Shutdown Supply Current

* Reduce Noise and Improve Accuracy

* 11µVRMS Output Noise, 10Hz to 100kHz

* 70dB PSRR at 10kHz, 250mA Load Current, and 300mV Input and Output Voltage Separation

* ±1% DC Accuracy overload, Line, and Temperature Variations