SGM3141B 데이터 시트보기 (PDF) - Unspecified

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SGM3141B

700mA Buck/Boost Charge Pump LED Driver

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SGM3141B

EVALUATION BOARD LAYOUT

700mA Buck/Boost

Charge Pump LED Driver

Printed Circuit Board Layout Recommendations

Follow the PCB layout guidelines for optimal performance:

1. Place the flying capacitor CF as close to the chip as possible; otherwise 2× mode performance will be compromised.

Also keep analog components away from this capacitor.

2. Place input and output decoupling capacitors as close to the chip as possible to reduce switching noise and output

ripple.

3. The power traces, consisting of the VIN/GND trace, the VOUT trace and the WLED trace should be kept short and

wide. Also minimize the feedback loop area (consisting of WLED/FB) small.

4. Connect the exposed pad to the GND plane to achieve the best power dissipation.

SG Micro Corp

11

www.sg-micro.com

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