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AN_SYR837 / SYR838 应用手册,SYR837的技术规格书

更新时间:2019-09-17 18:27:56 大小:2M 上传用户:liuhui1984查看TA发布的资源 浏览次数:508 下载积分:2分 出售积分赚钱 评价赚积分 ( 如何评价?) 标签:SYR837 收藏 评论(0) 举报

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SYR837的技术规格书,供大家参考。

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文件名 大小
AN_SYR837_8_瑞芯微.pdf 2M

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Application Note: AN_SYR837/SYR838  
High Efficiency 5.5V, 6A, 2.4MHz  
I2C Programmable, Synchronous Step Down Regulator  
General Description  
Features  
SYR837/SYR838 is a high efficiency 2.4MHz synchronous  
step down DC/DC regulator IC capable of delivering up to  
6A output currents. It can operate over a wide input voltage  
range from 2.6V to 5.5V and integrate main switch and  
synchronous switch with very low RDS (ON) to minimize the  
conduction loss. The output voltage can be programmed  
from 0.7125V to 1.5V through I2C interface.  
Input voltage range: 2.6V to 5.5V  
2.4 MHz switching frequency minimizes the external  
components  
Typical 65uA quiescent current  
Low RDS(ON) for internal switches (PFET/NFET):  
28mΩ/17mΩ  
Programmable Output Voltage: 0.7125V to 1.5V in  
12.5mV steps  
SYR837/SYR838 is in a space saving, low profile  
CSP1.56*1.96-20 package.  
6A continuous output current capability.  
Capable for 0.25uH inductor and 22uF Ceramic  
Capacitor
Ordering Information  
Hic-cup mode protection for hard short condition  
RoHS Compliant and Halogen Free  
SYR837/8  
(
)
□ □□ □  
Compact package: CSP1.56*1.96-20  
Temperature Code  
Package Code  
Optional Spec Code  
Applications  
Smart-phone  
Ordering Number  
SYR837PKC  
Package Type  
CSP1.56*1.96-20  
CSP1.56*1.96-20  
Note  
0x40H  
0x41H  
Web-tablets  
SYR838PKC  
Typical Applications  
L1:0.25uH  
VOUT  
VIN:2.6~5.5V  
VIN  
LX  
CIN  
22uF/6.3V  
COUT  
22uF/6.3V  
K2  
K1  
VOUT  
VSEL  
EN  
SCL  
SDA  
R1  
1M  
R2  
1MΩ  
GND AGND  
Figure 1. Schematic Diagram  
Figure2. Efficiency  
AN_SYR837/SYR838 Rev.0.9  
Silergy Corp. Confidential-Prepared for Customer Use Only  
1

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