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MAX38909
2A High-Performance
nMOS LDO Linear Regulator
General Description
Benefits and Features
The MAX38909 is a fast transient response, high PSRR
nMOS linear regulator that delivers up to 2A of load cur-
rent.
● 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
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 volt-
age rails.
• 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
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.
● Enables Ease-of-Use and Robust Protection
• Stable with 10μF (Minimum) Output Capacitance
• Programmable Soft-Start Rate
The LDO is fully protected from damage by internal circuit-
ry that provides programmable inrush current limiting, out-
put overcurrent limiting, reverse-current limiting, and ther-
mal overload protection.
• 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
The MAX38909 is offered in 14-pin, 3mm x 3mm TDFN
and 5 x 3 bump, 0.4mm pitch WLP packages.
• -40°C to +125°C Operating Temperature
Applications
● FPGAs and DSPs
● Medical, Audio, and Instrumentation
● Server Microcontrollers
● Portable Cameras
● PLCs
Ordering Information appears at end of data sheet.
● Base Stations
19-100950; Rev 1; 11/20