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AAT3221IJS-3.1-T1 PDF预览

AAT3221IJS-3.1-T1

更新时间: 2024-01-28 17:52:14
品牌 Logo 应用领域
AAT 稳压器
页数 文件大小 规格书
18页 190K
描述
150mA NanoPower⑩ LDO Linear Regulator

AAT3221IJS-3.1-T1 技术参数

是否无铅: 不含铅是否Rohs认证: 符合
生命周期:Contact Manufacturer零件包装代码:SOIC
包装说明:ROHS COMPLIANT, SC-70JW, 8 PIN针数:8
Reach Compliance Code:unknownECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.65
最大回动电压 1:0.222 V最大输入电压:5.5 V
最小输入电压:3.384 VJESD-30 代码:R-PDSO-C8
长度:2 mm功能数量:1
端子数量:8工作温度TJ-Max:150 °C
工作温度TJ-Min:-40 °C最大输出电流 1:0.1 A
最大输出电压 1:3.162 V最小输出电压 1:3.038 V
标称输出电压 1:3.1 V封装主体材料:PLASTIC/EPOXY
封装代码:VSOC封装形状:RECTANGULAR
封装形式:SMALL OUTLINE, VERY THIN PROFILE峰值回流温度(摄氏度):NOT SPECIFIED
认证状态:Not Qualified调节器类型:FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR
座面最大高度:1.1 mm表面贴装:YES
端子形式:C BEND端子节距:0.5 mm
端子位置:DUAL处于峰值回流温度下的最长时间:NOT SPECIFIED
宽度:1.75 mmBase Number Matches:1

AAT3221IJS-3.1-T1 数据手册

 浏览型号AAT3221IJS-3.1-T1的Datasheet PDF文件第10页浏览型号AAT3221IJS-3.1-T1的Datasheet PDF文件第11页浏览型号AAT3221IJS-3.1-T1的Datasheet PDF文件第12页浏览型号AAT3221IJS-3.1-T1的Datasheet PDF文件第14页浏览型号AAT3221IJS-3.1-T1的Datasheet PDF文件第15页浏览型号AAT3221IJS-3.1-T1的Datasheet PDF文件第16页 
AAT3221/2  
150mA NanoPower™ LDO Linear Regulator  
High Peak Output Current Applications  
Device Duty Cycle vs. VDROP  
Some applications require the LDO regulator to  
operate at continuous nominal levels with short  
duration, high-current peaks. The duty cycles for  
both output current levels must be taken into  
account. To do so, one would first need to calcu-  
late the power dissipation at the nominal continu-  
ous level, then factor in the addition power dissipa-  
tion due to the short duration, high-current peaks.  
(VOUT = 2.5V @ 25°C)  
3.5  
3
200mA  
2.5  
2
1.5  
1
0.5  
0
For example, a 2.5V system using an AAT3221/  
2IGV-2.5-T1 operates at a continuous 100mA load  
current level and has short 150mA current peaks.  
The current peak occurs for 378µs out of a 4.61ms  
period. It will be assumed the input voltage is 5.0V.  
0
10  
20  
30  
40  
50  
60  
70  
80  
90  
100  
Duty Cycle (%)  
First, the current duty cycle percentage must be  
calculated:  
% Peak Duty Cycle: X/100 = 378ms/4.61ms  
% Peak Duty Cycle = 8.2%  
Device Duty Cycle vs. VDROP  
(VOUT = 2.5V @ 50°C)  
The LDO regulator will be under the 100mA load  
for 91.8% of the 4.61ms period and have 150mA  
peaks occurring for 8.2% of the time. Next, the  
continuous nominal power dissipation for the  
100mA load should be determined then multiplied  
by the duty cycle to conclude the actual power dis-  
sipation over time.  
3.5  
3
200mA  
2.5  
2
150mA  
1.5  
1
0.5  
0
PD(MAX) = (VIN - VOUT)IOUT + (VIN x IGND  
)
0
10  
20  
30  
40  
50  
60  
70  
80  
90  
100  
PD(100mA) = (5.0V - 2.5V)100mA + (5.0V x 1.1mA)  
PD(100mA) = 250mW  
Duty Cycle (%)  
PD(91.8%D/C) = %DC x PD(100mA)  
PD(91.8%D/C) = 0.918 x 250mW  
PD(91.8%D/C) = 229.5mW  
Device Duty Cycle vs. VDROP  
(VOUT = 2.5V @ 85°C)  
3.5  
3
100mA  
2.5  
2
200mA  
150mA  
1.5  
1
0.5  
0
0
10  
20  
30  
40  
50  
60  
70  
80  
90  
100  
Duty Cycle (%)  
3221.2005.12.1.11  
13  

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