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| Chopper Regulators PQ1CF1 PQ1CF1 TO-220 Package Chopper Regulator s Features Maximum switching current : 3.5A With ON/OFF control function Built-in oscillation circuit (oscillation frequency : TYP.70kHz) Built-in overheat protection, overcurrent protection function Variable output voltage (1.26 to 35V /-1.26 to -30V) [Possible to choose step down output/inversing output according to external connection circuit] (24.6) s Outline Dimensions (Unit : mm) 10.2MAX 3.20.1 4.50.2 2.80.2 7.40.2 3.60.2 PQ1CF1 (1.5) 2.0 Facsimiles Printers Switching power supplies Personal computers 5-0.80.1 (0.5) 3.20.5 4-(1.7) (5.0) 8.20.7 1q 3q 5 q 2q 4q 1 VIN 2 VOUT 3 COM 4 OADJ 5 VC s Absolute Maximum Ratings Parameter *1 (Ta=25C) Symbol VIN VADJ Vi-o VOUT VC ISW PD1 PD2 Tj Topr Tstg Tsol Rating 40 7 41 -1 -0.3 to 40 3.5 1.5 15 150 -20 to +80 -40 to +150 260 (For 10s) Unit V V V V V A W W C C C C *2 *3 *4 Input voltage Error input voltage Input-output voltage Output-COM voltage ON/OFF control voltage Switching current terminal voltage 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 VOUT 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 s Applications 5.00.5 16.40.7 Chopper Regulators s Electrical Characteristics Parameter Output saturation voltage Reference voltage Temperature coefficient in reference voltage Load regulation Line regulation Efficiency Oscillation frequency Oscillation frequency temperature fluctuation Maximum duty Overcurrent detecting level Charge current1 Charge current2 Input threshold voltage On threshold voltage Stand-by current Output OFF-state consumption current PQ1CF1 (Unless otherwise specified, conditions shall be VIN=12V, Io=0.5A, VO=5V, Ta=25C) Symbol VSAT Vref Vref |RegL| |RegI| fo fo DMAX IL ICHG1 ICHG2 VTHL VTHH VTH(ON) ISD IqS Conditions ISW=3A Tj=0 to 125C IO=0.5 to 3A VIN=8 to 35V IO=3A Tj=0 to 125C 4terminal is open 24terminal is open, 5terminal 24terminal is open, 5terminal=0.7V Duty=0%, 4terminal=0V, 5terminal Duty=DMAX, 4terminal is open,5terminal 4terminal=0V, 5terminal VIN=40V, 5terminal=0V VIN=40V, 5terminal=0.7V MIN. 1.235 60 90 3.9 -50 -150 0.75 1.55 0.5 TYP. 1.4 1.26 0.6 0.2 0.6 80 70 5 5.1 -30 -100 0.9 1.8 0.6 140 8 MAX. 1.8 1.285 1.5 2.5 80 6.3 -10 -50 1.2 2.05 0.7 400 16 Unit V V % % % % kHz % % A A A V V V A mA s Block Diagram 1 VIN 2 VOUT Voltage regulator circuit ON/OFF circuit PWM COMP. + - Overcurrent detecting circuit F/F Q R S Oscillator Soft start ERROR AMP. + - 4 OADJ Vref Overheat detecting circuit 3 COM 5 VC Fig.2 20 Power dissipation PD (W) Power Dissipation vs. Ambient Temperature PD1 :No heat sink PD2 :With infinite heat sink PD2 Fig.1 Test Circuit 4 q ISD IQS VIN CIN 220F 1 q 2 q PQ1CF1 + L 90H R2 5.1k D R1 1k IO VO 15 A 5 q 3 q 0.068F + 10 CO 1000F 5 L : HK-12S120-9000R (made by Toho Co.) D : ERC80-004 (made by Fuji electronics Co.) PD1 0 -20 0 20 40 60 80 100 Ambient temperature Ta (C) Note) Oblique line portion : Overheat protection may operate in this area. ,, ,, ,, ,, Load Chopper Regulators PQ1CF1 s Step Down Type Circuit Diagram (5V output) 4 q 2 q PQ1CF1 5 q + 3 RC q CIN 5.1k 220F CC 0.068F 1 q L 90H R2 3k D R1 1k VO=5V VIN 8 to 35V + CO 1000F ON/OFF control s Polarity Inversion Type Circuit Diagram (-5V output) L 65H R2 3k D R1 1k 4 q 2 q PQ1CF1 5 q 3 RC q CIN 5.1k 220F CC 0.068F + 1 q VIN 5 to 30V CO 2200F VO=-5V ON/OFF control Load + Load |
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