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SP7661 数据表(PDF) 1 Page - Sipex Corporation |
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SP7661 数据表(HTML) 1 Page - Sipex Corporation |
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1 / 20 page  Nov3-06 Rev I SP766 Wide Input Voltage Range 3A, 600kHz Buck Regulator © 2006 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 VIN 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 5 5 4 4 3 3 2 2 D D C C B B A A ISP ISN ISN LX LX ISP NC VFB VFB 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 R 0Ohm Cs2 2.2nF C2 22uF CVCC 4.7uF GND 4 RZ3 400 R3 5.11K DBST R9 61.9k RZ2 4.02k R2 360 L1,Wurth-744311220 2.2uH,14mOhm,7x7mm,9A VIN CSS 47nF R4 5.11K CZ3 1500pF C4 47nF CF1 100pF |
类似零件编号 - SP7661 |
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类似说明 - SP7661 |
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