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YB1520 データシート (PDF) - YOBON TECHNOLOGIES,INC.

YB1520 Datasheet PDF - YOBON TECHNOLOGIES,INC.
部品番号 YB1520
ダウンロード  YB1520 ダウンロード

ファイルサイズ   794.28 Kbytes
ページ   10 Pages
メーカー  YOBON [YOBON TECHNOLOGIES,INC.]
ホームページ  http://www.yobon.com.tw
Logo YOBON - YOBON TECHNOLOGIES,INC.
部品情報 Step-up DC-DC Converter, White LED Driver

YB1520 Datasheet (PDF)

Go To PDF Page ダウンロード データシート
YB1520 Datasheet PDF - YOBON TECHNOLOGIES,INC.

部品番号 YB1520
ダウンロード  YB1520 Click to download

ファイルサイズ   794.28 Kbytes
ページ   10 Pages
メーカー  YOBON [YOBON TECHNOLOGIES,INC.]
ホームページ  http://www.yobon.com.tw
Logo YOBON - YOBON TECHNOLOGIES,INC.
部品情報 Step-up DC-DC Converter, White LED Driver

YB1520 データシート (HTML) - YOBON TECHNOLOGIES,INC.

YB1520 Datasheet HTML 1Page - YOBON TECHNOLOGIES,INC. YB1520 Datasheet HTML 2Page - YOBON TECHNOLOGIES,INC. YB1520 Datasheet HTML 3Page - YOBON TECHNOLOGIES,INC. YB1520 Datasheet HTML 4Page - YOBON TECHNOLOGIES,INC. YB1520 Datasheet HTML 5Page - YOBON TECHNOLOGIES,INC. YB1520 Datasheet HTML 6Page - YOBON TECHNOLOGIES,INC. YB1520 Datasheet HTML 7Page - YOBON TECHNOLOGIES,INC. YB1520 Datasheet HTML 8Page - YOBON TECHNOLOGIES,INC. YB1520 Datasheet HTML 9Page - YOBON TECHNOLOGIES,INC. YB1520 Datasheet HTML 10Page - YOBON TECHNOLOGIES,INC.

YB1520 製品詳細

Description
The YB1520 is a step-up DC-DC converter; operates as current source to drive up to 18 white LEDs in parallel/series configuration. Series connecting of the LEDs provides identical LED currents resulting in uniform brightness and eliminating the need for ballast resistors. The light intensity of these LEDs is proportional to the current passing through them. The YB1520 switches at a fixed frequency of 700KHz, allowing the use of tiny, low profile inductors and capacitors to minimize footprint and cost in space consideration applications for cellular phone backlighting or other hand held equipment.
The YB1520 can drive up to 18 white LEDs from a 4.5V supply. The wide input voltage range from 2.7V to 7V is ideal for portable (5V) applications with higher conversion efficiency. To control LED brightness, the LED current can be pulsed by applying a PWM (pulse width modulated) signal with a frequency range of 100Hz to 50KHz to the CTRL pin.
YB1520 has integrated Over Voltage Protection that prevents damage to the device in case of a high impedance output due to faulty LED or open circuit caused by abnormal conditions.

Features
■ Built-in Internal Switch
■ 2.7V to 7V Input Range
■ <1uA Shutdown Current
■ High Efficiency
■ Drives up to 3S2P to 3S6P White LEDs (VIN at 3.5V to 5V)
■ Over Voltage Protection 30V
■ Small 5-Lead SOT-23 Package

Applications
■ LCD Display Module
■ White LED Backlighting
■ PDAs, GPS terminals
■ Digital Cameras
■ Cellular Phone
■ Electronic Books
■ Portable Applications




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