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| Chopper Regulators PQ2CF1 PQ2CF1 s Features (Under Development) TO-220 Package, Step Up Output Chopper Regulator s Outline Dimensions (Unit : mm) (24.6) PQ2CF1 (1.5) 2.0 5.00.5 s Applications Personal computers/Word processors Printers Switching power supplies Facsimiles 1q 3q 5 q 2q 4q 5-0.80.1 (0.5) 3.20.5 4-(1.7) (5.0) 8.20.7 * ( ) : Typical value * Radius of lead forming portion:R=TYP.1.0 1 VSW 2 VIN 3 COM 4 VC 5 OADJ s Absolute Maximum Ratings Parameter *1 *2 (Ta=25C) Symbol VIN VSW VADJ VC ISW PD1 PD2 Tj Topr Tstg Tsol Rating 35 35 7 7 2.5 1.5 15 150 -20 to +80 -40 to +150 260 (For 10s) Unit V V V V A W W C C C C *3 *4 Input voltage Switching voltage Error input voltage ON/OFF control voltage Switching current Power dissipation (No heat sink) Power dissipation (With infinite heat sink) Junction temperature Operating temperature Storage temperature Soldering temperature *1 *2 *3 *4 Voltage between VIN terminal and COM terminal Voltage between VSW terminal and COM terminal Voltage between VC terminal and COM terminal Overheat protection may operate at 125= " 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 16.40.7 Maximum switching current : 2.5A Built-in soft start function Built-in oscillation circuit (oscillation frequency : TYP.50kHz) Built-in overheat protection,overcurrent protection function Variable output voltage (4.5 to 40V) [Possible to choose step up output/flyback method acording to external connection circuit] 10.2MAX 3.20.1 4.50.2 2.80.2 7.40.2 3.60.2 Chopper Regulators s Electrical Characteristics Parameter Output saturation voltage Reference voltage Temperature change in reference voltage Load regulation Line regulation Efficiency Oscillation frequency Oscillation frequency temperature fluctuation Maximum duty Over current detecting level Charge current 1 Charge current 2 Input threshold voltage Vc terminal low level voltage Vc terminal high level voltage On threshold voltage Stand-by current Output OFF-state consump-tion current PQ2CF1 (Unless otherwise specified, conditions shall be VIN=5V,Io=0.2A,VC=12V, Ta=25C) Symbol VSAT Vref Vref |RegL| |RegI| fo fo DMAX IL ICHG1 ICHG2 VTHL VCH VCL VTHON ISD IqS Conditions ISW=2A Tj=0 to 125C IO=70 to 570mA VIN=3.5 to 10V IO=0.5A Tj=0 to 125C 5 terminal is open Duty=50%, 4 terminal=0V, 4 terminal 4 terminal=0.5V, 4 terminal Duty=0%, 4 terminal 1 terminal is open, 5 terminal=1.1V 1 terminal is open, 5 terminal=1.4V 1 terminal is open, 4 terminal VIN=35V, 4 terminal=0V,No L,CO, D,R1,R2 VIN=35V, 4 terminal=0.5V,No L, CO,D,R1,R2 MIN. 1.235 40 90 2.7 -80 -150 0.55 1.65 0.3 0.1 TYP. 0.6 1.26 0.5 0.1 0.2 85 50 5 4.4 -50 -100 0.75 1.85 0.45 0.2 270 4.0 MAX. 1.2 1.285 1.5 1.5 60 5.8 -20 -50 0.95 2.05 0.6 0.3 400 12 Unit V V % % % % kHz % % A A A V V V V A mA Fig.1 Test Circuit Fig.2 20 L 90H D R2 R1 1k IO VO Power Dissipation vs. Ambient Temperature PD1 :No heat sink PD2 :With infinite heat sink PD2 A + CIN 2 q 100F 0.047F 1 q Power dissipation PD (W) + VIN 4PQ2CF15 q q 1k 3 q CO 470F Load ISD IQS 15 10 L : HK-12S100-9000 (made by Toho Co.) D : ERC80-004 (made by Fuji electronics Co.) 5 s Block Diagram VIN 2 F/F RQ Voltage regulator circuit PD1 VSW 1 0 -20 0 20 40 60 80 100 Ambient temperature Ta (C) Note) Oblique line portion : Overheat protection may operate in this area. ,, ,, ,, ,, S Oscillator + - Amp. COMP. + - 5 Vref OADJ Error amp. Overcurrent Low voltage malfunction protection prevention circuit circuit Overheat protection circuit ON/OFF Soft start circuit 4 VC 3 COM Chopper Regulators s Step Up Type Circuit Diagram (12V output) PQ2CF1 L 90H CIN 100F 4 q 1k 0.47F 3 q 2 q 1 q 5 q D R2 8.56k R1 1k IO VO12V VIN 5V CO 470F ON/OFF control s Flyback Method Circuit Diagram D CIN 100F VIN 0.47F IO VO 4 q 1k 3 q 5 q R1 1k CO 470F Load + 2 q 1 q R2 + Load + + |
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