LB11660FV Half-pre Motor Driver Single-Phase Full

LB11660FV
Monolithic Digital IC
Half-pre Motor Driver
Single-Phase Full-Wave,
for Fan Motor
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Overview
The LB11660FV is a single-phase bipolar drive half-predriver motor driver
that can easily implement a direct PWM driver motor driver circuit with
excellent efficiency. The LB11660FV is particularly well suited for the
miniature fans used in servers.
Features
 Single-phase full-wave drive (15V, 1.5A transistors are built in)
Half predriver with integrated high side transistor
SSOP16 (225mil)
 Built-in variable speed function controlled by an external input
The LB11660FV can implement quiet, low-vibration variable speed control
using externally clocked high side transistor direct PWM drive.
 Minimum speed setting pin
 Current limiter circuit
(The limit value is determined by Rf; IO = 1A when RF = 0.5)
 Built-in kickback absorption circuit
 Soft switching circuit makes low current consumption, low loss, and low
noise drive possible at phase switching
 Built-in HB
 Built-in lock protection and automatic recovery circuits
(built-in on/off ratio switching circuit controlled by the supply voltage)
 FG (speed detection) output
 Built-in thermal protection circuit (design guarantee)
ORDERING INFORMATION
See detailed ordering and shipping information on page 10 of this data sheet.
© Semiconductor Components Industries, LLC, 2015
August 2015 - Rev. 1
1
Publication Order Number :
LB11660FV/D
LB11660FV
Specifications
Absolute Maximum Ratings at Ta = 25C
Parameter
VCC maximum supply voltage
VM maximum supply voltage
OUT pin maximum output
Symbol
Conditions
Ratings
Unit
VCC max
20
V
VM max
20
V
IOUT max
Rf  0.39
1.5
current
OUT pin output voltage 1
VOUT max 1
OUT pin output voltage 2
VOUT max 2
PRE pin maximum source
IPSO max
T  0.4s
A
20
V
26.5
V
30
mA
current
PRE pin maximum sink current
IPSI max
7
mA
PRE pin output voltage
VP max
20
V
HB maximum output current
HB max
10
mA
VTH input pin voltage
VTH max
7
V
FG output pin voltage
VFG max
18
V
FG output current
IFG max
10
mA
Allowable power dissipation
Pd max
0.8
W
Operating temperature
Topr
Storage temperature
Tstg
When mounted on a circuit board *1
*2
30 to +90
C
55 to +150
C
*1 Specified circuit board : 114.3  76.1  1.6mm3, glass epoxy.
*2: Tj max is 150°C. This device must be used under conditions such that the chip temperature does not exceed Tj = 150°C during operation.
Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality should not be assumed,
damage may occur and reliability may be affected.
Recommended Operating Conditions at Ta = 25C
Parameter
VCC supply voltage
Symbol
Conditions
Ratings
Unit
VCC
4 to 15
V
VM
3 to 15
V
Current limiter operation range
ILIM
0.6 to 1.2
V
VTH input level voltage range
VTH
0 to 6
V
Hall sensor input common-mode
VICM
0.2 to 3
V
VM supply voltage
input 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.
