12µV, Low-Noise, 500mA LDO Linear Regulator

The MAX25300A/MAX25300B are low-noise linear regulators that deliver up to 500mA of output current with only 12μVRMS of output noise from 10Hz to 100kHz. These regulators maintain ±1% output accuracy over a wide input voltage range, requiring only 100mV of input-to-output headroom at full load. The 365μA no-load supply current is independent of dropout voltage.

The MAX25300A has nine pin-selectable output voltages: 1.2V, 1.5V, 1.8V, 2.5V, 3.0V, 3.1V, 3.3V, 4.0V, and 5V. The MAX25300B has a resistor-adjustable output voltage in the 0.6V to 5.3V range. The MAX25300B also includes an active-high POK output.

The MAX25300A/MAX25300B are offered in an 8-pin TDFN package.

APPLICATIONS

* Automotive Electronics

* Audio Systems

* High-Resolution Data Acquisition Systems

* 1.7V to 5.5V Input Voltage Range

* 0.6V to 5.3V Output Voltage Range

* 12μVRMS Output Noise, 10Hz to 100kHz

* 365μA Operating Supply Current

* 70dB PSRR at 10kHz

* 500mA Maximum Output Current

* ±1% DC Accuracy over Load, Line, and Temperature

* 100mV (max) Dropout at 500mA Load (3.6VIN)