SP7661_07 datasheet(2/20 Pages) SIPEX

2 / 20 page

Mar -07 Rev N

SP766 Wide Input Voltage Range 3A, 600kHz Buck Regulator

ELECTRICAL SPECIFICATIONS

SpecificationsareforTAMB =TJ =25°C,andthosedenotedby♦applyoverthefulloperatingrange,-40°C<Tj<125°C.Unless

otherwisespecified:4.5V<Vcc<5.5V,3V<ViN<22V,BST=LX+5V,UVIN=3V,CVCC=1µF,CCOMP=0.1µF,Css=50nF.

VCC...................................................................................................7V

ViN.................................................................................................25V

BST................................................................................................ 30V

LX-BST...............................................................................-0.3Vto7V

LX........................................................................................-V to 30V

Allotherpins..........................................................-0.3VtoVCC +0.3V

StorageTemperature................................................... -65°Cto150°C

PowerDissipation........................................InternallyLimitedviaOTP

LeadTemperature(Soldering,10sec).......................................300°C

ESDRating........................................................................... 2kV HBM

ThermalResistanceθJC........................................................... 5°C/W

ABSOLUTE MAXIMUM RATINGS

Thesearestressratingsonlyandfunctionaloperationofthedeviceattheseratingsoranyotherabovethoseindicatedintheoperationsections

ofthespecificationsbelowisnotimplied.Exposuretoabsolutemaximumratingconditionsforextendedperiodsoftimemayaffectreliability.

PARAMETER

MIN TYP MAX UNITS ♦

CONDITIONS

QUIESCENT CURRENT

ViNSupplyCurrent

(Noswitching)

1.5

3.0

♦

VfB=0.9V

ViNSupplyCurrent

(switching)

BSTSupplyCurrent

(Noswitching)

0.2

0.4

♦

VfB=0.9V

BSTSupplyCurrent

(switching)

PROTECTION: UVLO

VccUVLOStartThreshold 4.00 4.25

4.50

♦

VccUVLOHysteresis

200

300

♦

UVINStartThreshold

2.30 2.50

2.65

♦

UVINHysteresis

200

300

400

♦

UVINInputCurrent

1.0

µA

♦

UVIN=3.0V

ERROR AMPLIFIER REFERENCE

ErrorAmplifierReference 0.792 0.800 0.808

2XGainConfig.,Measure

VfB;Vcc=5V

ErrorAmplifier

ReferenceOverLine

0.784 0.800 0.816

♦

COMPSinkCurrent

150

230

µA

♦ VfB=0.9V,COMP=0.9V

COMPSourceCurrent

-230 -150

-70

µA

♦ VfB=0.9V,COMP=0.9V

VfBInputBiasCurrent

200

♦

VfB=0.8V

COMPClamp

3.2

3.5

3.8

VfB=0.7V,TA=25

°C

COMPClampTemp.

Coefficient

-2.0

mV/

°C

VCC LINEAR REGULATOR

VCCOutputVoltage

4.7

5.0

5.3

♦ V

= 6 to 23V,

ILOAD=0mAto30mA

4.51

4.73

♦ ViN=5V,20mA

DropoutVoltage

250

500

750

♦

Vin-Vout=Dropoutvoltagewhen

Vccregulateddropsby2%.

IVCC=30mA.

SP7661 数据表(PDF) 2 Page - Sipex Corporation

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