LB11868V: Fan Motor Pre-Driver, Single-Phase, Full-Wave, Variable Speed

LB11868V 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

Variable speed control possible with external PWM input
Current limiting circuit incorporated
Soft start setting pin
Pch-FET kickback absorption setting pin
Lock protection and automatic reset circuits incorporated
Thermal shutdown circuit incorporated
Single-phase full-wave driving pre-driver
Reactive current cut circuit incorporated
Minimum speed setting pin
Start setting pin of on time
FG (rotational speed detection) output, RD (lock detection) output

Benefits

High Efficiency
Over current protection
Smooth booting
Over voltage protection
Destruction protection
Thermal protection

Applications

Computing & Peripherals
Industrial

End Products

Server
Air conditioner
Projector

Application Notes (1)

Document Title	Document ID/Size	Revision	Revision Date
LB11868V Motor Driver IC Application Note	ANDLB11868V/D (836kB)	1	DEC, 2013

Package Drawings (1)

Document Title	Document ID/Size	Revision
SSOP20J (225mil)	565AP (58.3kB)	A

Data Sheets (1)

Document Title	Document ID/Size	Revision	Revision Date
Variable Speed Single-phase Full-wave Fan Motor Pre-driver IC	ENA1915/D (189.0kB)	0

Evaluation Board Documents (4)

Document Title	Document ID/Size	Revision
LB11868VGEVB Bill of Materials ROHS Compliant	LB11868VGEVB_BOM_ROHS.PDF (90kB)	0
LB11868VGEVB Gerber Layout Files (Zip Format)	LB11868VGEVB_GERBER.ZIP (114.0kB)	0
LB11868VGEVB Schematic	LB11868VGEVB_SCHEMATIC.PDF (22kB)	0
LB11868VGEVB Test Procedure	LB11868VGEVB_TEST_PROCEDURE.PDF (128kB)	1