PQ30RV1/PQ30RV11/PQ30RV2/PQ30RV21

Transcription

1 Low Power-Loss oltage Regulators PQ/PQ1/PQ/PQ1 PQ/PQ1/PQ/PQ1 ariable Output Low Power-Loss oltage Regulators Features Compact resin full-mold package Low power-loss (Dropout voltage: MAX..) ariable output voltage(setting range: 1. to ) Built-in output ON/OFF control function Applications Power supply for print concentration control of electronic typewriters with display Series power supply for motor drives Series power supply for CRs and Ts Outline Dimensions 29.1MAX 7.±.2 1.MIN 1.2MAX PQ.6±.2 ø.2± (2.) (Unit : mm).±.2 2.8±.2 (.).8MAX 1.6±. (1.) Model Line-ups Output voltage 1A output 2A output ➀➁➂➃ Reference voltage precision:±% Reference voltage precision:±2% PQ PQ1 PQ PQ1 Internal connection diagram ➀ ➁ Specific IC ➃ ➂ ➀ ➁ ➂ ➃ DC input(in) DC output(o) GND Output voltage minute adjustment terminal(adj) Equivalent Circuit Diagram Reference voltage generation circuit ASO protection circuit Overheat protection circuit ASO : Area of Safety Operation 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

2 Low Power-Loss oltage Regulators PQ/PQ1/PQ/PQ1 Absolute Maximum Ratings Parameter Symbol Rating Unit 1 1 Input voltage Output voltage adjustment voltage IN ADJ 7 Output current PQ/PQ1 1 IO PQ/PQ1 2 A Power dissipation(no heat sink) PD1 1. W Power dissipation PQ/PQ1 1 PD2 (With infinite heat sink) PQ/PQ1 18 W 2 Junction temperature Operating temperature Storage temperature Soldering temperature Tj Topr Tstg Tsol 1 2 to 8 to 1 26(For 1s) C C C C 1 All are open except GND and applicable terminals. 2 Overheat protection may operate at Tj>=12 C. (Ta=2 C) Electrical Characteristics Unless otherwise specified, condition shall be IN=1, O=1, IO=.A, =9Ω(PQ/PQ1) IN=1, O=1, IO=1.A, =9Ω(PQ/PQ1) Parameter Symbol Conditions Input voltage IN Output voltage Load regulation PQ/PQ =9Ω to 8.kΩ O PQ1/PQ1 =8Ω to 8.7kΩ PQ/PQ1 IO=mA to 1A RegL PQ/PQ1 IO=mA to 2A Line regulation Ripple rejection RegI RR IN=11 to 28 Cref= Cref=.µF Refer to Fig. 2 Reference voltage PQ/PQ PQ1/PQ1 ref Temperature coefficient of reference voltage Tcref Tj= to 12 C Dropout voltage PQ/PQ1, IO=.A i-o PQ/PQ1, IO=2A Quiescent current Iq IO= MIN TYP ±1. MAX (Ta=2 C) Unit % % db % ma Input voltage shall be the value when output voltage is 9% in comparison with the initial value. Fig. 1 Test Circuit IN 7µF O.µF A Iq 9Ω ref A RL IO O=ref 1 [=9Ω,ref Nearly=1.2] Fig. 2 Test Circuit of Ripple Rejection 7µF ei IN.µF 9Ω Cref.µF IO RL eo IO=.A f=12hz(sine wave) ei(rms)=. RR=2 log(ei(rms)/eo(rms))

