データシートサーチシステム |
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LM3552 データシート(PDF) 10 Page - Texas Instruments |
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LM3552 データシート(HTML) 10 Page - Texas Instruments |
10 / 23 page LM3551, LM3552 SNVS371C – AUGUST 2005 – REVISED MARCH 2011 www.ti.com Soft-Start The LM3551 and LM3552 have a soft-start pin that can be used to limit the inductor inrush current on start-up. The external SS pin is used to tailor the soft-start for a specific application but is not required for all applications and can be left open when not needed. When used, a current source charges the external soft-start capacitor, CSS, forcing the internal reference to ramp-up at a user determined rate. Table 1. Typical Start-Up TimesVIN = 3.6V, TA = +25°C CSS (µF) Load (mA) Start-Up Time (msec.) Sharp LED @ 75mA Torch 3 Sharp LED @ 250mA Flash 8 0.1 Lumiled LED @ 200mA Torch 1.6 Lumiled LED @ 700mA Flash 6 Sharp LED @ 75mA Torch 12 Sharp LED @ 250mA Flash 35 0.47 Lumiled LED @ 200mA Torch 6 Lumiled LED @ 700mA Flash 35 Sharp LED @ 75mA Torch 25 Sharp LED @ 250mA Flash 75 1.0 Lumiled LED @ 200mA Torch 30 Lumiled LED @ 700mA Flash 70 10 Submit Documentation Feedback Copyright © 2005–2011, Texas Instruments Incorporated Product Folder Links: LM3551 LM3552 |
同様の部品番号 - LM3552 |
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同様の説明 - LM3552 |
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