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| Ordering number: EN3948B Monolithic Digital IC LB1837M Low-voltage/Low-saturation Bidirectional Constant-Voltage Regulated Motor Driver Overview The LB1837M is a low-voltage, low-saturation, two-channel motor driver with a bidirectional braking function that provides constant-voltage regulated output for bidirectional operation. The design of the LB1837M is ideal for video equipment, cameras, and other portable equipment. Package Dimensions unit: mm 3111-MFP14S [LB1837M] Features . Wide operating voltage range (3.0 to 9.0 V). . Low saturation voltage 0.40 V at = 200 . V (sat) = almost no Icurrent inmA. mode Consumes standby (0.1 A or less). . Permits setting of bidirectional constant-voltage regulated . value. reference voltage coupled to input. . Built-infunction built in. . Brake MFP14S package. Compact O O SANYO : MFP14S Specifications Absolute Maximum Ratings at Ta = 25 C Parameter Maximum supply voltage Output current Applied input voltage Allowable power dissipation Operating temperature Storage temperature Symbol VCC max Im max VIN Pd max Topr Tstg With board ( 30 x 30 x 1.5 mm3 ) Conditions Ratings 10.5 250 -0.3 to +10 800 -20 to +80 -40 to +125 Unit V mA V mW C C Allowable Operating Ranges at Ta = 25 C Parameter Supply voltage Input [H] voltage Input [L] voltage Control voltage Symbol VCC VIH VIL VC Conditions Ratings 3.0 to 9.0 3.0 to 9.0 -0.3 to +0.7 0.2 to 6.0 Unit V V V V SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN 61295HA(II) No.3948-1/5 LB1837M Electrical Characteristics at Ta = 25 C, VCC = 6 V Parameter Supply current Symbol ICC0 ICC1 ICC2 Output saturation voltage ICC3 Vsat1 Vsat2 Vsat3 Vref VO VCC VO ICC IIN VO Conditions During standby (For one channel) During bidirectional operation during control, load open (For one channel) During bidirectional operation during saturation, load open During braking (for one channel) IO = 100 mA (upper side + lower side) IO = 200 mA (upper side + lower side) IO = 200 mA (lower side) Ivref = 1 mA VO = 5 V, VCC = 5.5 to 9 V, IO = 100 mA VO = 5 V, VCC = 6 V, IO = 10 to 100 mA VIN = 5 V Between OUT and GND 90 2.5 x VC min typ 0.1 2 3 6.5 0.3 0.4 0.10 2.0 max 10 3 5 9 0.4 0.55 0.15 2.15 20 50 150 2.7 x VC Unit A mA mA mA V V V V mV mV A V Reference voltage Output voltage voltage characteristics Output voltage current characteristics Input current Output voltage 0.07 1.85 Equivalent Circuit Block Diagram (For one channel) Thermal Reference voltage Logic predriver Truth Table Input IN 1/3 L H IN 2/4 L L OFF H Output OUT 1/3 OUT 2/4 OFF L Mode Standby Constant-voltage regulated forward operation Constant-voltage regulated reverse operation Brake Pin Assignment L H H H L L H L The constant-voltage regulated output VO (= voltage between H side output and GND) is controlled by 2.5 x VC. The output is in the saturated state when the VC input range is 0.2 to 6 V and VO ^ VCC. Note: Both GND pins must be grounded. No.3948 -2/5 LB1837M Pin Functions Pin No. 14 9 12 1 2 6 7 Symbol VCC GND IN2 IN1 IN3 IN4 Equivalent Circuit Diagram Pin Function Power supply pin for output and controller. GND pins for output and controller. Both must be grounded. Input pins that determine the excitation of the outputs. IN1 and IN2 control outputs OUT1 and OUT2; IN3 and IN4 control outputs OUT3 and OUT4. When inputs IN1 through IN4 are all low or open, the device goes into standby mode and current consumption drops to 10 A or less. L: -0.3 to +0.7 V H: 3.0 to 9.0 V There are no limitations on the magnitude relationships between the VCC and VIN supply voltages. Output pins. Have built-in spark killer diodes. Braking provides short braking that turns on the lower transistor. 8 10 11 13 OUT4 OUT3 OUT1 OUT2 3 Vref Reference voltage (= 2.0 V). 4 5 VC1 VC2 Output Input pins that determine the constantvoltage regulated output level. The constant-voltage regulated output VO (= voltage between H side output and GND) is controlled by VO = 2.5 x VC. There are no limitations on the magnitude relationships between the VCC, VC1 and VC2 supply voltages. No.3948 -3/5 LB1837M Sample Application Circuit If the outputs oscillate, insert capacitors of 0.001 to 0.1 F between the outputs. Pd max -- Ta Allowable power dissipation, Pd max -- mW Output saturation voltage, VO(sat) -- V VO(sat) -- IO Specified board (30 x 30 x 1.3 mm3 glass epoxy) Ambient temperature, Ta -- C Output current, IO -- mA IIN -- VIN V -- VCC No load Input current, IIN -- A Output voltage, VO -- V No load Input voltage, VIN -- V Supply voltage, VCC -- V No.3948 -4/5 LB1837M No products described or contained herein are intended for use in surgical implants, life-support systems, aerospace equipment, nuclear power control systems, vehicles, disaster/crime-prevention equipment and the like, the failure of which may directly or indirectly cause injury, death or property loss. Anyone purchasing any products described or contained herein for an above-mentioned use shall: 1 Accept full responsibility and indemnify and defend SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors and all their officers and employees, jointly and severally, against any and all claims and litigation and all damages, cost and expenses associated with such use: 2 Not impose any responsibility for any fault or negligence which may be cited in any such claim or litigation on SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors or any of their officers and employees jointly or severally. 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 June, 1995. Specifications and information herein are subject to change without notice. No.3948 -5/5 |
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