Chopper Regulators PQ1CF1 PQ1CF1 TO-220 Type Chopper Regulator ■ ■ 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(Vref to 35V /-Vref to -30V) [Possible to choose step down output/inversing output according to external connection circuit] (Unit : mm) Outline Dimensions ● ■ 4.5±0.2 10.2MAX 2.8±0.2 16.4±0.7 PQ1CF1 5–0.8±0.1 Applications 2.0 (1.5) 5.0±0.5 (24.6) 7.4±0.2 3.6±0.2 f3.2±0.1 (0.5) 3.2±0.5 Facsimiles ● Printers ● Switching power supplies ● Personal computers ● 4.4MIN ● (5.0) 4–(1.7) 8.2±0.7 1 2 3 4 5 1 2 3 4 5 ■ Absolute Maximum Ratings Parameter ❇1 ❇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 Voltage between VIN terminal and COM terminal. ❇2 Voltage between VOUT terminal and COM terminal. ❇3 Voltage between VC terminal and COM terminal. ❇4 Overheat protection may operate at 125<=Tj<=150˚C VIN VOUT COM OADJ VC (Ta=25˚C) Symbol VIN VADJ Vi-o VOUT VC ISW PD1 PD2 Tj Topr Tstg Tsol Rating Unit 40 V 7 V 41 V –1 V –0.3 to 40 V 3.5 A 1.5 W 15 W 150 ˚C –20 to+80 ˚C –40 to+150 ˚C 260 (For 10s) ˚C • Please refer to the chapter " Handling Precautions ". Notice 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 device specification sheets before using any SHARP device. Internet Internet address for Electronic Components Group http://sharp-world.com/ecg/ Chopper Regulators ■ PQ1CF1 Electrical Characteristics (Unless otherwise specified, conditions shall be VIN=12V, Io=0.5A, VO=5V, Ta=25˚C) Parameter Output saturation voltage Reference voltage Reference voltage temperature fluctuation Load regulation Line regulation Efficiency Oscillation frequency Oscillation frequency temperature fluctuation Maximum duty Overcurrent detecting level Charge current 1 Charge current 2 Symbol VSAT Vref ∆Vref | RegL | | RegI | η fo ∆fo –– Tj=0 to 125˚C IO=0.5 to 3A VIN=8 to 35V IO=3A –– Tj=0 to 125˚C DMAX rterminal is open –– IL ICHG1 wrterminal is open, tterminal ICHG2 wrterminal is open, tterminal=0.7V Duty=0%, rterminal=0V, tterminal VTHL VTHH Duty=DMAX, rterminal is open, tterminal VTH(ON) rterminal=0V, tterminal VIN=40V, tterminal=0V ISD VIN=40V, tterminal=0.7V IqS Input threshold voltage On threshold voltage Stand-by current Output OFF-state dissipation current ■ Conditions ISW=3A MIN. –– 1.235 –– –– –– –– 60 –– 90 3.9 –50 –150 0.75 1.55 0.5 –– –– TYP. 1.3 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 µA µA V V V µA mA Block Diagram 2 VOUT 1 VIN Voltage regulator circuit ON/OFF circuit Soft start ↓ PWM COMP. Overcurrent detecting circuit F/F Oscillator + – Q R S ERROR AMP. 4 OADJ + – Vref Overheat detecting circuit 3 COM 5 VC Fig. 1 Test Circuit 2 PQ1CF1 A 5 + VIN 3 CIN 220µF 0.068µF L 90µH R2 5.1kΩ D R1 1kΩ IO + VO CO 1000µF L : HK-12S120-9000R(made by Toho Co.) D : ERC80-004(made by Fuji electronics Co.) Power dissipation PD (W) q 1 20 Load 4 