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AP3772H Datasheet(PDF) 5 Page - BCD Semiconductor Manufacturing Limited |
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AP3772H Datasheet(HTML) 5 Page - BCD Semiconductor Manufacturing Limited |
5 / 12 page Preliminary Datasheet Low-Power Off-line Primary Side Regulation Controller AP3772H Dec. 2012 Rev. 1. 1 BCD Semiconductor Manufacturing Limited 5 Electrical Characteristics VCC =15V, TA=25°C, unless otherwise specified. Parameter Symbol Conditions Min Typ Max Unit UVLO SECTION Startup Threshold VTH (ST) 13 15.5 18 V Minimal Operating Voltage VOPR(MIN) 3 3.5 4.5 V STANDBY CURRENT SECTION Startup Current IST VCC=VTH (ST)-1V, Before startup 0 0.2 0.6 µA Operating Current ICC(OPR) Static current 250 500 600 µA DRIVE OUTPUT SECTION Output Current Sink ISINK Apply 1V @ OUT pin 150 330 500 mA Source ISOURCE 30 40 50 mA Maximum Off Time tOFF(MAX) 14 18 25 ms CURRENT SENSE SECTION Current Sense Threshold Voltage at Heavy Load VCS1 500 525 550 mV Leading Edge Blanking tLEB The minimum power switch turn on time 300 500 650 ns FEEDBACK INPUT SECTION Input Resistance of FB Pin RFB VFB=4V 1 1.6 2 M Ω Feedback Threshold VFB 3.98 4.04 4.1 V LINE COMPENSATION SECTION Line Compensation Transconductance (Note 2) gm 0.8 1.2 1.6 µS CABLE COMPENSATION SECTION Cable Compensation Voltage ∆V FB_CABLE /VFB % AP3772HA 5 6 7 % AP3772HB 2 3 4 AP3772HC 0 DYNAMIC FUNCTION SECTION Delay Time for Dynamic Function tD 110 150 200 µs Trigger Voltage for Dynamic Function VTRIGGER 120 150 180 mV PROTECTION SECTION Over Voltage Protection VFB(OVP) 7 8 9 V Maximum On Time of Primary Side tonp (MAX) 20 35 50 µs Note 2: Line compensation voltage on CS pin: LINE m PRI AUX DC IN CS R g R R R N N V V ⋅ ⋅ + ⋅ ⋅ = 7 6 6 _ Δ |
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