LB11867RV D

LB11867RV
Monolithic Digital IC
For Fan Motor
www.onsemi.com
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.
Feature
SSOP16 (225mil)
 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
Typical Applications
 Computing & Peripherals
 Industrial
 Server
 Consumer Appliances
ORDERING INFORMATION
See detailed ordering and shipping information on page 11 of this data sheet.
© Semiconductor Components Industries, LLC, 2015
June 2015 - Rev. 1
1
Publication Order Number :
LB11867RV/D
LB11867RV
Specifications
Absolute Maximum Ratings at Ta = 25C
Parameter
Symbol
VCC pin maximum supply voltage
VCC max
18
V
IOUTN max
20
mA
OUTP pin maximum Sink current
IOUTP max
20
mA
OUT pin output withstand voltage
VOUT max
18
V
VTH, RMI pins withstand voltage
OUTN pin maximum output
Conditions
Ratings
Unit
current
VVTH, VRMI max
7
V
S-S pin withstand voltage
VS-S max
7
V
RD output pin withstand voltage
VRD max
19
V
RD pin maximum output current
5VREG pin maximum output
IRD max
10
mA
I5VREG max
20
mA
800
mW
current
Allowable power dissipation
Pd max
Operating temperature
Topr
Storage temperature
Tstg
with specified substrate *1
*2
-30 to 95
C
-55 to 150
C
*1 Specified substrate: 114.3mm76.1mm1.6mm, glass epoxy board.
*2 Tj max=150°C must not be exceeded.
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
VCC Supply voltage
VTH, RMI input voltage range
Hall input common-phase input
Symbol
Conditions
VCC
VTH, RMI
VICM
Ratings
Unit
5.5 to 16
V
0 to 5
V
0.2 to 3
V
voltage range
Functional operation above the stresses listed in the Recommended Operating Ranges is not implied. Extended exposure to stresses beyond the Recommended
Operating Ranges limits may affect device reliability.
www.onsemi.com
2
LB11867RV
Electrical Characteristics at Ta  25C, VCC = 12V
Parameter
Circuit current
5VREG voltage
Symbol
Conditions
Ratings
min
typ
Unit
max
ICC1
During drive
5.5
7.5
9.5
mA
ICC2
During lock protection
5.5
7.5
9.5
mA
4.80
4.95
5.10
V
VLIM
185
200
215
mV
CPWM pin “H” level voltage
VCPWMH
2.8
3.0
3.2
V
CPWM pin “L” level voltage
VCPWML
0.9
1.1
1.3
V
CPWM pin charge current
ICPWM1
VCPWM = 0.5V
24
30
36
A
CPWM pin discharge current
ICPWM2
VCPWM = 3.5V
21
27
33
A
CPWM Oscillation frequency
FPWM
CT pin “H” level voltage
VCTH
2.8
3.0
3.2
V
CT pin “L” level voltage
VCTL
0.9
1.1
1.3
V
CT pin charge current
ICT1
VCT = 0.5V
1.6
2.0
2.5
μA
CT pin discharge current
ICT2
VCT = 3.5V
0.16
0.20
0.25
CT pin charge/discharge ratio
RCT
ICT1/ICT2
8
10
12
times
0.4
A
Current limiting voltage
S-S pin discharge current
5VREG
I5VREG = 5mA
C = 220PF
30
kHz
μA
IS-S
VS-S = 1V
0.5
0.6
OUTN output H-level voltage
VONH
IO = 10mA
VCC-0.85
VCC-1.00
V
OUTN output L-level voltage
VONL
IO = 10mA
0.9
1.00
V
OUTP output L-level voltage
VOPL
IO = 10mA
0.5
0.65
V
VHN
IN+, IN- differential voltage
10
20
mV
0.15
0.30
V
Hall input sensitivity
(including offset and hysteresis)
RD output L-level voltage
RD pin leakage current
VTH/RMI pin bias current
VRDL
IRD = 5mA
IRDL
VRD = 19V
20
A
CPWM = VTH/RMI = 2V
0.1
A
IVTH/IRMI
Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product performance may not be
indicated by the Electrical Characteristics if operated under different conditions.
www.onsemi.com
3
LB11867RV
Package Dimensions
unit : mm
SSOP16 (225mil)
CASE 565AM
ISSUE A
GENERIC
MARKING DIAGRAM*
SOLDERING FOOTPRINT*
5.80
1.0
(Unit: mm)
0.32
XXXXXXXXXX
YMDDD
XXXXX = Specific Device Code
Y = Year
M = Month
DDD = Additional Traceability Data
0.65
NOTE: The measurements are not to guarantee but for reference only.
*For additional information on our Pb−Free strategy and soldering
details, please download the ON Semiconductor Soldering and
Mounting Techniques Reference Manual, SOLDERRM/D.
