欢迎访问ic37.com |
会员登录 免费注册
发布采购

NB675 参数 Datasheet PDF下载

NB675图片预览
型号: NB675
PDF下载: 下载PDF文件 查看货源
内容描述: 24V高电流同步降压转换器1.5A LDO和磨光参考 [24V, High Current Synchronous Buck Converter With 1.5A LDO and Buffed Reference]
分类和应用: 转换器
文件页数/大小: 21 页 / 617 K
品牌: MPS [ MONOLITHIC POWER SYSTEMS ]
 浏览型号NB675的Datasheet PDF文件第13页浏览型号NB675的Datasheet PDF文件第14页浏览型号NB675的Datasheet PDF文件第15页浏览型号NB675的Datasheet PDF文件第16页浏览型号NB675的Datasheet PDF文件第17页浏览型号NB675的Datasheet PDF文件第18页浏览型号NB675的Datasheet PDF文件第20页浏览型号NB675的Datasheet PDF文件第21页  
NB675 –24V, HIGH CURRENT SYNCHRONOUS BUCK CONVERTER  
PGND  
DO NOT CONNECT  
TO PGND HERE  
To  
AGND  
VOUT  
AGND KELVIN  
CONNECT TO PGND  
AT VCC CAP  
AGND  
At least two layers should be applied for  
Vin and PGND and place >20 vias close to  
the part for a better thermal performance  
LP  
FB  
14  
EN2  
17  
VCC  
16  
EN1  
15  
PG  
13  
18  
VIN  
12  
BST  
SW  
1
2
3
VIN  
19  
20  
21  
VIN  
PGND  
PGND  
11  
10  
PGND  
9
4
5
6
7
8
AGND  
--Top Layer  
--Inner PGND Layer  
--Inner Layer2  
--Bottom Layer  
--Via  
--Via For AGND  
VOUT  
PGND  
Figure 13—Recommend Layout  
Recommend Design Example  
The detailed application schematic is shown in  
Figure 14 when large ESR caps are used and  
Figure 15 when low ESR caps are applied. The  
typical performance and circuit waveforms have  
been shown in the Typical Performance  
Characteristics section. For more possible  
applications of this device, please refer to related  
Evaluation Board Data Sheets.  
Some design examples are provided below when  
the ceramic capacitors are applied:  
Table 2—Design Example  
VOUT  
(V)  
Cout  
(F)  
L
(μH)  
R4  
()  
C4  
(F)  
R1  
(k)  
R2  
(k)  
1.05  
1.2  
22μx3  
22μx3  
22μx3  
1.2  
1.2  
1.2  
NS  
NS  
NS  
220p  
220p  
220p  
59  
82  
102  
82  
100  
100  
1.35  
NB675 Rev. 1.0  
1/14/2013  
www.MonolithicPower.com  
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.  
© 2013 MPS. All Rights Reserved.  
19  
 复制成功!