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SP7662_07 PDF预览

SP7662_07

更新时间: 2022-04-23 23:00:11
品牌 Logo 应用领域
西伯斯 - SIPEX 稳压器
页数 文件大小 规格书
19页 1065K
描述
Wide Input Voltage Range 12A, 300kHz, Buck Regulator

SP7662_07 数据手册

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SP7662  
Wide Input Voltage Range  
TM  
12A, 300kHz, Buck Regulator  
Power  
Blox  
SP7662  
FEATURES  
DFN PACKAGE  
7mm x 4mm (Option 2)  
4.75V to 22V Input Voltage Range using Single Supply  
3V to 22V Input Voltage Range using Dual Supply  
±ꢀ% 0.8V Reference  
26  
25  
24  
23  
22  
21  
P
P
1
2
3
LX  
LX  
LX  
GND  
BOTTOM VIEW  
GND  
GND  
ꢀ2A Output Capability  
Heatsink Pad 1  
Connect to Lx  
P
Current Limiting using Inductor DCR  
Built in Low RDS(ON) Power Switches  
300 kHz Fixed Frequency Operation  
Over Temperature Protection  
P
4
5
LX  
GND  
Pin 27  
GND  
V
CC  
6
7
UV  
V
FB  
IN  
GND  
GND  
Short Circuit Protection with Auto-Restart  
Wide BW Amp Allows Type II or III Compensation  
Programmable Soft Start  
COMP  
SS  
20  
19  
18  
17  
Heatsink Pad 2  
Connect to GND  
8
9
GND  
ISN  
V
IN  
Fast Transient Response  
Pin 28  
10  
BST  
LX  
ꢀ HighꢀEfficiency:ꢀGreaterꢀthanꢀ95% Possible  
■ꢀ Nonsynchronous Start-Up into a Pre-Charged Output  
ꢀ AvailableꢀinꢀRoHSꢀCompliant,ꢀLeadꢀFreeꢀPackaging:  
Small 7mm x 4mm DFN  
Heatsink Pad 3  
Connect to VINP  
16  
11 ISP  
12  
13  
SWN  
VINP  
LX 15  
14  
Pin 29  
LX  
U.S. Patent #6,922,04ꢀ  
DESCRIPTION  
TheꢀSP7662ꢀisꢀaꢀsynchronousꢀstep-downꢀswitchingꢀregulatorꢀꢀoptimizedꢀforꢀhighꢀefficiency.ꢀꢀTheꢀpartꢀisꢀdesignedꢀ  
for use with a single 4.75V to 22V single supply or 3V to 22V input if an external Vcc is provided. The SP7662 pro-  
videsꢀaꢀfullyꢀintegratedꢀbuckꢀregulatorꢀsolutionꢀusingꢀaꢀfixedꢀ300ꢀkHzꢀfrequency,ꢀPWMꢀvoltageꢀmodeꢀarchitecture.ꢀ  
Protection features include UVLO, thermal shutdown, output current limit and short circuit protection. The SP7662  
is available in the space saving DFN package.  
TYPICAL APPLICATION CIRCUIT  
VIN  
12Vin (9.6V - 16V)  
VOUT  
3.30V, 0-12A  
Lꢀ, SC50ꢀ8-2R7M  
2.7uH, 4.ꢀ mOhm  
C3  
22uF  
C2  
Cꢀ  
LX  
22uF 22uF  
3
R3  
5.ꢀꢀk  
R4  
5.ꢀꢀk  
RZ3  
453  
Rꢀ  
ꢀ0k  
2
C4  
R9  
ISP  
0.ꢀuF  
6ꢀ.9k  
ISN  
C5  
C6  
GND  
2
26  
25  
24  
23  
22  
2ꢀ  
20  
ꢀ9  
ꢀ8  
ꢀ7  
ꢀ6  
ꢀ5  
ꢀ4  
PGND  
PGND  
PGND  
PGND  
GND  
VFB  
LX  
ꢀ00uF ꢀ00uF  
LX  
LX  
CZ3  
2200pF  
VFB  
RZ2  
3
4
CZ2  
Uꢀ  
4
CVCC  
4.7uF  
SP7662  
VFB  
LX  
ꢀ0nF  
4.02k  
GND  
R2  
3.ꢀ6k  
5
VCC  
UVIN  
GND  
GND  
VIN  
BST  
LX  
ꢀ00pF  
CPꢀ  
6
NC  
7
COMP  
SS  
CSS 47nF  
CFꢀ  
ꢀ00pF  
8
9
GND  
ISN  
ꢀ0  
ꢀꢀ  
ꢀ2  
ꢀ3  
RBST  
5.ꢀ  
ISP  
C9 6.8nF  
SDꢀ0ꢀAWS  
DBST  
SWN  
VIN  
LX  
22nF  
CBST  
LX  
ISN  
ISP  
LX  
LX  
Rs2  
Cs2  
Rsꢀ  
ꢀ Ohm  
Csꢀ  
2.2nF  
ꢀ Ohm  
2.2nF  
Mar ꢀ-07 Rev AJ  
SP7662 Wide Input Voltage Range ꢀ2A, 300kHz Buck Regulator  
© 2007 Sipex Corporation  

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