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SE1025 Datasheet(PDF) 5 Page - Seaward Electronics Inc.

Part # SE1025
Description  40V 500mA 凉?뀽?딯ED 瘟껇돯要긷뒯?②컘?
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Manufacturer  SEAWARD [Seaward Electronics Inc.]
Direct Link  http://www.seawardinc.com
Logo SEAWARD - Seaward Electronics Inc.

SE1025 Datasheet(HTML) 5 Page - Seaward Electronics Inc.

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Rev1.0
Preliminary and all contents are subject to change without prior notice.
© Seaward Electronics, Inc., • www.seawardinc.com • Page 6
9/4/2012
SE1025
40V 500mA 开关型 LED 调色驱动器调色
Applications Information(应用信息)
 Operation Description
 工作模式
SE1025 内置 4 种调色模式,并且依靠 ST 端的电平状态来切换,ST 持续置低 200mS
以上认为是以此有效的置低,置高则当即生效。
当 ISET 端接有 100K 以下的电阻到地
系统上电且 ST 为高,L1 接通,L2 关断
ST 第一次置低后再次置高,L1 关断,L2 接通
ST 第二次置低后再次置高,L1,L2,同时接通
ST 第三次置低后再次置高,L1、L2 都进入夜灯模式
ST 第四次置低后再次置高,循环回 L1 接通,L2 关断状态
夜灯电流设置:
如果 ISET 端悬空或者电阻大于 500K
系统上电且 ST 为高,L1 接通,L2 关断
ST 第一次置低后再次置高,L1 关断,L2 接通
ST 第二次置低后再次置高,L1,L2,同时接通
ST 第三次置低后再次置高,循环回 L1 接通,L2 关断状态
 过热保护
当芯片内部温度达到 115℃,SE1025 关断 L1,L2 功率 MOS,包括夜灯模式,直到
芯片内部温度降至 105℃以下,并且经过客户手动开关动作,即 VIN 重新上电后解除。
 短路保护
当芯片内部检测到 L1,L2 总电流大于 2.5A 且持续 1mS 以上,即刻关断 L1,L2 功率


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