• 当前位置:
  • 首页
  • >
  • PDF资料
  • >
  • AAT3340 PDF文件及第11页内容在线浏览

AAT3340

AAT3340首页预览图
型号: AAT3340
PDF文件:
  • AAT3340 PDF文件
  • AAT3340 PDF在线浏览
功能描述: High Efficiency 1x/1.5x Charge Pump
PDF文件大小: 989.76 Kbytes
PDF页数: 共14页
制造商: ANALOGICTECH[Advanced Analogic Technologies]
制造商LOGO: ANALOGICTECH[Advanced Analogic Technologies] LOGO
制造商网址: http://www.analogictech.com
捡单宝AAT3340
PDF页面索引
120%
AAT3340
High Efficiency 1x/1.5x Charge PumpChargePump
TM
PRODUCT DATASHEET
3340.2008.07.1.1 11
www.analogictech.com
Equivalent Series Resistance
ESR is an important characteristic to consider when
selecting a capacitor. ESR is a resistance internal to a
capacitor that is caused by the leads, internal connec-
tions, size or area, material composition, and ambient
temperature. Capacitor ESR is typically measured in mil-
liohms for ceramic capacitors and can range to more
than several ohms for tantalum or aluminum electrolytic
capacitors.
Ceramic Capacitor Materials
Ceramic capacitors less than 0.1F are typically made
from NPO or C0G materials. NPO and C0G materials
have tight tolerance and are stable over temperature.
Capacitors with large values are typically composed of
X7R, X5R, Z5U, or Y5V dielectric materials.
Large ceramic capacitors, greater than 2.2F, are often
available in low-cost Y5V and Z5U dielectrics, but capac-
itors greater than 1F are usually not required for
AAT3340 applications.
Capacitor area is another contributor to ESR. Capacitors
that are physically large will have a lower ESR when
compared to an equivalent material smaller capacitor.
These larger devices can improve circuit transient
response when compared to an equal value capacitor in
a smaller package size.
Thermal Protection
The AAT3340 has a built-in thermal protection circuit
that will shut down the charge pump if the die tempera-
ture rises above the thermal limit, as is generally the
case during short-circuit event of the V
OUT
pin.
Evaluation Board Layout
When designing a PCB for the AAT3340, the key require-
ments are:
1. Place the two flying capacitors, C1 and C2, as close
to the chip as possible, otherwise the 1.5X mode
performance will be compromised.
2. Place the input and output decoupling capacitors as
close to the chip as possible to reduce switching
noise and output ripple.
购买、咨询产品请填写询价信息:(3分钟左右您将得到回复)
询价型号*数量*批号封装品牌其它要求
删除
删除
删除
删除
删除
增加行数
  •  公司名:
  • *联系人:
  • *邮箱:
  • *电话:
  •  QQ:
  •  微信:

  • 关注官方微信

  • 联系我们
  • 电话:13714778017
  • 周一至周六:9:00-:18:00
  • 在线客服:

天天IC网由深圳市四方好讯科技有限公司独家运营

天天IC网 ( www.ttic.cc ) 版权所有©2014-2023 粤ICP备15059004号

因腾讯功能限制,可能无法唤起QQ临时会话,(点此复制QQ,添加好友),建议您使用TT在线询价。

继续唤起QQ 打开TT询价