LB11660RV D

LB11660RV
Monolithic Digital IC
Half-pre Motor Driver
Single-Phase Full-Wave Drive,
for Fan Motor
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Overview
The LB11660RV is a single-phase bipolar half pre-driver that can achieve
high-efficient direct PWM drive with ease. It is ideal for driving small-sized
cooling fans used in servers. The LB11660RV is provided with the RD (lock
detection) output pin and the LB11660FV the FG (rotational speed detection)
output pin, respectively.
Features
Single-phase full-wave drive (15V-1.5A output transistor built in) upper output
Tr incorporated half pre-driver.
SSOP16 (225mil)
Variable speed control by an external signal.
Separately-excited upper TR direct PWM control method, enabling silent,
low-vibration variable speed control.
Lowest speed setting possible.
Current limiter circuit
(the circuit actuated at IO = 1A when Rf = 0.5, Rf determines the limiter value.)
Kickback absorption circuit built in.
Soft switching circuit achieves low power consumption, low loss, and low
noise driving at a time of phase change.
HB built in.
Lock protection and automatic reset functions incorporated (including a circuit
that changes the ON/OFF ratio according to the power supply voltage).
RD (lock detection) output.
Thermal protection circuit incorporated (design guaranteed).
ORDERING INFORMATION
See detailed ordering and shipping information on page 9 of this data sheet.
© Semiconductor Components Industries, LLC, 2015
August 2015 - Rev. 1
1
Publication Order Number :
LB11660RV/D
LB11660RV
Absolute Maximum Ratings at Ta = 25C
Parameter
Symbol
Conditions
Ratings
Unit
VCC maximum power supply voltage
VCC max
20
V
VM maximum power supply voltage
VM max
20
V
1.5
A
20
V
OUT pin maximum output current
IOUT max
OUT pin output withstand voltage 1
VOUT max1
Rf0.39
OUT pin output withstand voltage 2
VOUT max2
PRE pin maximum source current
IPSO max
30
mA
PRE pin maximum sink current
IPSI max
7
mA
PRE pin output withstand voltage
VP max
20
V
HB maximum output current
HB
10
mA
VTH input pin withstand voltage
VTH max
7
V
RD output pin output withstand voltage
VRD max
18
V
RD output current
IRD max
10
mA
Allowable power dissipation
Pd max
Mounted on a specified board *1
Operating temperature range
Topr
*2
Storage temperature range
Tstg
T0.4s
26.5
V
0.8
W
30 to 95
C
55 to 150
C
*1 A circuit board for mounting (114.3mm76.1mm1.6mm, glass epoxy resin)
*2 Tj max = 150 C. Must be used within the operating temperature range in which Tj does not exceed 150 C.
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 Range at Ta = 25C
Parameter
Symbol
VCC power supply voltage
VCC
VM power supply voltage
Conditions
Ratings
Unit
4 to 15
V
VCC
3 to 15
V
Current limiter operating range
ILIM
0.6 to 1.2
A
VTH input level voltage range
VTH
0 to 6
V
Hall input common phase input voltage range
VICM
0.2 to 3
V
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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LB11660RV
Electrical Characteristics at Ta = 25C, VCC = 12V, unless otherwise specified
Parameter
Symbol
Conditions
Circuit current
ICC1
During driving
HB voltage
VHB
IHB=5mA
6VREG voltage
V6VREG
6VREG=5mA
CT pin H level voltage
Ratings
min
typ
Unit
max
9
12
1.05
1.25
1.40
V
5.80
6
6.20
V
VCTH
3.4
3.6
3.8
V
CT pin L 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
A
ICT charge/discharge ratio 1
RCT1
VCC=12V
12
15
18
ICT charge/discharge ratio 2
RCT2
VCC=6V
3
4
5
ICT charge/discharge ratio threshold
VRCT
6
6.6
7.3
V
2
1
0
A
voltage
mA
VTH bias current
IBVTH
OUT output H saturation voltage
VOH
IO=200mA, RL=1
0.6
0.8
V
PRE output L saturation voltage
VPL
IO=5mA
0.2
0.4
V
PRE output H saturation voltage
VPH
IO= 20mA
Current limiter
VRf
VCC  VM
PWM output H level voltage
0.9
1.2
V
450
500
550
mV
VPWMH
2.2
2.5
2.8
V
PWM output L level voltage
VPWML
0.4
0.5
0.7
V
PWM external C capacitor charge
IPWM1
23
18
14
A
18
24
30
A
19
current
PWM external C capacitor discharge
IPWM2
current
PWM oscillation frequency
FPWM
C=200pF
23
27
kHz
Hall input sensitivity
VHN
Zero peak value (including offset and hysteresis)
15
25
mV
RD output pin L voltage
VRD
IRD=5mA
0.2
0.3
V
RD output pin leak current
IRDL
VRD=7V
30
A
Thermal protection circuit
THD
Design target value *3
210
C
150
180
*3 These are design guarantee values, and are not tested.
The thermal protection circuit is implemented to prevent the IC from being thermally damaged or burned when exposed to an environment exceeding
the guaranteed operating temperature range. Thermal design must be carried out so that the thermal protection circuit will never be activated while the
fan is running in a stable condition.
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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LB11660RV
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.
