Product Summary

The LB1667 is a 2-phase unipolar drive brushless motor driver that features a wide usable voltage range and a minimal number of required external components. The LB1667 also supports the formation of motor lock protection and automatic recovery circuits.

Parametrics

LB1667 absolute maximum ratings: (1)Maximum input current, ICC max: 200 mA when t ≤ 20 ms; (2)Output current, IOUT: 1.5 A; (3)Output minus current, IOM: –50 mA; (4)RD/FG influx current, IRD/IFG: 10 mA; (5)RD/FG voltage, VRD/VFG: 30 V; (6)Allowable power dissipation, Pd max: 1.1 W; (7)Operating temperature, Topr: –30 to +80℃; (8)Storage temperature, Tstg: –55 to +150℃.

Features

LB1667 features: (1)Output protection Zener diodes with variable breakdown voltages: When the Z1 and Z2 pins are open: VOLM = 57 V; When the Z1 and Z2 pins are shorted: VOLM = 32 V; An external Zener diode can be connected between Z1 and VCC; (2)Can support both 12-V and 24-V power supplies by changing an external resistor; (3)Hall elements can be connected directly; (4)1.5-A output current output transistors built in; (5)Built-in rotation detection function that outputs low when driven and high when stopped (LB1668/M); (6)FG signal function that sets FG high when IN- is low, and sets FG low when IN- is high (LB1667/M); (7)Motor lock protection and automatic recovery functions built in; (8)Thermal shutdown function.

Diagrams

LB1667 block diagram and application circuit

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
LB1667
LB1667

Other


Data Sheet

Negotiable 
LB1667M
LB1667M

Other


Data Sheet

Negotiable