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LB11660FV
Electrical Characteristics Unless otherwise specified Ta  25C, VCC = 12V
Ratings
Parameter
Symbol
Conditions
Unit
min
typ
max
Circuit current
ICC1
Drive mode
9
12
HB voltage
VHB
IHB = 5mA
1.05
1.25
1.40
V
6VREG = 5mA
5.80
6
6.20
V
6VREG voltage
V6VREG
mA
CT pin high-level voltage
VCTH
3.4
3.6
3.8
V
CT pin low-level voltage
VCTL
1.4
1.6
1.8
V
ICT pin charge current 1
ICTC1
VCC = 12V
1.7
2.2
2.7
A
ICT pin charge current 2
ICTC2
VCC = 6V
1.3
1.8
2.3
A
ICT pin discharge current 1
ICTD1
VCC = 12V
0.11
0.15
0.19
A
ICT pin discharge current 2
ICTD2
VCC = 6V
0.34
0.44
0.54
ICT charge/discharge current
RCT1
VCC = 12V
12
15
18
Times
RCT2
VCC = 6V
3
4
5
Times
VRCT
6
6.6
7.3
V
IBVTH
2
1
0
A
A
ratio 1
ICT charge/discharge current
ratio 2
ICT charge/discharge ratio
threshold voltage
VTH bias current
OUT output high saturation
VOH
IO = 200mA, RL = 1
0.6
0.8
V
VPL
IO = 5mA
0.2
0.4
V
VPH
IO = 20mA
0.9
1.2
V
VRf
VCC  VM
voltage
PRE output low saturation
voltage
PRE output high saturation
voltage
Current limiter
450
500
550
mV
VPWMH
2.2
2.5
2.8
V
VPWML
0.4
0.5
0.7
V
PWM external C charge current
IPWM1
23
18
14
A
PWM external C discharge
IPWM2
18
24
30
A
19
23
27
kHz
15
25
mV
0.2
0.3
V
30
A
210
C
PWM output pin high-level
voltage
PWM output pin low-level
voltage
current
PWM oscillator frequency
Hall sensor input sensitivity
FPWM
VHN
C = 200pF
Zero peak value (including offset and
hysteresis)
FG output pin low-level voltage
VFG/RD
IFG/RD = 5mA
FG output pin leakage current
IFGL/IRDL
VFG/RD = 7V
Thermal protection circuit
THD
Design target value*3
150
180
*3: This is a design guarantee and is not tested in individual units. The thermal protection circuit is included to prevent any thermal damage to the IC. Since this
would imply operation outside the IC's guaranteed temperature range, the application thermal design must be such that the thermal protection circuit will
not operate if the fan is operating constantly.
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.
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LB11660FV
Package Dimensions
unit : mm
SSOP16 (225mil)
CASE 565AM
ISSUE A
to
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.
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4
*This information is generic. Please refer to
device data sheet for actual part marking.
LB11660FV
Pin Assignment
VM 1
16
OUT1
OUT2 2
15
PRE1
PRE2 3
14
GND
13
6VREG
VTH 5
12
CT
RMI 6
11
IN-
CPWM 7
10
HB
FG 8
9
IN+
VCC 4
LB11660FV
Top view
Truth Table
IN-
IN+
High
Low
Low
High
High
Low
Low
High
High
Low
Low
High
VTH
Low
CPWM
CT
High
Low
High
Low
-
-
High
OUT1
OUT2
PRE1
PRE2
FG
High
Off
Low
High
Low
Off
High
High
Low
Off
Off
Off
Low
High
Low
During rotation 
Off
Off
High
Low
Off
regeneration
Off
Off
Low
High
Low
Off
Off
High
Low
Off
CPWM – High is the state where CPWM > VTH, and CPWM– Low is the state where CPWM < VTH.
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Mode
During rotation  drive
Lock protection
LB11660FV
Application Circuit Example 1
Rf
*4
*2
VCC
CM = 4.7F or
more
VM
HB
H
IN*5
*7
IN+
FG
6VREG
R3
OUT2
*9
RMI
OUT1
R4
*3
Control valtage
PRE1
VTH
PRE2
CPWM
CP = 200pF *f = 23kHz
CP = 100pF *f = 46kHz
*6
*1
CT
CT = 0.47 to 1F
GND
*1. Power supply and ground lines
The IC ground is the control current power supply system ground, and the external n-channel transistor ground is the motor power
supply system ground.
These two systems should be formed from separate lines and the control system external components should be connected to the
IC ground.
*2. Regeneration power supply stabilization capacitor
Use a 4.7µF/25V capacitor at least for CM, which is the power supply stabilization capacitor for both PWM drive and kickback
absorption.
The capacitor CM must be connected to prevent destruction of the IC when power is applied or removed.
*3. Speed Control
(1) Control voltage
The PWM duty is determined by comparing the VTH pin voltage with the PWM oscillator waveform.
When the VTH voltage falls, the on duty increases and when the VTH voltage falls below the PWM output low level, the duty will
go to 100%.
