LB1868M-TLM-H Datasheet, PDF (1/5 Pages) ON Semiconductor – Fan Motor Driver

Ordering number : EN6203A
LB1868M
Monolithic Digital IC
2-phase Brushless
Fan Motor Driver
http://onsemi.com
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: VOLM = 57V (24V specification)
Z1, Z2 pins shorted: VOLM = 32V (12V specification)
External Zener diode connected across Z1 − VCC pins: support for fans with large drive current
• 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.)
• FG output pin for rotation detection
• BC pin for kickback noise reduction (with 2 external capacitors) • Built-in thermal shutdown
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter
Symbol
Conditions
Maximum input current
Maximum applied output voltage
Maximum output current
Current flowing into RD, FG
RD, FG applied voltage
ST applied voltage
Allowable power dissipation
ICC max
VOUT max
IOUT max
IRD max
VRD max
VST max
Pd max
t ≤ 20ms
Mounted on a specified board *
Operating temperature
Topr
Storage temperature
Tstg
* Specified board: 20mm × 15mm × 1.5mm, glass epoxy board.
Ratings
Unit
200
mA
Internal
V
1.0
A
10
mA
30
V
7.5
V
800
mW
-30 to +80
°C
-55 to +150
°C
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