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SP7655_05

更新时间: 2022-04-23 23:00:11
品牌 Logo 应用领域
西伯斯 - SIPEX /
页数 文件大小 规格书
10页 491K
描述
Evaluation Board Manual

SP7655_05 数据手册

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SP7655  
Evaluation Board Manual  
ƒ Easy Evaluation for the  
SP7655ER 24V Input, 0 to 8A  
Output Synchronous Buck  
Converter  
ƒ Built in Low Rds(on) Power FETs  
ƒ UVLO Detects Both VCC and VIN  
ƒ High Integrated Design, Minimal  
Components  
ƒ High Efficiency: 85%  
ƒ Feature Rich: UVIN, Programmable  
Softstart, External VCC Supply and  
Output Dead Short Circuit Shutdown  
SP7655EB SCHEMATIC  
U1  
SP7655  
L1 IHLP-2525CZ-01-2R2MTR  
1
26  
PGND  
LX  
VOUT  
2.2uH, Irate=8A  
2
25  
3.30V  
0-8A  
PGND  
LX  
LX  
RZ2  
CZ2  
DCR=10.4mOhm  
RZ3  
3
4
24  
23  
22  
21  
20  
19  
18  
17  
16  
15  
14  
PGND  
GND  
VFB  
COMP  
UVIN  
GND  
SS  
C3  
8.66k,1%  
7.68k,1%  
2,200pF  
R1  
68.1k,1%  
LX  
47uF  
CP1  
5
6.3V  
CZ3  
120pF  
VCC  
GND  
GND  
GND  
BST  
NC  
6
15pF  
CVCC  
2.2uF  
7
fs=300Khz  
CF1  
GND2  
C3  
8
100pF  
DBST  
9
R2  
21.5k,1%  
10  
11  
12  
13  
CERAMIC  
1210  
CSS  
SD101AWS  
VIN  
47nF  
VIN  
LX  
X5R  
VIN  
LX  
CBST  
1uF  
VIN  
LX  
VIN  
24V  
U2  
R3  
SPX5205  
VIN VOUT  
GND  
D1  
499k,1%  
C1,C4  
Notes:  
1
2
3
5
4
CERAMIC C1  
C4  
U1 Bottom-Side Layout should  
three Contacts which  
isolated from one of another,  
& QB Drain Contact  
MMSZ4678T1  
3.3uF  
50V  
1210  
Y5V  
3.3uF  
50V  
Vz=12V  
EN  
BYP  
R4  
C2  
0.1uF  
100k,1%  
GND  
Controller GND  
All resistor & capacitor  
0603 unless other wise  
Date: 2/01/05  
SP7655 Evaluation Manual  
Copyright 2004 Sipex Corporation  

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