Chopper Regulators PQ2CF1 PQ2CF1 TO-220 Package, Step Up Output Chopper Regulator ■ ■ Features 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 35V) [Possible to choose step up output / flyback method according to external connection circuit] (Unit : mm) Outline Dimensions ● 4.5±0.2 10.2MAX φ3.2±0.1 16.4±0.7 3.6±0.2 7.4±0.2 PQ2CF1 5–0.8±0.1 2.0 (1.5) 5.0±0.5 (24.6) 2.8±0.2 (0.5) 3.2=0.5 ■ Applications (5.0) 4–(1.7) Personal computers / Word processors Printers ● Switching power supplies ● Facsimiles 4.4MIN ● ● 8.2±0.7 ● 1 2 3 4 5 • ( ) : Typical value • Radius of lead forming portion : R=TYP.1.0 1 2 3 4 5 ■ Absolute Maximum Ratings Parameter ❇1 ❇2 ❇3 ❇4 ❇1 ❇2 ❇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 VSW VIN COM VC OADJ (Ta=25˚C) 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 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<=Tj<=150˚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 ■ PQ2CF1 Electrical Characteristics (Unless otherwise specified, conditions shall be VIN=5V,Io=0.2A,Vo=12V, 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 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 Symbol VSAT Vref ∆Vref | RegL | | RegI | η fo ∆fo DMAX IL ICHG1 ICHG2 VTHL VCH VCL VTHON Stand-by current ISD Output OFF-state dissipation current Iq S ■ Block Diagram Conditions ISW=2A –– Tj=0 to 125˚C IO=70 to 570mA VIN=3.5 to 10V IO=0.5A –– Tj=0 to 125˚C 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 VIN 2 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 MAX. 1.2 1.285 –– 1.5 1.5 –– 60 –– –– 5.8 –20 –50 0.95 2.05 0.6 0.3 Unit V V % % % % kHz % % A µA µA V V V V –– 270 400 µA –– 4.0 12 mA Vsw 1 F/F R Q Voltage regulator circuit Amp. S Oscillator + 5 OADJ – + COMP. Error amp. Vref Low voltage Overcurrent malfunction protection prevention circuit circuit Overheat protection circuit ON/OFF circuit Soft start 4 VC Fig. 1 Test Circuit VIN 2 A + CIN 100µF 0.047µF 1 4 PQ2CF1 3 1kΩ 3 R2 R1 1kΩ + 20 VO CO 470µF L : HK-12S100-9000 (made by Toho Co.) D : ERC80-004 (made by Fuji electronics Co.) Power dissipation PD (W) ISD IQS IO D ;; ;; ;; ;; Fig. 2 Power Dissipation vs. Ambient Temperature Load L 90µH 3 COM 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 PQ2CF1 Fig. 3 Overcurrent Protection Characteristics 100 15 VIN=5V Vo=12V CIN=100µF Co=470µF L=90µH 10 90 80 Efficiency η (%) Output voltage Vo (V) Fig. 4 Efficiency vs. Input Voltage 5 70 60 50 40 30 VIN=5V Vo=12V 20 0 0.5 1 1.5 2 2.5 3 Output current Io (A) 10 3.5 0 Fig. 5 Reference Voltage Fluctuation vs. Junction Temperature CIN=100µF, Co=470µF L=90µH, VIN=5V Vo=12V, Io=0.2A C=0.47µF, R=1kΩ 0.5 0 –0.5 500 CIN=100µF, Co=470µF L=90µH, VIN=5V Vo=12V, C=0.47µF R=1kΩ 0.4 0.3 0.2 0.1 0 –0.1 –0.2 –0.3 –0.4 –1 –25 –0.5 0 25 50 75 100 Junction temperature Tj (˚C) 1 CIN=100µF, Co=470µF L=90µH, Io=0.2A, C=0.47µF, R=1kΩ 0.5 Vo=12V Vo=24V 0 –0.5 0 5 10 15 Input voltage VIN (V) 0 125 Fig. 7 Line Regulation vs. Input Voltage Line regulation RegI (%) 0.5 20 0.1 0.2 0.3 0.4 0.5 0.6 0.7 Output current Io (A) Fig. 8 Oscillation Frequency Fluctuation vs. Junction Temperature Oscillation frequency fluctuation (%) Reference voltage fluctuation (mV) 1 100 200 300 400 Output current Io (mA) Fig. 6 Load Regulation vs. Output current Load regulation RegL (%) 0 10 5 0 –5 –10 –15 –25 CIN=100µF, Co=470µF L=90µH, VIN=5V Vo=12V, Io=0.2A C=1µF, R=1kΩ 0 25 50 75 100 Junction temperature Tj (˚C) 125 Chopper Regulators PQ2CF1 Fig. 9 Threshold Voltage vs. Junction Temperature Threshold voltage VTH(ON), VTHL (V) 1 0.9 0.8 VTHL 0.7 0.6 0.5 0.4 VTH(ON) 0.3 0.2 0.1 0 –25 0 25 50 75 100 125 150 Junction temperature Tj (˚C) ■ Step - Up Type Circuit Diagram (12V Output) CIN 100µF + 2 R2 8.56kΩ 1 + 5 4 1kΩ VIN 5V IO D 0.47µF 3 R1 1kΩ VO12V Load L 90µH CO 470µF ON/OFF control ■ Flyback Method Circuit Diagram IO D VO 2 + VIN 0.47µF 1kΩ R2 1 5 4 3 R1 1kΩ + CO 470µF Load CIN 100µF 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. SHARP takes no responsibility for any problems related to any intellectual property right of a third party resulting from the use of SHARP's devices. ● Contact SHARP in order to obtain the latest device specification sheets before using any SHARP device. SHARP reserves the right to make changes in the specifications, characteristics, data, materials, structure, and other contents described herein at any time without notice in order to improve design or reliability. Manufacturing locations are also subject to change without notice. ● Observe the following points when using any devices in this publication. SHARP takes no responsibility for damage caused by improper use of the devices which does not meet the conditions and absolute maximum ratings to be used specified in the relevant specification sheet nor meet the following conditions: (i) The devices in this publication are designed for use in general electronic equipment designs such as: - - - Personal computers - -- Office automation equipment - -- Telecommunication equipment [terminal] - - - Test and measurement equipment - - - Industrial control - -- Audio visual equipment - -- Consumer electronics (ii) Measures such as fail-safe function and redundant design should be taken to ensure reliability and safety when SHARP devices are used for or in connection with equipment that requires higher reliability such as: - -- Transportation control and safety equipment (i.e., aircraft, trains, automobiles, etc.) - - - Traffic signals - - - Gas leakage sensor breakers - - - Alarm equipment - -- Various safety devices, etc. (iii)SHARP devices shall not be used for or in connection with equipment that requires an extremely high level of reliability and safety such as: - - - Space applications - -- Telecommunication equipment [trunk lines] - -- Nuclear power control equipment - -- Medical and other life support equipment (e.g., scuba). ● Contact a SHARP representative in advance when intending to use SHARP devices for any "specific" applications other than those recommended by SHARP or when it is unclear which category mentioned above controls the intended use. ● If the SHARP devices listed in this publication fall within the scope of strategic products described in the Foreign Exchange and Foreign Trade Control Law of Japan, it is necessary to obtain approval to export such SHARP devices. ● This publication is the proprietary product of SHARP and is copyrighted, with all rights reserved. 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