ON LB1863M-MPB-E Two-phase brushless motor driver Datasheet

LB1863M, LB1869M
Monolithic Digital IC
Two-Phase Brushless
Motor Driver
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Overview
The LB1863M and LB1869M are 2-phase unipolar brushless motor
drivers that are provided in a miniature flat package that contributes to
end product miniaturization and supports automatic mounting. These
products support the implementation of motor drive lock protection and
automatic recovery circuits, and alarm specifications with a minimal
number of external components.
SOIC14 W / MFP14S (225 mil)
Features and Functions
 Hall elements can be connected directly to the IC itself.
 1.5-A output current output transistors built in
 Rotation detection function that provides a low-level output during
motor drive and a high-level output when the motor is stopped
 Motor lock protection and automatic recovery functions built in
 Thermal shutdown circuit
 Switching noise can be reduced with an external ceramic capacitor.
Classification
Package
System Voltage
MFP-14S
12V
LB1869M
24V
LB1863M
Note: The LB1869M and LB1863M are pin compatible so
that the same printed circuit board can be used for
both 12 V and 24 V products.
ORDERING INFORMATION
See detailed ordering and shipping information on page 7 of this data sheet.
© Semiconductor Components Industries, LLC, 2014
August 2014 - Rev. 0
1
Publication Order Number :
LB1863M_69M/D
LB1863M, 1869M
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter
Maximum input current
Symbol
ICC max
Conditions
Ratings
Unit
t ≤ 20 ms
200
LB1863M
–0.3 to +85
V
LB1869M
–0.3 to +60
V
mA
Output voltage
VOUT
Output current
IOUT
1.5
A
RD influx current
IRD
10
mA
RD voltage
VRD
Allowable power dissipation
Pd max
When mounted (on a 20 × 15 × 1.5-mm3 glass-epoxy printed circuit board)
30
V
800
mW
Operating temperature
Topr
–30 to +80
°C
Storage temperature
Tstg
–55 to +150
°C
Ratings
Unit
Allowable Operating Ranges at Ta = 25°C
Parameter
Input current range
Common-mode input voltage range
Symbol
Conditions
ICC
6.0 to 50
VICM
mA
0 to VIN –1.5
V
Electrical Characteristics at Ta = 25°C, ICC = 10 mA
Parameter
Output voltage 1
Output voltage 2
Output saturation voltage
Input voltage
Amplifier input offset voltage
Amplifier input bias current
RD output saturation voltage
Capacitor discharge current
Comparator input threshold voltage
Symbol
VOR
VO(SUS)
Conditions
Ratings
min
typ
Unit
max
LB1863M
80
LB1869M
60
V
V
LB1863M : IO = 0.1 A
65
V
LB1869M : IO = 0.1 A
40
V
VO(sat)1
IO = 0.5 A
0.95
1.2
V
VO(sat)2
IO = 1.0 A
1.15
1.5
V
6.4
6.7
7.0
V
–7
0
+7.0
mA
0.1
0.3
V
3
3.9
μA
VIN
ICC = 7.0 mA
VOFF
IBA
VRD(sat)
IC1
–250
IRD = 5 mA
2.1
nA
IC2
0.31
0.44
0.59
μA
VTH1
0.77
0.8VIN
0.83
V
VTH2
0.42
0.45VIN
0.48
V
Pin Assignment
No. 4943-2/6
LB1863M, 1869M
Equivalent Circuit, Block Diagram, and Sample Application
Sample Application Circuit
No. 4943-3/6
LB1863M, 1869M
Sample Application Circuit Output Waveforms
Truth Table
IN+
IN–
C
OUT1
OUT2
RD
H
L
L
H
L
L
L
H
L
L
H
L
H
L
H
H
H
H
L
H
H
H
H
H
Design Documentation (See the application circuit diagram.)
1. Power-supply voltage (VIN pin)
Since these miniature flat package products supply power to the Hall amplifier block and the control block from an
internal parallel regulator, they operate with good stability with respect to kickback currents from the motor and
variations in the power-supply voltage. They also provide an adequate ability to withstand surges. The resistor R1
between the VCC and VIN pins should be set up so that a current in the range ICC = 6 to 50 mA flows into the VIN pin
in the fan motor power-supply voltage range.
VIN has a typical value of 6.7 volts when ICC is 7 mA. The current flowing into VIN can be calculated with the
following formula.
