Document
Ordering number: EN2551C
Monolithic Digital IC
LB1660N, 1661, 1664N, 1665 2-Phase Unipolar Brushless Motor Drivers
Applications
Package Dimensions
unit : mm
. 2-phase unipolar brushless motor (ex. DC brushless fan
motor) drivers
3001B-DIP8
[LB1661N, 1661]
Features and Functions
. Output current : 1.5 A . On-chip output protect zener diodes : 60 V (LB1660N, . 1664N) stage withstand voltage: 85 V (LB1661, 1665) . Output On-chip hall input amplifier . On-chip protector against lock . With lock detect pin
SANYO : DIP8
unit : mm
3054A-DIP16F
[LB1664N, 1665]
SANYO : DIP16F
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
O1096HA(II) 7037KI/6227TA No.2251-1/9
LB1660N, 1661, 1664N, 1665
Classification
The LB1660 series are classified by the package and whether the on-chip output stage zener diode is used or not, as follows.
Output stage zener diode With (VZ = 59 V) Without (Vor = 85 V) Package DIP8 (Pd = 1.2 W) DIP16F (Pd = 2.0 W) LB1660N LB1664N LB1661 LB1665
It is recommended to use the LB1661, 1665 in the following cases. 1 A capacitor is connected across the output and GND and the back emf is more than VZ = 59 V 2 External zener diodes are connected to absorb the kickback voltage.
Pin Assignments
Top view
Truth Table
IN+ H L H L IN− L H L H CR L L H H OUT1 H L H H OUT2 L H H H
No.2551-2/9
LB1660N, 1661, 1664N, 1665
Equivalent Circuit Block Diagram and Sample Application Circuit
The LB1661, LB1665 have no output stage protect zener diode.
[LB1660N] Absolute Maximum Ratings at Ta = 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 Symbol ICC max VO max IO max IOM IRD VRD Pd max Topr Tstg t % 20 µs t % 20 ms Conditions Ratings 200 Internal 1.5 −50 5 30 1.2 −30 to +80 −55 to +125 Unit mA V A mA mA V W °C °C
Allowable Operating Conditions at Ta = 25°C
Parameter Input current range Common-mode input voltage range Symbol ICC VICM Conditions Ratings 7.0 to 50.0 0 to VIN-1.5 Unit mA V
No.2551-3/9
LB1660N, 1661, 1664N, 1665
Electrical Characteristics at Ta = 25°C
Parameter Output limit voltage Output saturation voltage VIN input voltage Amp input offset voltage Amp input bias current RD output saturation voltage Comparator input bias current Comparator input threshold voltage Symbol VOLM VO (sat)1 VO (sat)2 VO (sat)3 VIN Voff IBA VRD (sat) IBC VTH 1 VTH 2 Conditions IO = 1.0 A IO = 0.5 A IO = 1.0 A IO = 1.5 A ICC = 7.0 mA min 56 typ 59 0.95 1.15 1.40 6.7 0 max 63 1.20 1.50 2.00 7.0 +7 0.5 250 0.84 0.64 Unit V V V V V mV nA V nA V V
6.4 −7 −250
IRD = 5 mA 0.76 0.56 0.8VIN 0.6VIN
[LB1661] Absolute Maximum Ratings at Ta = 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 Symbol ICC max VO max IO max IRD VRD Pd max Topr Tstg t % 20 ms Conditions Ratings 200 −0.3 to +83 1.5 5 20 1.2 −30 to +80 −55 to +125 Unit mA V A mA V W °C °C
Allowable Operating Conditions at Ta = 25°C
Parameter Input current range Common-mode input voltage range Symbol ICC VICM Conditions Ratings 7.0 to 50.0 0 to VIN−1.5 Unit mA V
Electrical Characteristics at Ta = 25°C
Parameter Output limit voltage 1 Output limit voltage 2 Output saturation voltage VIN input voltage Amp input offset voltage Amp input bias current Comparator input bias current Comparator input threshold voltage Symbol VOsus VOR VO (sat)1 VO (sat)2 VO (sat)3 VIN Voff IBA IBC VTH Conditions IO = 0.1 A, both VOUT 1, 2 IO = 0 A, both VOUT 1, 2 IO = 0.5 A, both VOUT 1, 2 IO = 1.0 A, both VOUT 1, 2 IO = 1.5 A, both VOUT 1, 2 ICC = 7.0 mA min 65 80 typ max Unit V V V V V V mV nA nA V
6.4 −7 −250
0.95 1.15 1.40 6.7 0
1.20 1.50 2.00 7.0 7 250
0.8VIN
No.2551-4/9
LB1660N, 1661, 1664N, 1665
[LB1664N] Absolute Maximum Ratings at Ta = 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 Symbol ICC max VO max IO max IOM IRD VRD Pd max Topr Tstg t % 20 µs t % 20 ms Conditions Ratings 200 Internal 1.5 −50 5 30 2.0 –30 to +80 –55 to +125 Unit mA V A mA mA V W °C °C
Allowable Operating Conditions at Ta = 25°C
Parameter Input current range Common-mode input voltage range Symbol ICC VICM Conditions Ratings 7.0 to 50.0 0 to VIN-1.5 Unit mA V
Electrical Characteristics at Ta = 25°C
Parameter Output limit voltage Output saturation voltage VIN input voltage Amp input offset voltage Amp input bias voltage RD output saturation voltage Comparator input bias current Comparator input threshold voltage Symbol VOLM VO (sat)1 VO (sat)2 VO(sat)3 VIN Voff IBA VRD (sat) IBC VTH1 VTH2 Conditions IO = 1.0 A IO = 0.5 A IO = 1.0 A IO = 1.5 A ICC = 7.0 .