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UC1108 Scheda tecnica(PDF) 3 Page - Unisonic Technologies |
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UC1108 Scheda tecnica(HTML) 3 Page - Unisonic Technologies |
3 / 8 page UC1108 Preliminary CMOS IC UNISONICTECHNOLOGIESCO.,LTD 3 of 8 www.unisonic.com.tw QW-R103-098.a ABSOLUTE MAXIMUM RATING PARAMETER SYMBOL RATINGS UNIT Voltage at VCC Pin to GND -0.3~36 V Voltage at CS, OUT to GND -0.3~7 V FB Input -40~10 V Output Current at OUT Internally limited A Operating Junction Temperature TOPR 150 °C Storage Temperature TSTG -65~150 °C Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. THERMAL RESISTANCES CHARACTERISTICS PARAMETER SYMBOL RATING UNIT Junction to Ambient θJA 190 °C/W ELECTRICAL CHARACTERISTICS (VCC=15V, TA=25°C, unless otherwise specified.) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT UVLO SECTION Start-Up Threshold VTH (ST) 17 18.5 21 V Minimal Operating Voltage VOPR(min) 8.2 9.2 10.2 V Reference Voltage BIAS Pin Voltage VBIAS RBIAS=200kΩ, After Turn On 1.0 1.1 1.2 V STANDBY CURRENT SECTION Start-Up Current IST VCC=VTH (ST)-0.5V, RBIAS=200kΩ,Before Start-Up 0.6 µA Operating Current ICC(OPR) RBIAS=200kΩ 390 480 µA DRIVE OUTPUT SECTION OUT Maximum Current Source IOUT RBIAS=200kΩ 28 36 44 mA CURRENT SENSE SECTION Current Sense Threshold VCS 490 513 535 mV Pre-Current Sense VCS(PRE) 390 413 435 mV Leading Edge Blanking 500 ns FEEDBACK INPUT SECTION Feedback Pin Input Leakage Current IFB VFB=4V 1.8 2.4 3.0 µA Feedback Threshold VFB 3.97 4.03 4.09 V Enable Turn-on Voltage VFB(EN) -2.0 -1.7 -1.4 V OUTPUT VOLTAGE COMPENSATION SECTION CPR Voltage VCPR Dons (Tons/T): From 55% to 0.02% 1.5 3.5 V CPR Sink Current ICPR 200 µA PROTECTION SECTION Over Voltage Protection VFB(OVP) 7 8 9 V |
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