ISD IQS ;; ;; ;; ;; Fig. 2 Power Dissipation vs. Ambient Temperature 15 10 5 PD1 :No heat sink PD2 :With infinite heat sink PD2 PD1 0 –20 0 20 40 60 80 100 Ambient temperature Ta (˚C) Note) Oblique line portion : Overheat protection may operate in this area. Chopper Regulators PQ1CF1 Fig. 3 Overcurrent Protection Characteristics Ta=25˚C Output voltage Vo (V) 6 5 100 VIN=12V Vo=5V CIN=220µF Co=1000µF L=90µH Tj=25˚C VO=12V, IO=1A 90 Efficiency η (%) 7 Fig. 4 Efficiency vs. Input Voltage 4 3 2 80 VO=12V, IO=3A 70 VO=5V, IO=3A VO=5V, IO=1A 60 1 0 0 1 2 3 4 5 6 Output current Io (A) 7 Fig. 5 Switching Current vs. Output Saturation Voltage 0 2 Tj=25˚C 4 3 2 1 0 Fig. 7 Load Regulation vs. Output Current Load regulation RegL (%) 1.5 Tj=25˚C, L=90µH, CIN=220µF Co=1000µF VIN=12V, Vo=5V C=0.068µF, R=5.1kΩ 1 40 0.5 0 –0.5 VIN=12V Vo=5V 1 0 –1 –2 –25 0.5 1.0 1.5 2.0 Output saturation voltage VSAT (V) 0 25 50 75 100 125 Junction temperature Tj (˚C) Fig. 8 Line Regulation vs. Input Voltage 1.5 Line regulation RegI (%) 0 10 20 30 Input voltage VIN (V) Fig. 6 Reference Voltage Fluctuation vs. Junction Temperature Reference voltage fluctuation (%) Switching current ISW (A) 5 50 8 Tj=25˚C, L=90µH, CIN=220µF Co=1000µF, Io=0.5A, Vo=5V C=0.068µF, R=5.1kΩ 1 0.5 0 –0.5 0 0.5 1 1.5 2 2.5 Output Current Io (A) 3 0 5 10 15 20 25 30 Input Voltage VIN (V) 35 40 Chopper Regulators PQ1CF1 Fig. 9 Oscillation Frequency Fluctuation vs. Junction Temperature VIN=12V Vo=5V Overcurrent detecting level fluctuation (%) 0 –5 –10 –25 5 0 –5 –15 –25 0 25 50 75 100 125 Junction temperature Tj (˚C) 15 Operating dissipation current IQ' (mA) VTHH 1.5 VTHL 1 VTH(ON) 0.5 VIN=12V, Vo=5V, CIN=220µF, Co=1000µF, L=90µH, C=0.068µF, 0 R=5.1kΩ –40 –20 0 20 40 60 80 100 120 140 Junction temperature Tj (˚C) L 90µH 4 Io=1A 5 No load 0 5 3 RC 5.1kΩ CC 0.068µF 10 20 30 Input voltage VIN (V) VO=5V L 65µH 4 1 R2 3kΩ D R1 1kΩ 2 PQ1CF1 + CO 1000µF 40 ■ Polarity Inversion Type Circuit Diagram (-5V output) Load PQ1CF1 CIN 220µF 10 2 + Tj=25˚C Vo=5V Io=3A 0 ■ Step-down Type Circuit Diagram (5V Output) 1 0 25 50 75 100 125 Junction temperature Tj (˚C) Fig.12 Operating Dissipation Current vs. Input Voltage 2 Threshold voltage VTH(ON), VTHL, VTHH 10 –10 Fig.11 Threshold Voltage vs. Junction Temperature VIN 8 to 35V 15 VIN 5 to 30V 5 + CIN 220µF 3 RC 5.1kΩ CC 0.068µF R2 3kΩ D R1 1kΩ + CO 2200µF Load Oscillation frequency fluctuation (%) 5 Fig.10 Overcurrent Detecting Level Fluctuation vs. Junction Temperature VO=–5V ON/OFF control ON/OFF control NOTICE ● The circuit application examples in this publication are provided to explain representative applications of SHARP devices and are not intended to guarantee any circuit design or license any intellectual property rights. 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