PQ1CY1032Z PQ1CY1032Z TO-263 Surface Mount Type Chopper Regulator ■ Features ■ Outline Dimensions ±2 (2.4) (0.55) 8.4±0.5 1CY1032Z Epoxy resin +0.2 3−0.9−0.1 4−(1.7) (0.6) (1.3) (0.45) +0.2 1.05−0.1 (0.6) (0.45) +0.2 1.05−0.1 1 2 3 4 5 1 2 3 4 5 ❈( Parameter Input voltage Error input voltage Input-output voltage *2 Output to COM voltage *3 Vsoft terminal voltage Switching current *4 Power dissipation *5 Junction temperature Operating temperature Storage temperature *6 Soldering temperature (0.6) (0 to 0.25) 1. LCD monitors 2. Car navigation systems 3. Switching power supplies *1 3.5±0.5 3.28±0.5 (0.6) ■ Applications ■ Absolute Maximum Ratings (Unit : mm) 10.6MAX. 13.7MAX. 1. Maximum switching current:3.5A 2. Built-in ON/OFF control function 3. Built-in soft start function to suppress overshoot of output voltage in power on sequence or ON/OFF control sequence 4. Built-in oscillation circuit (Oscillation frequency:TYP. 150kHz) 5. Built-in overheat protection function 6. Built-in overcurrent shut-down function 7. TO-263 package 8. PQ1CY1032ZZ:Sleeve-packaged product PQ1CY1032ZP:Tape-packaged product 9. Variable output voltage (Output variable range:Vref to 35V/−Vref to −30V) [Possible to select step-down output/inversing output VIN VOUT COM (Common to heat sink) Oadj Vsoft ) : Typical dimensions (Ta=25°C) Symbol Rating VIN 40 VADJ 7 VI-O 41 VOUT −1 Vsoft −0.3 to +40 3.5 ISW 35 PD Tj 150 Topr −20 to +85 Tstg −40 to +150 Tsol 260 Unit V V V V V A W ˚C ˚C ˚C ˚C *1 Voltage between VIN terminal and COM terminal *2 Voltage between VOUT terminal and COM terminal *3 Voltage between VSOFT terminal and COM terminal *4 PD:With infinite heat sink *5 Over heat protection may operate at the condition Tj=125˚C to 150˚C *6 For 10s 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://www.sharp.co.jp/ecg/ PQ1CY1032Z (Unless otherwise specified, condition shall be VIN=12V, IO=0.5A, VO=5V, Vsoft terminal=0.1µF, Ta=25˚C) MIN. TYP. MAX. Unit Symbol Conditions ■ Electrical Characteristics Parameter Output saturation voltage Reference voltage Reference voltage temperature fluctuation Load regulation Line regulation Efficiency Oscillation frequency Oscillation frequency temperature fluctuation Overcurrent detection level Charge current Input threshold voltage ON threshold voltage Overcurrent shutdown threshold voltage Stand-by current Output OFF-state consumption current VSAT Vref ∆Vref |RegL| |RegI| η fO ∆fO IL ICHG VTHL VTHH VTH(ON) VTHIL ISD IQS ISW=3A − Tj=0 to 125˚C IO=0.5 to 3A VIN=8 to 35V IO=3A − Tj=0 to 125˚C − 2 , 4 terminals is open, 5 terminal Duty ratio=0%, 4 terminal=0V, 5 terminal Duty ratio=100%, 4 terminals is open, 5 terminal 4 terminal=0V, 5 terminal 5 terminal VIN=40V, 5 terminal=0V VIN=40V, 5 terminal=0.9V − 1.235 1.4 1.26 1.8 1.285 − − − − 135 − 3.6 − − − 0.7 3.8 − − ±0.5 0.2 1 80 150 ±2 4.2 −10 1.3 2.3 0.8 4.6 140 8 − 1.5 2.5 − 165 − 5.8 − − − 0.9 5.5 400 16 V V % % % % kHz % A µA V V V V µA mA Fig.1 Standard Test Circuit 4 1 ISD IQS L 45µH IO VO 2 PQ1CY1032Z A R2 5 + VIN + 3 CIN 220µF Load A D ICHG 5 terminal LOW HIGH OPEN VO output OFF ON ON CO 1 000µF R1 1kΩ L : HK-10S100-4500 (made by Toho Co.) D :ERC80-004 (made by Fuji electronics Co.) PQ1CY1032Z Fig.2 Internal Dissipation vs. Ambient Temperature Fig.3 Overcurrent Protection Characteristics (Typical Value) 6 40 PD : With infinite heat sink 5 30 Output voltage VO (V) Internal Dissipation PD (W) 35 25 20 15 4 Shutdown operating 3 2 10 