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SD6303E40C Scheda tecnica(PDF) 1 Page - SHOUDING Shouding Semiconductor

Il numero della parte SD6303E40C
Spiegazioni elettronici  PFM boost DC-DC converter
PDF  13 Pages
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Produttore elettronici  SHOUDING [SHOUDING Shouding Semiconductor]
Homepage  http://shouding.net/
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SD6303E40C Scheda tecnica(HTML) 1 Page - SHOUDING Shouding Semiconductor

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SD6303_
SD6303
SD6303
PFM 升压 DC-DC 变换器
1
DS03CN
典型应用电路图
LX
VOUT
GND
EXT
VOUT
GND
LX
EN
M1
CIN
VOUT
VIN
L1
D1
COUT
VOUT
COUT
VIN
L1
CIN
D1
(a) 内置 MOS 开关管
(b) 外置 MOS 开关管
图 1:
典型应用电路图
概述
系列产品是一种高效率、低
纹波、工作频率高的 PFM 升压 DC-DC 变
换器。
系列产品仅需要四个外围元
器件,就可完成将低输入的电池电压变换
升压到所需的工作电压,非常适合于便携
式 1~4 节普通电池应用的场合。
电路采用了高性能、低功耗的参考电
压电路结构,同时在生产中引入修正技术,
保证了输出电压的高输出精度及低温度漂
移。输出电压精度优于±2.5%,最高效率
可达 89%。
系列产品总共有四种封装形
式:SOT23、SOT23-5、SOT89-3 和 TO-92。
其中,SOT23-5 封装内置了 EN 使能端,
可控制变换器的工作状态,当 EN 使能端
输入为低电平时,芯片处于关断省电状态,
功耗降至最小。
特点
 最高工作频率:300KHz
 输出电压:2.5V~5.0V(步进 0.1V)
 低起动电压:0.8V(1mA)
 输出精度:优于±2.5%
 最高效率:89%
 输出电流:大于 300mA (Vi=2.5V,
Vo=3.3V)
 低纹波,低噪声
 只需四个外围元件
应用领域
 1~3 个干电池的电子设备。
 LED 手电筒、LED 灯、血压计
 电子词典、汽车防盗器、充电器、VCR、
PDA 等手持电子设备
SD6303
SD6303
SD6303
SHOUDING
www.shouding.net


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