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| PQ1CY1032Z PQ1CY1032Z s Features 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 TO-263 Surface Mount Type Chopper Regulator s Outline Dimensions 10.6MAX. (0.55) 3.280.5 3.50.5 (0.6) 2 (2.4) (0 to 0.25) (0.6) (0.45) +0.2 1.05-0.1 +0.2 3-0.9-0.1 (Unit : mm) 13.7MAX. 8.40.5 1CY1032Z Epoxy resin (0.6) (0.45) +0.2 1.05-0.1 4-(1.7) (0.6) 12345 s Applications 1. LCD monitors 2. Car navigation systems 3. Switching power supplies ( 1 2 3 4 5 VIN VOUT COM (Common to heat sink) Oadj Vsoft ) : Typical dimensions s Absolute Maximum Ratings 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 *1 (Ta=25C) Unit V V V V V A W C C C 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 *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=125C to 150C *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/ (1.3) PQ1CY1032Z s Electrical Characteristics Parameter (Unless otherwise specified, condition shall be VIN=12V, IO=0.5A, VO=5V, Vsoft terminal=0.1F, Ta=25C) MIN. TYP. MAX. Unit Symbol Conditions VSAT Output saturation voltage Reference voltage Reference voltage temperature fluctuation Load regulation Line regulation Efficiency Oscillation frequency ISW=3A - Tj=0 to 125C IO=0.5 to 3A VIN=8 to 35V IO=3A - Tj=0 to 125C Oscillation frequency temperature fluctuation fO - Overcurrent detection level IL 2 , 4 terminals is open, 5 terminal ICHG Charge current VTHL Duty ratio=0%, 4 terminal=0V, 5 terminal Input threshold voltage VTHH Duty ratio=100%, 4 terminals is open, 5 terminal 4 terminal=0V, 5 terminal ON threshold voltage VTH(ON) 5 terminal Overcurrent shutdown threshold voltage VTHIL VIN=40V, 5 terminal=0V ISD Stand-by current VIN=40V, 5 terminal=0.9V Output OFF-state consumption current IQS Vref Vref |RegL| |RegI| fO - 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 A V V V V A mA Fig.1 Standard Test Circuit 4 1 ISD IQS PQ1CY1032Z 5 + VIN 3 CIN 220F A ICHG D R1 1k CO 1 000F R2 + Load 2 L 45H IO VO A 5 terminal LOW HIGH OPEN VO output OFF ON ON L : HK-10S100-4500 (made by Toho Co.) D :ERC80-004 (made by Fuji electronics Co.) PQ1CY1032Z Fig.2 Internal Dissipation vs. Ambient Temperature 40 35 Internal Dissipation PD (W) 30 25 20 15 10 5 0 -20 0 25 50 75 85 1 0 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 Ambient temperature Ta (C) Note) Oblique line prtion:Overheat protection may operate in this area Fig.3 Overcurrent Protection Characteristics (Typical Value) 6 PD : With infinite heat sink 5 Output voltage VO (V) 4 Shutdown operating 3 2 Ta=25C VIN=12V VO=5V Output current IO (A) Fig.4 Efficiency vs. Input Voltage 100 Tj=25C 90 Efficiency (%) VO=12V, IO=3A VO=12V, IO=1A Fig.5 Switching Current vs. Output Saturation Voltage 4 3.5 Switching current ISW (A) 3 2.5 2 1.5 1 0.5 Tj=25C 80 VO=5V, IO=1A 70 VO=5V, IO=3A 60 50 0 5 10 15 20 25 30 35 40 Input voltage VIN (V) 0 0 0.25 0.5 0.75 1 1.25 1.5 1.75 2 Output saturation voltage VSAT (V) Fig.6 Operating Consumption Current vs. Input Voltage 15 Operating consumption current IQ' (mA) Tj=25C VO=5V Fig.7 Reference Voltage Fluctuation vs. Junction Temperature 1.5 Reference voltage fluctuation Vref (%) VIN=12V VO=5V IO=3A 10 1 0.5 No load 5 IO=1A 0 -0.5 -1 -1.5 -25 0 0 5 10 15 20 25 30 35 40 Input voltage VIN (V) 0 25 50 75 100 125 Junction temperature Tj (C) PQ1CY1032Z Fig.8 Load Regulation vs. Output Current 1.5 