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| LDA101资料 | |
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LDA101 PDF Download |
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File Size : 116 KB
Manufacturer:VISHAY Description:The LM3519 is a step-up converter for white LED applica- tions that uses a unique and proprietary pulse frequency modulation (PFM) architecture to optimize high efficiency at high frequency operation. Unlike most PFM architecture implementations, the LM3519s unique architectural imple- mentation results in non-pulse skipping variable frequency operation. The regulator is forced to operate at the edge of Continous Conduction Mode (CCM). The error amplifier will set the end of the on-time (IPEAK of inductor) based on the load (LEDs) current. During this operation, the inductor cur- rent ramps up and reaches a peak current at end of the on-time. At this point, the internal power switch is turned off until the inductor current reaches zero, and the cycle repeats again. The switching frequency is set based on the charge (on-time) and discharge(off-time) of the inductor current. The frequency can range between 2MHz to 8MHz over the op- erating input range. The LM3519 operation can be best understood through an examination of the block diagram in Figure 2. When LED |
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| 1PCS | 100PCS | 1K | 10K | ||
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型 号：LDA101 厂 家：VISHAY 封 装：DIP/SOP 批 号：07+ 数 量：2000 说 明：全新库存，专业光耦继电器供应商 |
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运 费： 所在地： 新旧程度： |
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| 联系人：林小姐 |
| 电 话：086-755-23815997 |
| 手 机：13632589437 |
| QQ：1097182423,2851921558 |
| MSN： |
| 传 真：0755-23815984 |
| EMail：joylin@hongbotong.com |
| 公司地址： 深圳市福田区深南中路3006号佳和大厦B座2007室 |
