Ordering number : EN6087B
Monolithic Digital IC
For Fan Motor
LB1975
3-phase Brushless Motor Driver
Overview
The LB1975 is a 3-phase brushless motor driver IC suited for use in direct PWM driving of DC fan motors for air
conditioners, water heaters, and other similar equipment. Since a shunt regulator circuit is built in, single power supply
operation sharing the same power supply for the motor is supported.
Features
• Withstand voltage 46V, output current 2.5A
• Direct PWM drive output
• 3 built-in output top-side diodes
• Built-in current limiter
• Built-in FG output circuit
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter
Supply voltage
Symbol
max
Conditions
Ratings
Unit
V
V
V
I
7
CC
max
46
V
M
Output current
max
2.5
A
O
Maximum input current
Allowable power dissipation
I
max
V
pin
10
3
mA
W
REG
REG
Independent IC
With infinite hear sink
Pd max1
Pd max2
Topr
20
W
Operating temperature
Storage temperature
-20 to +100
-55 to +150
°C
°C
Tstg
Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to
"standard application", intended for the use as general electronics equipment (home appliances, AV equipment,
communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be
intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace
instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety
equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case
of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee
thereof. If you should intend to use our products for applications outside the standard applications of our
customer who is considering such use and/or outside the scope of our intended standard applications, please
consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our
customer shall be solely responsible for the use.
Specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein stipulate
the performance, characteristics, and functions of the described products in the independent state, and are not
guarantees of the performance, characteristics, and functions of the described products as mounted in the
customer's products or equipment. To verify symptoms and states that cannot be evaluated in an independent
device, the customer should always evaluate and test devices mounted in the customer
's products or
equipment.
D1708 MS / 21003AS (OT) / 52199RM (KI) No.6087-1/10