Ordering number: EN3948B Monolithic Digital IC LB1837M Low-voltage/Low-saturation Bidirectional Constant-Voltage Regulated Motor Driver Overview Package Dimensions unit: mm 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. 3111-MFP14S [LB1837M] Features . Wide operating voltage range (3.0 to 9.0 V). . Low saturation voltage (sat) = 0.40 V at I = 200 mA. . VConsumes almost no current in standby mode (0.1 µA or less). . Permits setting of bidirectional constant-voltage regulated . value. reference voltage coupled to input. . Built-in Brake function built in. . Compact MFP14S package. O O SANYO : MFP14S Specifications Absolute Maximum Ratings at Ta = 25 °C Parameter Maximum supply voltage Output current Applied input voltage Allowable power dissipation Symbol Conditions Ratings Unit VCC max 10.5 V Im max 250 mA VIN Pd max –0.3 to +10 With board ( 30 x 30 x 1.5 mm3 ) V 800 mW Operating temperature Topr –20 to +80 °C Storage temperature Tstg –40 to +125 °C Allowable Operating Ranges at Ta = 25 °C Parameter Symbol Conditions Ratings Unit Supply voltage VCC 3.0 to 9.0 V Input [H] voltage VIH 3.0 to 9.0 V Input [L] voltage VIL –0.3 to +0.7 V Control voltage VC 0.2 to 6.0 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 Reference voltage ICC3 Vsat1 Vsat2 Vsat3 Vref Output voltage voltage characteristics ∆VO ∆VCC 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 Output voltage current characteristics ∆VO ∆ICC VO = 5 V, VCC = 6 V, IO = 10 to 100 mA ICC1 ICC2 Output saturation voltage Input current Output voltage IIN VO VIN = 5 V Between OUT and GND min 0.07 1.85 typ 0.1 max 10 Unit µA 2 3 mA 3 5 mA 6.5 0.3 0.4 0.10 2.0 9 0.4 0.55 0.15 2.15 mA V V V V 20 mV 50 mV 150 2.7 x VC µA V 90 2.5 x VC Equivalent Circuit Block Diagram (For one channel) Thermal Reference voltage Logic predriver Truth Table Pin Assignment Input Output IN 1/3 IN 2/4 OUT 1/3 OUT 2/4 L L OFF OFF Mode Standby H L H L Constant-voltage regulated forward operation L H L H Constant-voltage regulated reverse operation H H L L Brake 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. Symbol Equivalent Circuit Diagram Pin Function 14 VCC Power supply pin for output and controller. 9 12 GND GND pins for output and controller. Both must be grounded. 1 2 6 7 IN2 IN1 IN3 IN4 8 10 11 13 OUT4 OUT3 OUT1 OUT2 3 Vref Reference voltage (= 2.0 V). 4 5 VC1 VC2 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. 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 µA 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. Output No.3948 -3/5 LB1837M Sample Application Circuit If the outputs oscillate, insert capacitors of 0.001 to 0.1 µF between the outputs. Specified board (30 x 30 x 1.3 mm3 glass epoxy) VO(sat) — IO Output saturation voltage, VO(sat) — V Allowable power dissipation, Pd max — mW Pd max — Ta Ambient temperature, Ta — °C Output current, IO — mA IIN — VIN V — VCC Input current, IIN — µA Output voltage, VO — V No load 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