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Ordering number : EN1210E
Monolithic Digital IC
LB1620
3-Phase DD Motor Driver
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.
Package Dimensions
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 /VHS, NTSC/PAL/SECAM.
SANYO : DIP20H
Specifications Maximum Ratings at Ta=25C
Parameter Maximum supply voltage Maximum load current Allowable power dissipation Operating temperature Storage temperature Symbol VCC1 VCC2 IL Pd max Topr Tstg Ideal heat dissipation Without heat sink Conditions Ratings 28 14 1.5 15 3 -20 to +75 -55 to +150 Unit V V A W W C C
Allowable Operating Condition at Ta=25C
Parameter Supply voltage Symbol VCC1 VCC2 Conditions Ratings 8.5 to 26.4 8.5 to 14.0 Unit V V
Pin Assignment
Top view
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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=25C, VCC1=12V, VCC2=9V
Parameter Current drain Saturation voltage Symbol ICC off ICC dri VO(sat)1 VO(sat)2 In-phase voltage range Motor forward rotation input voltage range Motor reverse rotation input voltage range Interphase current variation Speed control voltage (off) Speed control voltage (on) Vc1 Vc2 Vc3 Closed loop voltage gain Input sensitivity Driver stage Output stage Rf=0, Rs=0, FC pinGND current=5A Rf=0, Rs=0, FC pinGND current=0.5mA Rf=1, Rs=100, VRf=100mV Rf=1, Rs=100, IL=100mA 4.6 0.44 20 V A/V mV 4.5 V -25 -25 0 0 +25 +25 4.0 % % V 0 0.3 V Conditions Vc=0V, Vstop=2V, ICC1+ICC2 Vc=7V, Vstop=2V, ICC1+ICC2 IO=0.58A, VCC1=9.6V, VOsink+VOsource IO=1A, VCC1=18V, VOsink+VOsource 2.0 2.0 VCC2-2.5 VCC2 V V 5.0 V Ratings min typ 12 22 max 18 40 2.1 Unit mA mA V
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 H H L L H L Input VW H L L H L H L 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 : , capacitance : F)
Saturation Voltage - ICO
Rf Pin Voltage - VC
Saturation voltage - mV
Output collector current, ICO - mA
Rf pin voltage - mV
Control voltage, VC - V
Supply voltage, VCC - V
Allowable power dissipation, Pd max - W
Quiescent current, ICC - mA
Ambient temperature, Ta - C
No.1210-3/6
LB1620 Pin Description
Pin name UIN1, UIN2 VIN1, VIN2 WIN1, WIN2 UOUT VOUT WOUT VCC1 VCC2 Rf CD Pin No. 13, 14 15, 16 17, 18 3 2 1 4 19 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=1, 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=1, 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.
(Stabilization) Power supply for Hall element Forward/reverse select Control signal input 2
20
10
STOP
9
FCU FCV FCW
5 6 7
VC
11
GND
8
F/RC
12
Sample Application Circuit
Unit (resistance : , 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 0.3 to 5. *2. Cf is for stopping oscillation and is determined by motor characteristic and F/V converter-included closed loop characteristic. Cf should be 0.022F to 0.047F. *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.1210-5/6
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

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