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A8499 PDF预览

A8499

更新时间: 2024-01-13 12:56:42
品牌 Logo 应用领域
急速微 - ALLEGRO 稳压器
页数 文件大小 规格书
7页 277K
描述
High Voltage Step-Down Regulator

A8499 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:LEAD FREE, MS-012BA, SOIC-8针数:8
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:8.49
Is Samacsys:N其他特性:ALSO OPERATES IN ADJUSTABLE MODE FROM 1.2 V TO 24 V
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 V
JESD-30 代码:R-PDSO-G8JESD-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:3 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 mmBase Number Matches:1

A8499 数据手册

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A8499  
High Voltage Step-Down  
Regulator  
Package LJ, 8-pin SOIC  
with exposed thermal pad  
The A8499 is a step down regulator that will handle a  
wide input operating voltage range.  
The A8499 is supplied in a low-profile 8-lead SOIC  
with exposed pad (package LJ).  
Approximate Scale 1:1  
FEATURES  
„
„
„
„
„
8 to 50 V input range  
Integrated DMOS switch  
Adjustable fixed off-time  
Highly efficient  
Adjustable 1.2 to 24 V output  
APPLICATIONS  
„
„
Printer power supplies  
Consumer equipment power supplies  
TYPICAL APPLICATION  
+42 V  
Efficiency vs. Output Current  
CBOOT  
0.01 μF  
90.0  
88.0  
86.0  
84.0  
82.0  
80.0  
78.0  
76.0  
74.0  
72.0  
70.0  
C3  
100 μF  
C3  
0.22 μF  
50 V  
BOOT  
ENB  
VIN  
LX  
VBIAS  
FB  
L 1  
47 μH  
VOUT  
3.3 V / 1.2 A  
A8499  
VOUT (V)  
TSET  
GND  
3.3  
5
RTSET  
R1  
121 kΩ  
17.8 kΩ  
ESR  
0
200  
400  
600  
800  
1000 1200 1400  
R2  
COUT  
220 μF  
10 V  
D1  
10.2 kΩ  
IOUT (mA)  
Circuit for 42 V step down to 3.3 V at 1.2 A. Efficiency data from circuit shown in left panel.Data is for reference only.  
A8499-DS  

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