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AS1374-BWLT1533 参数 Datasheet PDF下载

AS1374-BWLT1533图片预览
型号: AS1374-BWLT1533
PDF下载: 下载PDF文件 查看货源
内容描述: 双路200mA ,低噪声,高PSRR ,低压降稳压器 [Dual 200mA, Low-Noise, High-PSRR, Low Dropout Regulators]
分类和应用: 稳压器
文件页数/大小: 19 页 / 1101 K
品牌: AMSCO [ AMS(艾迈斯) ]
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AS1374  
Datasheet - Application Information  
9.3 Power Dissipation  
Maximum power dissipation (PD) of the LDO is the sum of the power dissipated by the internal series MOSFET and the quiescent current  
required to bias the internal voltage reference and the internal error amplifier, and is calculated as:  
PDMAXSeriespass= ILOADMAXVINMAXVOUTMINWatts  
Internal power dissipation as a result of the bias current for the internal voltage reference and the error amplifier is calculated as:  
PDMAXBias= VINMAXIQ Watts  
(EQ 3)  
(EQ 4)  
(EQ 5)  
Total LDO power dissipation is calculated as:  
PDMAXTotal= PDMAXSeriespass+ PDMAXBiasWatts  
9.4 Junction Temperature  
Under all operating conditions, the maximum junction temperature should not be allowed to exceed 125°C (unless otherwise specified ithe  
datasheet). Limiting the maximum junction temperature requires knowledge of the heat path from junction to case (JC°C/W fixed by the C  
manufacturer), and adjustment of the case to ambient heat path (CA°C/W) by manipulation of the PCB copper area adjacento the IC position.  
Figure 27. Package Physical Arrangements  
CS-WLP Package  
Chip  
Packag
Transfer Layer  
PCB  
Solder Balls  
www.austriamicrosystems.com/LDOs/AS1374  
Revision 1.8  
11 - 18