LB1620

LB1620 SANYO | Alldatasheet

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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 Overview 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. 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 b/VHS, NTSC/PAL/SECAM. Package Dimensions unit: mm 3037A-DIP20H [LB1620] SANYO : DIP20H Specifications Maximum Ratings at Ta=25°C Parameter Symbol Conditions Ratings Unit Maximum supply voltage V CC 12 8 V VCC 21 4 V Maximum load current I L 1.5 A Allowable power dissipation Pd max Ideal heat dissipation 15 W Without heat sink 3 W Operating temperature Topr –20 to +75 °C Storage temperature Tstg –55 to +150 °C Allowable Operating Conditionat Ta=25°C Parameter Symbol Conditions Ratings Unit Supply voltage V CC 1 8.5 to 26.4 V VCC 2 8.5 to 14.0 V Pin Assignment Top view

Electrical Characteristicsat Ta=25°C, VCC 1=12V, VCC 2=9V Parameter Symbol Conditions Ratings min typ max Unit Current drain ICC off Vc=0V, Vstop=2V, ICC 1+ICC 2 12 18 mA ICC dri Vc=7V, Vstop=2V, ICC 1+ICC 2 22 40 mA Saturation voltage VO (sat)1 IO =0.58A, VCC 1=9.6V, 2.1 V VO sink+VO source VO (sat)2 IO =1A, VCC 1=18V, 5.0 V VO sink+VO source In-phase voltage range 2.0 VCC 2–2.5 V Motor forward rotation 2.0 VCC 2 V input voltage range Motor reverse rotation 0 0.3 V input voltage range Interphase current variation Driver stage –25 0 +25 % Output stage –25 0 +25 % Speed control voltage (off)Vc1 R f=0Ω , Rs=0Ω , 4.0 V FC pinfi GND current=5µA Speed control voltage (on) Vc2 R f=0Ω , Rs=0Ω , 4.5 V FC pinfi GND current=0.5mA Vc3 R f=1Ω , Rs=100Ω , VRf=100mV 4.6 V Closed loop voltage gain R f=1Ω , Rs=100Ω , IL=100mA 0.44 A/V Input sensitivity 20 mV LB1620 Truth Table LB1620 No.1210-2/6 W phase fi V phase V phase fi W phase L Source Sink Forward/Reverse Control (FRC) Input U H H L W phase fi U phase U phase fi W phase L H2 H L L V phase fi W phase W phase fi V phase L H3 L L H U phase fi V phase V phase fi U phase L H4 L H L V phase fi U phase U phase fi V phase L H5 H L H U phase fi W phase W phase fi U phase L H6 L H H V W 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 VCC 2 : "L" : 0 to 0.3V

No.1210-3/6 Equivalent Circuit Block Diagram and Peripheral Circuit Forward/reverse control Output collector current, ICO – mA Saturation voltage – mV Supply voltage, VCC – V Quiescent current, ICC – mA Ambient temperature, Ta – °C Allowable power dissipation, Pd max – W Saturation Voltage – ICO Control voltage, VC – V R fpin voltage – mV R fPin Voltage – VC Feedback resistor Unit (resistance : Ω , capacitance : F)

No.1210-4/6 Pin Description Pin name Pin No. Function U IN1, UIN2 VIN1, VIN2 W IN1, WIN2 13, 14 15, 16 17, 18 U phase Hall element input pin, "H" of logic : V IN1>VIN2 V phase Hall element input pin, "H" of logic : VIN1>V IN2 W phase Hall element input pin, "H" of logic : VIN1>VIN2 U OUT VOUT W OUT U phase output pin V phase output pin W phase output pin V CC 1 4 Power supply pin for applying output VCC 2 19 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. R f 20 Output current detect pin. By connecting Rfacross this pin and GND pin, output current is detected as voltage. C D 10 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. STOP 9 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 R f=1Ω , approximately 1.5A or more flows at output, causing output to be cut off. FCU FCV FCW Frequency characteristic compensation pin. Closed loop oscillation in current-controlled system (including motor, F/V converter) is stopped. V C 11 Speed/phase control pin. Control starts at approximately 1/2 of VCC 2. Control is of current-controlled type that controls output current. For R f=1Ω , LB1620 closed loop has gm of 0.44A/V typ, which can be adjusted by varying Rf. GND 8 GND for other than output. Minimun potential of output transistor is at Rfpin. F/RC 12 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 Unit (resistance : Ω , capacitance : F) (Stabilization) Power supply for Hall element Forward/reverse select Control signal input 2

No.1210-5/6 Notes on Sample Application Circuit *1. Rfis determined by starting torque required for coil impedance F/V conversion voltage (control input). Rfshould be 0.3Ω to 5Ω . *2. Cfis for stopping oscillation and is determined by motor characteristic and F/V converter-included closed loop characteristic. Cfshould 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 Forward/reverse control "H" pin 12 From truth table From truth table

No.1210-6/6 N o products described or contained herein are intended for use in surgical im plants, life-support system s, aerospace equipm ent, nuclear pow er control system s, vehicles, disaster/crim e-prevention equipm ent and the like, the failure of w hich m ay directly or indirectly cause injury, death or property lose. Anyone purchasing any products described or contained herein for an above-m entioned use shall: Accept full responsibility and indem nify and defend SAN YO ELEC TR IC C O ., LTD ., its affiliates, subsidiaries and distributors and all their officers and em ployees, jointly and severally, against any and all claim s and litigation and all dam ages, cost and expenses associated w ith such use: N ot im pose any responsibilty for any fault or negligence w hich m ay be cited in any such claim or litigation on SAN YO ELEC TR IC C O ., LTD ., its affiliates, subsidiaries and distributors or any of their officers and em ployees jointly or severally. Inform ation (including circuit diagram s and circuit param eters) herein is for exam ple only; it is not guarant- eed for volum e production. SAN YO believes inform ation herein is accurate and reliable, but no guarantees are m ade or im plied regarding its use or any infringem ents of intellectual property rights or other rights of third parties. This catalog provides inform ation as of O ctober, 1997. Specifications and inform ation herein are subject to change w ithout notice.