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SP7655ERL/TR PDF预览

SP7655ERL/TR

更新时间: 2024-11-26 03:34:47
品牌 Logo 应用领域
西伯斯 - SIPEX 稳压器
页数 文件大小 规格书
16页 1791K
描述
Wide Input Voltage Range, 8Amp 300kHz, Buck Regulator

SP7655ERL/TR 数据手册

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SP7655  
Wide Input Voltage Range, 8Amp  
300kHz, Buck Regulator  
TM  
Power  
Blox  
SP7655  
DFN PACKAGE  
7mm x 4mm  
FEATURES  
2.5Vto28VStepDownAchievedUsingDualInput  
OutputVoltagedownto0.8V  
8AOutputCapability  
P
GND  
1
2
3
26  
25  
24  
23  
LX  
LX  
LX  
TOP VIEW  
P
GND  
Heatsink Pad 1  
Connect to Lx  
P
GND  
BuiltinLowR PowerSwitches(15m 1 typ)  
DSON  
HighlyIntegratedDesign,MinimalComponents  
300kHzFixedFrequencyOperation  
UVLODetectsBothV andV  
GND  
4
5
LX  
V
FB  
22 V  
CC  
COMP  
UVIN  
GND  
SS  
CC  
IN  
21 GND  
20 GND  
6
7
Heatsink Pad 2  
Connect to GND  
OverTemperatureProtection  
ShortCircuitProtectionwithAuto-Restart  
WideBWAmpAllowsTypeIIorIIICompensation  
ProgrammableSoftStart  
8
9
19  
18  
GND  
BST  
V
IN 10  
17  
16  
NC  
LX  
Heatsink Pad 3  
FastTransientResponse  
V
IN 11  
Connect toV  
IN  
HighEfficiency:Greaterthan95%Possible  
Non-synchronousStart-UpintoaPre-ChargedOutput  
Lead Free, RoHS Compliant Package: Small7mmx4mmDFN  
U.S.Patent#6,922,041  
V
IN 12  
15 LX  
14  
V
IN 13  
LX  
DESCRIPTION  
TheSP7655isasynchronousstep-downswitchingregulator optimizedforhighefficiency. Thepartisdesignedtobe  
especiallyattractivefordualsupply,12Vor24Vdistributedpowersystemssteppeddownwith5Vusedtopowerthe  
controller. This lower V voltageminimizespowerdissipationinthepartandisusedtodrivethetopswitch.The  
CC  
SP7655isdesignedtoprovideafullyintegratedbuckregulatorsolutionusingafixed300kHzfrequency,PWMvoltage  
mode architecture. Protection features include UVLO, thermal shutdown and output short circuit protection. The  
SP7655isavailableinthespacesavingDFNpackage  
.
TYPICAL APPLICATION CIRCUIT  
U1  
SP7655  
L1  
VOUT  
3.30V  
0-8A  
1
2
26  
25  
24  
23  
22  
21  
20  
19  
18  
17  
16  
15  
14  
PGND  
PGND  
PGND  
GND  
VFB  
LX  
LX  
2.2uH, Irate=8A  
RZ3  
7.15k1  
1%  
RZ2  
CZ2  
C3  
47uF  
6.3V  
3
LX  
+5V  
VCC  
15k1,1%  
1,000pF  
4
LX  
R1  
CP1  
22pF  
CZ3  
150pF  
5
68.1k1,1%  
VCC  
GND  
GND  
GND  
BST  
NC  
6
CVCC  
2.2uF  
COMP  
UVIN  
GND  
SS  
7
CF1  
ENABLE  
8
RSET  
21.5k1,1%  
(note 2)  
100pF  
DBST  
9
10  
11  
12  
13  
SD101AWS  
VIN  
CSS  
47nF  
VIN  
LX  
CBST  
6,800pF  
VIN  
LX  
VIN  
LX  
VIN  
12V  
fs=300Khz  
C1  
C4  
Notes:  
22uF  
22uF  
16V  
16V  
1. U1 Bottom side layout should  
have three contacts isolated from  
one another: Vin, SWNODE, and GND.  
GND  
2. RSET=54.48/(Vout-0.8V) KOhms  
Rev E: 3/2ꢀ/07  
SP7655 Wide Input Voltage Range 8A, 300kHz, Buck Regulator  
© 2007 Sipex Corporation  

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