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| Ordering number: EN7258 Monolithic Linear IC LA5636M DC/DC Converter Secondary Side Control IC Overview The LA5636M is a DC/DC Converter Secondary Side Control IC that draws power from a car battery and is ideal for use in rechargers for lithium ion batteries, etc. Because this IC incorporates only the basic functions (constant voltage control and constant current control) that are needed in an IC for charging, it can be easily used in combination with other ICs for charging. Package Dimensions unit: mm 3086B [3086B] 10 6 0.63 1.7max 4.4 0.15 (0.5) 5.0 * Includes integrated circuitry for preventing the malfunction of the system in the event that the input voltage (car battery voltage) drops. * Produces constant voltage output in proportion to the PWM input signal. (Permits output voltage control by microcontroller.) * High-precision reference current (current control amp): 92.5 A2.7% * Output voltage can be set through an external resistor. * Each loop of the voltage amp and current amp is independent. 1 5 0.35 1.0 0.1 (1.5) SANYO: MFP-10S(225mil) Specifications Maximum Ratings at Ta = 25C Parameter Supply voltage Allowable power dissipation DOUT terminal current/voltage PWM input voltage ICONST terminal voltage C1 terminal voltage Operating temperature Performance garanteed temperature Storage temperature Symbol VCC max Pd max Idtmax/Vdtmax Vpwm VICONST VC1 Topr1 Topr2 Tstg Conditions Ratings 14.5 350 1/ -0.2 to VCC -0.2 to 3.0 -0.2 to VCC -0.2 to VCC -40 to +85 -25 to +75 -40 to +150 Unit V mW mA/V V V V C C C 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 52303AS (II) No.7258-1/7 6.4 Features LA5636M Electrical Characteristics at Ta = 25C, VCC=12V Parameter Operating voltage Current drain PWM input high voltage PWM input low voltage PWM input current PWM input frequency Reference voltage 1 Reference voltage 2 Reference voltage 3 Reference voltage 4 Reference current Symbol VCC ICC VpwmH VpwmL Ipwm Fpwm V-IN1 V-IN2 V-IN3 V-IN4 IREF VCC = 10.5 to 13 V, PWM = L * Ta = -25 to 75C VCC = 10.5 to 13 V, PWM = H * Ta = -25 to 75C VCC = 8.5 V, PWM = L * Ta = -25 to 75C VCC = 8.5 V, PWM = H * Ta = -25 to 75C VCC = 10.5 to 13 V, when 27 k is connected * Ta = -25 to 75C Vpwm = 0.0 V 30 -4 (1.92 V) Dout = off, Vpwm = off, R = 27 k 1.7 0 30 32 2.0 V 37 +4 (2.08 V) Conditions min 10.3 4 2.9 0.8 Ratings typ max 13.0 V mA V V nA Hz % % V V A Unit -6 0.72 V +6 (0.68 V) (0.76 V) 1.56 0.59 90.0 -- -- 92.5 -- -- 95.0 * The design is guaranteed over the temperature range, so the temperature is not measured. Pd max -- Ta With specified board Allowable power dissipation Pd max - W 1.0 0.8 0.80 0.6 0.4 IC alone 0.42 0.35 0.2 0 --40 Specified board 76.1 x 114.3 x 1.6 mm3 Glass epoxy resin --20 0 20 40 60 80 0.18 100 Ambient temperature Ta - C ILA00995 Pin Assignment GND 1 10 V+IN ICONST 2 9 V-IN DOUT 3 LA5636M 8 C1 PWM 4 7 ISEN+IN VCC 5 6 ISEN-IN Top view No. 7258-2/7 LA5636M VCC -- ICC Ta=25C 3.5 4.0 2.5 VCC -- V-IN1, V-IN2 Ta=25C V-IN1 Current drain ICC - mA 3.0 2.5 2.0 1.5 1.0 0.5 0 0 5 I CC Reference voltage 1 V-IN1 - V Reference voltage 2 V-IN2 - V 2.0 1.5 1.0 V-IN2 0.5 0 10 15 20 ILA00996 2.5 3 8 13 18 ILA00997 Supply voltage VCC - V 95.0 94.5 Supply voltage VCC - V Ta -- Iref Reference voltage 1 V-IN1 - V Reference voltage 2 V-IN2 - V Ta -- V-IN1, V-IN2 V-IN1 Reference current Iref - A 94.0 2.0 Iref 93.5 93.0 92.5 92.0 91.5 91.0 90.5 90.0 --50 0 50 100 150 ILA00998 1.5 1.0 V-IN2 0.5 0 --50 0 50 100 150 ILA00999 Ambient temperature Ta - C Ambient temperature Ta - C No. 7258-3/7 Block Diagram DOUT 10 8 7 6 9 2 V+IN C1 Isen+IN Isen-IN V-IN ICONST 3 Vcc 5 Tr7 R6 R8 - X1 R7 R9 X4 + - 2.0V + X2 + R4 R5 30k Vref 2.5V 1% R10 1.6k + Tr13 X5 - 1.25V R11 100k 4 PWM 200k - - X3 Tr12 + Tr9 Tr8 Tr1 Tr2 Tr3 R3 Tr10 Tr11 Tr4 Tr6 10k LA5636M Tr5 R1 R2 13k 33k GND 1 No. 7258-4/7 IN OUT 12V/24V RA Batt Lithium ion battery + + 5 Vcc ISEN+IN V+IN 10 Application Circuit Diagram 1 (DC Mode) 1. OUT voltage can be set as desired by varying RA and RB. LA5636M 7 + Nickel hydride battery + 3 DOUT LA5636M ISEN-IN 6 C1 PWM GND ICONST V-IN 1 2 9 8 4 RB GND GND No. 7258-5/7 IN VOUT 12V/24V Batt Lithium ion battery Nickel hydride battery + + 5 Vcc V+IN 10 ISEN+IN 7 + Application Circuit Diagram 2 (PWM Mode) + 3 DOUT ISEN-IN 6 GND ICONST V-IN C1 PWM LA5636M LA5636M 1 2 9 8 4 GND GND GND PWM A/D1 A/D2 7.8V A/D1: Output current (Limit value for completion of charging) A/D2: Output voltage (Limit value for completion of charging) PWM: Refer to the diagram below for the relationship between the duty ratio and the output voltage Microcontroller 3V 0V Outpu voltage (VOUT) 3V Duty ratio variable at 30Hz 100% 0% Duty Signal applied to PWM input No. 7258-6/7 Output voltage vs Duty Ratio LA5636M 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, 2003. Specifications and information herein are subject to change without notice. PS No. 7258-7/7 |
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