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SP7661ERL/TR Datasheet(PDF) 1 Page - Sipex Corporation

No. de pieza SP7661ERL/TR
Descripción Electrónicos  Wide Input Voltage Range 3A, 600kHz, Buck Regulator
PDF  20 Pages
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Fabricante Electrónico  SIPEX [Sipex Corporation]
Página de inicio  http://www.sipex.com
Logo SIPEX - Sipex Corporation

SP7661ERL/TR Datasheet(HTML) 1 Page - Sipex Corporation

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Mar -07 Rev N
SP766 Wide Input Voltage Range 3A, 600kHz Buck Regulator
© 2007 Sipex Corporation
SP7661
FEATURES
■ 4.75Vto22VInputVoltageRangeusingSingleSupply
■ 3Vto22VInputVoltageRangeusingDualSupply
■ ±1%0.8VReference
■ 3AOutputCapability
■ CurrentLimitingusingInductorDCR
■ BuiltinLowRDS(ON) PowerSwitches
■ 600kHzFixedFrequencyOperation
■ OverTemperatureProtection
■ ShortCircuitProtectionwithAuto-Restart
■ WideBWAmpAllowsTypeIIorIIICompensation
■ ProgrammableSoftStart
■ FastTransientResponse
■ HighEfficiency:Greaterthan
93%Possible
■ NonsynchronousStart-UpintoaPre-ChargedOutput
■ AvailableinRoHSCompliant,LeadFreePackaging:
Small7mmx4mmDFN
■ U.S.Patent#6,922,041
Wide Input Voltage Range
3A, 600kHz, Buck Regulator
TheSP7661isasynchronousstep-downswitchingregulatoroptimizedforhighefficiency.Thepartisdesigned
forusewithasingle4.75Vto22Vsinglesupplyor3Vto22VinputifanexternalVccisprovided.TheSP7661
providesafullyintegratedbuckregulatorsolutionusingafixed600kHzfrequency,PWMvoltagemodearchitecture.
ProtectionfeaturesincludeUVLO,thermalshutdown,outputcurrentlimitandshortcircuitprotection.TheSP7661
isavailableinthespacesavingDFNpackage
.
TYPICAL APPLICATION CIRCUIT
DESCRIPTION
PowerBloxTM
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
BOTTOM VIEW
Heatsink Pad 1
Connect to Lx
Heatsink Pad 2
Connect to GND
Heatsink Pad 3
Connect to VINP
PGND
PGND
GND
VFB
COMP
UVIN
SWN
VIN
LX
LX
LX
LX
VCC
BST
LX
LX
LX
DFN PACKAGE
7mm x 4mm (Option 2)
SP7661
PGND
VINP
SS
ISN
ISP
PGND
GND
GND
GND
Pin 27
Pin 28
Pin 29
ISP
ISN
ISN
LX
LX
ISP
NC
VFB
VFB
LX
12V (9.6V-22V)
SD101AWS
3.30V, 0-3A
GND
2

C5
100uF
VOUT
3

U1
SP7661
PGND

PGND
2
PGND
3
PGND
4
GND
5
VFB
6
COMP
7
SS
8
GND
9
ISN
0
ISP

SWN
2
VIN
3
LX 14
LX 15
LX 6
BST
7
VIN 18
GND 19
GND 20
UVIN 2
VCC 22
LX 23
LX 24
LX 25
LX 26
CZ2
6800pF
Rs2
1Ohm
C9 6.8nF
CP 56pF
C
22uF
R
0k
CBST
22nF
Cs2
2.2nF
C2
22uF
CVCC
4.7uF
GND
4

RZ3
400
R3
5.11k
DBST
R9
61.9k
RZ2
4.02k
R2
3.16k
L1,Wurth-744311220
2.2uH,14mOhm,7x7mm,9A
VIN


CSS 47nF
R4
5.11k
CZ3
1500pF
C4 47nF
CF1
100pF


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