Ordering number : ENA0706
Monolithic Linear IC
LA6581CL
Overview
Fan Motor Driver
BTL Driver Single-Phase Full-Wave
The LA6581CL is single-phase bipolar fan motor is driven, through BTL output linear drive, at high efficiency, low power,
and low sound by suppressing the reactive power. Lock protection, rotary signal (FG, RD) circuits are incorporated, which
is optimum for the notebook PC, consumer equipment power supply, car audio system, CPU cooler, etc. that require high
reliability and low noise.
Functions
•
Single-phase full-wave linear drive with BTL output (gain resistance 500-284k, 55dB) : Suitable for the equipment
requiring silent operation, such as game equipment, CPU cooler, etc. because of its freedom from switching noise.
•
Low-voltage operation possible, with wide operable voltage range (3 to 16V)
•
Low saturation output (Upper + lower saturation voltage : VOsat (total) = 0.3V typ, IO = 100mA) : High coil efficiency
with low current drain. IC itself does not generate much heat.
•
High impedance of Hall input pin
•
FG output (rotation speed detection output : open collector output)
•
Heat protection circuit : When the large current flows because of output short-circuit, raising the IC chip temperature
above 180°C, the heat protection circuit suppresses the drive current, preventing IC burn and breakdown.
•
Ultraminiature package (ECSP2828-10 : 2.8×2.8×0.8mm
3
typ) : Small substrate while allowing larger blades.
Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to
"standard application", intended for the use as general electronics equipment (home appliances, AV equipment,
communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be
intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace
instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety
equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case
of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee
thereof. If you should intend to use our products for applications outside the standard applications of our
customer who is considering such use and/or outside the scope of our intended standard applications, please
consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our
customer shall be solely responsible for the use.
Specifications of any and all SANYO Semiconductor Co.,Ltd. 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.
30707 MS PC 20070129-S00001 No.A0706-1/4
LA6581CL
Specifications
Absolute Maximum Ratings
at Ta = 25°C
Parameter
Output voltage
Allowable dissipation
Output current
Symbol
VCC max
Pd max
IOUT max
IOUT max
Output withstand voltage
FG output withstand
FG output current
Operating temperature
Storage temperature
VOUT max
VFG max
IFG max
Topr
Tstg
Mounted on a specified board*1
*2
T
<
200ms
Conditions
Ratings
18
450
0.36
0.50
18
18
5
-30 to +100
-55 to +150
Unit
V
mW
A
A
V
V
mA
°C
°C
*1 ; Mounted on a board (20.0×10.1×0.8mm
3
: Paper Phenol)
*2 ; This specifies the starting current. Tj = 150°C max must not be exceeded.
Recommended Operating Ratings
at Ta = 25°C
Parameter
Supply voltage
Common-phase input voltage range
of Hall input
Symbol
VCC
VICM
Conditions
Ratings
2.2 to 16
0.3 to VCC-1.5
Unit
V
V
Electrical Characteristics
at Ta
=
25°C, VCC = 12.0V, unless especially specified.
Parameter
Circuit current
OUT output low voltage
OUT output high voltage
Hall bias voltage
Hall amplifier gain
Hall amplifier input current
Input offset voltage
FG output low voltage
FG output leakage current
Thermal protection circuit
Symbol
ICC
VOL
VOH
VHB
Vg
VINR
VOFST
VFG
IFGL
Th
IFG = 3mA
VFG = 7V
* Design guarantee
150
180
Conditions
min
IN- = 5.8V, IN+ = 6.0V, RL =
∞
IO = 100mA
IO = 100mA
IHB = 5mA
1.85
52
-10
Ratings
typ
14
0.1
0.1
1.95
55
-2
3
0.2
max
19
0.2
0.2
2.05
58
10
6
0.3
30
200
mA
V
V
V
dB
µA
mV
V
µA
°C
Unit
* Design guarantee : Design target. Measurement with a single unit not made.
Truth Table
IN-
H
L
-
IN+
L
H
-
OUT1
H
L
off
OUT2
L
H
off
FG
L
off
-
During rotation
During overheat protection
Mode
No.A0706-2/5
LA6581CL
Package Dimensions
unit : mm (typ)
3301
500
Pd max -- Ta
Specified board : 20×10×0.8mm
3
Paper phenol
Top View
2.8
1
2
10
Bottom View
0.325
1
Allowable power dissipation, Pd max -- mW
450
400
0.3
(0.2)
2.8
0.05
0.6
300
200
180
6
0.075
5
100
(0.8)
0.8
0.015
SANYO : ECSP2828-10X02
0
-30
0
30
60
90 100
120
Ambient temperature, Ta --
°C
Pin Assignment
IN+
HB
IN-
OUT1
NC
1
2
3
4
5
Top view
10 FG
9 NC
8 VCC
7 OUT2
6 GND
Block Diagram
VCC
FG
2.0VRG
HB
H
IN-
IN+
OUT1
OUT2
GND
PCA01064
No.A0706-3/5
LA6581CL
Timing Chart
Hall Signal
OUTPUT
Coil Current
FG Pulse
No.A0706-4/5
LA6581CL
Sample Application Circuit
Di
*1
Cr
VCC
*4
R2
HB
*2
H
IN-
IN+
*5
R2
GND
FG
*3
OUT1
H
HB
IN-
OUT2
R1
IN+
Elements in substrate
*1 : When Di to prevent breakdown in case of reverse connection is used, it is necessary to insert a capacitor Cr to
secure the regenerative current route. Similarly, Cr is necessary to enhance the reliability when there is no
capacitor near the fan power line.
*2 : To obtain Hall bias from VCC, carry out 1/2
×
VCC bias as shown in the figure. Linear driving is made through
voltage control of the coil by amplifying the Hall output. When the Hall element output is large, the startup
performance and efficiency are improved. Adjustment of the Hall element can reduce the noise further.
*3 : When the Hall bias is taken from the HB pin, constant-voltage bias is made with about 2.0V. Therefore, the Hall
element can provide the output satisfactory in temperature characteristics. Adjustment of the Hall output
amplitude is made with R1. (When VCC = 12V, the step *2 above proves advantageous for IC heat generation.)
*4 : Keep this open when not used.
*5 : When the wiring from the Hall output to IC Hall input is long, noise may be carried through the wiring.
SANYO Semiconductor Co.,Ltd. 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 Semiconductor Co.,Ltd.
products described or contained herein.
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semiconductor products fail or malfunction with some probability. It is possible that these probabilistic failures or
malfunction could give rise to accidents or events that could endanger human lives, trouble that could give rise
to smoke or fire, or accidents 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.
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No part of this publication may be reproduced or transmitted in any form or by any means, electronic or
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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 Semiconductor Co.,Ltd. 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.
Upon using the technical information or products described herein, neither warranty nor license shall be granted
with regard to intellectual property rights or any other rights of SANYO Semiconductor Co.,Ltd. or any third
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above.
This catalog provides information as of March, 2007. Specifications and information herein are subject
to change without notice.
PS No.A0706-5/5
stm32/stm8
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