lb1661 Sanyo Semiconductor Corporation, lb1661 Datasheet

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lb1661

Manufacturer Part Number
lb1661
Description
2-phase Unipolar Brushless Motor Drivers
Manufacturer
Sanyo Semiconductor Corporation
Datasheet

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Applications
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Features and Functions
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Ordering number: EN2551C
2-phase unipolar brushless motor (ex. DC brushless fan
motor) drivers
Output current : 1.5 A
On-chip output protect zener diodes : 60 V (LB1660N,
1664N)
Output stage withstand voltage: 85 V (LB1661, 1665)
On-chip hall input amplifier
On-chip protector against lock
With lock detect pin
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
2-Phase Unipolar Brushless Motor Drivers
LB1660N, 1661, 1664N, 1665
Package Dimensions
unit : mm
3001B-DIP8
unit : mm
3054A-DIP16F
O1096HA(II) 7037KI/6227TA No.2251-1/9
[LB1660N, 1661]
[LB1664N, 1665]
Monolithic Digital IC
SANYO : DIP16F
SANYO : DIP8

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lb1661 Summary of contents

Page 1

... Features and Functions . Output current : 1 On-chip output protect zener diodes : 60 V (LB1660N, 1664N) . Output stage withstand voltage (LB1661, 1665) . On-chip hall input amplifier . On-chip protector against lock . With lock detect pin SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN ...

Page 2

... Output stage zener diode Package DIP8 (Pd = 1.2 W) DIP16F ( recommended to use the LB1661, 1665 in the following cases capacitor is connected across the output and GND and the back emf is more than V 2 External zener diodes are connected to absorb the kickback voltage. Pin Assignments ...

Page 3

... Equivalent Circuit Block Diagram and Sample Application Circuit The LB1661, LB1665 have no output stage protect zener diode. [LB1660N] Absolute Maximum Ratings 25°C Parameter Maximum input current Output supply voltage Maximum output current Output negative current RD flow-in current RD supply voltage Allowable power dissipation ...

Page 4

... Amp input bias current RD output saturation voltage V RD Comparator input bias current V Comparator input threshold voltage V [LB1661] Absolute Maximum Ratings 25°C Parameter Maximum input current Output supply voltage Maximum output current RD flow-in current RD supply voltage Allowable power dissipation Operating temperature Storage temperature Allowable Operating Conditions 25° ...

Page 5

Absolute Maximum Ratings 25°C Parameter Maximum input current Output supply voltage Maximum output current Output negative current RD flow-in current RD supply voltage Allowable power dissipation Operating temperature Storage temperature Allowable Operating Conditions ...

Page 6

Electrical Characteristics 25°C Parameter Symbol Output limit voltage 1 V Output limit voltage Output saturation voltage input voltage IN Amp input offset voltage Amp input bias current Comparator input ...

Page 7

... When the kickback voltage induced motor coil is absorbed by the zener diode across collector and base of the output transistor, this interval of time during which the transistor is turned on is used for discharge pulses. Therefore, the LB1661,1665 or LB1660N, 1664N use external zener diodes and capacitors, discharge occurs with pulses of 1 only and V ...

Page 8

... CR pin can be also used to provide on-off control.) V (sat) – Output current, I LB1660N, 1661, 1664N, 1665 Generation of discharge pulse V (LB1660N, 1664N – -0.3V (LB1661, 1665), until the normal IN V – Current drain, I – – R Resistance, R – No.2551-8/9 ...

Page 9

Timing Chart Start 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, ...

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