5秒后页面跳转
捷配首页

Datasheet > 电源电路 > 开关式稳压器或控制器> AAT1231ITP-T1
AAT1231ITP-T1 PDF预览

AAT1231ITP-T1

更新时间： 2024-01-13 08:42:45
品牌 Logo 应用领域
ANALOGICTECH 转换器稳压器开关式稳压器或控制器电源电路开关式控制器
页数 文件大小 规格书
27页 1554K
描述
Step-Up DC/DC Converters for White LED Backlight Applications

阅读下载

获取价格

AAT1231ITP-T1 技术参数

生命周期：Obsolete包装说明：SOJ,
Reach Compliance Code：unknownECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.82
Is Samacsys：N模拟集成电路 - 其他类型：SWITCHING REGULATOR
控制模式：CURRENT-MODE最大输入电压：5.5 V
最小输入电压：2.7 V标称输入电压：3.6 V
JESD-30 代码：R-PDSO-J12长度：3 mm
功能数量：1端子数量：12
最高工作温度：85 °C最低工作温度：-40 °C
封装主体材料：PLASTIC/EPOXY封装代码：SOJ
封装形状：RECTANGULAR封装形式：SMALL OUTLINE
座面最大高度：1.1 mm表面贴装：YES
切换器配置：BOOST最大切换频率：2000 kHz
温度等级：INDUSTRIAL端子形式：J BEND
端子节距：0.5 mm端子位置：DUAL
宽度：2.4 mmBase Number Matches：1

AAT1231ITP-T1 数据手册

 浏览型号AAT1231ITP-T1的Datasheet PDF文件第18页浏览型号AAT1231ITP-T1的Datasheet PDF文件第19页浏览型号AAT1231ITP-T1的Datasheet PDF文件第20页浏览型号AAT1231ITP-T1的Datasheet PDF文件第22页浏览型号AAT1231ITP-T1的Datasheet PDF文件第23页浏览型号AAT1231ITP-T1的Datasheet PDF文件第24页 
AAT1231/1231-1  
Step-Up DC/DC Converters for  
White LED Backlight Applications  
To maintain stable operation at full load, the output  
capacitor should be sized to maintain ΔVOUT  
between 100mV and 200mV.  
Selecting the Boost Capacitors  
The high output ripple inherent in the boost con-  
verter necessitates low impedance output filtering.  
The boost converter input current flows during both  
ON and OFF switching intervals. The input ripple  
current is less than the output ripple and, as a  
result, less input capacitance is required.  
Multi-layer ceramic (MLC) capacitors provide small  
size and adequate capacitance, low parasitic  
equivalent series resistance (ESR) and equivalent  
series inductance (ESL), and are well suited for  
use with the AAT1231/1231-1 boost regulator. MLC  
capacitors of type X7R or X5R are recommended  
to ensure good capacitance stability over the full  
operating temperature range.  
PCB Layout Guidelines  
Boost converter performance can be adversely  
affected by poor layout. Possible impact includes  
high input and output voltage ripple, poor EMI per-  
formance, and reduced operating efficiency. Every  
attempt should be made to optimize the layout in  
order to minimize parasitic PCB effects (stray resist-  
ance, capacitance, and inductance) and EMI cou-  
pling from the high frequency SW node. A suggest-  
ed PCB layout for the AAT1231/1231-1 boost con-  
verter is shown in Figures 10 and 11. The following  
PCB layout guidelines should be considered:  
The output capacitor is sized to maintain the output  
load without significant voltage droop (ΔVOUT) dur-  
ing the power switch ON interval, when the output  
diode is not conducting. A ceramic output capacitor  
from 2.2µF to 4.7µF is recommended (see Table 5).  
Typically, 25V rated capacitors are required for the  
24V maximum boost output. Ceramic capacitors  
sized as small as 0805 are available which meet  
these requirements.  
1. Minimize the distance from Capacitor C1 and  
C2 negative terminal to the PGND pins. This is  
especially true with output capacitor C2, which  
conducts high ripple current from the output  
diode back to the PGND pins.  
2. Minimize the distance between L1 to DS1 and  
switching pin SW; minimize the size of the PCB  
area connected to the SW pin.  
3. Maintain a ground plane and connect to the IC  
PGND pin(s) as well as the GND terminals of  
C1 and C2.  
4. Consider additional PCB area on DS1 cathode  
to maximize heatsinking capability. This may  
be necessary when using a diode with a high  
VF and/or thermal resistance.  
MLC capacitors exhibit significant capacitance  
reduction with applied voltage. Output ripple meas-  
urements should confirm that output voltage droop  
and operating stability are acceptable. Voltage derat-  
ing can minimize this factor, but results may vary with  
package size and among specific manufacturers.  
Output capacitor size can be estimated at a switch-  
ing frequency (FS) of 500kHz (worst case).  
IOUT · DMAX  
FS · ΔVOUT  
COUT  
=
Manufacturer  
Part Number  
Value (µF) Voltage Rating Temp Co Case Size  
Murata  
Murata  
Murata  
Murata  
Murata  
GRM188R60J225KE19  
GRM188R61A225KE34  
GRM219R61E225KA12  
GRM21BR71E225KA73L  
GRM21BR61E475KA12  
2.2  
2.2  
2.2  
2.2  
4.7  
6.3  
10  
25  
25  
25  
X5R  
X5R  
X5R  
X7R  
X5R  
0603  
0603  
0805  
0805  
0805  
Table 6: Recommended Ceramic Capacitors.  
1231.2007.01.1.2  
21  
1...18192021222324...27

下载PDF

与AAT1231ITP-T1相关器件

型号 品牌 描述 获取价格 数据表
AAT1232 ANALOGICTECH 24V 100mA Step-Up Converter

获取价格
AAT1232_07 ANALOGICTECH 24V 100mA Step-Up Converter

获取价格
AAT1232IRN-T1 ANALOGICTECH 24V 100mA Step-Up Converter

获取价格
AAT1232ITP-T1 ANALOGICTECH 24V 100mA Step-Up Converter

获取价格
AAT1235 ANALOGICTECH High Efficiency White LED Drivers for Backlight and Keypad

获取价格
AAT1235IRN-T1 ANALOGICTECH High Efficiency White LED Drivers for Backlight and Keypad

获取价格

与AAT1231ITP-T1相关文章

您还可以找


热门产品
PCB打样/小批量
铝基板
BOM智能配单
PCBA制造
钣金
精密CNC
模具注塑
薄膜开关
精选活动
PCBA打样特惠
四六层板品质升级
铝基板品质升级
一体化电子制造
DFM下载
服务支持
企业认证
产品展示
工厂展示
工艺能力
积分商城
关于捷配
捷配简介
企业文化
公司动态
人才招聘
联系我们
帮助中心
下单流程
付款流程
开票流程
常见问题
全球PCB制造服务专线 400-613-0088

工作时间：9:00-21:00

CEO邮箱：ceo@jiepei.com

投诉邮箱：tousu@jiepei.com

捷配网-微信公众号 微信公众号
捷配网-微信公众号 抖音公众号
资质认证：
合作快递：
支付方式：
Copyright © 2024 Jiepei.com Inc. All Rights Reserved. 版权所有:杭州捷配信息科技有限公司 浙公网安备 33010502006866号 浙ICP备10014259号-119 营业执照ICP证