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| Low Power-Loss Voltage Regulators PQ7DV5 PQ7DV5 Variable Output Type, High Output Current(5A)Type Low Power-loss Voltage Regulators s q Features s Outline Dimensions 17.0MAX (Unit : mm) 50.2 TO-3P package q Low power-loss(Dropout voltage: MAX. 0.5V at Io=5A) q Variable output type(1.5V to 7V) q Minimum input voltage: 3.0V q High output current type(5A) q Reference voltage precision: 2.0% q Built-in ON/OFF control function q Built-in overcurrent protection, overheat protection function 4.50.2 2.00.2 PQ7DV5 190.5 39.0MAX (1.4) s q Applications 4-(2.54) (0.6) 5-0.80.2 Power supplies for various electronic equipment such as personal computers Internal connection diagram 17.0MIN 3.7MAX controller Reference comparator voltage DC input(VIN) DC output(VO) GND ON/OFF control terminal(VC) Output voltage minute adjustment termina(VADJ) s 1 1 1 Absolute Maximum Ratings Parameter Input voltage ON/OFF control terminal voltage Output adjustment terminal voltage Output current Power dissipation(No heat sink) Power dissipation(With infinite heat sink) Junction temperature Operating temperature Storage temperature Soldering temperature (Ta=25C) 2 Symbol VIN VC VADJ IO PD1 PD2 Tj Topr Tstg Tsol Rating 10 10 5 5.0 2.2 60 150 -20 to +80 -40 to +150 260(For 10s) Unit V V V A W W C C C C 1 2 All are open except GND and applicable terminals. Overheat protection may operate at 125<=Tj<=50C. *Please refer to the chapter " Handling Precautions ". 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/ Notice Low Power-Loss Voltage Regulators PQ7DV5 s Electrical Characteristics (Unless otherwise specified, conditions shall be VIN=5V, IO=2.5A, VO=3V[R1=2k]Ta=25C) Parameter Input voltage Output voltage Reference voltage Load regulation Line regulation Temperature coefficient of reference voltage Ripple rejection Dropout voltage 3 ON-state voltage for control ON-state current for control OFF-state voltage for control OFF-state current for control Quiescent current 3 Symbol VIN VO Vref RegL RegI TCVO RR Vi-o VC(ON) IC(ON) VC(OFF) IC(OFF) Iq Conditions - - - IO=5mA to 5.0A VIN=4 to 10V Tj=0 to 125C Refer to Fig. 2 VIN=3V, IO=5A - VC=2.7V - VC=0.4V Io=0A NIN. 3 1.5 1.225 - - - 45 - 2.0 - - - - TYP. - - 1.25 0.5 0.5 0.01 55 - - - - - - MAX. 10 7 1.275 2.0 2.5 - - 0.5 - 20 0.8 -0.4 17 Unit V V V % % %/C dB V V A V mA mA In case of opening control terminal , output voltage turns on. Fig. 1 Test Circuit VIN 0.33F 1 2 47F R2 Vref R1 V VO A + IO VC 4 3 5 V RL Vo=Vref(1+R2/R1) [R1=2k,Vref Nearly=1.25V] A A Iq 2k Fig. 2 Test Circuit for Ripple Rejection 0.33F 1 2 47F R2 + ei VIN IO + 4 3 5 Vref V RL VC 2.7V R1 2k f=120Hz(sine wave) ei(rms)=0.5V VIN=5V VO=3V(R1=2k) IO=0.5A RR=20 log(ei(rms)/eo(rms)) Fig. 3 Power Dissipation vs. Ambient Temperature 60 50 40 30 20 10 PD1 0 -20 Note) Fig. 4 Overcurrent Protection Characteristics(Typical Value) 100 80 60 40 20 0 PD2 PD1 :No heat sink PD2 :With infinite heat sink Relative output voltage (%) Power dissipation PD (W) 0 20 40 60 80 Ambient temperature Ta (C) Oblique line portion : Overheat protection may operate in this area. 0 2.0 4.0 6.0 8.0 10 Output current IO (A) 12 Low Power-Loss Voltage Regulators Fig. 5 Reference Voltage Deviation vs. Junction Temperature Reference voltage deviation Vref (mV) 10 VIN=5V 8 VO=3V(R1=2k,R2=2.8k) 6 IO=2.5A 4 2 0 -2 -4 -6 -8 -10 -25 0 25 50 75 100 Junction temperature Tj (C) 125 PQ7DV5 Fig. 6 Output Voltage vs. Input Voltage 4 Tj =25C VO=3V(R1=2k,R2=2.8k) RL=1.2 RL= RL=0.6 Output voltage VO (V) 3 2 1 0 0 1 2 3 4 Input voltage VIN (V) 5 Fig. 7 Circuit Operating Current vs. Input Voltage Circuit operating current IBIAS (mA) Tj =25C VO=3V (R1=2k, R2=2.8k) RL=0.6 Fig. 8 Dropout Voltage vs. Junction Temperature 0.5 0.4 0.3 0.2 0.1 0 -25 VIN :0.95VO VO=3V(R1=2k,R2=2.8k) IO=5A 100 RL=1.2 RL= 0 0 1 2 3 4 Input voltage VIN (V) 5 Dropout voltage Vi-O (V) 0 25 50 75 100 Junction temperature Tj (C) 125 Fig. 9 Quiescent Current vs. Junction Temperature 20 VIN =5V 18 VO=3V(R1=2k,R2=2.8k) 16 IO =0A 14 12 10 8 6 4 2 0 -25 0 25 50 75 100 Junction temperature Tj (C) 125 Fig.10 Ripple Rejection vs. Input Ripple Frequency 100 80 60 40 VIN=5V 20 VO=3V(R1=2k,R2=2.8k) Io=0.5A, ei(rms)=0.5V, Tj =25C 0 0.1 1 10 Input ripple frequency f (kHz) Quiescent current Iq (mA) Ripple rejection RR (dB) 100 Low Power-Loss Voltage Regulators Fig.11 Ripple Rejection vs. Junction Temperature 100 80 60 40 20 VIN=5V VO=3V(R1=2k,R2=2.8k) IO =0.5A,ei(rms)=0.5V f=120Hz 0 25 50 75 100 Junction temperature Tj (C) 125 PQ7DV5 Ripple rejection RR (dB) 0 -25 s Standard Connection D1 VIN 1 2 R2 4 5 3 R1 + VO + Cref 2k CIN CO ON/OFF signal High or Open : Output ON Low : Output OFF : This device is necessary to protect the element from damage when reverse voltage may be applied to the regulator in case of input short-circuiting. Cref : This device is necessary when it is required to enhance the ripple rejection or to delay the output start-up time*. Otherwise, it is not necessary. (Care must be taken since Cref may raise the gain, facilitating oscillation.) *The output start-up time proportional to CrefR2. CIN, CO : Be sure to mount the devices CIN and CO as close to the device terminal as possible so as to prevent oscillation. The standard specification of CIN= 0.33 ,CO= 47, respectively. However, adjust them as necessary after checking. R1, R2 : These devices are necessary to set the output voltage. The output voltage VO is given by the following formula: VO=Vref(1+R2/R1) (Vref is 1.25V TYP) The standard value of R1 is 2. But value up to 10k. D1 Load NOTICE q 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). q q q 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. q q q |
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