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| Ordering number : ENN6520 Monolithic Linear IC LA5645T Constant-Voltage/Constant-Current Control IC Overview The LA5645T is a constant-voltage/constant-current control IC that incorporates low-voltage operational amplifiers and a high-precision reference voltage circuit (VREF = 1.5 V 1.0%). This device is optimal for use as a secondary side controller in battery chargers, switching regulators, and similar products. Package Dimensions unit: mm 3245-MSOP8 [LA5645T] 3.0 8 5 0.5 Features * * * * * Operating supply voltage: 2.5 to 14 V High-precision reference voltage: 1.5 V 1.0% PC pin current: 60 mA (max) Current drain: 3 mA (max) Input offset voltage: 2 mV (max) 3.0 4.9 0.65 (0.5) 1 4 0.25 (0.85) 1.1max 0.25 0.08 SANYO: MSOP8 Specifications Maximum Ratings at Ta = 25C Parameter Supply voltage Differential input voltage Allowable power dissipation PC pin current Operating temperature Storage temperature Symbol VCC max VID max Pd max IPC max Topr Tstg Independent IC Mounted on the specified printed circuit board* Conditions Ratings 14.5 14.5 200 370 60 -40 to +85 -50 to +150 Unit V V mW mW mA C C Note: * Specified printed circuit board: 20 x 10 x 0.8 mm3, paper phenolic board. Operating Conditions at Ta = 25C Parameter Recommended supply voltage Symbol Vopr Conditions Ratings 2.5 to 14 Unit V 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 83000RM (OT) No. 6520-1/5 LA5645T Pd max -- Ta Mounted on the specified Board size: 20 x 10 x 0.8 mm3 Board material: Paper phenolic 0.37 0.5 Allowable power dissipation, Pdmax -- W 0.4 printed circuit board 0.3 Independent IC 0.2 0.19 0.1 0.10 0 -40 -20 0 20 40 60 80 100 Ambient temperature, Ta -- C ILA00181 Electrical Characteristics at Ta = 25C, VCC = 5 V Parameter Current drain Leakage current Saturation voltage Reference voltage Reference voltage regulation Symbol ICC IPC LEAK VPC (sat) VREF IPC = OFF VCC = VPC = 14 V IPC = 50 mA IREF = 0 mA 1485 0.5 1500 Conditions Ratings min typ 1 max 3 100 0.7 1515 30 Unit mA A V mV mV VREF/IREF IREF = 0 to 5 mA VIO IIO IB AV VICM SR GB Design guarantee* Design guarantee* Open loop gain (design guarantee*) 0 0.8 2 0.5 5 80 80 [Amplifier Block] (Characteristics common to both channels A and B) Input offset voltage Input offset current Input bias current Voltage gain Common-mode input voltage range Slew rate Gain-bandwidth product 2 50 250 mV nA nA dB VCC - 2 V V/s MHz Note: * Design guarantee value. These parameters are not measured. Pin Assignment PC 1 8 VCC A A--INPUT 2 B VREF 7 VREF A+INPUT 3 6 B--INPUT GND 4 5 B+INPUT ILA00182 No. 6520-2/5 LA5645T ICC -- Ta VCC = 5 V 1000 1200 1200 ICC -- VCC Ta = 25 C Current drain, ICC -- A Current drain, ICC -- A 1000 800 800 600 400 600 200 400 --50 0 0 50 100 150 ILA00183 1.55 0 5 10 15 ILA00184 Ambient temperature, Ta -- C 2.0 Supply voltage, VCC -- C VREF -- IREF VCC = 5 V, Ta = 25 C VREF -- VCC Ta = 25 C Reference voltage, VREF -- V 1.8 Reference voltage, VREF -- V 1.50 1.45 1.6 1.40 1.4 1.35 1.2 1.30 1.0 0 10 20 30 ILA00185 1.25 0 5 10 15 ILA00186 Pin 7 output current, IREF -- mA 3 Supply voltage, VCC -- V 1.500 VIO -- Ta VCC = 5 V VREF -- Ta VCC = 5 V Input offset voltage, VIO -- mV Reference voltage, VREF -- V 2 1.498 1.496 1 Channel A offset 0 1.494 Channel B offset --1 1.492 1.490 --2 1.488 1.486 --50 --3 --50 0 50 100 150 ILA00187 0 50 100 150 ILA00188 Ambient temperature, Ta -- C Ambient temperature, Ta -- C No. 6520-3/5 LA5645T VPC(sat) -- IPC Output saturation voltage, VPC(sat) -- mV VCC = 5 V, Ta = 25 C 300 350 600 VPC(sat) -- Ta VCC = 5 V IPC = 50 mA Output saturation voltage, VPC(sat) -- mV 500 250 400 200 300 150 200 100 50 0 0 20 40 60 80 ILA00189 100 0 --50 0 50 100 ILA00190 Pin PC current, IPC -- mA 100 90 Ambient temperature, Ta -- C 8 IB -- Ta VCC = 5 V IIO -- Ta VCC = 5 V 6 Input offset current, IIO -- nA Input bias current, IB -- nA 80 70 60 50 4 Channel A 2 0 Channel B Channel A Channel B --2 --4 --6 --8 --50 40 30 20 --50 0 50 100 150 ILA00191 0 50 100 150 ILA00192 Ambient temperature, Ta -- C Ambient temperature, Ta -- C Channel A Voltage Gain and Phase vs. Frequency 100 80 Channel B Voltage Gain and Phase vs. Frequency 100 80 Voltage gain, VG -- dB VCC = 5 V, Ta = 25 C Channel A Amp External resistor ratio 100 k / 1 k Voltage gain, VG -- dB Phase, o -- degrees 180 VCC = 5 V, Ta = 25 C Channel B Amp External resistor ratio 100 k / 1 k Phase Phase, o -- degrees 180 60 60 Phase 40 40 Gain 20 0 0 Gain 20 0 0 --20 --40 1k --180 3 57 10M ILA00193 --20 --40 1k --180 3 57 10M ILA00194 2 3 57 10k 2 3 57 100k 2 3 5 71M 2 2 3 57 10k 2 3 57 100k 2 3 5 71M 2 Frequency, f -- Hz Frequency, f -- Hz No. 6520-4/5 LA5645T Sample Application Circuit PC (PHOTO COUPLER) R1 VI CONTROL IC R3 8 2 A 3 VREF = 1.5 V 1% R2 RSC R4 4 LA5645T B 6 7 R6 1 5 Battery R5 PC ILA00195 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 August, 2000. Specifications and information herein are subject to change without notice. PS No. 6520-5/5 |
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