(2) Thermistor
For thermistor applications, normally the 6VREG level will be resistor divided and the divided level input to the VTH pin.
The PWM duty is changed by changes in the VTH pin voltage due to changes in temperature.
*4. Current limiter setting
The current limiter circuit operates if the voltage across the resistor between VCC and the VM pin exceeds 0.5V.
Since the current limiter circuit applies limitation at a current determined by IO = VRf/Rf (where VRf = 0.5V (typical), Rf:
resistance of the current detection resistor), the current limiter will operate at IO = 1A when Rf = 0.5.
The resistor RF must be connected in the circuit and it must have a value such that the circuit operates within the recommended
current limiter operating range.
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LB11660FV
*5. 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.
*6. PWM oscillator frequency setting capacitor
The PWM oscillator oscillates at f = 23kHz when CP is 200pF and at f = 46kHz when CP is 100pF, and this frequency becomes the
PWM reference frequency.
Note that the PWM frequency is given approximately by the following equation.
f [kHz]  (4.6×106) ÷C [pF]
*7. 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.
*8. HB pin
This pin provides a Hall effect sensor bias constant-voltage output of 1.25V.
*9. RMI pin
This pin is the speed control minimum speed setting.
The minimum output duty is set by R3 and R4. Leave R4 open to have the motor stop when the duty is 0%.
Rotation Control Timing Chart
Duty 100%
PWM
duty(%)
Minimum
output duty
Duty 0%
RMI
VPWML
VPWMH
VTH(V)
Minimum speed
setting rotation
PWM control variable speed mode
Full speed mode
VTH voltage
2.5V
RMI voltage
CPWM
0.5V
0V
ON
On duty
OFF
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LB11660FV
Application Circuit Example 2
Mounting circuit board (Component values are provided for reference purposes)
D1
R1
C1
VCC
R5
VM
HB
IN-
H
IN+
FG
6VREG
C2
R3
OUT2
RMI
OUT1
R4
Q1
R2
Control voltage
PRE1
VTH
Q2
C3
PRE2
(C6)
CPWM
C4
CT
C5
GND
Parts List
D1
: SBM30-03-Tr (Our product)
Q1, 2 : CPH3418 (Our product)
R1
: 0.51
size 3225
R2
: 15k
size 1608
R3
: 39k
size 1608
R4
: 20k
size 1608
R5
: 2.2
size 1608
C1
: 4.7F/25V size 3216
C2
: 2.2F
size 1608
C3
: 2.2F
size 1608
C4
: 220pF
size 1005
C5
: 0.47F
size 1608
C6, 7 : No connection
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(C7)
LB11660FV
Application Circuit Example 3
No minimum speed setting, thermistor input used
RL
VCC
CM = 4.7F or
more
*8
H
VM
HB
IN-
*5
IN+
FG
6VREG
R3
OUT2
RMI
OUT1
RTU
PRE1
VTH
TH
CP = 200pF *f = 23kHz
CP = 100pF *f = 43kHz
PRE2
CPWM
CT
CT = 0.47 to 1F
GND
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LB11660FV
Internal Equivalent Circuit Diagram
FG
Thermal
protection circuit
VCC
VM
Constant voltage
Delay circuit
6VREG
OUT2
HB
HALL
Control
circuit
1.25V
OUT1
M
IN+
Delay circuit
Predriver
Predriver
INAmplifier with
hysteresis
Charge/discharge
circuit
GND
CT
RMI
PRE1
PRE2
Oscillator
circuit
CPWM
VTH
ORDERING INFORMATION
Device
LB11660FV-MPB-H
Package
SSOP16 (225mil)
(Pb-Free / Halogen Free)
Wire Bond
Shipping (Qty / Packing)
Au-Wire
90 / Fan-Fold
LB11660FV-TLM-H
SSOP16 (225mil)
(Pb-Free / Halogen Free)
Au-Wire
2000 / Tape & Reel
LB11660FV-W-AH
SSOP16 (225mil)
(Pb-Free / Halogen Free)
Cu-Wire
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
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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
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