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| 2004.2.4 Ordering number : ENN7714 SANYO Semiconductors DATA SHEET Monolithic Digital IC LB1948M Overview Low saturation voltage drive forward/reverse 12 V motor driver The LB1948M is a two-channel low saturation voltage forward/reverse motor driver IC. It is optimal for motor drive in 12V system products and can drive either two DC motors, one DC motor using parallel connection, or a two-phase bipolar stepping motor with 1-2 phase excitation mode drive. Applications 12V low saturation voltage forward/reverse motor drive Features * * * * * * * * Supports 12V power supply systems Low saturation voltage: VO (sat)=0.5V (typical) at IO=400mA Zero current drawn in standby mode Braking function Supports parallel connection: IOmax=1.6A, VO (sat)=0.6V (typical) at IO= 800mA Built-in spark killer diode Thermal shutdown circuit Miniature package: MFP-10S (6.5 x 5.1mm) Specifications Absolute Maximum Ratings at Ta=25C Parameter Maximum supply voltage Output voltage Input voltage Ground pin source current Allowable power dissipation Operating temperature Storage temperature Symbol VCC max VOUT VIN IGND Pd max1 Pd max2 Topr Tstg Per channel Independent IC Mounted on a circuit board* Conditions Ratings -0.3 to +20 -0.3 to +20 -0.3 to +18 800 350 870 -20 to +85 -40 to +150 Unit V V V mA mW mW C C *: On the stipulated circuit board (114.3 x 76.1 x 1.6tmm, glass epoxy) 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 31004TN (OT) No. 7714-1/6 LB1948M Allowable Operating Ranges at Ta=25C Parameter Supply voltage Input high-level voltage Input low-level voltage Symbol VCC VIH VIL Conditions Ratings 2.5 to 16 1.8 to 10 -0.3 to +0.7 Unit V V V Electrical Characteristics at Ta=25C, VCC=12V Parameter Symbol ICC0 Current drain ICC1 ICC2 Output saturation voltage Input current [Spark Killer Diode] Reverse current Forward voltage IS (leak) VSF IOUT=400mA 30 1.7 A V VO (sat) 1 VO (sat) 2 IIN Conditions IN1, 2, 3, 4=0V (Standby mode) *1 (Forward or reverse mode) *2 (Brake mode) IOUT=200mA (High Side and Low Side) IOUT=400mA (High Side and Low Side) VIN=5V -- -- Ratings min typ 0.1 15 30 0.25 0.50 85 max 10 21 40 0.35 0.75 110 Unit A mA mA V V A *1: IN1/IN2/IN3/IN4=H/L/L/L or L/H/L/L or L/L/H/L or L/L/L/H *2: IN1/IN2/IN3/IN4=H/H/L/L or L/L/H/H Package Dimensions unit : mm 3086B 10 6 0.63 5.0 Pin Assignment VCC IN1 1 10 OUT1 2 9 OUT2 4.4 6.4 IN2 IN3 3 4 LB1948M 8 7 OUT3 OUT4 1.7max 0.1 (1.5) 1 5 0.15 IN4 5 6 GND 0.35 1.0 (0.5) Top view ILB01591 SANYO : MFP10S (225 mil) 1.0 Pd max -- Ta Mounted on a 114.3 x 76.1 x 1.6tmm glass epoxy circuit board Allowable power dissipation, Pd max--W 0.87 0.8 0.6 0.45 0.4 0.35 Independent IC 0.2 0.18 0 -20 0 20 40 60 80 100 ILB01585 Ambient temperature, Ta--C No.7714-2/6 LB1948M Truth Table Input IN1 L L H L H IN2 L L L H H L H L H L L H H IN3 L IN4 L OUT1 OFF OFF H L L OUT2 OFF OFF L H L OFF H L L OFF L H L 2CH Output OUT3 OFF OUT4 OFF 1CH Notes Standby mode Standby mode Forward Reverse Brake Standby mode Forward Reverse Brake Block Diagram VCC 10F 60k IN1 80k OUT1 M OUT2 IN2 60k 80k Control block IN3 80k Thermal shutdown circuit 60k OUT3 M OUT4 60k IN4 80k GND No.7714-3/6 LB1948M Design Documentation * Voltage magnitude relationship There are no restrictions on the magnitude relationships between the voltages applied to VCC and IN1 to IN4. * Parallel connection The LB1948M can be used as a single-channel H-bridge power supply by connecting IN1 to IN3, IN2 to IN4, OUT1 to OUT3, and OUT2 to OUT4 as shown in the figure. (IOmax=1.6A, VO(sat)=0.6V (typical) at IO=800mA) 1 VCC 2 IN1 OUT1 10 M OUT2 9 3 IN2 4 IN3 OUT3 8 OUT4 7 5 IN4 GND 6 * Observe the following points when designing the printed circuit board pattern layout. -- Make the VCC and ground lines as wide and as short as possible to lower the wiring inductance. -- Insert bypass capacitors between VCC and ground mounted as close as possible to the IC. -- Resistors of about 10K must be inserted between the CPU output ports and the IN1 to IN4 pins if the microcontroller and the LB1948M are mounted on different printed circuit boards and the ground potentials differ significantly. No.7714-4/6 LB1948M 40 ICC -- VCC VIN=5V (=IN1 / IN2 or IN3 / IN4) H/H Input current, IIN -- A 400 IIN -- VIN VCC=12V Current drain, ICC -- mA 30 300 20 200 H / L, L / H 10 IN 1t o4 100 0 0 5 10 15 L/L 20 ILB01586 0 0 5 10 15 20 ILB01587 Supply voltage, VCC -- V 0.6 VO(sat) -- IO Input voltage, VIN -- V 40 ICC -- Ta VCC=12V Output saturation voltage, VO(sat) -- V 0.5 VCC=12V Current drain, ICC -- mA (IN1 30 / 2) H /H 0.4 0.3 0.2 g Hi h Si a de nd w Lo Si de 20 H / L, L / 10 H 0.1 0 0 100 200 300 400 500 600 ILB01588 0 --40 --20 0 20 40 60 80 100 120 140 Output current, IO -- mA 0.7 Ambient temperature, Ta -- C ILB01589 VO(sat) -- Ta Output saturation voltage, VO(sat) -- V 0.6 VCC=12V High Side and Low Side 0.5 00 I O=4 mA A 0.4 0m I O=30 0.3 I O=200mA 0.2 IO=100mA 0.1 0 --40 --20 0 20 40 60 80 100 120 140 Ambient temperature, Ta -- C ILB01590 No.7714-5/6 LB1948M 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 expor ted without obtaining the expor t license from the author ities 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 March, 2004. Specifications and information herein are subject to change without notice. PS No.7714-6/6 |
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