SC1458AWLTRT 데이터 시트보기 (PDF) - Semtech Corporation

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SC1458AWLTRT

Dual Output Low Noise LDO Linear Regulator

Semtech Corporation 

SC1458

Applications Information (continued)

PCB Layout Considerations

While layout for linear devices is generally not as critical

as for a switching application, careful attention to detail

will ensure reliable operation.

• Attach the part to a large copper footprint,

particularly the thermal pad on the underside

of the device, to enable better heat transfer,

particularly on PCBs where there are

internal power and ground planes.

• Place the input, output, and bypass capacitors

close to the device for optimal transient

response and device behavior.

• Connect all ground connections directly to the

ground plane whenever possible to minimize

ground potential differences on the PCB.

• Ensure that the feedback resistors are placed as

close as possible to the feedback pins.

COUTB

CIN

SC1458B

CBYP

COUTA

11

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