Ordering number: EN4996 Monolithic Digital IC LB1840M Low-voltage/Low-saturation Bidirectional Variable Constant-voltage Motor Driver Overview Package Dimensions The LB1840M is a low-voltage, low-saturation, three-input type two-channel bidirectional motor driver that permits switching between constant-voltage regulated output and saturated output. The design is ideal for a two-phase bipolar driver for stepping motors. unit: mm 3111-MFP14S [LB1840M] Features . Wide operating voltage range (3.0 to 9.0 V). . Low saturation voltage = 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. type that is ideal for a two-phase bipolar driver. . Three-input Permits switching between constant-voltage regulated output saturated output. . and Built in reference voltage coupled to input. . Compact MFP-14S package. O(sat) 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 × 30 × 1.5 mm3 ) V 800 mW Operating temperature Topr –20 to +80 °C Storage temperature Tstg –40 to +150 °C Allowable Operating Ranges at Ta = 25 °C Parameter Symbol Conditions Ratings Unit Supply voltage VCC 3.0 to 9.0 V IN pin high level voltage VINH 3.0 to 9.0 V IN pin low level voltage VINL –0.3 to +0.7 V 0.2 to 6.0 V Control voltage VC VM pin high level voltage VMH VCC – 0.3 to VCC V VM pin low level voltage VML –0.3 to VCC–2.5 V SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN O1596HA(II) No.4996-1/5 LB1840M Electrical Characteristics at Ta = 25 °C, VCC = 6 V Parameter Symbol Supply current Output saturation voltage max Unit During standby 0.1 10 µA 3.5 5.0 mA 4.5 6.5 mA 0.30 0.40 V ICC2 During bidirectional operation (for two channels): during control, load open during saturation, load open Vsat1 IO = 100 mA (upper side + lower side) Vsat2 IO = 200 mA (upper side + lower side) 0.40 0.55 V IO = 200 mA (lower side) 0.07 0.10 0.15 V IVref = 1 mA 1.85 2.0 2.15 V Output voltage voltage characteristics ∆VO ∆VCC VO = 5 V, VCC = 5.5 to 9 V, IO = 100 mA Output voltage current characteristics ∆VO ∆IO VO = 5 V, VCC = 6 V, IO = 10 to 100 mA Output voltage typ ICC0 Vref Input current min ICC1 VOsat3 Reference voltage Conditions 20 mV 50 mV IIN VIN = 5 V 90 150 µA IVM VM = GND 210 300 µA VO Between OUT and GND 2.65 × VC V 2.45 × VC Equivalent Circuit Block Diagram (For one channel) Thermal Reference voltage Logic predriver Pin Assignment Note: Both GND pins must be grounded. Top view No.4996 -2/5 LB1840M Truth Table Input Output Mode ENA IN 1/2 VM OUT 1/3 OUT 2/4 L — — OFF OFF H L H H L Constant-voltage regulated forward operation H L L H L Saturated forward operation H H H L H Constant-voltage regulated reverse operation H H L L H Saturated reverse operation Standby The constant-voltage regulated output VO (= voltage between H side output and GND) is controlled by VO = 2.5 × VC. The output is in the saturated state when the VC input range is 0.2 to 6 V and VO ^ VCC. Pin Functions Pin No. Symbol 14 VCC Equivalent Circuit Diagram Power supply pin for output and controller. Pin Function 9 12 GND GND pins for output and controller. Both must be grounded. 3 6 IN2 IN1 Input pins that determine the excitation of the outputs. IN1 control outputs OUT1 and OUT2; IN2 control outputs OUT3 and OUT4. L: –0.3 to +0.7 V or open H: 3.0 to 9.0 V There are no limitations on the magnitude relationships between the VCC and VIN supply voltages. 8 10 11 13 OUT4 OUT3 OUT1 OUT2 4 Vref Output pins. Have built-in spark killer diodes. Reference voltage (= 2.0 V). Continued on next page. No.4996 -3/5 LB1840M Continued from preceding page. Pin No. Symbol 5 VC Equivalent Circuit Diagram Pin Function Output 2 ENA 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 × VC. There are no limitations on the magnitude relationships between the VCC and VC supply voltages. Standby/drive control input pin. Current drain in standby mode is 10 µA or less. L: –0.3 to + 0.7 V or open H: 3.0 to 9.0 V There are no limitation on the magnitude relationships between VCC and VENA supply voltage. 7 VM Control input pin for switching between constant voltage output and saturated output. L: –0.3 to VCC − 2.5 V (saturated output) H: VCC − 0.3 to VCC or open (constant-voltage regulated output) Sample Application Circuit Stepping motor If the outputs oscillate, insert capacitors of 0.001 to 0.1 µF between the outputs. No.4996 -4/5 Specified board (30 × 30 × 1.5 mm3 glass epoxy) Output saturation voltage, VO(sat) — V Allowable power dissipation, Pd max — mW LB1840M Output current, IO — mA Ambient temperature, Ta — °C Input current, IIN — µA Output voltage, VO — V No load No load Input voltage, VIN — V Supply voltage, VCC — V 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 October, 1996. Specifications and information herein are subject to change without notice. No.4996 -5/5