Chopper Regulators PQ1CZ38M2Z PQ1CZ38M2Z Chopper Regulator built-in 300kHz oscillation circuit ■ ■ Features Maximum switching current: 0.8A ● Built-in ON/OFF control function ● Built-in soft start function to suppress overshoot of output voltage in power on sequence or ON/OFF control sequence ● Built-in oscillation circuit (Oscillation frequency: TYP. 300kHz) ● Built-in overheat, overcurrent protection functions ● SC-63 package ● Variable output voltage (Output variable range: VREF to 35V/-VREF to -30V) [Possible to select step-down output/inversing output according to external connection circuit] (Unit : mm) Outline Dimensions ● ( ) : Typical dimensions 2.3 ±0.5 6.6 MAX. 5.2 ±0.5 (0.5) 3 5.5 ±0.5 (1.7) MIN. 0.5 +0.2 - 0.1 (0.5) 4(1.27) ■ Applications 1 Color TV ● Digital OA equipment ● Facsimiles, printers and other OA equipment ● Personal computers and amusement equipment ● ■ ❇1 ❇2 ❇3 ❇4 ❇5 Absolute Maximum Ratings Symbol Parameter VIN Input voltage Vadj Error input voltage VI–O Input-output voltage ISW Switching current VOUT Output-COM voltage VC ON/OFF control voltage PD Power dissipation Tj Junction temperature Topr Operating temperature Tstg Storage temperature Tsol Soldering temperature 1 3 4 5 2 3 4 5 (Ta=25°C) Rating Unit 40 7 41 0.8 –1 –0.3 to 40 8 150 –20 to +80 –40 to +150 260 (10s) 2 (0.9) (0 to 0.25) 2.5 9.7 MAX. Epoxy resin 1CZ38M VIN VOUT GND (Common to heat sink) Oadj ON/OFF control •Please refer to the chapter " Handling Precautions ". V V V A V V W ˚C ˚C ˚C ˚C ❇1 Voltage between VIN terminal and COM terminal ❇2 Voltage between VOUT terminal and COM terminal ❇3 Voltage between ON/OFF control and COM terminal ❇4 In case of with infinite heat sink,please refer fig.2. ❇5 Overheat protection may operate at Tj=125˚C to 150˚C 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 ■ PQ1CZ38M2Z Electrical Characteristics (Unless otherwise specified, condition shall be VIN=12V, IO=0.2A, VO=5V, ON-OFF terminals is open, Ta=25˚C) Parameter Symbol Output saturation voltage Reference voltage Reference voltage temperature fluctuation Load regulation Line regulation Efficiency Oscillation frequency Conditions MIN. ISW=0.5A − 1.235 − Tj=0 to 125˚C − IO=0.1 to 0.5A − VIN=8 to 35V − IO=0.5A − − 270 Tj=0 to 125˚C − − 0.85 2 , 4 terminals is open, 5 terminal − Duty ratio=0%, 4 terminal=0V, 5 terminal − Duty ratio=100%, 4 terminal=1.1V, 5 terminal − 4 terminal=0V, 5 terminal 0.7 VIN=40V, 5 terminal=0V − VIN=40V, 4 terminal=0V, 5 terminal=0.9V − VSAT Vref ∆Vref |RegL| |RegI| η fO Oscillation frequency temperature fluctuation Overcurrent detecting level Charge current Input threshold voltage ON threshold voltage Stand-by current Output OFF-state dissipation current ∆fO IL ICHG VTHL VTHH VTH(ON) ISD IQS TYP. MAX. 0.9 1.26 1.5 1.285 ±0.5 0.2 1 80 300 ±3 1.2 −10 1.3 2.1 0.8 120 5 − 1.5 2.5 − 330 − 1.6 − − − 0.9 400 10 Unit V V % % % % kHz % A µA V V V µA mA Fig.1 Test Circuit 4 1 ISD IQS L 65µH IO VO 2 PQ1CZ38M2Z A R2 5 + + 3 VIN CIN 100µF Load A ICHG D R1 1kΩ CO 470µF L : HK-12S120-9000 (made by Toho Co.) D :ERC80-004 (made by Fuji electronics