SANYO LB1863M_09

Ordering number : ENN4943A
Monolithic Digital IC
LB1863M, 1869M
Two-Phase Unipolar Brushless Motor Driver
Automatic Recovery Type Circuit in a Miniature Flat Package
Overview
Package Dimensions
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.
unit: mm
3111-MFP14S
0.625
[LB1863M, 1869M]
4.4
5.15
6.4
8
14
Features and Functions
7
1.8max
1
0.15
1.5
8.0
0.1
• 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.
0.35
1.0 1.0
SANYO: MFP14S
Classification
Package
System voltage
MFP-14S
12 V
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.
Any and all SANYO products described or contained herein do not have specifications that can handle
applications that require extremely high levels of reliability, such as life-support systems, aircraft’s
control systems, or other applications whose failure can be reasonably expected to result in serious
physical and/or material damage. Consult with your SANYO representative nearest you before using
any SANYO products described or contained herein in such applications.
SANYO assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other
parameters) listed in products specifications of any and all SANYO products described or contained
herein.
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
73099TH (OT)/13097HA (OT) No. 4943-1/6
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
V
LB1869M
60
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, 1869M
Specifications of any and all SANYO products described or contained herein stipulate the performance,
characteristics, and functions of the described products in the independent state, and are not guarantees
of the performance, characteristics, and functions of the described products as mounted in the customer’s
products or equipment. To verify symptoms and states that cannot be evaluated in an independent device,
the customer should always evaluate and test devices mounted in the customer’s products or equipment.
SANYO Electric Co., Ltd. strives to supply high-quality high-reliability products. However, any and all
semiconductor products fail with some probability. It is possible that these probabilistic failures could
give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire,
or that could cause damage to other property. When designing equipment, adopt safety measures so
that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective
circuits and error prevention circuits for safe design, redundant design, and structural design.
In the event that any or all SANYO products (including technical data, services) described or contained
herein are controlled under any of applicable local export control laws and regulations, such products must
not be exported without obtaining the export license from the authorities concerned in accordance with the
above law.
No part of this publication may be reproduced or transmitted in any form or by any means, electronic or
mechanical, including photocopying and recording, or any information storage or retrieval system,
or otherwise, without the prior written permission of SANYO Electric Co., Ltd.
Any and all information described or contained herein are subject to change without notice due to
product/technology improvement, etc. When designing equipment, refer to the “Delivery Specification”
for the SANYO product that you intend to use.
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 July, 1999. Specifications and information herein are subject to
change without notice.
PS No. 4943-6/6