Ta=25°C VIN=12V VO=5V 1 5 0 0 −20 0 25 50 0 75 85 0.5 1 1.5 Ambient temperature Ta (°C) Note) Oblique line prtion:Overheat protection may operate in this area Fig.4 Efficiency vs. Input Voltage 100 Tj=25°C 3.5 4 4.5 5 Tj=25°C 3.5 Switching current ISW (A) Efficiency η (%) 3 4 90 80 VO=5V, IO=1A VO=5V, IO=3A 70 2.5 Fig.5 Switching Current vs. Output Saturation Voltage VO=12V, IO=1A VO=12V, IO=3A 2 Output current IO (A) 3 2.5 2 1.5 1 60 0.5 0 50 0 5 10 15 20 25 30 35 0 40 0.5 0.75 1 1.25 Fig.6 Operating Consumption Current vs. Input Voltage 1.5 Reference voltage fluctuation ∆Vref (%) Tj=25°C VO=5V IO=3A 10 IO=1A 5 0 0 5 10 15 20 25 Input voltage VIN (V) 1.75 2 Fig.7 Reference Voltage Fluctuation vs. Junction Temperature 15 No load 1.5 Output saturation voltage VSAT (V) Input voltage VIN (V) Operating consumption current IQ' (mA) 0.25 30 35 40 VIN=12V VO=5V 1 0.5 0 −0.5 −1 −1.5 −25 0 25 50 75 Junction temperature Tj (°C) 100 125 PQ1CY1032Z Fig.8 Load Regulation vs. Output Current Fig.9 Line Regulation vs. Input Voltage 1.5 1.5 1 Line regulation RegI (%) Load regulation RegL (%) Tj=25˚C VIN=12V VO=5V 0.5 0 1 0.5 0 Tj=25°C VO=5V IO=0.5A −0.5 −0.5 0 0.5 1 1.5 2 2.5 0 3 5 10 Output current IO (A) Fig.10 Oscillation Frequency Fluctuation vs. Junction Temperature 2 0 −2 −4 0 25 50 75 100 125 VIN=12V VTHH 2 VTHL 1 VTH (ON) 0.5 0 40 4 2 0 −2 −4 −6 −8 −25 0 25 50 75 Junction temperature Tj (°C) 25 50 75 100 125 100 Fig.13 Overcurrent Shutdown Threshold Voltage vs. Junction Temperature Overcurrent shutdown threshold voltage VTHIL (V) Threshold voltage VTH (ON), VTHL, VTHH (V) 3 0 −25 35 Junction temperature Tj (°C) Fig.12 On Threshold Voltage vs. Junction Temperature 1.5 30 6 Junction temperature Tj (°C) 2.5 25 8 VIN=12V VO=5V 4 −6 −25 20 Fig.11 Overcurrent Detection Level Fluctuation vs. Junction Temperature Overcurrent detecting level Fluctuation ∆IL (%) Oscillation frequency fluctuation ∆fO (%) 6 15 Input voltage VIN (V) 125 6 VIN=12V 5.5 5 4.5 4 3.5 3 −25 0 25 50 75 Junction temperature Tj (°C) 100 125 PQ1CY1032Z Fig.14 Power Dissipation vs. Ambient Temperature (Typical Value) 3 Power dissipation PD (W) Cu area 3 600mm2 2 Cu area 900mm2 PWB Cu area 400mm2 1 0 −20 Cu area 115mm PWB Cu 2 Material : Glass-cloth epoxy resin Size : 60×60×1.6mm Cu thickness : 65µm 0 25 50 75 85 Ambient temperature Ta (°C) Fig.15 Block Diagram VIN 1 Voltage regulator F/F Q 5 Vsoft 4 OADJ Soft start circuit ERROR AMP. _ + R S Vref Oseillation circuit Overheat detection circuit Vout ON/OFF circuit _ PWM COMP. + Overcurrent detection circuit 2 _ + VS' 3 COM Fig.16 Step Down Type Circuit Diagram 4 L 45µH 1 VO 5V 2 PQ1CY1032Z 5 + VIN 8 to 35V + RS 3 CIN 220µF R2 3kΩ CS Load D CO 1 000µF R1 1kΩ ON/OFF control signal RS≤50kΩ PQ1CY1032Z Fig.17 Polarity Inversion Type Circuit Diagram L 65µH 4 1 2 PQ1CY1032Z R2 3kΩ 5 + CIN 220µF 5 to 30V + RS 3 VIN Load CO 2 200µF D CS R1 1kΩ VO −5V ON/OFF control signal ■ Precautions for Use 4 1 L VO 2 PQ1CY1032Z 5 VIN + 3 CS R2 + Load D CO CIN R1 1. External connection (1) Wiring condition is very important. Noise associated with wiring inductance may cause problems. For minimizing inductance, it is recommended to design the thick and short pattern (between large current diodos, input/output capacitors, and terminal 1,2.) Single-point grounding (as indicated) should be used for best results. (2) High switching speed and low forward voltage type schottky barrier diode should be recommended for the