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PDF LB1869M Data sheet ( Hoja de datos )

Número de pieza LB1869M
Descripción Two-Phase Unipolar Brushless Motor Driver Automatic Recovery Type Circuit in a Miniature Flat Package
Fabricantes Sanyo 
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Ordering number : N4943
Monolithic Digital IC
LB1863M, 1869M
Two-Phase Unipolar Brushless Motor Driver
Automatic Recovery Type Circuit in a Miniature Flat Package
Overview
The LB1863M and LB1869 (LB1669M) 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.
Package Dimensions
unit: mm
3111-MFP14S
[LB1863M, 1869M]
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.
SANYO: MFP14S
Classification
Package
System voltage
MFP-10S MFP-14S
12 V
LB1669M LB1869M*
24 V
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.
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter
Maximum input current
Output voltage
Output current
RD influx current
RD voltage
Allowable power dissipation
Operating temperature
Storage temperature
Symbol
ICC max
VOUT
IOUT
IRD
VRD
Pd max
Topr
Tstg
t 20 ms
LB1863M
LB1869M
Conditions
When mounted (on a 20 × 15 × 1.5-mm3 glass-epoxy printed circuit board)
Ratings
200
–0.3 to +85
–0.3 to +60
1.5
10
30
800
–30 to +80
–55 to +150
Unit
mA
V
V
A
mA
V
mW
°C
°C
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
13097HA (OT) No. 4943-1/5

1 page




LB1869M pdf
LB1863M, 1869M
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
ŒWhile 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.
When 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.
ŽWhen 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  and Ž, are repeated with a
ton:toff ratio of about 1:6 to protect the motor.
{If 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.
s No products described or contained herein are intended for use in surgical implants, life-support systems, aerospace
equipment, nuclear power control systems, vehicles, disaster/crime-prevention equipment and the like, the failure of
which may directly or indirectly cause injury, death or property loss.
s Anyone purchasing any products described or contained herein for an above-mentioned use shall:
ΠAccept full responsibility and indemnify and defend SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and
distributors and all their officers and employees, jointly and severally, against any and all claims and litigation and all
damages, cost and expenses associated with such use:
 Not impose any responsibility for any fault or negligence which may be cited in any such claim or litigation on
SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors or any of their officers and employees
jointly or severally.
s Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for
volume production. SANYO believes information herein is accurate and reliable, but no guarantees are made or implied
regarding its use or any infringements of intellectual property rights or other rights of third parties.
This catalog provides information as of January, 1997. Specifications and information herein are subject to
change without notice.
No. 4943-5/5

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