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參數(shù)資料
| 型號： | YB1520 |
| 廠商： | YOBON TECHNOLOGIES, INC. |
| 元件分類： | DC/DC變換器 |
| 英文描述： | High Power Step-up DC-DC Converter, White LED Driver |
| 中文描述： | 高功率升壓型DC - DC轉(zhuǎn)換器，白光LED驅(qū)動器 |
| 文件頁數(shù)： | 1/18頁 |
| 文件大?。?/td> | 1900K |
| 代理商： | YB1520 |
YB1520
High Power Step-up DC-DC Converter, White LED Driver
YB1520 MRev.1.2
www.yobon.com.tw
1
Description
The YB1520 is a step-up DC-DC converter
;
operates as current source to drive up to 9
white LEDs in series or 30 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 9 white LEDs from
a single Li-Ion battery and drive up to 30 white
LEDs from a 5V. The wide input voltage range
from 2.7V to 16V is ideal for portable and
automotive (5V/12V) 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.
Typical Application Circuit
Features
Built-in internal switch
Adjustable output voltage up to 35V
2.7V to 16V input range
<1uA shutdown current
High efficiency
Drives up to 30 white LEDs in
Parallel/series
Over voltage protection
Small 5-Lead SOT-23 package
Applications
LCD Display Module
White LED Backlighting
PDAs, GPS terminals
Digital Cameras
Cellular Phone
Electronic Books
Portable Applications
Figure 1: Typical Application Circuit
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| YB1520ST25 | 制造商:YOBON 制造商全稱:YOBON 功能描述:High Power Step-up DC-DC Converter, White LED Driver |
| YB1521 | 制造商:YOBON 制造商全稱:YOBON 功能描述:High Power Step-Up DC-DC Converter & WLED Driver |
| YB1521ST25 | 制造商:YOBON 制造商全稱:YOBON 功能描述:High Power Step-Up DC-DC Converter & WLED Driver |
| YB1522 | 制造商:YOBON 制造商全稱:YOBON 功能描述:Step-up DC-DC Converter White LED Driver |
| YB1522ST25 | 制造商:YOBON 制造商全稱:YOBON 功能描述:Step-up DC-DC Converter White LED Driver |
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