Tj=25C VIN=12V VO=5V Load regulation RegL (%) Line regulation RegI (%) 1 Fig.9 Line Regulation vs. Input Voltage 1.5 1 0.5 0.5 0 0 Tj=25C VO=5V IO=0.5A 0 5 10 15 20 25 30 35 40 -0.5 0 0.5 1 1.5 2 2.5 3 Output current IO (A) -0.5 Input voltage VIN (V) Fig.10 Oscillation Frequency Fluctuation vs. Junction Temperature 6 Oscillation frequency fluctuation fO (%) VIN=12V VO=5V Fig.11 Overcurrent Detection Level Fluctuation vs. Junction Temperature 8 Overcurrent detecting level Fluctuation IL (%) 6 4 2 0 -2 -4 -6 -8 -25 0 25 50 75 100 125 4 2 0 -2 -4 -6 -25 0 25 50 75 100 125 Junction temperature Tj (C) Junction temperature Tj (C) Fig.12 On Threshold Voltage vs. Junction Temperature 3 Threshold voltage VTH (ON), VTHL, VTHH (V) Fig.13 Overcurrent Shutdown Threshold Voltage vs. Junction Temperature Overcurrent shutdown threshold voltage VTHIL (V) 6 VIN=12V 5.5 5 4.5 4 3.5 3 -25 2.5 VTHH VIN=12V 2 VTHL 1.5 1 VTH (ON) 0.5 0 -25 0 25 50 75 100 125 0 25 50 75 100 125 Junction temperature Tj (C) Junction temperature Tj (C) PQ1CY1032Z Fig.14 Power Dissipation vs. Ambient Temperature (Typical Value) 3 Cu area 3 600mm2 Power dissipation PD (W) 2 Cu area 900mm2 PWB Cu area 400mm2 1 Cu area 115mm 2 PWB Cu 0 -20 Material : Glass-cloth epoxy resin Size : 60x60x1.6mm Cu thickness : 65m 0 25 50 75 85 Ambient temperature Ta (C) Fig.15 Block Diagram VIN 1 2 Vout Voltage regulator ON/OFF circuit 5 _ PWM COMP. + F/F Overcurrent detection circuit Q R S Vsoft Soft start circuit ERROR AMP. _ + 4 OADJ Overheat detection circuit Oseillation circuit _ + 3 Vref VS' COM Fig.16 Step Down Type Circuit Diagram 4 1 PQ1CY1032Z 5 + VIN 8 to 35V 3 CIN 220F CS RS D 2 L 45H VO 5V R2 3k + Load CO 1 000F R1 1k ON/OFF control signal RS50k PQ1CY1032Z Fig.17 Polarity Inversion Type Circuit Diagram 4 1 PQ1CY1032Z 5 + VIN 5 to 30V 3 CIN 220F CS RS D R1 1k VO -5V CO 2 200F R2 3k + Load 2 L 65H ON/OFF control signal s Precautions for Use 4 1 PQ1CY1032Z 5 VIN + CIN + D CO R1 R2 2 L VO 3 CS Load 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 s Thermal Protection Design Internal power dissipation(P)of device is generally obtained by the following equation. P=ISW(Average.) x VSAT x D' + VIN(voltage between VIN to COM terminal) x 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)= -------- x 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. s 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.400A. 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 PQ1CY1032Z 5 + VIN 3 CIN CS Tr RS D R1 CO R2 2 L IO VO + Load ON/OFF control signal PQ1CY1032Z s ON-OFF Terminal Voltage vs. Time (V) 4.6 (VTHIL) Vsoft Terminal voltage 1 2 3 2.3 (VTHH) Duty ratio=100% 4 5 Stand by mode OFF state Soft start Non over current shut down Over current shut down 1.3 (VTHL) Duty ratio=0% 0.8 (VTH (ON)) 0 1 2 3 4 5 Time Application Circuits NOTICE qThe 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. qContact 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. qObserve 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). qContact 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. qIf 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. qThis 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. qContact and consult with a SHARP representative if there are any questions about the contents of this publication. 115 |
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