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| Ordering number: EN 4528B Monolithic Digital IC LB1643 Forward/Reverse Motor Driver with Brake Overview The LB1643 is a forward/reverse motor driver IC. The direction and brake functions are controlled from a single input, and the output voltages can be set by resistors. Further, the output voltage has 3 modes, full, high-level and low-level voltage modes. The output voltage can be controlled from a single input and a microcontroller interface. Package Dimensions unit : mm 3043A-SIP10 [LB1643] Features . Single-input forward, reverse and brake functions . Output voltage can be set using resistors . Single-input full-drive, high-level drive and low-level drive . select function interface . Microcontroller absorption components . Built-in surge-current circuit voltage . Built-in referenceprotection circuit Built-in thermal Specifications Absolute Maximum Ratings at Ta = 25 C Parameter Maximum supply voltage Input voltage Output current Allowable power dissipation Operating temperature Storage temperature Symbol VCC max VIN IOUT Pd max Topr Tstg VCC > VIN Conditions Ratings 18 -0.3 to +6 1.6 1.2 -25 to +75 -55 to +125 SANYO : SIP10 Unit V V A W C C Allowable Operating Ranges at Ta = 25 C Parameter Supply voltage ranges Forward-reverse direction prohibit time Symbol VCC1 VCC2 t off VCC1 ^ VCC2 Conditions Ratings 8.0 to 18 5 to 18 ^20 Unit V V s SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN 63098HA(II)/D2293TS B8-0434 No.4528-1/5 LB1643 Electrical Characteristics at Ta = 25 C, VCC = 12 V Parameter Input low-level voltage Input high-level voltage Input mid-level voltage Input impedance Current drain Output voltages Output leakage current Saturation voltages (upper) Saturation voltages (lower) Reference voltage Reference voltage load characteristics Control to output gain Thermal shutdown temperature TTSD Symbol VINL VINH VINM ZIN ICC VOUT1 VOUT2 IOL Vsat11 Vsat12 Vsat21 Vsat22 Vref Vref Iref Conditions min 0 4.2 2.0 typ max 1.0 6.0 3.0 10 5.4 5.4 1.0 2.2 2.3 0.5 0.65 6.8 0.1 2.4 Unit V V V k mA V V mA V V V V V V/mA Times C RL = 60 , VCH = 2.5 V, VIN1 = 2.5 V, VIN2 = 0 V RL = 60 , VCH = 2.5 V, VIN1 = 2.5 V, VIN2 = 5.0 V RL = VCC = 12 V, IOUT = 300 mA VCC = 12 V, IOUT = 500 mA VCC = 12 V, IOUT = 300 mA VCC = 12 V, IOUT = 500 mA Iref = -2.0 to 0 mA VOUT/VCH, VOUT/VCL VCH = 2.5 V, VCL = 2.5 V, RL = 60 See note. 4.4 4.4 6.0 75 5.5 4.95 4.95 0.01 1.9 1.9 0.25 0.4 6.35 0.05 1.5 150 1.9 180 Note: Design target value only (not measured). Pin Assignment Truth Table Operation IN1 H M L H M L H M L IN2 H H H M M M L L L OUT1 L L L OFF OFF OFF FULL 2VCH 2VCL OUT2 FULL 2VCH 2VCL OFF OFF OFF LOW LOW LOW Forward (reverse) Brake Reverse (forward) Input levels are .V .V .V H M L ^ 4.2 V = 2.0 to 3.0 V % 1.0 V Allowable power dissipation, Pd max - mW Input Output voltage Pd max - Ta Ambient temperature, Ta -C When IN1 and IN2 are open, they take on a voltage of 2.5 V. Operation equivalent to LB1641. No. 4528-2/5 LB1643 Internal Equivalent Circuit Pre-driver Logic circuit Sample Application Circuit Motor Microcontroller ports Usage Notes 1. 2. 3. 4. 5. 6. Use a microcontroller with CMOS output ports for hight-level, low-level and open-circuit conditions. It is recommended that R1, R2 and R3 total approximately 60 k. The input voltage for IN1 and IN2 should be 0 to 6 V to ensure the output voltage does not cause incorrect operation when a negative voltage is applied. Furthermore, IN1 and IN2 voltages should not be applied if the VCC supply is not applied. To avoid occurrences where both the upper and lower transistors are ON simultaneously, make sure IN1 or IN2 is open for a period of tens of ms before switching control to the opposite device. Connect a 20 F or larger capacitor between VCC and GND. A large current of several hundred mA flows in the motor circuits when the motor is being driven. Accordingly, the output current line and the input circuit should be wired so that they do not have a common impedance. Reference voltage circuit Thermal protection circuit PS No. 4528-3/5 LB1643 Pin Description Pin No. 1 Pin name GND Equivalent circuit . . . Description Power and signal ground 3 IN1 Output voltage control input terminal VM 2.5 V when input is open. 4 IN2 . . Forward, reverse and brake control input terminal VM 2.5 V when input is open. 5 VCL . Output voltage set terminal 6 VCH . Output voltage set terminal 7 Vref . Reference voltage output. Vref = 6.35 V 8 9 VCC1 VCC2 . . Signal voltage supply Power voltage supply No. 4528-4/5 LB1643 Pin No. Pin name Equivalent circuit Description 2 OUT1 . 10 OUT2 Motor coil connection terminals 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, 1998. Specifications and information herein are subject to change without notice. PS No. 4528-5/5 |
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