Ordering number: EN3892B Monolithic Linear IC L88R05 Series 5 V, 1 A Voltage-regulator ICs with Reset Function Overview Package Dimensions The L88R05 Series is a series of low-saturation voltage regulator ICs that are equipped with a function that generates a reset signal when the power supply for a microcontroller system is turned on or off. unit : mm 3079-T0220-5H [L88R05 Series] Applications . Prevents malfunction when the microcontroller power supply turned on or off. . isDesigned to handle malfunction caused by momentary power interruptions. . Suited for portable electronic equipment, mobile electronic equipment, and other battery-powered equipment with little capacity to handle fluctuation in input voltage; also suited for equipment with large fluctuations in the primary power supply. Functions . Power supply reset generation function; the reset threshold . SANYO : TO220-5H voltages are ranked. L88R05C: VRT = 4.5 V L88R05D: VRT = 4.2 V L88R05E: VRT = 3.9 V 5 V, 1 A output characteristics Features . Minimum I/O voltage difference is small (0.5 V typ.), making power conservation possible, and makes smaller heatsink and possible. . transformers External capacitor for reset signal output delay time adjustment. . Sink/source reset output provides compatibility with logic circuitry that has an internal pull-down resistor. Active pull-up noise suppression. . facilitates Various types of protective circuits on chip (fold back current limiting, thermal protection). . The package is the TO220-5H; this package facilitates designs for the radiation of heat during the mounting process. 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 Bussiness Headquarters TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN O1596HA(II)/5272TS No.3892-1/6 L88R05 Series Specifications Maximum Ratings at Ta = 25°C Parameter Symbol Maximum input voltage VIN max Reset pin voltage Conditions Ratings Unit 18 18 V 1.75 W 20 W VRES max Ta % 25°C, independent IC V Allowable power dissipation Pd max Junction-to-ambiet thermal resistance U j-a 71.4 °C/W Junction-to-case thermal resisitance U j-c 5 °C/W Operating temperature Topr –40 to +85 °C Storge temperature Tstg –55 to +150 °C Tc % 50°C, ideal radiation of heat Operating Conditions at Ta = 25 °C Ratings Unit Input voltage Parament Symbol VIN Conditions 5.6 to 17 V Output current lOUT 0 to 1 A Reset output source current lORH 0 to 200 μA Reset output sink current lORL 0 to 2 mA Operating Characteristics at Tj = 25 °C, VIN = 8 V, IOUT = 1 A, COUT = 47 μA for specified circuits Parameter [Power Supply] Output voltage Dropout voltage Line regulation Load regulation Peak output current Output short-circuit current Current drain Output noise voltage Output voltage temperature coefficient Ripple rejection ratio [Reset] High-level reset output voltage Low-level reset output voltage Symbol VOUT VDROP1 VDROP2 ΔVOLN ΔVOLD lOP lOSC IQ1 IQ2 VNO ΔVo/ΔTa Rrej VORH VORL Reset threshold voltage VRT Reset hysteresis voltage Output delay time Vhys td Condition min typ max Unit 4.85 5.15 1.0 0.50 70 150 10 Hz % f % 100 kHz 5.0 0.5 0.25 10 50 1.8 0.3 2.1 32 70 V V V mV mV A A mA mA μVrms Tj =25 to 125 °C –0.5 lOUT = 300 mA 5.6 V % VIN % 17 V 5 mA % IOUT % 1 A 1 IOUT = 0 f = 120 Hz, 6 V % VIN % 17 V 1.2 4 80 mV/°C 60 lORH = 200 μA, CD open lORL = 2 mA, CD grounded C-rank D-rank E-rank 4.83 4.3 4.0 3.7 50 7.5 Cd = 0.1 μF 4.98 100 4.5 4.2 3.9 100 10 dB 5.13 200 4.7 4.4 4.1 200 12.5 V mV V V V mV ms Pin Assignments Top view No.3892-2/6 L88R05 Series Reference voltage Starter circuit Equivalent Circuit Block Diagram Error amplifier Overcurrent limiting Thermal protection Measurement Circuit Unit (capacitance: F) No.3892-3/6 L88R05 Series Sample Application Circuit To VDD of peripheral circuit Unit (capacitance: F) Notes: 1. Set COUT to be 47 μF or greater and select it according to the applications. 2. Use the capacitators for COUT and Cd with high-temperature stability. L88R05C’s Reset Operation No.3892-4/6 L88R05 Series VO – VIN Output voltage, VO – V Output voltage, VO – V VO – IO Input voltage, VIN – V IQ – VIN Current drain, IQ – mA Output voltage, VO – V Output current, IO – A VO – Ta Input voltage, VIN – V VDROP – IO Current drain, IQ – mA Dropout voltage, VDROP – V Ambient temperature, Ta – °C IQ – IO Output current, IO – A VRES – VO Output current, IO – A VRES – VO D-type Reset voltage, VRES – V Reset voltage, VRES – V C-type Output voltage, VO – V Output voltage, VO – V No.3892-5/6 VRES – VO Reset voltage, VRES – V E-type Output voltage, VO – V Allowable power dissipation, Pd max – W L88R05 Series Pd max – Ta Infinite heatsink Sillicon grease on heatsink 39 Nvcm mounting torque θj-c = 5°C/W θj-a = 71.4°C/W 100 × 100 × 2 mm3 Al plate 50 × 50 × 2 mm3 Al plate No heatsink Ambient temprature, Ta – °C 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 October, 1996. Specifications and information herein are subject to change without notice. PS No.3892-6/6