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MAX38907/MAX38908
4A, High-Performance
LDO Linear Regulators
General Description
Benefits and Features
The MAX38907/MAX38908 are fast transient response,
high-PSRR nMOS linear regulators that deliver up to 4A
load current.
● 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
• 4A Maximum Output Current
These regulators support a wide input supply range from
0.9V up to 5.5V, and BIAS voltage range from 2.7V to 20V
to provide wider supply options in a variety of applications.
Output accuracy of ±1% 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 a value in the range of 0.6V to
5.0V to accommodate customers that desire to specify a
single LDO in the BOM for multiple voltage rails.
• 51mV Dropout at 4A Load Current
• 1.6mA Operating BIAS Supply Current
● Reduces Noise and Improves Accuracy
• ±1% DC Accuracy over Load, Line, and
Temperature
• 28mV, 4A Load-Transient Excursion
• 78dB BIAS PSRR at 10kHz
• 52dB IN PSRR at 10kHz at 300mV Input-to-Output
Headroom
The MAX38907 is configurable to one of 27 output volt-
ages using three digital configuration pins. Additionally,
each output voltage selection can be adjusted ±5% for
margining. The output voltage on the MAX38908 can be
adjusted to a value in the range of 0.6V to 5.0V by using
two external feedback resistors. These LDOs are fully pro-
tected from damage by internal circuitry that provides pro-
grammable inrush current limiting, output overcurrent limit-
ing, reverse-current limiting, and thermal overload protec-
tion.
● 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, 20-Pin (5mm x 5mm)
TQFN, and 5 x 3 Bump, 0.4mm Pitch WLP
• -40°C to +125°C Operating Temperature
The MAX38907 is offered in a 20-pin, 5mm x 5mm TQFN
package, while the MAX38908 is offered in 5 x 3 bump,
0.4mm pitch WLP and 14-pin, 3mm x 3mm TDFN pack-
ages.
Ordering Information appears at end of data sheet.
Applications
● FPGAs and DSPs
● Medical, Audio, and Instrumentation
● Server μPs
● Portable Cameras
● PLCs
● Base Stations
19-100604; Rev 2; 11/20