数据搜索系统，热门电子元器件搜索
  Chinese  ▼
ALLDATASHEETCN.COM

X  

预览 PDF HTML

SP7661 数据表(PDF) 5 Page - Sipex Corporation

部件名 SP7661
功能描述  Wide Input Voltage Range 3A, 600kHz, Buck Regulator
PDF  20 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  SIPEX [Sipex Corporation]
网页  http://www.sipex.com
标志 SIPEX - Sipex Corporation

SP7661 数据表(HTML) 5 Page - Sipex Corporation

  SP7661 Datasheet HTML 1Page - Sipex Corporation SP7661 Datasheet HTML 2Page - Sipex Corporation SP7661 Datasheet HTML 3Page - Sipex Corporation SP7661 Datasheet HTML 4Page - Sipex Corporation SP7661 Datasheet HTML 5Page - Sipex Corporation SP7661 Datasheet HTML 6Page - Sipex Corporation SP7661 Datasheet HTML 7Page - Sipex Corporation SP7661 Datasheet HTML 8Page - Sipex Corporation SP7661 Datasheet HTML 9Page - Sipex Corporation Next Button
Zoom Inzoom in Zoom Outzoom out
 5 / 20 page
background image
5
Mar -07 Rev N
SP766 Wide Input Voltage Range 3A, 600kHz Buck Regulator
© 2007 Sipex Corporation
PIN DESCRIPTION
Pin #
Pin
Name
Description
1-4
PGND Groundconnectionforthesynchronousrectifier.
5,9,
19,20 GND
GroundPin.ThecontrolcircuitryoftheICandlowerpowerdriverarereferencedtothis
pin.Returnseparatelyfromothergroundtracestothe(-)terminalofCOut.
6
VFB
FeedbackVoltageandShortCircuitDetectionpin.Itistheinvertinginputofthe
Error Amplifier and serves as the output voltage feedback point for the Buck
Converter.Theoutputvoltageissensedandcanbeadjustedthroughanexternal
resistordivider.WheneverVFBdrops0.25Vbelowthepositivereference,ashort
circuitfaultisdetectedandtheICentershiccupmode.
7
COMP
OutputoftheErrorAmplifier.Itisinternallyconnectedtotheinvertinginputofthe
PWMcomparator.Anoptimalfiltercombinationischosenandconnectedtothis
pinandeithergroundorVFBtostabilizethevoltagemodeloop.
8
SS
SoftStart.ConnectanexternalcapacitorbetweenSSandGNDtosetthesoftstart
ratebasedonthe10µAsourcecurrent.TheSSpinisheldlowviaa1mA(min)
currentduringallfaultconditions.
0
ISN
Currentsensenegativeinput.Rail-to-railinputforovercurrentdetection.

ISP
Currentsensepositiveinput.Rail-to-railinputforovercurrentdetection.
2
SWN LowersupplyrailfortheGHhigh-sidegatedriver.Connectthispintotheswitching
nodeascloseaspossibletopins23-27.Donotconnectthispintopins14–16.
3
VINP InputconnectiontothehighsideN-channelMOSFET.
14-16,
23-26
LX
ConnectaninductorbetweenthispinandVOut.
7
BST
Highsidedriversupplypin.ConnectBSTtotheexternalboostdiodeandcapacitor
as shown in the TypicalApplication Circuit on page 1.The high side driver is
connectedbetweenBSTpinandSWNpin.
18
VIN
ViNconnectionforinternalLDOandPWMController.
2
UVIN
UVLOinputforViNvoltage.ConnectaresistordividerbetweenViNandUVIN
tosetminimumoperatingvoltage.Useresistorvaluesbelow20kΩtooverride
internalresistordivider.
22
VCC Outputofinternalregulator.MaybeexterinallybiasedifVin<5V.
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



Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20


数据表 下载

Go To PDF Page


链接网址



ALLDATASHEET是否为您带来帮助?  [ DONATE ] 

关于 Alldatasheet   |   广告服务   |   联系我们   |   隐私政策   |   数据表链接    |   链接交换   |   制造商名单
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com