Page 1
Ordering number : ENN6188A
LB1964T
Monolithic Digital IC
LB1964T
Fan Motor Single-Phase Full-Wave Driver
Overview
The LB1964T is a driver for single-phase bipolar drive fan
motors that features compact and low-profile MSOP–8
package. Low-saturation output and low-voltage operation
make it ideal for applications that require small size and
high efficiency, such as notebook computers and CPU
cooling fans.
Package Dimensions
unit: mm
3245-MSOP8
[LB1964T]
3.0
85
3.0
0.5
4.9
Features
• Single-phase full-wave drive
• Low-voltage operation (VCC = 2.0V min.)
• Low-saturation output (upper side + lower side saturation
voltage: Vosat (total) = 0.3V typ., Io = 100 mA)
• Ultraminiature package (3.0 × 4.9 × 0.93 mm3)
• FG output
• Built-in thermal protection circuit
14
0.65
(0.5)
0.25
1.1max
(0.85)
0.08
0.25
SANYO : MSOP8
Specifications
Absolute Maximum Ratings at Ta = 25˚C
Parameter Symbol Conditions Ratings Unit
Maximum supply voltage VCC max 9 V
Allowable power dissipation Pd max With specified substrate* 370 mW
OUT output current I
OUT output withstand voltage V
FG output withstand voltage VFG max 7 V
FG output current IFG max 5 mA
Operating temperature Topr –20 to +85 ˚C
Storage temperature Tstg –55 to +150 ˚C
* Specified substrate (20.0 × 10.0 × 0.8 mm
max 0.3 A
OUT
max 9 V
OUT
3
paper phenol)
Allowable Operating Ranges at Ta = 25˚C
Parameter Symbol Conditions Ratings Unit
Power supply voltage V
Hall input common mode input voltage
range
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.
CC
V
ICM
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
2 to 8 V
0.2 to VCC–1 V
O2599RM(KI)
No. 6188-1/4
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LB1964T
Electrical Characteristics at Ta = 25˚C, VCC = 3.3V, unless otherwise specified
Parameter Symbol Conditions
Current drain Icc 3 4.5 mA
OUT output Low saturation voltage V
OUT output High saturation voltage V
Hall bias voltage
Hall input sensitivity V
FG output Low voltage V
FG output leak current I
Thermal protection operating TTSD Assured design target* 150 180 200 ˚C
temperature
V
FGL
IO = 100 mA 0.2 0.3 V
OL
IO = 100 mA 0.2 0.3 V
OH
RH = 360Ω 1.17 1.27 1.37 V
HB
Zero peak value 1 7 mV
HN
IFG = 3 mA 0.2 0.3 V
FG
VFG = 7V 30 µA
* Assured design target: Target value, not measured individually
Truth Table
IN– IN+ OUT1 OUT2 FG Mode
H L H L L Rotating
LHLHOff
– – Off Off – In thermal protection
Ratings
min typ max
Unit
Pin Assignment
0.6
With specified substrate (20.0 × 10.0 × 0.8 mm3)
paper phenol
0.4
0.37
0.2
Allowable power dissipation, Pd max – W
0
–20 0 20 40 60 80 100
1
IN+
HB
2
Pd max – Ta
Ambient temperature, Ta – ˚C
8
FG
V
7
LB1964T
IN–
3
6
OUT2
0.19
CC
OUT1 GND
4
5
Top view
No. 6188-2/4
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Sample Application Circuit
LB1964T
Di
∗1
Cr
HB
V
CC
FG
∗2
∗3
H
IN–
OUT1
OUT2IN+
GND
*1 When a diode is used to protect the IC from destruction in case of reverse connection, the capacitor Cr
must be inserted to provide a regenerative current route. Similarly, a capacitor is needed in the power
supply line, even if no diode is used.
*2 The Hall element is supplied with a constant-voltage bias of approx. 1.27V from the HB pin. This
ensures stable output with good temperature characteristics from the Hall element. Because the
LB1964T incorporates a Hall amplifier with low offset, it provides coil output with a stable duty.
*3 The Hall amplifier does not have a hysteresis characteristic. The OUT1 and IN– pins are at the same
phase, and by arranging the two pins next to each other, chatter during phase switching is prevented.
However, if the wiring leading to the IN– pin is long, some noise interference may occur. In such a
case, the following steps should be considered:
(1) Arrange parts layout with priority to proximity of Hall element and IC, to allow short Hall element
output wiring.
(2) Insert a resistor of about 10 to 100 kΩ between OUT1 and IN– to create a hysteresis characteristic.
Block Diagram
HALL
VCC
HB
IN+
IN–
Thermal protection
circuit
Constant voltage
circuit
FG
Delay circuit
OUT2
Control
circuit
M
Delay circuit
OUT1
GND
No. 6188-3/4
Page 4
LB1964T
1.0
0.8
(sat) –V
O
0.6
0.4
0.2
0
0
V
100
Output current, IO – mA
10
8
– mA Output saturation voltage, V
6
CC
4
Current drain, I
2
– I
O(sat)
O
Upper + lower side
Lower side
Upper side
200 300 400
ICC – V
CC
RH = 360Ω
IN– = L
IN+ = L
IN– = L
IN+ = L
VCC = 3V
Ta = 25˚C
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
Hall bias voltage, HB – V
0.4
0.2
0
012345678910
HB – V
CC
360Ω
Tc = 25˚C
RH = 560Ω
240Ω
Power supply voltage, VCC – V
0
023145678910
Power supply voltage, VCC – V
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 October, 1999. Specifications and information herein are subject to change
without notice.
No. 6188-4/4
PS
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