3 Low Power-Loss oltage Regulators Fig. Power Dissipation vs. Ambient Temperature (PQ/PQ1) Power dissipation PD (W) PD1 :No heat sink PD2 :With infinite heat sink PD2 PD Ambient temperature Ta ( C) Note) Oblique line portion : Overheat protection may operate in this area. Fig. Overcurrent Protection Characteristics (PQ/PQ1) 1 PQ/PQ1/PQ/PQ1 Fig. Power Dissipation vs. Ambient Temperature (PQ/PQ1) PD1 :No heat sink PD2 :With infinite heat sink 2 Power dissipation PD (W) 1 1 PD2 PD Ambient temperature Ta ( C) Note) Oblique line portion : Overheat protection may operate in this area. Fig. 6 Overcurrent Protection Characteristics (PQ/PQ1) 1 Relative output voltage (%) Relative output voltage (%) Output current IO (A) Fig. 7 Output oltage Adjustment Characteristics Output voltage O () (Ω) 9Ω Output current IO (A) Fig. 8 Reference oltage Deviation vs. Junction Temperature 1 Reference voltage deviation ref (m) =9Ω,=2.7kΩ,IN=1 IO=.A(PQ/PQ1) 1 IO= 1A(PQ/PQ1)

4 Low Power-Loss oltage Regulators Fig. 9 Output oltage vs. Input oltage (PQ/PQ1) 1 =9Ω,=2.7kΩ,Tj=2 C PQ/PQ1/PQ/PQ1 Fig.1 Output oltage vs. Input oltage (PQ/PQ1) 1 =9Ω,=2.7kΩ,Tj=2 C Output voltage O () 1 RL= RL=1Ω Output voltage O () 1 RL= RL=Ω 1 Input voltage IN () Fig.11 Dropout oltage vs. Junction Temperature (PQ/PQ1). =9Ω,=2.7kΩ IN:input voltage shall be the. value when output voltage is 9% in comparison with the initial value Io=1A. Dropout voltage i O ().2.1.7A.A.2A Fig.1 Quiescent Current vs. Junction Temperature IN= IO= Quiescent current Iq (ma) Input voltage IN () Fig.12 Dropout oltage vs. Junction Temperature (PQ/PQ1). =9Ω,=2.7kΩ IN:input voltage shall be the. value when output voltage is 9% in comparison with the initial value Dropout voltage i O ()..2.1 IO=2A 1.A 1A.A Fig.1 Ripple Rejection vs. Input Ripple Frequency (PQ/PQ1) 8 Ripple rejection RR (db) No Cref Tj=2 C =9Ω,=2.7kΩ IO=.A,ei(rms)=., IN=1 Cref=.µF Input ripple frequency f (khz)

5 Low Power-Loss oltage Regulators Fig.1 Ripple Rejection vs. Input Ripple Frequency (PQ/PQ1) 8 Ripple rejection RR (db) Fig.17 Ripple Rejection vs. Output Current (PQ/PQ1) 8 Ripple rejection RR (db) Fig.19 Output Peak Current vs. Dropout oltage (PQ/PQ1) Output peak current IOP (A) Tj=2 C =9Ω,=2.7kΩ IN=1,ei(rms)=.,f=12Hz Output current IO (A) No Cref Tj=2 C =9Ω,=2.7kΩ IO=.A,ei(rms)=., IN= Input ripple frequency f (khz) Tj=2 C =9Ω,=2.7kΩ Cref=.µF No Cref Cref=.µF 1 1 Dropout voltage i O () PQ/PQ1/PQ/PQ1 Fig.16 Ripple Rejection vs. Output Current (PQ/PQ1) 8 Ripple rejection RR (db) Fig.18 Output Peak Current vs. Dropout oltage (PQ/PQ1) 2. Output peak current IOP (A) 1. Tj=2 C 1. =9Ω,=2.7kΩ 1 1 Dropout voltage i O () Fig.2 Output Peak Current vs. Junction Temperature (PQ/PQ1) 2. Output peak current IOP (A) 7 6 Tj=2 C =9Ω,=2.7kΩ IN=1,ei(rms)=.,f=12Hz Output current IO (A) Cref=.µF No Cref IN O= 2. IOP:Output current when output voltage is 9% in comparison with the initial value =9Ω,=2.7kΩ

