2A High-Performance nMOS LDO Linear Regulator

The MAX38909 is a fast transient response, high PSRR nMOS linear regulator that delivers up to 2A of load current.

The regulator supports a wide input supply range from 0.9V to 5.5V, and BIAS voltage range from 2.7V to 20V to provide wider supply options in a variety of applications. ±1% output accuracy is maintained over line, load, and temperature variations, requiring only 300mV of input-to-output headroom at full load for a good PSRR. The output voltage can be adjusted to accommodate customers that desire to specify a single LDO in the BOM for multiple voltage rails.

The output voltage on the MAX38909 is programmed to a value in the range of 0.6V to 5.0V by using two external feedback resistors.

The LDO is fully protected from damage by internal circuitry that provides programmable inrush current limiting, output overcurrent limiting, reverse-current limiting, and thermal overload protection.

The MAX38909 is offered in 14-pin, 3mm x 3mm TDFN and 5 x 3 bump, 0.4mm pitch WLP packages.

Applications

* Base Stations * FPGAs and DSPs * Medical, Audio, and Instrumentation * PLCs * Portable Cameras * Server Microcontrollers

* Delivers Flexible Operating Range

* 0.9V to 5.5V Input Voltage Range

* 2.7V to 20V BIAS Voltage Range

* 0.6V to 5.0V Programmable Output Voltage

* 2A Maximum Output Current

* 27mV Dropout at 2A Load Current

* 1.6mA Operating BIAS Supply Current

* Reduces Noise and Improves Accuracy

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

* 15mV 2A Load Transient Excursion

* 52dB IN PSRR at 10kHz at 300mV Input-to-Output Headroom

* Enables Ease-of-Use and Robust Protection

* Stable with 10µF (Minimum) Output Capacitance

* Programmable Soft-Start Rate

* Overcurrent and Overtemperature Protection

* Output-to-Input Reverse Current Protection

* Power-OK Status Pin

* Reduces Size, Improves Reliability

* 14-Pin (3mm x 3mm) TDFN and 5 x 3 Bump, 0.4mm Pitch WLP Packages

* -40°C to +125°C Operating Temperature