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Analog Devices MAX38903BATB+ — Power Management (PMIC / Gate Driver)

MAX38903BATB+ LDO Regulator, 1A, 0.6V-5V, 10-TDFN, PSRR 70dB

MPNMAX38903BATB+
End of Life

Analog Devices MAX38903BATB+, LDO voltage regulator, positive programmable output, 1A, 0.6V to 5V, PSRR 70dB ~ 40dB (1kHz ~ 1MHz), dropout 0.3V @ 1A, 10-TDFN-EP, -40°C to 125°C.

$3.45Ref. price · indicative, final on quote
Packaging10-WFDFN Exposed Pad
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

MAX38903BATB+ specifications
ParameterValue
Output typeProgrammable
MountingSurface Mount
Voltage - input5.5V
Voltage dropout0.3V @ 1A
Voltage - output5V
Voltage - output (Min (Fixed))0.6V
Output current1A
Current - quiescent2 mA
Operating temperature-40°C ~ 125°C (TJ)
PSRR70dB ~ 40dB (1kHz ~ 1MHz)
PackageTube
Case10-WFDFN Exposed Pad
Control featuresEnable
Protection featuresOver Current, Over Temperature, Reverse Polarity
Number of regulators1
Output configurationPositive

Product details

Rated for -40°C to 125°C junction temperature, the MAX38903BATB+ suits outdoor telecom, automotive under-hood, and factory-floor environments. The 10-TDFN exposed-pad package (3x3 mm body) aids thermal conduction to the PCB ground plane.

Built-in overcurrent, overtemperature, and reverse-polarity protection cover the common fault conditions in point-of-load designs. An enable pin allows the regulator to be sequenced or shut down for power savings. The 2 mA quiescent current is typical for a 1A LDO with this protection suite — not a micropower part, but acceptable for always-on rails where the load current dominates the power budget.

Frequently asked questions

Does MAX38903BATB+ have overcurrent protection?

Yes, it includes overcurrent protection as part of its protection feature set, along with overtemperature and reverse polarity protection.

Is MAX38903BATB+ a suitable replacement for MAX38902?

The MAX38903BATB+ is a higher-current variant (1A vs the MAX38902's lower rating) in the same family. Pin compatibility should be verified against the respective datasheets, but the output voltage range and package are similar. For a direct cross, confirm the specific MAX38902 ordering code's output current and package.