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SP7653_06 PDF预览

SP7653_06

更新时间: 2024-11-26 04:03:19
品牌 Logo 应用领域
西伯斯 - SIPEX 稳压器
页数 文件大小 规格书
15页 797K
描述
Wide Input Voltage Range, 1.3MHz, Buck Regulator

SP7653_06 数据手册

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SP7653  
Wide Input Voltage Range,  
1.3MHz, Buck Regulator  
TM  
Power  
Blox  
SP7653  
FEATURES  
DFN PACKAGE  
7mm x 4mm  
2.5Vto20VStepDownAchievedUsingDualInput  
26  
P
1
2
3
LX  
GND  
OutputVoltagedownto0.8V  
BOTTOM VIEW  
P
25  
GND  
LX  
3AOutputCapability  
Heatsink Pad 1  
P
24  
LX  
GND  
Connect to Lx  
BuiltinLowRDSON PowerSwitches(40m1 typical)  
HighlyIntegratedDesign,MinimalComponents  
1.3MHzFixedFrequencyOperation  
UVLODetectsBothV andV  
23  
GND  
4
LX  
5
V
22  
FB  
V
CC  
6
COMP  
21  
GND  
CC  
IN  
Heatsink Pad 2  
Co  
n
n
e
c
t
t
o
G
N
D
UV  
7
IN  
20  
OverTemperatureProtection  
GND  
GND  
8
19  
ShortCircuitProtectionwithAuto-Restart  
WideBWAmpAllowsTypeIIorIIICompensation  
ProgrammableSoftStart  
HighEfficiency:Greaterthan95% Possible  
AsynchronousStart-UpintoaPre-ChargedOutput  
Small7mmx4mmDFNPackage  
U.S.Patent#6,922,041  
GND  
SS  
9
18  
BST  
V
10  
NC  
17  
IN  
Heatsink Pad 3  
Connect to VIN  
V
FastTransientResponse  
11  
IN  
LX  
16  
V
12  
IN  
LX 15  
13  
V
14  
LX  
IN  
Now Available in Lead Free Packaging  
DESCRIPTION  
TheSP7653isasynchronousstep-downswitchingregulator optimizedforhighefficiency. Thepartisdesignedtobe  
especiallyattractivefordualsupply,12Vto20Vdistributedpowersystemssteppeddownwith5Vusedtopowerthe  
controller.ThislowerV voltageminimizespowerdissipationinthepartandisusedtodrivethetopswitch.TheSP7653  
CC  
isdesignedtoprovideafullyintegratedbuckregulatorsolutionusingafixed1.3MHzfrequency,PWMvoltagemode  
architecture.ProtectionfeaturesincludeUnderVoltageLockOut(UVLO),thermalshutdownandoutputshortcircuit  
protection.TheSP7653isavailableinthespacesavingDFNpackage.  
TYPICAL APPLICATION CIRCUIT  
L1 IHLP2525CZER2R2M01  
U1  
2.2uH, Irate=8A  
SP7653  
DCR=18m1  
1
2
26  
25  
24  
23  
22  
21  
20  
19  
18  
17  
16  
15  
14  
PGND  
PGND  
PGND  
GND  
VFB  
LX  
LX  
VOUT  
3.30V  
0-3A  
RZ2  
CZ2  
C3:X5R  
CERAMIC  
C3  
RZ3  
1581 ,1%  
3
LX  
38.3k1 , 1%  
1.5nF  
4
47uF  
6.3V  
LX  
R1  
CP1  
5
68.1k1 ,1%  
CZ3  
820pF  
VCC  
GND  
GND  
GND  
BST  
NC  
3.3pF  
6
COMP  
UVIN  
GND  
SS  
CVCC  
2.2uF  
7
CF1  
100pF  
GND2  
8
9
R2  
21.5k1 ,1%  
RBST  
10  
11  
12  
13  
CSS  
22nF  
VIN  
5.111 ,  
DBST  
SD101AWS  
1%  
VIN  
LX  
VIN  
LX  
CBST  
1uF  
VIN  
LX  
VIN  
12V  
U2  
Fs=1.3MHz  
R3  
SPX5205  
VIN VOUT  
GND  
200k1 ,1%  
C1,C5:  
CERAMIC  
X5R  
1
5
4
Notes:  
C1  
22uF  
16V  
C5  
22uF  
16V  
2
3
U1 Bottom-Side Layout should have  
three Contacts which are  
EN  
BYP  
isolated from one another: QT-  
Drain Contact, QB-Drain Contact and  
Controller-GND Contact.  
R4  
100k1 ,1%  
C2  
0.1uF  
GND  
ALL RESISTORS & CAPACITORS ARE SIZE  
0603 UNLESS OTHERWISE SPECIFIED.  
D
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7
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0
6  
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Date: ꢀꢀ/20/06  
SP7653 Wide Input Voltage Range, ꢀ.3MHz, Buck Regulator  
© Copyright 2006 Sipex Corporation  

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