ENA2142 D

Ordering number : ENA2142
LB11668MC
Monolithic Digital IC
For Fan Motor
http://onsemi.com
Two-Phase Half-Wave Driver
Overview
The LB11668MC is a two-phase uni-polar brushless motor driver for fan motor.
Functions
• Two-phase half-wave drive.
• RD (lock detection) outputs incorporated.
• FG (rotation detection) outputs incorporated.
• Thermal shutdown circuit incorporated.
• Lock protection and automatic return function incorporated.
• Output protection zener diode incorporated.
• Hall input amplifier incorporated.
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter
Maximum inflow current
Output current
Symbol
Conditions
IIN max
Ratings
Unit
100
mA
IOUT ave
400
mA
IOUT peak
800
mA
Output withstand voltage
VOUT max
Internal
RD output current
IRD max
10
RD output withstand voltage
VRD max
28
V
Allowable dissipation
Pd max
750
mW
Operating temperature
Topr
-30 to +85
°C
Storage temperature
Tstg
-55 to +150
°C
Mounted on a board *
V
mA
* Specified board : 114.3mm × 76.1mm × 1.5mm, glass epoxy board.
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.
Semiconductor Components Industries, LLC, 2013
May, 2013
N0712NKPC 20121001-S00001 No.A2142-1/7
LB11668MC
Recommended Operating Conditions at Ta = 25°C
Parameter
Symbol
Inflow current range
IIN1
Common-mode input voltage range
VCOM
Conditions
Ratings
Unit
5 to 25
0.2 to VIN -2.3
mA
V
Electrical Characteristics at Ta = 25°C, VCC = 24V, R1 = 1kΩ, unless otherwise specified.
Parameter
Symbol
Ratings
Conditions
min
VIN voltage
VIN
IIN = 6mA
CT capacitor charging current
ICT1
CT = 0V
Capacitor discharging current
ICT2
CT = 6.0V
Capacitor charging/
RCT
CT charging voltage
CT discharging voltage
Unit
typ
6.9
max
7.2
7.6
V
0.8
1.2
2.0
μA
0.12
0.24
0.4
μA
RCT = ICT1 / ICT2
4.0
5.0
7.0
VCTH
VCT/VIN
66
70
74
%
VCTL
VCT/VIN
36
40
44
%
Output limit withstand voltage
VOLM
IO = 10mA
50
53
56
V
Output saturation voltage
VOL1
IO = 200mA
0.85
1.1
V
Hall input sensitivity
VHN
Including offset and hysteresis
8
18
mV
RD output saturation voltage
VRD
IRD = 5mA
0.2
0.5
V
RD output leak current
IRD
VRD = 14V
0.1
10
μA
Thermal protection function
VTH
Design target value *
180
210
°C
discharging current ratio
150
operating temperature
* "Design" is a design target and is not measured.
Package Dimensions
unit : mm (typ)
3426A
4.9
5
0.41
1.75 MAX
0.21
0.8
0.6
0.4
0.39
0.2
0
--30
0
30
60
90
120
Ambient temperature, Ta -- °C
1.5
1.0
Pd max -- Ta
Mounted on the specified board: 114.3×76.1×1.6mm3
glass epoxy
0.175
1
0.835
0.37
6.0
6
3.9
10
Allowable power dissipation, Pd max -- W
1.0
SANYO : SOIC10
No.A2142-2/7
LB11668MC
Pin Assignment
RD
1
10 VIN
IN+
2
9
CT
NC
3
8
NC
IN-
4
7
OUT2
OUT1
5
6
GND
LB11668MC
Top view
Block Diagram
L1
R1
Thermal
protection
VIN
VCC
L2
OUT1
IN+
Control block
IN-
H
OUT2
RD
Constant
current circuit
CT
C1
GND
0.1 to 1μF
Truth table
IN-
IN+
H
L
L
H
-
-
CT
L
H
OUT1
OUT2
L
H
H
L
OFF
OFF
RD
Mode
L
Rotation
H
Lock protection
No.A2142-3/7
LB11668MC
VIN1
IIN=6mA
A
V
10
9
8
7
6
VIN
CT
NC
OUT2
GND
RD
IN+
NC
IN-
OUT1
1
2
3
4
5
ICT1
A
VCC=24V
R1=1kΩ
10
9
8
7
6
VIN
CT
NC
OUT2
GND
RD
IN+
NC
IN-
OUT1
1
2
3
4
5
ICT2
A
VCC=24V
R1=1kΩ
VCT=6V
10
9
8
7
6
VIN
CT
NC
OUT2
GND
RD
IN+
NC
IN-
OUT1
1
2
3
4
5
RCT=ICT1/ICT2
No.A2142-4/7
LB11668MC
VCTH, VCTL
10kΩ
R1=1kΩ
VCT
V
VCC=24V
VM
10
9
8
7
6
VIN
CT
NC
OUT2
GND
RD
IN+
NC
IN-
OUT1
1
2
3
4
5
VOLM
VCC=24V
R1=1kΩ
10
9
8
7
6
VIN
CT
NC
OUT2
GND
RD
IN+
NC
IN-
OUT1
1
2
3
4
5
V
IO=10mA
VOL1
IO=500mA
VCC=24V
V
R1=1kΩ
10
9
8
7
6
VIN
CT
NC
OUT2
GND
RD
IN+
NC
IN-
OUT1
1
2
3
4
5
No.A2142-5/7
LB11668MC
VHN
10kΩ
R1=1kΩ
VM
VCC=24V
10
9
8
7
6
VIN
CT
NC
OUT2
GND
RD
IN+
NC
IN-
OUT1
1
2
3
4
5
1V
V
VRD
VCC=24V
R1=1kΩ
10
9
8
7
6
VIN
CT
NC
OUT2
GND
RD
IN+
NC
IN-
OUT1
1
2
3
4
5
V
IRD=5mA
VRL
VCC=24V
VCT=6V
R1=1kΩ
10
9
8
7
6
VIN
CT
NC
OUT2
GND
RD
IN+
NC
IN-
OUT1
1
2
3
4
5
A
VRD=14V
No.A2142-6/7
LB11668MC
Application Circuit Example 24V power supply
VCC
R1=1kΩ
VIN
R2=2kΩ
H
IN+
OUT1
IN-
OUT2
CT
RD
0.1 to 1μF
GND
Substrate parts
Notice
• Take care not to cause interference due to wiring of IN- and OUT1.
• In an application of connecting the CT pin to GND, lock protection and restart function are not effective.
• With reverse power - GND connection in the above application figure, the current restricted by the coil resistance
flows from GND → OUT → coil → power supply. IC breakage does not occur if the current value is 500mA or less.
If necessary, insert Di between VCC and coil.
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PS No.A2142-7/7
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