Ordering number : EN7559C Monolithic Linear IC LA5693AM Voltage Regulator Driver with Watchdog Timer Overview The LA5693AM is a single-chip voltage regulator for microcomputer system monitor use that performs the functions of 5V output voltage control, watchdog timer, and voltage detector. Since the LA5693AM can hold the reset output, it is especially suited for use in peripheral control and monitor output applications including valves used in refrigeration equipment, hot water supply system. In addition, as the LA5693AM assures reliable operation over a wide range of operating temperatures (-40 to +125°C), it can find many applications in microcontroller systems for use in automobiles and other industrial equipment. Features • • • • An external PNP transistor can be used to provide a low-saturation voltage regulator. Since the CK input has no edge detector, a high degree of flexibility is allowed in applications. Variable detection voltage. The watchdog time can be made longer. Functions • Output voltage 5V control. • Watchdog timer. • Power-ON reset function. • Reset hold output [RES (2)] (Cleared with CK reinput). Specifications Maximum Ratings at Ta = 25°C Parameter Symbol Control pin voltage VCONT max Control pin voltage VCONT max Control pin current ICONT max CK input voltage Reset pin voltage VCK max VRES(1) max, VRES(2) max Conditions 1sec *VCC ≥ 6V Ratings Unit 60 V 41 V 11 mA 25 v 41 V Continued on next page. Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to "standard application", intended for the use as general electronics equipment (home appliances, AV equipment, communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee thereof. If you should intend to use our products for applications outside the standard applications of our customer who is considering such use and/or outside the scope of our intended standard applications, please consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our customer shall be solely responsible for the use. Specifications of any and all SANYO Semiconductor Co.,Ltd. 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. 72110 SY / 31307 MS PC / 92706 / 11206 MS OT B8-8760,B8-7049 No.7559-1/7 LA5693AM Continued from preceding page. Parameter Allowable power dissipation Symbol Conditions Ratings Unit Pd max 370 mW Operating temperature Topr -40 to +125 °C Storage temperature Tstg -55 to +150 °C * : A PNP transistor is connected to the LA5693AM externally to provide a low-saturation voltage regulator. Therefore, ICONT ≈100mA will flow, as starting current, in the VCC range where the output cannot be regulated. Operating Conditions at Ta = -40 to +125°C Parameter Symbol Conditions Ratings Unit Control pin voltage VCONT 6 to 40 Control pin current ICONT 10 Reset output current Reset detection voltage IRES(1) max, IRES(2) max 8 RES(2) : 10kΩ pull-up VS min 4 V mA mA V Operating Characteristics at Ta= -40 to +125°C, VCC=14V, IO=50mA, unless otherwise specified. Parameter Output voltage Symbol Conditions Ratings min typ Line regulation1 VO ΔVOLN1 9V ≤ VCC ≤ 16V 2 10 mV Line regulation2 ΔVOLN2 6V ≤ VCC ≤ 40V 4 30 mV Load regulation ΔVOLD 1mA ≤ IO ≤ 50mA Current dissipation ICC Output noise voltage VNO Temperature coefficient of output voltage Reference voltage ΔVO /∆Ta 4.8 Unit max 30 mV 4.4 6.5 mA 10Hz ≤ f ≤ 100kHz, VCK = 0 150 μV IO = 5mA, –40°C ≤ Ta ≤ +85°C ±0.2 mV/°C VREF 1.13 ‘L’-level CK input voltage VIL ‘H’-level CK input current IIH VCK = 5V ‘L’-level CK input current IIL VORH(1), VCK = 0V 1.18 1.23 2 RES(2) : 10kΩ pull-up VORH(2) ‘L’-level reset output voltage1 VORL(1)1, RES(2) : 10kΩ pull-up ‘L’-level reset output voltage2 VORL(1)1 VORL(1) 2, IRES(1) = IRES(2) = 8mA Reset output delay time V 4 VIH CK input pulse width 5.2 IO = 0 ‘H’-level CK input voltage ‘H’-level reset output voltage 5.0 V V 0.3 0.8 V 0.7 mV μA -1.0 -0.1 4.8 5.0 5.2 V 40 200 mV 0.16 0.8 V VORL(1)2 tCKW VCK = 5V td Ct = 1μF 7.0 10 20 ms μs 3 Watchdog time 1 tWD1 Ct = 1μF (Ta = -40 to +125°C) 25 40 60 ms Watchdog time 2 tWD2 Ct = 1μF (Ta = -40 to +85°C) 25 40 53 ms Watchdog reset time tWR Ct = 1μF 0.1 0.25 0.4 ms Reset hysteresis voltage Vhys VS = 4.5V 100 200 300 mV No.7559-2/7 LA5693AM Package Dimensions Pin Assignment unit : mm 3032D 5.0 5 0.63 4.4 6.4 8 4 0.35 0.15 0.1 (1.5) 1.27 1.7max 1 (0.65) SANYO : MFP8(225mil) Block Diagram No.7559-3/7 LA5693AM Test Circuit RB Sample Application Circuit RB D5135E No.7559-4/7 LA5693AM Note on application 1. For stable operation, place Cin, CO, and TR1 as near to the IC as possible. 2. When used in 0°C or below it, a capacitor of which impedance at high-frequency operation is low and has a good temperature characteristic (such as SANYO OS-CON capacitor or others) should be used to prevent oscillation. 3. Set VS to the output voltage level where the circuit will be reset using external resistors R1 and R2. VS should be set to 4V or greater due to internal circuit operation. 4. CCK must be inserted to cut the high range element of clock noise to prevent it from becoming a reset output noise. 5. For Ct, a capacitor which less varies the capacitance according to the temperature should be used. Timing Chart Note : Edge-triggered at the point indicated by the arrow of CK signal. No.7559-5/7 LA5693AM No.7559-6/7 LA5693AM SANYO Semiconductor Co.,Ltd. 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 Semiconductor Co.,Ltd. products described or contained herein. SANYO Semiconductor Co.,Ltd. strives to supply high-quality high-reliability products, however, any and all semiconductor products fail or malfunction with some probability. It is possible that these probabilistic failures or malfunction could give rise to accidents or events that could endanger human lives, trouble that could give rise to smoke or fire, or accidents 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 Semiconductor Co.,Ltd. products described or contained herein are controlled under any of applicable local export control laws and regulations, such products may require 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 consent of SANYO Semiconductor 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 Semiconductor Co.,Ltd. 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. Upon using the technical information or products described herein, neither warranty nor license shall be granted with regard to intellectual property rights or any other rights of SANYO Semiconductor Co.,Ltd. or any third party. SANYO Semiconductor Co.,Ltd. shall not be liable for any claim or suits with regard to a third party's intellctual property rights which has resulted from the use of the technical information and products mentioned above. This catalog provides information as of July, 2010. Specifications and information herein are subject to change without notice. PS No.7559-7/7