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7135 350mA Power LED Driver - SP01.jp

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<strong>7135</strong> 上海毅钧商贸有限公司 http://www.ic108.com<br />

B. VF vs. IF<br />

圖三 Edixeon 1W Emitter / Lux-IF 之關係圖<br />

圖四與圖五為 Lumi<strong>LED</strong>s 與 Edison 公司的 <strong>Power</strong> <strong>LED</strong> IF-VF 之關係圖。圖四與圖<br />

五顯示 <strong>LED</strong> 的 VF 值會隨著流過的電流而改變。工作在 100mA時,順向電壓 (Forward<br />

Voltage, VF) 為 3.0V。工作在 350毫安培時,VF= 3.5V。可以得知流過 <strong>LED</strong> 的電流越<br />

大,<strong>LED</strong> 的 VF 也會跟著增加。因此,當 <strong>LED</strong> 驅動電流增加時,不僅亮度會增加,<br />

VF 也會增加。<br />

圖四 Lumi<strong>LED</strong>-DS47 / IF-VF 之關係圖<br />

Tel:021-54253565 Fax:021-54253569 Email:ic108@163.com

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