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AT1731AP Datasheet(PDF) 4 Page - Aimtron Technology |
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AT1731AP Datasheet(HTML) 4 Page - Aimtron Technology |
4 / 22 page AT1731A Preliminary Product Information DC-DC Power IC for TFT Panel 7F, No.9,PARK AVENUE. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C. Tel: 886-3-563-0878 Fax: 886-3-563-0879 WWW: http://www.aimtron.com.tw 2/8/2006 REV:1.1 Email: service@aimtron.com.tw 4 Electrical Characteristics (Vin=3.0V, SHDN=Vin, VDDP=VDDN=10V, Ta=+25℃, unless otherwise noted) Parameter Symbol Test Condition Min. Typ. Max Units Input operating voltage Vin 2.6 ― 5.5 V Input under-voltage threshold VUVLO Vin Rising 2.45 2.5 2.55 V Vin UVLO hysteresis ― 120 ― mV Vin Quiescent Current Iin VFB=VFBP=1.23V, VFBN= - 0.2V 1 1.5 mA Vin Shutdown Current ISHDN SHDN=GND 1 10 uA VDDP Quiescent Current IVDDP VFBP=1.5V 0.5 0.8 mA VDDP Shutdown Current SHDN=GND, VDDP=15V 1 10 uA VDDN Quiescent Current IVDDN VFBN= - 0.2V 0.5 0.8 mA VDDN Shutdown Current SHDN=GND, VDDN=15V 1 10 uA Main Step-Up Converter Main Output Voltage Range VMAIN Vin 15 V Feedback Regulation voltage VFB Ta=+25℃ 1.21 1.23 1.24 V FB Input Bias Current IFB VFB=1.23V -50 ― 50 nA Operating Frequency fOSC Ta=+25℃ 1.1 1.2 1.3 MHz Oscillator Maximum Duty Cycle 80 85 90 % Load Regulation 0 mA<ILX<300 mA 0.2 % Line Regulation 2.6V < Vin < 5.5V 0.1 %/V Trans-conductance 317 us LX Switch On-Resistance RLX-DS(ON ) ILX=300mA 0.25 0.5 Ω LX Leakage Current ILX VLX=15V 0.1 20 uA LX Current Limit ILIM Vin=3.3V 2.0 2.2 2.5 A Maximum RMS LX Current 1.87 A Current Iss 2 uA Soft-Start Reset switch resistance RSS 100 Ω Short- circuit Capacitor charge current - 1.0 - uA Negative Charge-Pump VDDN Input Supply Range VDDN Vin 15 V Operating Frequency fCHN 0.5 x fOSC Hz FBN Feedback Regulation Voltage VFBN -50 0 +50 mV FBN Input Bias Current IFBN VFBN=0V -50 +50 nA P-ch On-Resistance RPCH-DS (ON) 5 10 Ω VFBN=+50mV 2 4 Ω N-ch On-Resistance RNCH-DS (ON) VFBN=-50mV 20 KΩ Maximum RMS SWN Current 50 mA Positive Charge-Pump VDDP Input Supply Range VDDP Vin 15 V Operating Frequency fCHP 0.5 x fOSC Hz FBP Feedback Regulation Voltage VFBP 1.21 1.23 1.24 V FBP Input Bias Current IFBP VFBP=1.23V -50 +50 nA P-ch On-Resistance RPCH-DS( 5 10 Ω |
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