Datasheet > YB1520ST25

YB1520ST25

更新时间： 2024-02-05 14:56:42

品牌	Logo	应用领域
裕邦科技 - YOBON		驱动器转换器 DC-DC转换器
页数	文件大小	规格书
18页	1892K
描述
High Power Step-up DC-DC Converter, White LED Driver

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YB1520ST25 技术参数

生命周期：	Contact Manufacturer	Reach Compliance Code：	unknown
风险等级：	5.76	接口集成电路类型：	LED DISPLAY DRIVER
Base Number Matches：	1

YB1520ST25 数据手册

YB1520

High Power Step-up DC-DC Converter, White LED Driver

Description

Features

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.

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

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

Figure 1: Typical Application Circuit

YB1520 MRev.1.2

www.yobon.com.tw

12 3 4 5 6 7...18

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