Ordering number : ENN5672A Monolithic Linear IC LA5618 Multi-System Power Supply for Audio Equipment Overview Package Dimensions The LA5618 is a multi-system power supply IC with a built-in on/off control function. It is optimal for use as the power supply IC in CD players, mini-component stereo systems, and other microcontroller controlled audio equipment. unit: mm 3049B-SIP12H [LA5618] 27.0 Functions 4.0 2.5 12 2.0 0.5 13.2max 6.0 R1.7 11.8 1 1.0min 7.0 • Power supply IC with ±7.5 V outputs (±1.5 A) and an on/off control function. • The LA5618 is pin compatible with the LA5617. 8.4 20.0 0.4 1.0 2.0 SANYO: SIP12H Specifications Maximum Ratings at Ta = 25°C Parameter Input voltage Symbol Conditions Ratings VCC/VEE max Allowable power dissipation Pd max With no heat sink Unit ±18 V 2.4 W Operating temperature Topr –20 to +85 °C Storage temperature Tstg –55 to +150 °C Ratings Unit ±9.5 to ±16 V Operating Conditions at Ta = 25°C Parameter Input voltage Symbol VCC/VEE Output current Conditions IOUT1 0 to 1.5 A IOUT2 –1.5 to 0 A Any and all SANYO products described or contained herein do not have specifications that can handle applications that require extremely high levels of reliability, such as life-support systems, aircraft’s control systems, or other applications whose failure can be reasonably expected to result in serious physical and/or material damage. Consult with your SANYO representative nearest you before using any SANYO products described or contained herein in such applications. SANYO assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all SANYO products described or contained herein. SANYO Electric Co.,Ltd. Semiconductor Company TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN 52804TN (OT) No. 5672-1/4 LA5618 Operating Characteristics at Ta = 25°C, VCC/VEE = ±9.5 V, in the specified test circuit. Parameter Symbol Ratings Conditions min typ Unit max [+7.5 V Power Supply Block] IOUT1 = 500 mA, COUT1 = 100 µF Output voltage VO1 Dropout voltage 7.5 8.0 V VDROP1-1 7.0 1.5 2.0 V VDROP1-2 IOUT1 = 300 mA 1.0 1.5 V 20 100 mV 80 200 mV Line regulation ∆VOLN1 Load regulation ∆VOLD1 Peak output current IOP1 Output short current IOSC1 Output off voltage 5 mA ≤ IOUT1 ≤ 1 A VCC/VEE = ±12 V 1.5 1.8 A 1.0 VO1OFF Ripple rejection 9 V ≤ VCC ≤ 16 V VEN = 0.4 V f = 120 Hz, 8.5 V ≤ VCC ≤ 16 V, CN1 = 1 µF Rrej1 A 0.3 65 V dB [–7.5 V Power Supply Block] IOUT2 = 500 mA, COUT2 = 100 µF Output voltage VO2 Dropout voltage –7.5 –7.0 V VDROP2-1 –8.0 1.5 2.0 V VDROP2-2 IOUT2 = –300 mA 1.0 1.5 V 200 300 mV 80 200 mV –1.8 –1.5 A Line regulation ∆VOLN2 Load regulation ∆VOLD2 Peak output current IOP2 Output short current IOSC2 Output off voltage –1 A ≤ IOUT2 ≤ –5 mA VCC/VEE = ±12 V VO2 OFF Ripple rejection –16 V ≤ VEE ≤ –9 V VEN = 0.4 V –1.0 A 50 dB –0.3 V f = 120 Hz, 16 V ≤ VEE ≤ –8.5 V, CN2 = 1 µF Rrej2 [Common Circuit Block] COUT1 = 100 µF, COUT2 = 100 µF Output off control voltage VENL VO1, VO2: Off Current drain (positive voltage power supply block) IQP1 IOUT1 = 0, IOUT2 = 0 0.4 IQP2 IOUT1 = 1.5 A, IOUT2 = 0 Current drain (negative voltage power supply block) IQM1 IOUT1 = 0, IOUT2 = 0 IQM2 IOUT1 = 0, IOUT2 = –1.5 A 5.0 V mA 7.0 mA –5.0 mA –12.0 mA Pd max — Ta Allowable power dissipation, Pd max — W 14 13.0 12 10.4 10 With an arbitrarily large heat sink 100 × 100 × 1.5mm3 8 6.25 6 50 × 50 × 1.5mm3 5.4 4 2.4 2 3.25 Independent IC 1.25 0 –20 0 20 40 60 80 100 Ambient temperature, Ta — °C Pin Assignment 1 2 3 4 5 6 7 8 9 10 11 12 NC VO1 VCC CN1 EN TP GND NC CN2 VEE VO2 NC LA5618 Top view Note: The TP pin is used for IC testing. It must be left open during normal operation. The NC pins must also be left open during normal operation. A06997 No. 5672-2/4 LA5618 Equivalent Circuit Block Diagram VCC VO1 CN1 GND 3 2 Error amplifier VREF 4 7 Startup circuit VREF ON/OFF Thermal protection circuit Current limiter VMUTE VCC Current limiter 140 µA VCC ON/OFF 100 kΩ VO2 VEE 11 10 Comparator 60 kΩ 9 Error amplifier VREF 100 Ω CN2 1.8 V 30 kΩ 5 EN 6 TP Note: The TP pin is used for IC testing. It must be left open during normal operation. A06998 No. 5672-3/4 LA5618 Sample Application Circuit: Mini-component stereo system power supply LA5618 CN1 1 µF 4 VCC 3 VO1 VO1 and VO2 blocks VO2 VEE 7.5V 2 Audio circuit block 11 –7.5V 9 10 CN2 Bias blocks 1 µF 5 EN On/off control 7 GND A06999 Notes: 1. The VO1 and VO2 output capacitors must have values of at least 100 µF and capacitors with low temperature coefficients must be used to prevent oscillation at low temperatures. 2. External noise can be suppressed and ripple rejection improved by adding capacitors between CN1 and VO1 and between CN2 and VO2. Specifications of any and all SANYO products described or contained herein stipulate the performance, characteristics, and functions of the described products in the independent state, and are not guarantees of the performance, characteristics, and functions of the described products as mounted in the customer’s products or equipment. To verify symptoms and states that cannot be evaluated in an independent device, the customer should always evaluate and test devices mounted in the customer’s products or equipment. SANYO Electric Co., Ltd. strives to supply high-quality high-reliability products. However, any and all semiconductor products fail with some probability. It is possible that these probabilistic failures could give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire, or that could cause damage to other property. When designing equipment, adopt safety measures so that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective circuits and error prevention circuits for safe design, redundant design, and structural design. In the event that any or all SANYO products (including technical data, services) described or contained herein are controlled under any of applicable local export control laws and regulations, such products must not be exported without obtaining the export license from the authorities concerned in accordance with the above law. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, or any information storage or retrieval system, or otherwise, without the prior written permission of SANYO Electric Co., Ltd. Any and all information described or contained herein are subject to change without notice due to product/technology improvement, etc. When designing equipment, refer to the “Delivery Specification” for the SANYO product that you intend to use. Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. SANYO believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties. This catalog provides information as of May, 2004. Specifications and information herein are subject to change without notice. PS No. 5672-4/4