VCC – VIN
ICC = —————
......................(1)
R1
• Abnormal voltage considerations
The maximum allowable current for the VIN pin is 200 mA. Therefore, the IC design allows it to withstand voltages
up to the plus side abnormal voltage Vsurge give by formula (2).
Vsurge = VIN + R1 × 200 mA......(2)
2. Hall input pin voltages (IN– and IN+ pins)
The Hall element output voltages to the Hall element input pins must be in the range 0 to (VIN –1.5 V). The gain from
the Hall input pins to the output pin is over 100 dB. The Hall input amplifier offset voltage is ±7 mV. This means that
the Hall element output must be set up taking this ±7 mV offset into account.
3. Output transistors (OUT1 and OUT2 pins)
Output current: IO = 1.5 A maximum
Output saturation voltage: VOsat = 1.15V/1.0 A (typical)
Applications should adopt one of the following three output protection techniques.
➀ If a capacitor is inserted between OUT and ground, use a capacitor with a value up to C = 10 μF, and design that
value so that the kickback and reverse voltages do not exceed VOR.
➁ If a Zener diode is added, determine a value for the Zener voltage that is lower than VO(SUS). If radio-frequency
noise is a problem, insert a capacitor between B1 and B2.
➂ If a capacitor is inserted between OUT and B1, set the capacitor value so that the kickback voltage is lower than
VO(SUS). If oscillation occurs, insert a resistor in series with the capacitor.
No. 4943-4/6
LB1863M/LB1869M
4. Output protection function (C pin)
This pin connects the capacitor that forms the automatic recovery circuit. If rotation stops due to, for example, a
motor overload, the pin voltage rises and the output stops. The system automatically recovers from stopped to drive
mode when the load is set to an appropriate level. The lock detection time can be set by changing the value of the
capacitor.
For a 1-μF capacitor:Lock detection time
About 2 seconds
Lock protection time (output on) About 1 second
(output off) About 6 seconds
Automatic recovery circuit pin C voltage
➀While the blades are turning, the capacitor is charged with a current of about 3 μA (typical), and C is discharged by
pulses that correspond to the motor speed.
➁When the blades lock, the capacitor is no longer discharged, and the voltage across the capacitor increases. The
output is turned off when that voltage reaches 0.8 × VIN.
➂When the output is turned off, the capacitor is discharged at a current of about 0.44 μA (typical). When the
capacitor voltage falls under VTH2, if the lock state is not yet cleared the capacitor continues discharging until
VTH1. (Note that the output is turned on at this time.) These operations, i.e. items ➁ and ➂, are repeated with a
ton:toff ratio of about 1:6 to protect the motor.
④If the lock state has been cleared when the capacitor voltage reaches VTH2, motor rotation is started by turning the
output on.
5. Rotation detection signal (RD pin)
This is an open collector output, and outputs a low level in drive mode and a high level when the motor is stopped.
6. Radio-frequency noise reduction function (B1 and B2 pins)
These are base pins for Darlington pair outputs. Add capacitors of about 0.01 to 0.1 μF if radio-frequency noise is a
problem.
7. Thermal shutdown function
Turns off the output in response to coil shorting or IC overheating.
No. 4943-5/6
LB1863M, LB1869M
Package Dimensions
unit : mm
SOIC14 W / MFP14S (225 mil)
CASE 751CB
ISSUE A
to
(Unit: mm)
1.10
SOLDERING FOOTPRINT*
GENERIC
MARKING DIAGRAM*
5.70
XXXXXXXXXX
YMDDD
1.00
XXXXX = Specific Device Code
Y = Year
M = Month
DDD = Additional Traceability Data
0.47
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
6
*This information is generic. Please refer to
device data sheet for actual part marking.
LB1863M, LB1869M
ORDERING INFORMATION
Device
Package
Shipping (Qty / Packing)
LB1863M-MPB-E
SOIC14 W / MFP14S (225 mil)
(Pb-Free)
60 / Fan-Fold
LB1863M-MPB-H
SOIC14 W / MFP14S (225 mil)
(Pb-Free / Halogen Free)
60 / Fan-Fold
LB1863M-TLM-E
SOIC14 W / MFP14S (225 mil)
(Pb-Free)
1000 / Tape & Reel
LB1863M-TLM-H
SOIC14 W / MFP14S (225 mil)
(Pb-Free / Halogen Free)
1000 / Tape & Reel
LB1869M * Discontinued
SOIC14 W / MFP14S (225 mil)
(Pb-Free)
-/-
† 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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