LB11660RV
Pd max - Ta
Allowable Power Dissipation, Pd max - W
1.2
Mounted on a specified board:
114.3mm76.1mm1.6mm glass epoxy
0.8
0.6
0.4
0.35
0.2
0
-30
0
30
60
90
Ambient Temperature, Ta -C
120
ILB01805
Pin Assignment
VM
1
16 OUT1
OUT2
2
15
PRE2
3
14 GND
VCC
4
VTH
5
12 CT
RMI
6
11 IN-
CPWM
7
10 HB
RD
8
9
PRE1
13 6VREG
LB11660RV
IN+
Top view
Truth Table
IN-
IN+
H
L
L
H
H
L
L
H
H
L
L
H
VTH
L
CPWM
CT
H
L
H
L
-
-
H
OUT1
OUT2
PRE1
PRE2
H
OFF
L
H
OFF
H
H
L
OFF
OFF
L
H
OFF
OFF
H
L
OFF
OFF
L
H
OFF
OFF
H
L
CPWM-H: CPWM>VTH, CPWM-L: CPWM<VTH
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RD
Mode
Rotating - drive
L
Rotating - regeneration
OFF
Lock protection
LB11660RV
Sample Application Circuit 1
Rf
*4
*2
CM=4.7F
or higher
VCC
VM
HB
*8
H
*5
IN-
IN+
*7
RD
6VREG
R3
OUT2
RMI
*9
R4
OUT1
*3
Control voltage
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 - GND wiring>
GRD of the IC is connected to the control circuit power supply system and GRD of the external N-channel is
connected to the motor power supply system. Groundings must be installed separately and all external control
components must be connected to the GND line of the IC.
*2 <Power stabilization capacitor for regeneration>
For the CM capacitor, that is a power stabilization capacitor for PWM drive and for absorption of kick-back, a
capacitance of 4.7F/25V or higher must be used. The CM capacitor must be connected without fail to prevent the
IC from being damaged when power is tuned on or off.
*3 <Speed control>
1) Control voltage
The PWM duty ratio is determined by comparing the VTH pin voltage and the PWM oscillation waveforms.
When the VTH pin voltage drops, the 'ON' duty ratio increases, and when it drops to or below the PWM output L
level voltage, the duty ratio is 100%.
2) Thermistor
In thermistor applications, the 6VREG voltage is usually divided by a resistor, and the voltage thus generated is
supplied to the VTH pin.
The PWM duty ratio is varied by the changes in the VTH pin voltage which result from changes in temperature.
*4 < Setting the current limiter >
The current limiter is actuated when the voltage of the current-sensing resistors between VCC and VM increases to
0.5V or more.
Since the current of a current limiter circuit is limited by the current determined by IO = VRf/Rf (where VRf = 0.5V
typ, Rf: current-sensing resistance), the current limiter is actuated at IO = 1A when Rf = 0.5. The Rf resistor must
be connected without fail, and its constant must be within the recommended operating range for current limiters.
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LB11660RV
*5 <Hall input>
Wiring need to be short to prevent carrying of the noise. The Hall input circuit is a comparator having a hysteresis of
20mV. It is recommended that the Hall input level be more than three times (60mVp-p) this hysteresis.
*6 < PWM oscillation frequency setting capacitor >
The oscillation frequency is 23kHz when CP = 200pF and 46kHz when CP = 100pF, and this serves as the PWM
fundamental frequency.
For the most part, the PWM frequency can be obtained from the following formula:
f [kHz]  (4.6106) ÷C [pF]
*7 <RD output>
This is the open collector type output, which outputs ''L'' during rotation. It is set to 'OFF' when a lock is detected.
This output is left open when not in use.
*8 <HB pin>
This is a Hall element bias pin, that is, the 1.25V constant-voltage output pin.
*9 <RMI pin>
Lowest speed setting pin for speed control.
The minimum output duty setting is made with R3 and R4. The R4 is left open to stop operation at a duty ratio
of 0%.
Rotation Speed Control Chart
Duty100%
PWM
DUTY(%)
Minimum output duty
Duty0%
VPWML
RMI
VPWMH
VTH (V)
Rotation set to
minimum speed
PWM control
variable speed
Full speed
VTH voltage
2.5V
RMI voltage
CPWM
0.5V
0V
ON
ON Duty
OFF
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LB11660RV
Sample Application Circuit 2 <no minimum speed setting, thermistor input>
RL
CM=4.7F
or higher
*8
H
*5
VCC
VM
HB
IN-
IN+
RD
6VREG
R3
OUT2
RMI
OUT1
RTU
PRE1
VTH
TH
PRE2
CPWM
CP=200pF *f=23kHz
CP=100pF *f=43kHz
CT
CT=0.47 to 1F
GND
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LB11660RV
Internal Equivalent Circuit Diagram
RD
Thermal
protection
circuit
VCC
VM
6VREG
HB
HALL
Constant
voltage circuit
Delay
circuit
OUT2
Control
circuit
1.25V
OUT1
M
PRE1
IN+
Delay
circuit
IN-
CT
Pre-Driver
PRE2
Oscillation
circuit
Amplifier with
hysteresis
Charge/
discharge circuit
GND
Pre-Driver
RMI VTH
CPWM
ORDERING INFORMATION
Device
LB11660RV-MPB-H
Package
SSOP16 (225mil)
(Pb-Free / Halogen Free)
Wire Bond
Shipping (Qty / Packing)
Au-Wire
LB11660RV-TLM-H
SSOP16 (225mil)
(Pb-Free / Halogen Free)
90 / Fan-Fold
Au-Wire
2000 / Tape & Reel
LB11660RV-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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