Ordering number :ENN5285 Monolithic linear IC LA5615M Lead Battery Charger IC with Battery Voltage Detection Function Overview Package Dimensions The LA5615M is an IC that integrates a battery voltage detection and lead battery charger on a single chip that supports compact sets. unit: mm 3097-MFP16FS Functions and Features 16 9 1.8max 8 1 0.15 0.1 1.5 12.6 6.35 7.6 5.4 • Charge voltage can be switched between cycle charge and trickle charge (4.9 V typ. → 4.6 V typ.). • Charge current limit can be set with an external resistor (125 mA typ.). • Built-in charge current detection circuit • Built-in battery voltage detection circuit 0.625 [LA5615M] 0.35 1.0 1.35 2.8 0.625 SANYO: MFP16FS Specifications Maximum Rating at Ta = 25°C Parameter Symbol Conditions Ratings Unit Supply voltage VCC max 15 Battery pin voltage VBatt max 6 Allowable power dissipation Pd max 0.7 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 6.15 to 14.5 V VBatt IN 0 to 5.5 V CHARGE LED sink current ICHG-LED 0 to 40 mA DET LED sink current IDET-LED 0 to 40 mA VBatt sink current IBatt-LED 0 to 40 mA Supply voltage VCC Battery pin voltage 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 22500RM (OT) No. 5285-1/7 LA5615M Electrical Characteristics at Ta = 25°C, VCC = 9 V = VBatt IN = 4 V Parameter Symbol Conditions Ratings min typ Unit max [Charge System] Charge voltage (when trickle is selected) VO1 IO = 10 mA 4.45 4.6 4.75 Charge voltage (when cycle is selected) VO2 IO = 50 mA 4.75 4.9 5.05 V Differential voltage of VO2 and VO1 ∆VO ∆VO = VO2 – VO1 0.2 0.3 0.4 V mA Cycle trickle switching current ICT Output peak current IOP RL = 33 Ω V 34 40 46 112.5 125 137.5 mA Line regulation (when trickle is selected) VOLN1 VCC = 8 to 14.5 V, IO = 10 mA 50 100 mV Line regulation (when cycle is selected) VOLN2 VCC = 8 to 14.5 V, IO = 50 mA 100 150 mV Load regulation (when trickle is selected) VOLD1 IO = 0.5 to 30 mA 50 100 mV Load regulation (when cycle is selected) VOLD2 IO = 50 to 60 mA 100 150 mV IQ1 IO = 0 mA 6 10 mV IQ2 IO = 50 mA 13 21 mA CHARGE LED residual voltage VCHG-LED IIN = 40 mA 1.1 1.3 V CHARGE LED leak current ICHG-LED 200 nA 1 1.2 mA 1.1 1.3 V 200 nA Current drain VIN = 9 V 0.8 CHARGE detection current ICHARGED DET LED residual voltage VDET IIN = 40 mA DET LED leak current IDET VIN = 9 V POWER DET detection voltage VDET-IN 5.85 6.05 6.15 V POWER DET hysteresis width VDET-HYS 0.1 0.2 0.3 V 3.17 3.3 3.43 V 0.3 0.5 V 200 nA 5 6 µA 350 500 µA [Battery Detection System] Battery detection voltage VBatt VBAT pin residual voltage VBAT IIN = 40 mA VBAT pin leak current IBAT VIN = 5 V Current drain when detection circuit is OFF IOFF VBatt = 2.5 V Current drain when detection circuit is ON ION No load Current drain during Battery SAVE ISAVE VBatt. SAVE = 4 V 20 30 µA VBAT.B IIN = 40 mA 1.1 1.3 V REST residual voltage VREST REST.IN = 2 µA, IIN = 50 µA 0.3 REST leak current IREST VIN = 5 V Battery B residual voltage [Internal transistors for reset] 0.5 V 200 nA [Internal transistors for reset] Threshold voltage SAVE pin input current VSAVE.TH. ISAVE..IN 1.1 VIN = 4 V 1.27 1.5 V 17 24 µA No. 5285-2/7 Allowable power dissipation, Pd max — mW LA5615M Recommended board mounting Independent IC Operating temperature, Ta — °C Recommended Board Copper plating 180 mm2 Board material: Paper phenol t = 1.5 mm Pin Assignment No. 5285-3/7 LA5615M Sample Application Circuit To current limiter Overdrive control Reset IC (external) GND (frame) Notes: 1. Use capacitors with little temperature-related capacitance fluctuation (Sanyo capacitors, etc.). 2. The reset IC must be provided externally. No. 5285-4/7 LA5615M Battery Charger Charging Characteristics Cycle charge Trickle charge Battery pin voltage (V) Charge Current (mA) Current limiting with current limiter Charge current characteristics Detects charge current of 40 mA and switches charge voltage from 4.9 V to 4.6 V * Charge current is variable Charge voltage characteristics Charging Time Current Drain Characteristics (+VBatt circuit current) Reset on Battery SAVE on current Reset off current (+reset circuit current, reset circuit provided externally) Relationship between Reset and VBatt Circuit VBatt voltage 3.3 [V] or higher Reset voltage 2.8 [V] The VBatt circuit operates at the edge where the reset voltage becomes Hi. (At this time, the output transistors are set on and the load put on; If this voltage is 3.3 [V] or higher, the VBatt circuit operates, and if it is lower than 3.3 [V], it does not start up.) No. 5285-5/7 LA5615M Timing Charts (Battery provided) (Battery only) No. 5285-6/7 LA5615M 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. 5285-7/7