catch-diode D because it affects the efficiency. Please select the diode which the current rating is at least 1.2 times greater than maximum swiching current. (3) The output ripple voltage is highly influenced by ESR (Equivalent Series Resistor) of output capacitor, and can be minimized by selecting Low ESR capacitor. (4) An inductor should not be operated beyond its maximum rated current so that it may not saturate. (5) When voltage that is higher than VIN 1 , is applied to VOUT 2 , there is the case that the device is broken. Especially, in case VIN 1 is shorted to GND in normal condition, there is the case that the device is broken since the charged electric charge in output capacitor (CO) flows into input side. In such case a schottly barrier diode or a silicon diode shall be recommended to connect as the following circuit. 1 PQ1CY1032Z 2 PQ1CY1032Z ■ Thermal Protection Design Internal power dissipation(P)of device is generally obtained by the following equation. P=ISW(Average.) × VSAT × D' + VIN(voltage between VIN to COM terminal) × IQ '(consumption current) Step down type –––––––––––––– Ton VO+VF ––––––––––––– D'(Duty)= –––––––– T(period)= VIN–VSAT+VF ISW(Average)= IO(Output current.) Polarity inversion type –––––––––––––––––––– |VO|+VF Ton D'(Duty)= –––––––– = –––––––––––––––––––– T(period) VIN+|VO|–VSAT+VF 1 ISW(Average)= –––––––– × IO(Output current.) 1–D' VF : Forward voltage of the diode When ambient temperature Ta and power dissipation PD(MAX)during operation are determined, use Cu plate which allows the element to operate within the safety operation area specified by the derating curve. Insufficient radiation gives an unfavorable influence to the normal operation and reliability of the device. ■ ON/OFF Control Terminal 1. In the following circuit,when Vsoft terminal 5 becomes low (loss than VTHON) by switching transistor Tr on, output voltage may be turned OFF and the device becomes stand-by mode. Dissipation current at stand-by mode becomes Max.400µA. When transistor Tr becomes OFF, output voltage can be ON. External resistor Rs should be leaded to avold discharge current of CS, and not to break the transistor Tr. 2. Soft startup When capacitor CS is loaded, output pulse gradually expanded and output voltage will start softly. 3. Over current protection When the voltage of Vsoft 5 is more than VTHIL, over current shut down function will operate. And when the voltage of Vsoft 5 is less than VTHIL, over current protection function will operate. Since the PQ1CY1032Z must use an capacitor CS, Vsoft 5 should be more than VTHIL, over current shut down function will operate. 4 1 IO L 2 VO PQ1CY1032Z 5 R2 + VIN + CIN Load RS 3 D CS Tr ON/OFF control signal CO R1 PQ1CY1032Z ■ ON-OFF Terminal Voltage vs. Time (V) Vsoft Terminal voltage 4.6 (VTHIL) 1 2 2.3 (VTHH) 3 Duty ratio=100% 4 5 1.3 (VTHL) Duty ratio=0% 4 0.8 (VTH (ON)) 0 1 2 3 Time 5 Stand by mode OFF state Soft start Non over current shut down Over current shut down Application Circuits 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. Under the copyright laws, no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, for any purpose, in whole or in part, without the express written permission of SHARP. Express written permission is also required before any use of this publication may be made by a third party. ●Contact and consult with a SHARP representative if there are any questions about the contents of this publication. 115