LB1965M
No. 6189-1/6
LB1965M
Package Dimensions
unit: mm
3111-MFP14S
Features
With only a few peripheral parts including a thermistor,
ambient temperature dependent continuous speed control
can be implemented. This allows low-speed startup
(100% duty drive at startup).
Settable minimum rotation speed for low temperature
Built-in thermistor voltage amplification circuit assures
high precision of ambient temperature to rotation speed
ratio
Built-in motor lockup protection and automatic recovery
circuit
Output current Io = 1.5A, built-in output stage protection
Zener diode
> Low-noise protection with chip capacitors also
possible
Built-in thermal protection
FG output
Direct Hall element connection possible
83100RM(KI)
Ordering number : ENN6189
Monolithic Digital IC
Two-Phase Unipolar Driver
for Variable-Speed Fan Motor
[LB1965M]
SANYO : MFP14S
Specifications
Absolute Maximum Ratings
at Ta = 25C
Parameter
Symbol
Conditions
Ratings
Unit
Maximum input current
ICC max
t
20 ms
200
mA
Maximum applied output voltage
VOUT max
Internal
V
Maximum output current
I out max
1.5
A
Current flowing into FG
IRD max
10
mA
FG applied voltage
VRD max
50
V
Allowable power dissipation
Pd max
Mounted on a specified PCB
0.8
W
(114.3
76.1
1.5 mm
3
glass epoxy)
Operating temperature
Topr
30 to +85
C
Storage temperature
Tstg
55 to +150
C
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
1
14
7
8
8.0
0.15
1.0 1.0
0.35
1.8max
1.5
0.1
4.4
6.4
5.15
0.625
LB1965M
No. 6189-2/6
Allowable Operating Ranges
at Ta = 25C
Parameter
Symbol
Conditions
Ratings
Unit
Input current range
ICC
6.0 to 50
mA
Hall amplifier common mode input
VICM
0 to VIN1.5
V
voltage range
RMI input voltage range
VRMI
0.3 to VIN
V
Rth input voltage range
VICM
0 to VIN1
V
Electrical Characteristics
at Ta = 25C, ICC = 10 mA
Parameter
Symbol
Conditions
Ratings
Unit
min
typ
max
Output limiter voltage
VoLM1
Io = 0.1A
30
32
34
V
Vosat1
Io = 0.5A
0.95
1.2
V
Output saturation voltage
Vosat2
Io = 1.0A
1.15
1.5
V
Vosat3
Io = 1.5A
1.4
2.0
V
Input voltage
VIN
Icc = 7.0 mA
6.4
6.7
7.0
V
Amplifier input offset voltage
VOFF
7.0
0
7.0
mV
Amplifier input bias current
IBA
250
nA
FG output saturation voltage
VFG(sat)
IFG = 5 mA
0.15
0.3
V
C charge voltage
IC1
C = GND
2.7
3.9
5.0
A
C discharge voltage
IC2
C = VIN
0.35
0.50
0.65
A
Comp input threshold voltage
VTH1
0.77 0.8VIN
0.83
V
VTH2
0.42 0.45VIN
0.48
V
Ct discharge voltage
VCT
0.20 0.22VIN
0.24
V
Rt input current
Irt
VRT = GND
1
3
A
VRt amplification
VRt
RT = OPEN
1.52
1.56
1.60
times
RMI offset voltage
VRMIoff
7
0
+7
mA
Thermal protection operating voltage
TSD
Design target value*
150
180
210
C
Pin Assignment
200
0
400
600
800
1000
30
0
30
60
85 90
120
Allowable power dissipation, Pd max mW
Pd max Ta
Ambient temperature, Ta
C
Specified substrate (114.3
76.1
1.5 mm3) glass epoxy
416
1
2
3
4
5
6
7
14
12
10
11
13
9
8
(Top View)
LB1965M
NC
IN
IN+
CR
OUT1
B1
GND
B2
OUT2
RMI
Rth
Ct
FG
VIN
* Design target values are not measured.
LB1965M
No. 6189-3/6
Sample Application Circuit
Truth Table
IN
+
IN
Ct
Rt
RMI
CR
OUT1
OUT2
FG
Mode
H
L
H
L
H
L
H
L
L
Full speed
L
H
H
L
H
L
L
H
H
Full speed
H
L
H
H
L
L
H
L
L
Minimum speed
L
H
H
H
L
L
L
H
H
Minimum speed
L
H
H
L
H
H
Low speed
H
H
H
Lockup protection
The above circuit is an example for ambient temperature based speed control using a thermistor.
The thermistor voltage (Rth pin voltage) is multiplied internally by 1.6 and compared to the
voltage at the Ct pin. With the above settings and at Ta = 25C, the Rth pin voltage is interrupted
for the interval t off as defined by the equation below. At Ta = 45C, because the Rth pin voltage
1.6 becomes less than Vct (=1.5V), there is no cut-off interval and the motor is driven with a
duty ratio of 100%. At low temperatures, the thermistor voltage (Rth
1.6) will rise, but
minimum rotation speed is maintained to a value defined by the RMI pin voltage. Therefore
minimum rotation speed at temperatures below Ta = 25C is constant.
t = C2
R2
In ( )
VINVRth
1.6
VINVCt
12V
Unit ( resistance:
, capacitance: F)
H
B1
OUT1
OUT2
B2
GND
CR
RMI
Rth
Ct
IN+
R6
2k
R2
470k
D1
R1
390
Noise absorption
capacitor
0.01 to 0.047
F
C1
0.47
C2
0.022
IN
VIN
FG
R3
30k
TH
10k
R4
18k
R5
39k
C3
C4
LB1965M
No. 6189-4/6
Output Timing Chart
FG output
Output off
signal
Toff
Ton
To
Hall input
Discharge
pulse
Ct voltage
GND
OUT1
current
VRth
1.6
VCt (=1.5V)
Full-phase ON
waveform
Controlled
waveform
VRMI
Timing comparator
To output
Discharge pulse
Ct
RMI
Rth
GND
0.6r
r
1.6 times circuit
VIN
OUT2
current
Low temperature
High temperature
LB1965M
No. 6189-5/6
Block Diagram
14
3
2
H
Constant
Charge/
Discharge
6
5
9
8
13
7
4
12
Thermal
Protect
Control
Block
11
10
GND
FG
OUT2
B2
OUT1
B1
L1
L2
RMI
Rth
Ct
CR
C1
0.47 to 10
F
VIN
R2
C2
OUTPUT-Timing-Control
R1
VIN
R6
IN+
IN
AMP
D1
1.6
R3
R4
R5
TH1
Unit ( resistance:
, capacitance: F)
LB1965M
No. 6189-6/6
This catalog provides information as of August, 2000. Specifications and information herein are subject to change
without notice.
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.
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