LB11861MC-AH [ONSEMI]
Single-Phase Full-Wave Fan Motor Driver; 单相全波风扇电机驱动器
| 型号： | LB11861MC-AH |
| 厂家： | 
ONSEMI |
| 描述： | Single-Phase Full-Wave Fan Motor Driver |
| 文件： | 总5页 (文件大小：70K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Ordering number : ENA2023
LB11861MC
Monolithic Digital IC
Single-Phase Full-Wave
http://onsemi.com
Fan Motor Driver
Overview
The LB11861MC is a single-phase bipolar drive motor driver that easily implements direct PWM motor drive systems
with excellent efficiency. The LB11861MC is optimal for fan motor drive in personal computer power supply systems
and CPU cooling fan systems.
Features
•Single-phase full-wave drive (16V, 1.2A transistors are built in)
• External PWM control pin incorporated (f=16k to 50kHz)
External PWM signal DUTY control to enable speed control to stop, medium speed, and full speed
Slow-Decay regeneration to enable low power consumption and high-efficiency rotation control
•Soft switching circuit incorporated
Soft-SW circuit achieving small loss, low noise, and low vibration at a time of phase shift
•Built-in regenerative diode (Di); only requires a minimal number of external components.
•Built-in lock protection and automatic recovery circuits
•FG (speed detection) outputs incorporated
•Built-in thermal shutdown circuit.
Semiconductor Components Industries, LLC, 2013
May, 2013
31412 SY 20120127-S00003 No.A2023-1/5
LB11861MC
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter
Symbol
Conditions
Ratings
Unit
V
V
maximum output voltage
V
max
18
1.2
18
CC
CC
OUT pin maximum output current
OUT pin output voltage
PWM-IN input pin voltage
FG output pin output voltage
FG output current
I
max
max
A
OUT
V
V
OUT
VPWM-IN max
VFG max
IFG max
Pd max
Topr
V
V
CC
18
V
mA
W
10
Allowable power dissipation
Operating temperature
Storage temperature
When mounted on a circuit board *1
0.8
°C
°C
-30 to +90
Tstg
-55 to +150
*1 Specified circuit board : 114.3 × 76.1 × 1.6mm3, glass epoxy.
Caution 1) Absolute maximum ratings represent the value which cannot be exceeded for any length of time.
Caution 2) Even when the device is used within the range of absolute maximum ratings, as a result of continuous usage under high temperature, high current,
high voltage, or drastic temperature change, the reliability of the IC may be degraded. Please contact us for the further details.
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating
Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability.
Recommended Operating Conditions at Ta = 25°C
Parameter
Symbol
Conditions
Ratings
Unit
V
V
supply voltage
V
4.5 to 16
CC
CC
VPWM-IN input H voltage range
VPWM-IN input L voltage range
VPWM-IN-H
VPWM-IN-L
VICM
V
V
V
2.5 to V
CC
0 to 1
Hall sensor input common-mode
input voltage range
0.2 to 3
Electrical Characteristics Unless otherwise specified Ta = 25°C, V
CC
= 12V
Ratings
typ
Parameter
Circuit current
Symbol
Conditions
Unit
min
max
29
I
I
1
2
Drive mode
Lock protection mode
15
6
24.5
11
mA
μA
V
CC
16
CC
CT pin high-level voltage
VCTH
VCTL
ICT1
ICT2
RCT
3.45
1.4
1.7
0.17
8
3.6
3.75
1.7
2.8
0.28
11.5
0.3
1.1
20
CT pin low-level voltage
1.55
2.2
V
ICT charge current
μA
μA
ICT discharge current
0.22
10
ICT charge/discharge current ratio
OUT output low saturation voltage
OUT output high saturation voltage
Hall sensor input sensitivity
V
I
I
= 200mA
= 200mA
0.2
V
V
OL
O
O
V
0.9
OH
VHN
Zero peak value (including offset and
hysteresis)
10
mV
PWM-IN input current
IPIN
VRDL/FGL
IRDL/FGL
THD
PWM-IN=0V
-10
0.3
30
μA
V
RD/FG output pin low-level voltage
RD/FG output pin leakage current
Heat protection circuit
IRD/FG = 5mA
VRD/FG = 7V
0.2
μA
°C
(*2) Design target
180
(*2) The standard is a design target value and measurement with the single piece has not been made.
No.A2023-2/5
LB11861MC
Package Dimensions
unit : mm (typ)
3420
Pd max —Ta
1.0
0.8
0.6
0.4
Specified circuit board : 114.3×76.1×1.6mm3
5.0
glass epoxy board
10
0.38
2
1
0.15
1.0
0.8 MAX
0.35
0.2
0
10
30
50
70
90
110
Ambient temperature, Ta —C
MFP10SK(225mil)
Truth Table
PWM-IN
IN-
IN+
Low
High
Low
High
Low
High
CT
OUT1
High
Low
Off
OUT2
Low
High
Low
Off
FG
Low
Off
Mode
High
Low
High
Low
High
Low
During rotation − drive
High
Low
Low
Low
Off
During rotation − regeneration
Low
High
Off
-
-
Off
Low
Off
Lock protection
High
High
Pin Assignment
MFP-10SK(TOP VIEW)
PGND
OUT1
SGND
CT
OUT2
V
LB11861MC
CC
PWM-IN
FG
IN-
IN+
V : Common power supply for motor and control systems
CC
PGND: Motor system GND
SGND: Control system GND
No.A2023-3/5
LB11861MC
Block Diagram
FG
Thermal
protection circuit
V
CC
Delay circuit
constant
voltage
control
circuit
OUT2
M
HALL
IN+
IN-
Delay circuit
Amplifier with
hysteresis
charge/discharge
circuit
OUT1
SGND
CT
PGND
PWM-IN
Application Circuit Example
*2
V
CC
FG
*5
H
IN-
*4
OUT1
IN+
PWM control signal
f=16K to 50KHz
OUT2
PGND
PWM-IN
CT
*3
*1
SGND
CT=0.47 to 1uF
*1. Power supply and ground lines
P-GND is connected to the motor power supply system and S-GND is connected to the control circuit power supply system.
These two systems should be formed from separate lines and the control system external components should be connected to
S-GND.
*2. Regeneration power supply stabilization capacitor
The capacitor CM provides power supply stabilization for both PWM drive and kickback absorption. A capacitor with a value of
over 1 to 10µF is used for CM. Insert the zenor diode for kickback protection between VCC and GND. Since this IC adopts a
technique in which switching is performed by the high side transistor and regeneration is handled by the low side transistor, the
pattern connecting CM to VM and P-GND must be as wide and as short as possible.
*3. PWM-IN pin
This is for speed control with the external PWM signal. With driving at the input of “H” and regeneration (Slow-Decay) at the
input of “L”, high efficiency rotation control can be made. RP=10kΩ is the current limiting resistor for protection. Though the
input signal frequency range is 0 to 50 kHz, 16 k to 50 kHz is recommended. Rotation can be stopped by inputting “L”.
No.A2023-4/5
LB11861MC
*4.Hall sensor input
Lines that are as short as possible must be used to prevent noise from entering the system. The Hall sensor input circuit consists of
a comparator with hysteresis (20mV). We recommend that the Hall sensor input level be at least three times this hysteresis, i.e. at
least 60mVp-p.
*5.FG output
This is an open collector output, and a rotation count detection function can be implemented using this FG output, which
corresponds to the phase switching. This pin must be left open if unused.
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 suitabilityof 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.A2023-5/5
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