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SGLS371–JANUARY2007

ELECTRICALCHARACTERISTICS

–55°C<TA=TJ<125°C,VDD=12V,fOSC=100kHz(unlessotherwisenoted)

PARAMETER

VoltageReference

COMP=FB,TJ=25°C

VFB

Feedbackvoltage

TJ=25°C

4.5V<VDD<52V–40°C<TJ<125°C

–55°C<TJ<125°C

GateDriverIsrcIsnkVGATE

GatedriverpullupcurrentGatedriverpulldowncurrentGatedriveroutputvoltage

VGATE=(VDD–VGDRV),for12V<VDD<52VFOSC=300kHz,Drivernotswitching,4.5V<VDD<52V

3.811065190100

0°C<TJ<125°C

VILIMOCDFVILIM(rst)Oscillator

Oscillatorfrequencyrange(1)

FOSC

OscillatorfrequencyFrequencylineregulation

VRMP

Rampamplitude

RRC=200k ,CRC=470pFRRC=68.1k ,CRC=470pF12V<VDD<52V4.5V<VDD<12V4.5V<VDD<52VVDD=12VVDD=30V

FOSC=100kHz,CL=470pFFOSC=300kHz,CL=470pF

938783585255–9–20

VDD÷10

200100959310

12500200

100300

50011534500

%VkHz

OvercurrentthresholdOvercurrentdutycycle(1)Overcurrentresetthreshold

100

150

4.5V<VDD<52V–40°C<TJ<125°C

–55°C<TJ<125°C

6555351252006

3003008

10

mAmAV

689686679675

696696696696

702703710710

mV

TESTCONDITIONS

MIN

TYP

MAX

UNIT

QuiescentCurrentIqq

Devicequiescentcurrent

1.5

3

mA

UndervoltageLockout(UVLO)VUVLO(on)VUVLO(off)VUVLO(HYST)SoftStartRSS(chg)RSS(dchg)VSSRST

Internalsoft-startpullupresistanceInternalsoft-startpulldownresistance

Soft-startresetthreshold

105305150100100100

1704852001401401502200

%mVmVk k mV

TurnonthresholdTurnoffthresholdHysteresis

4.254.05200

2754.5

VmV

OvercurrentProtection

Pulse-WidthModulatortMINDMAXKPWM

MinimumcontrollablepulsewidthMaximumdutycycleModulatorandpower-stagedcgain

InputbiascurrentOpen-loopgain(1)Unitygainbandwidth(1)Outputsourcecurrent

VFB=0.6V,COMP=1V

601.5100

ns%V/V

ErrorAmplifierIIBAOLGBWPICOMP(src)(1)

100803250

250

nAdBMHzµA

Bydesignonly.Nottestedinproduction.

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