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AP3844CM-E1 Datasheet(PDF) 7 Page - Diodes Incorporated |
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AP3844CM-E1 Datasheet(HTML) 7 Page - Diodes Incorporated |
7 / 14 page CURRENT MODE PWM CONTROLLER AP384XC Data Sheet 7 Jul. 2013 Rev. 2. 0 BCD Semiconductor Manufacturing Limited Electrical Characteristics (Continued) Parameter Symbol Conditions Min Typ Max Unit UNDER -VOLTAGE LOCKOUT SECTION Start Threshold VTH(ST) AP3842C/AP3844C 15 16 17 V AP3843C/AP3845C 7.8 8.4 9.0 V Min. Operation Voltage (After Turn On) VOPR (Min.) AP3842C/AP3844C 8.5 10.0 11.5 V AP3843C/AP3845C 7.0 7.6 8.2 V PWM SECTION Max. Duty Cycle D(Max.) AP3842C/AP3843C 95 97 100 % D(Max.) AP3844C/AP3845C 46 48 50 % Min. Duty Cycle D(Min.) 0 % TOTAL STANDBY CURRENT SECTION Start-up Current IST AP3842C/AP3844C, VCC=14V 50 80 μA AP3843C/AP3845C, VCC=6.5V 50 80 Operating Supply Current ICC(OPR) Vpin3=Vpin2=0V 8 12 mA Zener Voltage VZ ICC=25mA 30 34 V OVER-TEMPERATURE PROTECT SECTION Shutdown Temperature TSHUT (Note 6) 155 oC Temperature Hysteresis THYS (Note 6) 25 oC A= , 0 ≤ Vpin3 ≤ 0.8V ΔVPin 3 Note 5: Here gain is defined as: ΔVPin 1 Note 6: These parameters, although guaranteed, are not 100% tested in production. Note 7: This parameter is measured with RT=10k Ω to VREF, it contributes 0.3mA of current to the measured value. So the total current flowing into the CT pin will be 0.3mA higher than the measured value approximately. Note 4: Parameters are tested at trip point of latch with Vpin2 = 0. Figure 4. Basic Test Circuit 1 2 8 7 AP384XC 3 45 6 V REF V CC OUTPUT GND R T/CT I SENSE V FB COMP V REF V CC OUTPUT GND 1K 1W C T 5k I SENSE ADJUST 1k ERROR AMP ADJUST 4.7k 100k 2N2222 4.7k R T 0.1 μF 0.1 μF A |
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