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VIPER50ASP 数据表(PDF) 5 Page - STMicroelectronics |
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VIPER50ASP 数据表(HTML) 5 Page - STMicroelectronics |
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5 / 23 page  VIPer50/SP - VIPer50A/ASP 5/23 ELECTRICAL CHARACTERISTICS (continued) OSCILLATOR SECTION ERROR AMPLIFIER SECTION PWM COMPARATOR SECTION SHUTDOWN AND OVERTEMPERATURE SECTION Symbol Parameter Test Conditions Min Typ Max Unit FSW Oscillator Frequency Total Variation Rt=8.2KΩ; Ct=2.4nF VDD=9 to 15V; with Rt± 1%; Ct± 5% (see fig. 6 and fig. 9) 90 100 110 kHz VOSCih Oscillator Peak Voltage 7.1 V VOSCil Oscillator Valley Voltage 3.7 V Symbol Parameter Test Conditions Min Typ Max Unit VDDreg VDD Regulation Point ICOMP=0mA (see fig. 1) 12.6 13 13.4 V ∆V DDreg Total Variation Tj=0 to 100°C 2 % GBW Unity Gain Bandwidth From Input =VDD to Output = VCOMP COMP pin is open (see fig. 10) 150 kHz AVOL Open Loop Voltage Gain COMP pin is open (see fig. 10) 45 52 dB Gm DC Transconductance VCOMP=2.5V (see fig. 1) 1.1 1.5 1.9 mA/V VCOMPLO Output Low Level ICOMP= -400µA; VDD=14V 0.2 V VCOMPHI Output High Level ICOMP=400µA; VDD=12V 4.5 V ICOMPLO Output Low Current Capability VCOMP=2.5V; VDD=14V -600 µA ICOMPHI Output High Current Capability VCOMP=2.5V; VDD=12V 600 µA Symbol Parameter Test Conditions Min Typ Max Unit HID ∆V COMP / ∆IDPEAK VCOMP=1 to 3 V 1.422.6 V/A VCOMPoff VCOMP Offset IDPEAK=10mA 0.5 V IDpeak Peak Current Limitation VDD=12V; COMP pin open 1.5 2 2.7 A td Current Sense Delay to Turn-Off ID=0.5A 250 ns tb Blanking Time 250 360 ns ton(min) Minimum On Time 350 1200 ns Symbol Parameter Test Conditions Min Typ Max Unit VCOMPth Restart Threshold (see fig. 4) 0.5 V tDISsu Disable Set Up Time (see fig. 4) 1.7 5 µs Ttsd Thermal Shutdown Temperature (See fig. 8) 140 170 °C Thyst Thermal Shutdown Hysteresis (See fig. 8) 40 °C |
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