Ordering number : EN1210E Monolithic Digital IC LB1620 3-Phase DD Motor Driver Overview Package Dimensions The LB1620 is a 3-phase DD motor driver IC especially suited for use in VCR capstan motor drive, drum motor drive, and floppy disk motor drive applications. unit: mm 3037A-DIP20H [LB1620] Functions and Features • 3-phase motor driver. • Capable of controlling drive current. • On-chip 3-phase control signal generator. • Phase/speed control pin. • Forward/reverse rotation control pin. • Applicable to β/VHS, NTSC/PAL/SECAM. SANYO : DIP20H Specifications Maximum Ratings at Ta=25°C Parameter Maximum supply voltage Symbol Conditions Ratings Unit VCC1 28 V VCC2 14 V 1.5 A 15 W Maximum load current IL Allowable power dissipation Pd max 3 W Operating temperature Topr –20 to +75 °C Storage temperature Tstg –55 to +150 °C Ideal heat dissipation Without heat sink Allowable Operating Condition at Ta=25°C Parameter Supply voltage Symbol Conditions Ratings Unit VCC1 8.5 to 26.4 V VCC2 8.5 to 14.0 V Pin Assignment Top view SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN O2097HA (KT)/8037KI/6115KI/7153KI/0252KI No.1210-1/6 LB1620 Electrical Characteristics at Ta=25°C, VCC1=12V, VCC2=9V Parameter Symbol Current drain Saturation voltage Conditions Ratings min typ Unit max ICC off Vc=0V, Vstop=2V, ICC1+ICC2 12 18 mA ICC dri Vc=7V, Vstop=2V, ICC1+ICC2 22 40 mA VO(sat)1 IO=0.58A, VCC1=9.6V, 2.1 V 5.0 V VOsink+VOsource VO(sat)2 IO=1A, VCC1=18V, VOsink+VOsource In-phase voltage range 2.0 VCC2–2.5 V Motor forward rotation 2.0 VCC2 V 0 0.3 V input voltage range Motor reverse rotation input voltage range Interphase current variation Driver stage –25 0 +25 % Output stage –25 0 +25 % 4.0 V Rf=0Ω, Rs=0Ω, Speed control voltage (off) Vc1 Speed control voltage (on) Vc2 Rf=0Ω, Rs=0Ω, Vc3 Rf=1Ω, Rs=100Ω, VRf=100mV FC pin→GND current=5µA 4.5 V FC pin→GND current=0.5mA Rf=1Ω, Rs=100Ω, IL=100mA Closed loop voltage gain Input sensitivity 4.6 V 0.44 A/V 20 mV LB1620 Truth Table Source 1 2 3 4 5 6 Sink W phase → V phase V phase → W phase W phase → U phase U phase → W phase V phase → W phase W phase → V phase U phase → V phase V phase → U phase V phase → U phase U phase → V phase U phase → W phase W phase → U phase U Input V W H H L H L L L L H L H L H L H L H H Forward/Reverse Control (FRC) L H L H L H L H L H L H Input : "H" : Each phase input (1) is more than 0.2V higher than each phase input (2). "L" : Each phase input (1) is more than 0.2V lower than each phase input (2). Forward/reverse control : "H" : 2.0 to VCC2 : "L" : 0 to 0.3V No.1210-2/6 LB1620 Equivalent Circuit Block Diagram and Peripheral Circuit Feedback resistor Forward/reverse control Unit (resistance : Ω, capacitance : F) Rf Pin Voltage – VC Rf pin voltage – mV Saturation voltage – mV Saturation Voltage – ICO Control voltage, VC – V Quiescent current, ICC – mA Allowable power dissipation, Pd max – W Output collector current, ICO – mA Supply voltage, VCC – V Ambient temperature, Ta – °C No.1210-3/6 LB1620 Pin Description Pin name UIN1, UIN2 VIN1, VIN2 WIN1, WIN2 UOUT VOUT WOUT VCC1 Pin No. 13, 14 15, 16 17, 18 3 2 1 4 VCC2 19 Rf 20 CD 10 STOP 9 FCU FCV FCW 5 6 7 VC 11 GND 8 F/RC 12 Function U phase Hall element input pin, "H" of logic : VIN1>VIN2 V phase Hall element input pin, "H" of logic : VIN1>VIN2 W phase Hall element input pin, "H" of logic : VIN1>VIN2 U phase output pin V phase output pin W phase output pin Power supply pin for applying output Power supply pin for applying voltage to each section other than output section. The control point of control voltage is at approximately 1/2 of this voltage. This voltage must be stabilized to be free from ripple, noise, etc. Output current detect pin. By connecting Rf across this pin and GND pin, output current is detected as voltage. Pin for fetching current (voltage) detected with Rf. By connecting a resistor across CD pin and Rf, speed control start voltage can be fine-adjusted. Overcurrent protection pin. Voltage being lower than that on CD pin is taken to be identical to overcurrent flow, causing output to be cut off. Off-state is held. For example, if STOP pin is set to 1.5V for Rf=1Ω, approximately 1.5A or more flows at output, causing output to be cut off. Frequency characteristic compensation pin. Closed loop oscillation in current-controlled system (including motor, F/V converter) is stopped. Speed/phase control pin. Control starts at approximately 1/2 of VCC2. Control is of current-controlled type that controls output current. For Rf=1Ω, LB1620 closed loop has gm of 0.44A/V typ, which can be adjusted by varying Rf. GND for other than output. Minimun potential of output transistor is at Rf pin. Forward/reverse rotation control pin. By setting this pin to "H" (more than 2V) / "L" (less than 0.3V), truth value is changed to perform forward/reverse rotation. Sample Application Circuit (Stabilization) Power supply for Hall element Forward/reverse select Control signal input 2 Unit (resistance : Ω, capacitance : F) No.1210-4/6 LB1620 Notes on Sample Application Circuit *1. Rf is determined by starting torque required for coil impedance F/V conversion voltage (control input). Rf should be 0.3Ω to 5Ω. *2. Cf is for stopping oscillation and is determined by motor characteristic and F/V converter-included closed loop characteristic. Cf should be 0.022µF to 0.047µF. *3. For how to connect Hall element, either parallel connection or series connection is available as long as input voltage is within the range specified. Timing Chart Forward/reverse control "L" pin 12 From truth table Forward/reverse control "H" pin 12 From truth table No.1210-5/6 LB1620 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 lose. Anyone purchasing any products described or contained herein for an above-mentioned use shall: 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: Not impose any responsibilty 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, 1997. Specifications and information herein are subject to change without notice. No.1210-6/6