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HV9903 数据表 (PDF) - Supertex, Inc

HV9903 Datasheet PDF - Supertex, Inc
部件名 HV9903
下载  HV9903 下载

文件大小   326.78 Kbytes
  12 Pages
制造商  SUTEX [Supertex, Inc]
网页  http://www.supertex.com
标志 SUTEX - Supertex, Inc
功能描述 White LED Driver

HV9903 Datasheet (PDF)

Go To PDF Page 下载 数据表
HV9903 Datasheet PDF - Supertex, Inc

部件名 HV9903
下载  HV9903 Click to download

文件大小   326.78 Kbytes
  12 Pages
制造商  SUTEX [Supertex, Inc]
网页  http://www.supertex.com
标志 SUTEX - Supertex, Inc
功能描述 White LED Driver

HV9903 数据表 (HTML) - Supertex, Inc

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HV9903 产品详情

Description
The Supertex HV9903 is a fixed frequency DC-DC boost converter designed for driving Light Emitting Diodes (LEDs) with constant current where the light intensity is proportional to the current through them. The input supply voltage range into the device (VDD) is 2.6 to 4.6V. Operation of the driver at lower voltages is possible as long as a 2.6–4.6V low current supply is available for the HV9903. The device uses a single inductor and a minimum number of passive components. The device can be enabled/disabled via the SHDN pin.

Features
❑ Power efficiency of up to 85%
❑ Drives up to 6 White LEDs
❑ 2.6V to 4.6V Supply power stage can operate at 1.8V (see page 8)
❑ Built-in Soft Start
❑ DC and PWM Dimming Control
❑ Built-in Open LED protection
❑ Open LED indicator (via RSET)
❑ 1.2MHz Fixed Switching Frequency
❑ 500nA max leakage current when disabled
❑ No leakage current path through LEDs when disabled
❑ Resistor-programmable LED Current
❑ Small 6-lead MLP (3mm x 3mm) package (similar to 6-pin SOT-23)

Applications
❑ Color LCD Backlighting
❑ Cell phones, smart phones
❑ PDAs, pocket PCs
❑ Organizers
❑ Digital Cameras
❑ MP3 Players




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