Skip to main content
Log in
ROHM Semiconductor BD00KA5WF-E2 — Analog & Data Acquisition

ROHM BD00KA5WF-E2 LDO Regulator, Adjustable 500 mA, 8-SOIC

MPNBD00KA5WF-E2
End of Life

ROHM BD00KA5WF-, adjustable positive LDO regulator, 500 mA output, 50 dB PSRR at 120 Hz, 0.2 V dropout at 200 mA, 1 V to 4 V output range, 5.5 V max input, -40°C to 105°C, 8-SOIC surface mount.

$1.69Ref. price · indicative, final on quote
ROHM Semiconductor BD00KA5WF-E2 datasheet (PDF)
Packaging8-SOIC (0.173", 4.40mm Width)
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

BD00KA5WF-E2 specifications
ParameterValue
Output typeAdjustable
MountingSurface Mount
Voltage - input5.5V
Voltage dropout0.2V @ 200mA
Voltage - output4V
Voltage - output (Min (Fixed))1V
Output current500mA
Current - supply550 µA
Current - quiescent550 µA
Operating temperature-40°C ~ 105°C
PSRR50dB (120Hz)
PackageTape & Reel (TR); Cut Tape (CT)
Case8-SOIC (0.173\", 4.40mm Width)
Control featuresEnable
Protection featuresOver Current, Over Temperature
Number of regulators1
Output configurationPositive

Product details

Adjustable LDO for 5 V rails — what the 50 dB PSRR tells you

The BD00KA5WF-E2: The BD00KA5WF-: The ROHM BD00KA5WF- is a single-output adjustable positive LDO regulator in an 8-SOIC package, delivering up to 500 mA from a 5.5 V maximum input rail. Its 50 dB PSRR at 120 Hz means it knocks down mains-frequency ripple by a factor of about 316 — relevant if you are feeding a clean analog rail from a switching preregulator or a lightly filtered 5 V bus.

Output range and dropout — where the headroom lives

Output is adjustable from 1 V up to 4 V via an external resistor divider. The maximum dropout is 0.2 V at 200 mA. Quiescent current maxes at 550 µA, and the part includes enable control plus over-current and over-temperature protection.

Frequently asked questions

What is a suitable replacement for BD00KA5WF-?

The ROHM BA33BC0WFP- is a fixed 3.3 V output LDO with 55 dB PSRR at 120 Hz and 1 A output, but it is not a direct adjustable replacement — the BD00KA5WF-'s adjustable output from 1 V to 4 V covers a wider set of rail voltages. If you need a fixed 3.3 V rail at higher current, the BA33BC0WFP- is a functional alternative.