Ordering number :ENN5238 Monolithic Linear IC LA5614M Charging IC for Nickel – Cadmium and Nickel Metal Hydride Batteries Functions and Features Package Dimensions • Ideally suited for charging systems that use a microcontroller due to charge voltage detection. • Cycle charge/trickle charge switching. • Change current can be set with external resistor. unit: mm 3086A-MFP10S 10 0.625 [LA5614M] 4.4 5.15 6.4 6 1.8 max 5 1 0.15 0.1 1.5 5.1 0.35 1.0 0.55 SANYO: MFP10S Specifications Maximum Rating at Ta = 25°C Parameter Maximum supply voltage VCONT input voltage BIN pin voltage Symbol Conditions Ratings 9 VCONT max 9 V VBIN max 9 V VON/OFF max ON/OFF pin voltage Unit VCC max Allowable power dissipation Pd max 5 Independent IC 250 V V mW Operating temperature Topr –20 to +80 °C Storage temperature Tstg –30 to +125 °C Ratings Unit Operating Conditions at Ta = 25°C Parameter Symbol Conditions Supply voltage VCC 6 ±0.3 VCONT voltage VCONT 6 ±0.3 V V Base output current IBASE 0 to 14 mA Trickle sink current ISINK 0 to 50 mA 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 22900RM (OT) No. 5238-1/5 LA5614M Electrical Characteristics at Ta = 25°C, VCC = VCONT = 6 V in specified test circuit Parameter Symbol Quiescent current ICC Base output current VCONT ON voltage ON/OFF control OFF voltage Conditions Ratings min typ VCONT = 0 [V] IB 10 VC 0.6 VOFF Trickle sink current ISINK VON = 0 [V], 27 Ω resistor between ITR and GND VBAT = 4.2 [V] 14 Unit max 10 µA 18 mA 1.2 3.4 V 1.0 1.5 V 50 60 mA [OUT pin block] Rise offset voltage VOOS Output "L" level voltage VOL Output "H" level voltage VOH Output gain VOG 0 V ≤ VBAT < 3.6 V VBAT = VCC 3.4 3.6 3.8 V 0 0.05 0.1VCC V VCC V 9.5 11.0 dB 0.8VCC 8.0 Allowable power dissipation, Pd max — W Pd max — Ta Ambient temperature, Ta — °C Pin Assignment No. 5238-2/5 LA5614M Pin Functions Pin No. Pin name 1 VCC 2 ITR Trickle sink current setting pin Connect a resistor between GND and this pin 3 BIN Secondary battery negative electrode and external NPN transistor collector connection pin 4 Base External NPN transistor base connection pin 5 Emitter 6 GND MIN. potential of this IC 7 OUT Charge voltage detection output pin Offset voltage: 3.6 V Output gain × 3 (when 3.6 V < VBAT < VCC, 3 ∆ VBAT is output) 8 ON/OFF 9 ISET 10 VCONT Function Equivalent circuit External power supply pin External NPN transistor emitter and cycle charge current detection resistor connection pin Pin that switches between cycle charge and trickle charge Open: Cycle "L": Trickle Pin for setting cycle charge current Connection of resistor between (9) and GND: Small charge current Connection of resistor between (9) and (8): Large charge current Pin that controls ON/OFF operation of this pin. "H": ON No. 5238-3/5 LA5614M Test Circuit Equivalent Circuit Block Diagram and Peripheral Circuit Example (Values are reference values) Nickel – cadmium or nickel metal hydride secondary battery (3 cells) Microcontroller 2SD1623 or equivalent product Cycle charge current detection resistor Trickle charge current setting resistor Microcontroller Application Cautions The charging conditions of the secondary battery to be used must be set according to the battery specifications. No. 5238-4/5 LA5614M 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 February, 2000. Specifications and information herein are subject to change without notice. PS No. 5238-5/5