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A8447SLJTR-T PDF预览

A8447SLJTR-T

更新时间: 2024-11-26 03:17:07
品牌 Logo 应用领域
急速微 - ALLEGRO 稳压器开关式稳压器或控制器电源电路开关式控制器光电二极管
页数 文件大小 规格书
9页 371K
描述
High Voltage Step Down Regulator

A8447SLJTR-T 技术参数

是否无铅: 不含铅是否Rohs认证: 符合
生命周期:Obsolete零件包装代码:SOIC
包装说明:HLSOP, SOP8,.25针数:8
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.81
其他特性:ALSO OPERATES IN ADJUSTABLE MODE FROM 0.8V TO 24V模拟集成电路 - 其他类型:SWITCHING REGULATOR
控制模式:CURRENT-MODE控制技术:PULSE WIDTH MODULATION
最大输入电压:50 V最小输入电压:8 V
标称输入电压:42 VJESD-30 代码:R-PDSO-G8
JESD-609代码:e3长度:4.9 mm
湿度敏感等级:3功能数量:1
端子数量:8最高工作温度:85 °C
最低工作温度:-20 °C最大输出电流:5 A
封装主体材料:PLASTIC/EPOXY封装代码:HLSOP
封装等效代码:SOP8,.25封装形状:RECTANGULAR
封装形式:SMALL OUTLINE, HEAT SINK/SLUG, LOW PROFILE峰值回流温度(摄氏度):NOT SPECIFIED
认证状态:Not Qualified座面最大高度:1.7 mm
子类别:Switching Regulator or Controllers表面贴装:YES
切换器配置:BUCK温度等级:OTHER
端子面层:Matte Tin (Sn)端子形式:GULL WING
端子节距:1.27 mm端子位置:DUAL
处于峰值回流温度下的最长时间:NOT SPECIFIED宽度:3.9 mm
Base Number Matches:1

A8447SLJTR-T 数据手册

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A8447  
High Voltage Step Down Regulator  
Features and Benefits  
Description  
Wide input voltage range: 8 to 50 V  
Integrated low RDS(on) DMOS switch  
3 A continuous output current  
Adjustable fixed off-time  
Highly efficient  
Adjustable output: 0.8 to 24 V  
Small package with exposed thermal pad  
The A8447 is a 3A, high efficiency general-purpose buck  
regulatordesignedforawidevarietyofapplications.Theoutput  
voltageisadjustablefrom0.8to24V,basedonaresistordivider  
and the 0.8V±3% reference. External components include an  
externalclampingdiode,inductor,andfiltercapacitor.Theoff-  
timeisdeterminedbyanexternalresistortoground. Itoperates  
in both continuous and discontinuous modes to maintain light  
load regulation. An internal blanking circuit is used to filter  
out transients due to the reverse recovery of the external clamp  
diode. Typical blanking time is 200 ns.  
This new device is ideal for various end products including  
applications with 8 to 50 V input voltage range and require up  
to 3 A output current, such as uninterruptible power supplies,  
point of sale (POS) applications, and industrial applications  
with 24 or 36 V bus.  
Package: 8 pin SOIC with exposed thermal  
pad (suffix LJ)  
Applications include:  
Printer power supplies  
Office automation equipment  
POS thermal, laser, photo, and inkjet printers  
Tape drives  
Industrial applications  
Approximate Scale 1:1  
Typical Application  
+42  
V
CBOOT  
0.01 μF  
Efficiency vs. Output Current  
CIN1  
CIN2  
90.0  
88.0  
86.0  
84.0  
82.0  
80.0  
78.0  
76.0  
74.0  
72.0  
70.0  
0.22 μF  
BOOT  
ENB  
VIN  
LX  
D1  
L 1  
VOUT  
A8447  
3.3 V  
3 A  
VOUT (V)  
TSET  
GND  
VBIAS  
FB  
RTSET  
R1  
5
54 k7  
2.87 k7  
3.3  
ESR  
COUT  
220 μF  
25 V  
CBYP  
R2  
0
500  
1000  
1500  
2000  
2500  
3000  
0.22 μF  
910 7  
IOUT (mA)  
Data is for reference only. Efficiency data from circuit shown in left panel.  
A8447-DS, Rev. 1  

A8447SLJTR-T 替代型号

型号 品牌 替代类型 描述 数据表
A8498SLJTR-T ALLEGRO

完全替代

Wide Input Voltage 3.0 A Step Down Regulator
A8498SLJ-T ALLEGRO

类似代替

Wide Input Voltage 3.0 A Step Down Regulator

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