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VIPER100B Datasheet(PDF) 5 Page - STMicroelectronics |
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VIPER100B Datasheet(HTML) 5 Page - STMicroelectronics |
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ELECTRICAL CHARACTERISTICS (continued) OSCILLATOR SECTION Symb ol Parameter Test Con ditio ns Mi n. Typ . Max. Un it FSW Oscillator Frequency Total Variation RT =8.2 K Ω CT =2.4 nF VDD =9 to15 V with RT ± 1% CT ± 5% (see fig. 6 and fig. 9) 90 100 110 KHz VOSCih Oscillator Peak Volt age 7.1 V VOSCil Oscillator Valley Voltage 3.7 V ERROR AMPLIFIER SECTION Symb ol Parameter Test Cond ition s Mi n. Typ . Max. Un it VDDre Vg Regulation Point ICOMP = 0 mA (see fig. 1) 12. 61313.4 V ∆VDDreg Total Variation TJ = 0 t o 100 oC2 % GBW Unity G ain Bandwidt h From Input = VDD to Output = VCOMP CO MP pin is open (see fig. 10) 150 KHz AVOL Open Loop Voltage Gain CO MP pin is open (see fig. 10) 45 52 dB Gm DC T ransconductance VCOMP = 2.5 V (see fig. 1) 1. 1 1.5 1.9 mA/V VCOMPL O Output Low Level ICOMP =-400 µAVDD =14 V 0.2 V VCOMPHI Output High Level ICOMP =400 µAVDD =12 V 4.5 V ICOMPLO Output Low Current Capabilit y VCOMP =2.5 V VDD =14 V -600 µA ICOMPHI Output High Current Capabilit y VCOMP =2.5 V VDD = 12 V 600 µA PWM COMPARATOR SECTION Symb ol Parameter Test Cond ition s Mi n. Typ . Max. Un it HID ∆VCOMP/∆IDpeak VCOMP = 1 t o 3 V 0.35 0.5 0.65 V/A VCOMPoff VCOMP offset IDp eak =10 mA 0.5 V IDpeak Peak Current Limit ation VDD = 12 V COMP pin open 6 8 11 A td Current Sense Delay to turn-off ID = 1 A 250 ns tb Blanking Time 250 360 ns ton( min) Minimum on T ime 350 ns SHUTDOWN AND OVERTEMPERATURE SECTION Symb ol Parameter Test Cond ition s Mi n. Typ . Max. Un it VCOMPth Restart threshold (see fig. 4) 0.5 V tDISsu Disable Set Up T ime (see fig. 4) 1.7 5 µs Ttsd Thermal Shutdown Temperature (see fig. 8) 140 170 oC Thyst Thermal Shutdown Hysteresis (see fig. 8) 40 oC VIPER100B/BSP 5/20 |
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