LB11967V(2016) データシートの表示（PDF） - ON Semiconductor
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LB11967V Datasheet PDF : 10 Pages
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LB11967V
Single-Phase Full-Wave Pre-Driver
for Variable Speed Fan Motor
Overview
The LB11967V is a single-phase bipolar variable speed fan motor pre-driver
that works with an external PWM signal.
A highly efficient, quiet and low power consumption motor driver circuit,
with a large variable speed, can be implemented by adding a small number of
external components.
This device is optimal for driving large scale fan motors (with large air
volume and large current) such as those used in servers and consumer
products.
Functions
• Pre-driver for single-phase full-wave drive
PNP-EMOS is used as an external power Transistor, enabling
high-efficiency low-consumption drive by means of the low-saturation
output and single-phase full-wave drive. (PMOS-NMOS also applicable)
• External PWM input enabling variable speed control
Separately-excited upper direct PWM (f = 25kHz) control method, enabling
highly silent speed control
• Compatible with 12V, 24V, and 48V power supplies
• Current limiter circuit incorporated
Chopper type current limit at start
• Reactive current cut circuit incorporated
Reactive current before phase change is cut to enable silent and
low-consumption drive.
• Minimum speed setting pin
Minimum speed can be set with external resistor. The start assistance circuit
enables start at extremely low speed.
• Constant-voltage output pin for Hall bias
• Lock protection and automatic reset functions incorporated
• (Rotation speed detection), RD (Lock detection) output
Applications
• Computing & Peripherals
• Consumer
• Server
www.onsemi.com
SSOP20 (225mil)
XXXXXXXXXX
YMDDD
XXXXX = Specific Device Code
Y = Year
M = Month
DDD = Additional Traceability Data
ORDERING INFORMATION
See detailed ordering and shipping
information on page 10 of this data
sheet.
© Semiconductor Components Industries, LLC, 2016
1
November 2016- Rev. 1
Publication Order Number:
LB11967V/D
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