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SC4212LM

更新时间： 2024-02-26 13:53:21
品牌 Logo 应用领域
商升特 - SEMTECH /
页数 文件大小 规格书
13页 844K
描述
High PSRR, Very Low Input, Very Low Dropout, 1A Linear Regulator

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SC4212LM 数据手册

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SC4212LM  
High PSRR, Very Low Input, Very  
Low Dropout, 1A Linear Regulator  
HIGH-RELIABILITY PRODUCTS  
Features  
Description  
Input Voltage Range from 1.6V to 6.0V  
150mV Maximum Dropout @ 1A  
Adjustable Output from 0.5V with 1ꢀ Accuracy  
High PSRR (76dB Typical at 1.8Vin to 0.5Vo, 1A)  
Noise Bypass Pin  
Programmable Soft-Start  
12µA Quiescent Current in Shutdown  
Enable Input  
The SC4212LM is a high performance linear regulator  
designed for applications requiring very low dropout  
voltage at load currents up to 1 Ampere. It operates with  
VIN as low as 1.6V and up to 6V, making it useful for a wide  
range of different applications and rails. The output  
voltage is programmable down to 0.5V, set via an external  
resistor divider, or to a fixed setting of 0.5V depending  
upon how the FB pin is configured.  
Power Good Indicator  
Over Current and Over Temperature Protection  
Reverse Blocking from Output to Input  
Military Temperature Range: -55°C to +125°C  
3mm x 3mm x 1mm MLPD-8 Package  
Fully WEEE and RoHS Compliant  
The SC4212LM has an enable pin to further reduce power  
dissipation while shut down. This device also offers an  
active-high power good for the system to check the  
output voltage. An external soft start capacitor can be  
connected to the SS pin to program the profile of the  
startup. Additionally, the device provides protection fea-  
tures such as over current protection, over temperature  
protection and reverse blocking from output to input. A  
capacitor at the BYP pin can bypass the noise generated in  
the internal bandgap reference in order to improve the  
PSRR and the noise at the output. The SC4212LM is avail-  
able in a 3mm x 3mm MLPD-8 package.  
Applications  
Noise-sensitive rails  
FPGA power  
Embedded systems  
Avionics  
Typical Application Circuit  
SC4212LM  
SC4212LM  
0.5(R1+R2)  
R2  
VO =  
PG  
EN  
PG  
EN  
PG  
EN  
GN D  
FB  
VO =0.5V  
VO  
PG  
EN  
GN D  
FB  
VO  
VO  
VO  
VIN  
SS  
VIN  
SS  
VIN  
VIN  
R1  
C3  
BYP  
BYP  
CIN  
CIN  
CBYP  
CBYP  
CSS  
CSS  
CO  
CO  
R2  
R2  
* C3 is a placeholder  
Rev. 2.0  
1
© 2017 Semtech Corporation  
1234567...13

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