Co.) Fig.2 Power Dissipation vs. Ambient Temperature 6 10 PD : With infinite heat sink PD Output voltage VO (V) Power dissipation PD (W) Fig.3 Overcurrent Protection Characteristics (Typical Value) 5 Tj=25˚C VIN=12V VO=5V 5 4 3 2 1 0 –20 0 0 20 40 60 80 100 Ambient temperature Ta (°C) Note) Oblique line portion:Overheat protection may operate in this area 0 0.5 1 1.5 Output current IO (A) 2 Chopper Regulators PQ1CZ38M2Z Fig.4 Efficiency vs. Input Voltage Fig.5 Output Saturation Voltage vs. Switching Current 100 1.6 Tj=25˚C Efficiency η (%) 90 VO=12V,IO=0.1A 80 70 VO=5V,IO=0.5A 60 VO=5V,IO=0.1A Tj=25˚C Output saturation voltage VSAT (V) VO=12V,IO=0.5A 1.4 1.2 1 0.8 0.6 0.4 0.2 50 0 0 10 20 30 40 Input voltage VIN (V) 50 Fig.6 Stand-by Current vs. Intput Voltage 0 2 200 150 100 50 Reference voltage fluctuation (%) Tj=25˚C Stand−by current ISD (µA) 1 Fig.7 Reference Voltage Fluctuation vs. Junction Temperature 250 0 5 10 15 20 25 30 Intput voltage VIN (V) 1 0.5 0 –0.5 –1 –1.5 –2 –25 35 40 Fig.8 Load Regulation vs. Output Current VIN=12V VO=5V 1.5 0 25 50 75 100 0 Junction temperature Tj (°C) 125 Fig.9 Line Regulation vs. Input Voltage 1.5 Tj=25˚C VIN=12V VO=5V 0.5 0 –0.5 Line regulation RegI (%) 1 Load regulation RegL(%) 0.2 0.4 0.6 0.8 Switching current ISW (A) Tj=25˚C VO=5V IO=0.2A 1 0.5 0 –0.5 0 0.1 0.2 0.3 0.4 0.5 Output current IO (A) 0.6 0 10 20 30 Input voltage VIN (V) 40 Chopper Regulators PQ1CZ38M2Z 10 VIN=12V VO=5V 8 6 4 2 0 –2 –4 –6 –8 –10 –25 0 25 50 75 100 Junction temperature Tj (°C) 125 3 VTH(H) 2 VTH(L) 1 0.5 VTH(ON) 0 –25 4 2 0 –2 –4 –6 –8 –25 0 25 50 75 100 Junction temperature Tj (°C) Tj=25˚C VO=5V 10 8 IO=0.5A 6 IO=0.1A 4 2 0 0 25 50 75 100 Junction temperature Tj (˚C) 125 0 10 20 30 Input voltage VIN (V) Fig.14 Block Diagram VIN 2 VOUT 5 ON/OFF control 4 Oadj ON/OFF circuit Voltage regulator PWM COMP. + Overcurrent detection circuit Q R S F/F Soft start _ Oscillator 1 125 12 VIN=12V 1.5 6 Fig.13 Operating Dissipation Current vs. Input Voltage Operating dissipation current IQ' (mA) Threshold voltage VTH (ON) ,VTH (L),VTH (H) (V) Fig.12 Threshold Voltage vs. Junction Temperature 2.5 Fig.11 Overcurrent Detecting Level Fluctuation vs. Junction Temperature Overcurrent detecting level fluctuation (%) Oscillation frequency fluctuation (%) Fig.10 Oscillation Frequency Fluctuation vs. Junction Temperature _ ERROR AMP. + Vref Overheat detection circuit 3 COM 40 Chopper Regulators PQ1CZ38M2Z Fig.15 Step Down Type Circuit Diagram 4 1 L 65µH VO 5V 2 PQ1CZ38M2 5 R2 3kΩ + VIN 8 to 35V 3 CS CIN 100µF RS + Load D CO 470µF R1 1kΩ RS≤50kΩ ON/OFF control signal Fig.16 Polarity Inversion Type Circuit Diagram 4 1 L 65µH 2 PQ1CZ38M2 R2 3kΩ 5 + VIN 5 to 30V 3 CIN 100µF CS RS + Load D CO 2 200µF R1 1kΩ VO −5V ON/OFF control signal RS≤50kΩ 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). ● If the SHARP devices listed in this publication fall within the scope of strategic products described in the Foreign Exchange and Foreign Trade 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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