www.onsemi.com
4
LB11867RV
Pd max -- Ta
Allowable power dissipation, Pd max -- mW
1000
Mounted on a specified board:
114.3×76.1×1.6mm3, glass epoxy
800
600
400
352
200
0
-30
0
30
60
9095
Ambient temperature, Ta -- °C
Pin Assignment
OUT2P 1
16 OUT1P
OUT2N 2
15 OUT1N
VCC 3
14 SGND
SENSE 4
13 5VREG
RMI 5
12 S-S
VTH 6
11 CT
CPWM 7
10 IN+
RD 8
9 INTop View
www.onsemi.com
5
120
LB11867RV
Block Diagram
CT
Discharge circuit
Thermal shat down
0.47 to 1 F
RD
Discharge pulse
VCC
5VREG
OUT1N
5VREG
OUT1P
Controller
HALL
IN+
INOUT2N
OUT2P
Osillaton
S-S RMI VTH CPWM
SGND
SENSE
Truth table
(1) Drive lock CPWM=H VTH, RMI, S-S=L
IN-
IN+
H
L
L
H
H
L
L
H
CT
L
H
OUT1P
OUT1N
OUT2P
OUT2N
RD
Mode
L
L
OFF
H
L
OUT1  2 drive
OFF
H
L
L
L
OUT2  1 drive
OFF
L
OFF
H
OFF
OFF
H
OFF
L
OFF
Lock protection
(2) Speed control CT, S-S=L
VTH, RMI
CPWM
L
H
H
L
IN-
IN+
OUT1P
OUT1N
OUT2P
OUT2N
Mode
H
L
L
L
OFF
H
OUT1  2 drive
L
H
OFF
H
L
L
OUT2  1 drive
H
L
OFF
L
OFF
H
L
H
OFF
H
OFF
L
For VTH, RMI, and S-S pins, refer to the timing chart.
www.onsemi.com
6
Regeneration mode
LB11867RV
Application Circuit Example (12V)
*3
1
3
2
4
RF
*2
VCC
5VREG
RD
SENSE
H
*4
*9
*8
1
IN-
2
IN+
*11
*6
3
S-S
4
RMI
SGND
*7
PWM-IN
*1
VTH
CPWM
CP=220pF
30kHz
*5
CT
*10
*1. PowerGND wiring
SGND is connected to the control circuit power supply system.
*2. Power stabilization capacitor
For the power stabilization capacitor on the signal side, use the capacitance of 1μF or more.
Connect VCC and GND with a thick and shortest pattern.
*3. 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.
*4. 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).
*5. CPWM pin
Pin to connect the capacitor for generation of the PWM basic frequency
The use of CP = 220pF causes oscillation at f = 30kHz, which is the basic frequency of PWM.
As this is used also for the current limiting canceling signal, be sure to connect the capacitor even when the speed
control is not made.
www.onsemi.com
7
LB11867RV
*6. RMI pin
Minimum speed setting pin.
Perform pull-up with 5VREG when this pin is not to be used.
If the IC power supply is likely to be turned OFF first when the pin is used with external power supply, be sure to
insert the current limiting resistor to prevent inflow of large current. (The same applies to the VTH pin.)
*7. VTH pin
Speed control pin.
Connect this pin to GND when it is not used (at full speed).
For the control method, refer to the timing chart.
For control with pulse input, insert the current limiting resistor and use the pin with the frequency of 20k to 100kHz
(20kHz to 50kHz recommended).
*8. SENSE pin
Current limiting detection pin.
When the pin voltage exceeds 0.2V, the current is limited and the operation enters the lower regeneration mode.
Connect this pin to GND when it is not to be used.
*9. RD pin
Lock detection pin
In open collector output, L upon rotation and H when locked (using pull-up resistance).
Keep this pin open when it is not to be used.
*10. CT pin
Pin to connect the lock detection capacitor.
The constant-current charge and discharge circuits incorporated cause locking when the pin voltage becomes 3.0V
and unlocking when it is 1.1V.
Connect the pin to GND when it is not to be used (locking not necessary).
*11. S-S pin
Pin to connect the soft-start setting capacitor.
Connect the capacitor between 5VREG and S-S pin.
This pin enables setting of the soft start time according to the capacity of the capacitor.
See the timing char.
Connect the pin to GND when it is not to be used.
www.onsemi.com
8
LB11867RV
Control timing chart (Speed control)
f=30kHz (CP=220pF)
VTH voltage
3.0V
RMI voltage
CPWM
1.1V
0V
Minimum speed
setting rotation
(stop mode)
Low speed
High speed
PWM control speed variable
Full speed
100%
ONDUTY
0%
(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 speedhigh speed
PMW control is made by comparing the CPWM oscillation voltage (1.1V3.0V) 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.)
www.onsemi.com
9
LB11867RV
Control timing chart (Soft start)
(1)At VTH < RMI voltage
S-S voltage
3.0V
RMI voltage
CPWM
VTH voltage
1.1V
0V
Lock protection
Soft start section
VTH set speed
100%
ONDUTY
0%
T
(2) At VTH > RMI voltage
S-S voltage
VTH voltage
3.0V
RMI voltage
CPWM
1.1V
0V
Lock protection
Soft
start
section
RMI set speed
100%
ONDUTY
0%
T
Adjust the S-S pin voltage gradient by means of the capacitance of the capacitor between the S-S pin and 5VREG..
Recommended capacitor: 0.1 to 1F
www.onsemi.com
10
LB11867RV
ORDERING INFORMATION
Device
Package
Shipping (Qty / Packing)
LB11867RV-MPB-H
SSOP16 (225mil)
(Pb-Free / Halogen Free)
90 / Fan-Fold
LB11867RV-TLM-E
SSOP16 (225mil)
(Pb-Free)
2000 / Tape & Reel
LB11867RV-TLM-H
SSOP16 (225mil)
(Pb-Free / Halogen Free)
2000 / Tape & Reel
† For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel
Packaging Specifications Brochure, BRD8011/D. http://www.onsemi.com/pub_link/Collateral/BRD8011-D.PDF
ON Semiconductor and the ON logo are registered trademarks of Semiconductor Components Industries, LLC (SCILLC) or its subsidiaries in the United States
and/or other countries. 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.
www.onsemi.com
11