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LB11867RV 데이터시트 PDF




Sanyo Semicon Device에서 제조한 전자 부품 LB11867RV은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


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부품번호 LB11867RV 기능
기능 Variable Speed Single-phase Full-wave Pre-driver
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LB11867RV 데이터시트, 핀배열, 회로
www.DataSheet.co.kr
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
Datasheet pdf - http://www.DataSheet4U.net/




LB11867RV pdf, 반도체, 판매, 대치품
www.DataSheet.co.kr
Block Diagram
CT
0.47 to 1 F
LB11867RV
Discharge circuit
Thermal shat down
RD
VCC
5VREG
Discharge pulse
5VREG
HALL IN+
IN-
Controller
Osillaton
S-S RMI VTH CPWM
SENSE
OUT1N
OUT1P
OUT2N
OUT2P
SGND
Truth table
(1) Drive lock CPWM=H VTH, RMI, S-S=L
IN- IN+ CT OUT1P
HL
L
L
LH
OFF
HL
OFF
H
LH
OFF
OUT1N
L
H
L
H
OUT2P
OFF
L
OFF
OFF
OUT2N
H
L
H
L
(2) Speed control CT, S-S=L
VTH, RMI
L
CPWM
H
IN-
H
L
IN+
L
H
HL
HL
LH
For VTH, RMI, and S-S pins, refer to the timing chart.
OUT1P
L
OFF
OFF
OFF
OUT1N
L
H
L
H
OUT2P
OFF
L
OFF
OFF
RD
L
L
OFF
OFF
OUT2N
H
L
H
L
Mode
OUT1 2 drive
OUT2 1 drive
Lock protection
Mode
OUT1 2 drive
OUT2 1 drive
Regeneration mode
No.A1534-4/9
Datasheet pdf - http://www.DataSheet4U.net/

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LB11867RV 전자부품, 판매, 대치품
www.DataSheet.co.kr
LB11867RV
Control timing chart (Speed control)
VTH voltage
RMI voltage
f=30kHz (CP=220pF)
0V Minimum speed
setting rotation
Low speed
High speed
(stop mode)
PWM control speed variable
100%
ONDUTY
0%
3.0V
CPWM
1.1V
Full speed
(1) Minimum speed setting (stop) mode
The low-speed fan rotation occurs at the minimum speed set with the RMI pin. When the minimum speed is not set
(RMI pin pulled up to 5VREG), the motor stops.
(2) Low speedhigh speed
PMW control is made by comparing the CPWM oscillation voltage (1.1V3.0V) and VTH voltage.
Both upper and lower output TRs are turned ON when the VTH voltage is low. The upper output TR is turned OFF
when the VTH voltage is high, regenerating the coil current in the lower TR. Therefore, as the VTH voltage decreases,
the output ON-DUTY increases, causing increase in the coil current, raising the motor rotation speed.
(3) Full speed mode
The full speed mode becomes effective when the VTH voltage is 1.1V or less. (Set VTH = GND when the speed
control is not to be made.)
No.A1534-7/9
Datasheet pdf - http://www.DataSheet4U.net/

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