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| Primary Regulators PQ1PF2 PQ1PF2 s Features (Under Development) Primary Regulator for Switching Power Supply (30W Class) s Outline Dimensions (Unit : mm) 7.40.2 3.60.2 5-terminal lead forming package (equivalent to TO-220) Built-in oscillation circuit (oscillation frequency : TYP.100kHz) Output for power supply : 30W class Built-in overheat protection, overcurrent protection function 10.2MAX 3.20.1 4.50.2 2.80.2 5-0.80.1 (0.5) 3.20.5 4-(1.7) (5.0) 8.20.7 * ( ) : Typical dimensions * Radius of lead forming portion R=TYP 1.0 1q 3q 5 q 2q 4q 1 Drain (VDS) 2 GND 3 Control (CA) 4 Feed back (FB) 5 Supply voltage (VCC) s Absolute Maximum Ratings Parameter Drain-GND (source) voltage Drain current Power supply voltage FB terminal input voltage CA terminal input current Power dissipation Junction temperature Operating temperature Storage temperature Soldering temperature Voltage between VCC terminal and GND terminal. Voltage between FB-terminal and GND terminal. PD1:No heat sink, PD2:With infinite heat sink Overheat protection may operate at 125= *1 *2 *3 *4 *1 *2 *3 *4 * Please refer to the chapter " Handling Precautions ". " In the absence of confirmation by device specification sheets,SHARP takes no responsibility for any defects that may occur in equipment using any SHARP devices shown in catalogs,data books,etc.Contact SHARP in order to obtain the latest version of the device specification sheets before using any SHARP's device. " 4.4MIN Switching power supplies for VCRs Switching power supplies for peripheral equipment of PCs (FDD/CD-ROM drive/HDD) (24.6) s Applications PQ1PF2 (1.5) 2.0 5.00.5 16.40.7 Primary Regulators s Electrical Characteristics Parameter Drain-source onstate resistance Drain-source leakage current Oscillation frequency Temperature change in oscillation frequency Maximum duty FB threshold voltage FB current CA threshold voltage CA sink current Overcurrent detecting level Operation starting voltage Operation stopping voltage Stand-by current Output OFF-mode consumpion current Output-operating mode consumption current Charging current PQ1PF2 (Unless otherwise specified,conditions shall be VDS=10V,VCC=18V,VCA=OPEN,VFB=2.2V,RL=56, Ta=25C) Symbol RDS (ON) IDSS fo fo DMAX VFBL VFBH VFB (OCP) IFB VCAL VCAH VCA (ON/OFF) VCA (OVP) ICAIN ID (OCP) VCC (ON) VCC (OFF) ICC (ST) ICC (OFF) ICC (OP) ICA (CHG) Conditions ID=1.3A VDS=500V,VCC=7V VCA=GND,VFB=GND Tj=0 to 125C Duty=0% Duty=DMAX VCA=6V VFB=GND Duty=0% Duty=DMAX MIN. 90 42 2.6 -800 0.49 7.2 20 15.5 8.5 -15 TYP. 2.2 100 5 45 0.9 1.8 2.8 -620 0.9 1.8 0.6 7.7 36 1.8 17.0 9.3 100 0.6 10 -10 MAX. 3.0 250 110 50 3.1 -440 0.74 8.2 52 18.5 10.1 150 1.8 18 -5 Unit A kHz % % V V V A V V V V A A V V A mA mA A VFB=1V,VCA=6V VDS=OPEN,VFB=OPEN VDS=OPEN,VFB=OPEN VDS=OPEN,VCC=14V, VFB=OPEN VDS=OPEN,VCA=GND VFB=OPEN VCA=GND,VFB=OPEN Fig.1 Test Circuit CIN 100F 0.01F Fig. 2 Power Dissipation vs. Ambient Temperature 25 Power dissipation PD (W) RL A + A VCC VFB 5 q 1 q PQ1PF2 4 q 3 q 2 q PD1 :No heat sink PD2 :With infinite heat sink PD2 R2 20 15 A VCA A VDS s Block Diagram g CA 3 Low voltage malfunction prevention circuit Cut-off voltage detecting circuit OFF voltage detecting circuit Overheat detection circuit Constant voltage source 10 5 PD1 0 -20 VCC 5 VDS 1 0 20 40 60 Ambient temperature Ta (C) Note) Oblique line portion:Overheat protection may operate in this area. ,,, ,,, ,,, ,,, 80 OSC RQ S Overload cut-off voltage detecting circuit PWM + - FB 4 DET Drive circuit Overcurrent detecting circuit 2 GND |
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