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LB1868M-TLM-E

更新时间： 2024-10-26 13:09:15
品牌 Logo 应用领域
安森美 - ONSEMI 驱动器运动控制电子器件风扇信号电路电机
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Ordering number : EN6203A  
LB1868M  
Monolithic Digital IC  
2-phase Brushless  
http://onsemi.com  
Fan Motor Driver  
Overview  
The LB1868M is a 2-phase unipolar brushless motor driver. With only a few peripheral parts, lockup protection and  
automatic recovery can be implemented. The IC can be configured for 12V or 24V operation and a wide range of  
variations, from Low speed to H-High speed and from 60cm to 120cm square using the same PCB. This makes it easy  
to design highly reliable fan motor installations.  
Features  
• Output protection Zener diode with variable withstand voltage  
Z1, Z2 pins open: V LM = 57V (24V specification)  
O
Z1, Z2 pins shorted: V LM = 32V (12V specification)  
O
External Zener diode connected across Z1 − V  
pins: support for fans with large drive current  
CC  
• External resistor allows configuration for 12V or 24V  
• Direct Hall element connection possible (built-in Hall amplifier with hysteresis supports core without auxiliary electrode)  
• Built-in output transistor with 1.0A output current (strengthened negative-current support for core without auxiliary  
electrode)  
• Built-in rotation detection function: Low during rotation and High during stop  
• Built-in lockup protection with automatic recovery  
• ST pin for motor stop/drive (for standby mode of copiers etc.)  
• BC pin for kickback noise reduction (with 2 external capacitors)  
• FG output pin for rotation detection  
• Built-in thermal shutdown  
Specifications  
Absolute Maximum Ratings at Ta = 25°C  
Parameter  
Maximum input current  
Maximum applied output voltage  
Maximum output current  
Current flowing into RD, FG  
RD, FG applied voltage  
ST applied voltage  
Symbol  
Conditions  
Ratings  
Unit  
mA  
V
I
max  
t ≤ 20ms  
200  
CC  
V
I
max  
Internal  
OUT  
max  
1.0  
10  
A
OUT  
I
max  
mA  
V
RD  
V
max  
max  
30  
RD  
ST  
V
7.5  
V
Allowable power dissipation  
Operating temperature  
Storage temperature  
Pd max  
Topr  
Mounted on a specified board *  
800  
mW  
°C  
°C  
-30 to +80  
-55 to +150  
Tstg  
* Specified board: 20mm × 15mm × 1.5mm, glass epoxy board.  
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating  
Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability.  
Semiconductor Components Industries, LLC, 2013  
May, 2013  
31109 MS / 83100RM(KI) No.6203-1/5  
12345

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