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PDF LB11868V Data sheet ( Hoja de datos )

Número de pieza LB11868V
Descripción Variable Speed Single-phase Full-wave Pre-driver
Fabricantes ON Semiconductor 
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No Preview Available ! LB11868V Hoja de datos, Descripción, Manual

Ordering number : ENA1915A
LB11868V
Monolithic Digital IC
For Fan Motor
Variable Speed Single-phase
Full-wave Pre-driver
http://onsemi.com
Overview
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
Single-phase full-wave driving pre-driver
Variable speed control possible with external PWM input
Current limiting circuit incorporated
Reactive current cut circuit incorporated
Minimum speed setting pin
Soft start setting pin
Start setting pin of on time
Pch-FET kickback absorption setting pin
Lock protection and automatic reset circuits incorporated
FG (rotational speed detection) output, RD (lock detection) output
Thermal shutdown circuit incorporated
Semiconductor Components Industries, LLC, 2013
May, 2013
51311 SY/11911 SY 20101217-S00010 No.A1915-1/11

1 page




LB11868V pdf
Application Circuit Example
LB11868V
*2
*16
1
*17
2
3
4
PWM-IN
*1
*3 REG
*13
S-S
*8 RMI
VCC
FG *10
RD *11
*15
*7
*4
*5
H
KBSET
VTH
HB
IN+
IN-
CPWM CT
*6 *12
OUT1P
OUT1N
SENSE *9
OUT2N
OUT2P
SGND
OTS
*14
220pF
1
2
3
4
*1. Power stabilization capacitor
For the power stabilization capacitor on the signal side, use the capacitance of 1μF or more.
Connect VCC and SGND with a thick and shortest pattern.
*2. Power stabilization capacitor on the power side
For the power stabilization capacitor on the power side, use the capacitance of 1μF or more.
Connect the power supply on the power side and GND with a thick and shortest pattern.
When the IC is used for a fan with a high current level, insert a zener diode between the power supply on the power
side and GND.
*3. REG pin
3.8V constant-voltage output pin. For the REG oscillation prevention and stabilization, use a capacitor with
capacitance of 1µF or more. Connect the REG pin and SGND with a thick and shortest pattern.
*4. HB pin
Used for Hall device bias purposes.
*5. IN+, IN- pins
Hall signal input pin.
Wiring should be short to prevent carrying of noise.
If noise is carried, insert the capacitor between IN+ and IN- pins.
The Hall input circuit functions as a comparator with hysteresis (15mV).
This also has a soft switch section with ±30mV (input signal differential voltage).
It is also recommended that the Hall input level is minimum 100mV (p-p).
No.A1915-5/11

5 Page





LB11868V arduino
LB11868V
ON Semiconductor and the ON logo are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC owns the rights to a number
of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of SCILLC’s product/patent coverage may be accessed at
www.onsemi.com/site/pdf/Patent-Marking.pdf. SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no
warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the
application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental
damages. “Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual
performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical
experts. SCILLC does not convey any license under its patent rights nor the rights of others. SCILLC products are not designed, intended, or authorized for use
as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in
which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should Buyer purchase or use SCILLC products for
any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates, and distributors
harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or
death associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the
part. SCILLC is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.
PS No.A1915-11/11

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