LB11867RV_11 Datasheet, PDF (1/9 Pages) Sanyo Semicon Device – For Fan Motor Variable Speed Single-phase Full-wave Pre-driver

Ordering number : ENA1534A
LB11867RV
Monolithic Digital IC
For Fan Motor
Variable Speed Single-phase
Full-wave Pre-driver
Overview
LB11867RV is a single-phase bipolar driving motor pre-driver with the variable speed function compatible with external
PWM signal. With a few external parts, a highly-efficient and highly-silent variable drive fan motor with low power
consumption can be achieved. This product is best suited for driving of the server requiring large air flow and large current
and the fan motor of consumer appliances.
Features
• Single-phase full-wave driving pre-driver
⇒ Low-saturation drive using external PMOS-NMOS enables high-efficiency low power-consumption drive.
• Variable speed control possible with external PWM input
⇒ Separately-excited upper direct PWM (f =30kHz) control method ensures highly silent speed control.
• Current limiting circuit incorporated
⇒ Chopper type current limiting made at startup and during lock.
• Reactive current cut circuit incorporated
⇒ Reactive current before phase changeover is cut, ensuring highly silent and low power-consumption drive.
• Minimum speed setting pin
⇒ Minimum speed can be set by setting the resistance.
• Soft start setting pin
• Lock protection and automatic reset circuits incorporated
• RD (lock detection) output
• Thermal shutdown circuit incorporated
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.
11911 SY/72909 SY 20080204-S00002 No.A1534-1/9