6 Low Power-Loss oltage Regulators PQ/PQ1/PQ/PQ1 Fig.21 Output Peak Current vs. Junction Temperature (PQ/PQ1) Output peak current IOP (A) IN O= 2. IOP:Output current when output voltage is 9% in comparison with the initial value =9Ω,=2.7kΩ Standard Connection D1 IN CIN Cref 9Ω to 1kΩ CO Load O D1 Cref CIN, CO : 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. : This device is necessary when it is required to enhance the ripple rejection or to delay the output start-up time( 1). ( 1)Otherwise, it is not necessary. (Care must be taken since Cref may raise the gain, facilitating oscillation.) ( 1)The output start-up time is proportional to Cref. : 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 and CO is.µf and 7µF, respectively. However, ajust them as necessary after checking., : These devices are necessary to set the output voltage. The output voltage O is given by the following formula: O=ref (1/) (ref is 1.2 TYP) The standard value of is 9Ω. But value up 1kΩ does not cause any trouble.

7 Low Power-Loss oltage Regulators PQ/PQ1/PQ/PQ1 ON/OFF Operation D1 ADJ D2 IN O CIN ADJ D2 R CO RL RL O' RD High : Output OFF C Low : Output ON Equivalent Circuit in OFF-state ON/OFF operation is available by mounting externally D2 and R. When ADJ is forcibly raised above ref(1.2 TYP)by applying the external signal, the output is turned off(pass transistor of regulator is turned off). When the output is OFF, ADJ must be higher then ref MAX., and at the same time must be lower than maximum rating 7. In OFF-state, the load current flows to RL from ADJ through. Therefore the value of must be as high as possible. O'=ADJ RL/(RL) occurs at the load. OFF-state equivalent circuit up to 1kΩ is allowed. Select as high value of RL and as possible in this range. In some case, as output voltage is getting lower(o<1), impedance of load resistance rises. In such condition, it is sometime impossible to obtain the minimum value of O'. So add the dummy resistance indicated by RD in the figure to the circuit parallel to the load. An Example of ON/OFF Circuit Using the 1-chip Microcomputer Output Port(PQ) <Specification> Output port of microcomputer OH(max)=. OH(min)=2. (IOH=.2mA) MAX. rating of IOH=.mA Output should be set as follows. 1.6 RL=2Ω(IO=.A) From O=1.2(1/)we get O=1.6. /=11.8 Assuming that F(max)=.8 for D2 in case of OH(min)=2., we get ADJ=OH(min) F(max)=2..8=1.6. From ref(max)=1. we get R=Ω If =1kΩ, we get =11.8 =11.8kΩ and IOH as follows, ingnoring RL (2Ω): IOH=1.6 ()/ =1.6 (1kΩ11.8kΩ)/1kΩ 11.8kΩ=.17mA Hence, IOH<.2mA. Therefore OH(min)is ensured. Next, assuming that F(min)=. for D2 in case of OH(max), we get: IOH=(.)()/ =.9mA which is less than the rating. Figure 1 shows the O C characteristics when =1kΩ, =11kΩ, R=Ω, IN=17, RL=2Ω, and D1=1S276A(Hitachi).

8 Low Power-Loss oltage Regulators PQ/PQ1/PQ/PQ1 Output oltage vs. Control oltage(pq) Output voltage O () 1 1 IN=17 RL=2Ω =1kΩ =11kΩ R= D1=1S276A Control voltage C () Model Line-ups for Lead Forming Type Output current 1A output 2A output Output voltage precision:±2.% PQB PQB Outline Dimensions(PQB/PQB) (Unit : mm) 1.2MAX.±.2 2.8±.2 (2.6) 7.±.2 PQ.6±.2 ø.2± (1.) (2.) 16.±.7 (±.) (2.) (.) ±. (.2).MIN 8.2±.7 ➀➁➂➃ Internal connection diagram ➀ ➁ Specific IC ➃ ➂ ( ) : Typical value Radius of lead forming portion : R=. to 1.mm ➀ DC input(in) ➁ DC output(o) ➂ GND ➃ Output voltage minute adjustment terminal(adj) Note) The value of absolute maximum ratings and electrical characteristics is same as ones of PQ/2 series.

9 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 --- arious 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.